How to Use an SPL Meter to Calibrate Speaker Levels

[@Avean]

This basicly changed my sound system completely. I have had it for years but recently ive been thinking if it shouldnt just sound way better than it does. So i did the whole audyssey setup multiple times, then i looked at the levels which was WAAAAYYY off. Did a quick calibration with sound meter on my phone and it was night and day. Im gonna buy a SPL meter tomorrow to get it perfectly.

[@mikef8654]

If you haven’t already. Room treatment makes a huge difference as well.

[@JayJay-jx3zg]

Did the SPL meter change your db levels drastically compared to what you got with your phone?

[@Avean]

@@JayJay-jx3zg No the phone worked really good :)

[@JayJay-jx3zg]

@Avean I just watched another vid comparing the phone app to an SPL meter shortly after my question to you, and there wasn't a difference if you used one of the good apps. Yay for technology, for sure.

[@dcrnoodle]

So this video might be 5 years old but today after 2 years trying to do the perfect settings and failed many times… I followed this video to the T and my system has never sounded so good !! Thank you audioholics- thank you muchly 👌

[@lvKingCobravl]

We’re in 2024 and I barely purchased my first SPL meter. Thanks Gene for this wonderful video. I am new to HT.

[@marksteward5358]

Gene and Audioholics has been an amazing help. I'm driving all SVS prime and ultra speakers..I'm beginning to become an audiophile thanks to Audioholics and Gene's incredible knowledge

[@davidt8438]

I’ve. Had that Radio Shack for over 30 years now. It’s worked flawlessly the whole time and at the time I bought it the price was $12.00 I’d call that a good purchase.

[@yl1974]

Thank you Gene for this video. The Yamaha YPAO auto calibration on the RX-V6xx series tends to set the center and surround levels 2 to 3db to high which does not sound good. At first I thought it was compensating for eq adjustments but having run the calibration on 2 models (673 on a friend's system & 677 my personal system) they both did the same thing. Using my Radio Shack meter set the levels correctly and now my system and my friend's, sounds balanced and clear. Having watched this video confirms I did the right thing. Thanks again.

[@allstar930]

Don't be like me and run autoconfig one time after buying my first big-boy AV receiver then leave the same settings for the following 9 years, move several times, swap out speakers, and lose the autoconfig mic. After watching these informative videos, I went through all the settings. All I can say is do your homework and trust your ears (and an SPL meter). They make very good SPL iPhone apps if you need one in a pinch. The one I use is called SPLnFFT and I've used it to level out lots of gear that I use to DJ with. For some reason, I never thought to take a fresh look at my home theater setup. Hell, my levels were all over the place. My surrounds were like 5db below where they needed to be (which explains why I never really could hear them). I'm an idiot, don't be like me.

[@adamcaveproject8299]

Great video! I have my radio shack spl meter from way back and wouldn't be caught without it for room setups. It's a great tool and helps a lot! Thanks for the C setting comment, I'll be doing that moving forward. BTW, SPL meter is awesome for my live band gigs. Very important to sounding better and at the right level.

[@adamm.1367]

This is a fantastic tutorial. It completely demystified the task of calibrating my speakers. I've generally had very good results with the Audissey EQ on my Onkyo (except for the pesky center channel that always seems to be adjusted low). But it will be great to be able to further adjust the levels beyond the automated config. Many thanks!

[@logan1966]

A spl meter is one of the best investments to get for your theater. After auto calibration, it is amazing to discover just how much off the system is. One thing also is most systems will set your speakers to large during auto calibration no matter what size they are. I think it is a good practice to set them to small if you have good subwoofers even if they are towers.

[@derrickmcpherson44]

Brian TV I was wondering I have a svs pb2000 an a cheap sony str-750 an klipsch f3. Speakers.should I set them small or large also should i set my sub to mono.

[@biteme263]

My denon does a pretty good at setting the speakers to small and getting the crossover points pretty close. It normally nails the distances too.

[@dazzz887]

Was able to pick up the digital version of this meter. That slow response option is a life saver.

[@tle999yt]

Thanks for the video. I still remember, decades ago, hanging around the Radio Shack store near my house with a paper pad and an HP-35 calculator designing Linkwitz-Riley filters based on their stock of op-amps, resistors and capacitors. I found my Radio Shack meter (Realistic cat no. 42-3019), put in a battery and it still works.

[@c.thiele1588]

I recently got myself an SPL meter and I am really glad, I did. The surround channels were 5db too low. I was also able to blend my sub better into the system. So it is really a useful item. But still sad to see how off Auto EQ was, and I relied on it for so long... Greetings from Germany.

[@boimesa8190]

auto eq on what device?

[@allstar930]

Same here. I spent 9 years with jacked up auto EQ settings. Worse yet, I've moved several times and never even reran the auto config. Yesterday I realized I lost the mic so I set the levels manually and realized that the rears were something like -5db below what they needed to be to be balanced. I'm an idiot.

[@therealshanelee]

I've owned that same radio shack meter for about 20 years now 👍👍

[@eddiewillers1442]

Me too.

[@redrooster1908]

@@eddiewillers1442 Me three.

[@TimothyTurtle32]

Same here! Worked for Radio Shack back in the 80's when they came out with it. Mine is light grey but everything else is the same. As a kid always wanted to know how loud my Dads boat was with the big chrome headers were roaring down the lake. You rarely would see this happen today but neat to see this device used by others. Mine still has that new smell because I keep it wrapped up unused. Too funny!

[@EdwardPCampbell]

I have had both versions of this Realistic (Tandy UK) DB meter. I gave the analog version to the manager of Wembley Loudspeakers, Hammersmith, London, about 35 years ago. I replaced it about 20 years ago with the digital version. Back in 1980, at the Olympia Sound Show , London, I had the old analog one checked. It was exactly correct, centred at the midpoint '0', according to an expensive, Bruel & Kjaer 4230 94dB 1000Hz sound calibration source, which fitted over the mike shroud. Good gear at a budget price.

[@HelveticaBold1]

Nice video! I recently used an SPL meter to calibrate my speaker. this video confirmed I did it the correct way.

[@XDefinitive]

Thank you, I really like how passionate you are about this stuff.

[@laurabrown7086]

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[@Dealete420]

I found your channel a few days ago, you've been a major help to this HT rookie. Thank you!

[@mikedinno8413]

I just bought one of the Radio Shack meters on e-Bay and love it. I was pleasantly surprised at how close my Pioneer SC-LX704 MCAAC came to the correct levels. Almost dead on. I ran my center a little hot like Gene suggests but I also ran my surrounds a little hot also. BTW, I want to share a little problem I ran into. I activated my 'Input Volume Absorber' in my AVR and it completely screws with your speaker levels so just be aware of settings when you do this.

[@joeswain2099]

Ok dumb question... my system starts the test tone start at 42 volume so I’d have to turn the DBs on the speakers up to 12db to get anywhere near 75db. Question is, what’s the starting volume to start with before I put the meter to it?

[@thepiecesfit5049]

Yes you generally have to turn it up. Denon/Marantz if your volume is set to relative scale it would be 0dB would give you a 75dB test tone. Absolute would be 80 (on Denon at least). It can vary with manufacturers. So it's best to switch it to relative and get used to it as it's more of a standard across different brands.

[@user-bf5rk2du5c]

This is an excellent informative video. I own the exact model Radio Shack meter and the amount of detail that you provide is impeccable. Thank you so much, this is of so much value.!

[@babymantuck3256]

HI, very informative video. Finally got me RadioShack SPL meter and ran the calibration using this video as a guide. Now my home theater sounds much better.

[@fennkell]

Now we’re cookin!!!! Casper DTS never sounded so great!!! Thank you

[@JDuBz815]

Got myself a meter. Followed your directions. Wow. Huge difference over MCACC. Thanks, Gene

[@andreika6681]

now get yourself acoustic panels and treat your room, chances are you get even bigger changes in sound quality :-)

[@JDuBz815]

@@andreika6681 I would but it's not my house

[@JC-bl9bo]

Awesome video, I've been looking for a video like this for months now after I found my old radio shack SPL meter. I've been using the Auto-calibration for so long I forgot how to balance the system myself. I couldn't find a video on you tube that properly explained it but here it is. Excellent, love Audioholics. I'm gonna go and check my levels myself now just to be sure.

[@CarAudioInc]

I have an idea for a video. The dos and don'ts of crossover points. What kind of slopes you like to run, thoughts on overlap/underlap, etc. Sorry if you already have a video like that.

[@Audioholics]

You mean on bass management of the system, not actual speaker design right? If the former, we usually recommend 80Hz as a starting point and sufficient for 90% of all installs.

[@anon7039]

80hz is the starting point for sub-bass because the wavelength is long enough where you cannot determine where the direction of sound is coming from - this is why subs can be put anywhere in a room without penalty as long as they are in phase with the main drivers

[@2010klaudio]

Great video! One question, I tried to calibrate my Yamaha Home Theatre System with a SPL Meter at 75. What should be the volume on the receiver or main knob?

[@deanlavis3775]

Claudio Martinez-Valle did you find out this question mate

[@2010klaudio]

@@deanlavis3775 Nope. No answer, thanks.

[@deanlavis3775]

Claudio Martinez-Valle I’m struggling with the same thing . All these videos don’t state where to start the master volume

[@2010klaudio]

@@deanlavis3775 Yes, Audioholics, and most of the KZbin channels do not mention it.

[@daltex81]

Put your volume at zero level or what they call reference level

[@vestrebio250]

Thanks for your videos. I have really learned a lot watching several off them. And my 7.1 surround system have benefit a lot from it, it's like having a brand new system. I really needed this help, because you almost need a higher engineer education to manage a modern receiver now a days.

[@HeavyMetalSonicRM]

When I use the pink noise in my AVR, my surrounds end up painfully loud, but when I use a DTS youtube video, my surrounds came out 3db lower. Turns out that -3db for surrounds is a common thing. With mains, center and sub at 75 and surrounds at 72, it blends together nicely.

[@richardwestmoreland4796]

I only recently learned about these SPL meters as I bought my AVR used and even though the Yamaha model RX-V781 when you buy it new is supposed to come with a microphone to run Yamaha’s YPAO calibration system I didn’t know that when I bought it used so I have been shopping for the appropriate microphone to use with my AVR but now that I’ve learned a bit about these SPL meters I might forego buying the microphone and just use a SPL meter. It would be interesting to know how accurate Yamaha’s YPAO calibration system is compared to the readings I get from the SPL meter but I think I will just buy a meter first and if I can find a YPAO microphone that fits my model of AVR that is not very expensive I might buy it for comparison purposes. Thank you Gene for your clear and concise video on this topic. Some of the videos that you do are a bit too technically involved for me but that certainly isn’t the case with this one. I fully understand that people have different levels of their ability to understand some of the more in depth information that you share with us less informed people who are interested in this hobby of mine. Thanks again. I very much enjoy and appreciate all that you do.

[@himesjon]

I like this format of your videos much better.

[@QueenOfMud]

"Levels changed by the cleaning lady" that's a funny name for your wife

[@frankcaruso6781]

Excellent advice been doing this for 20 years.

[@thepiecesfit5049]

This video is a bit old so there is probably something new. But if you run Audyssey on your system you should not use the internal test tones to check levels after. If you do know that the filters are disabled so it kind of defeats the purpose. If you want to correctly check your levels you need to use another source connected to your receiver. The easiest way is to use REW set up with ASIO4ALL which can send the tones to each individual channel. Just make sure you set it to -30 dBFS which will give you 75dB at 0.

[@SP-kk7rg]

Please upload more videos about audio calibration...

[@thejon1344]

Hello there awesome video! I just have a question what volume do you leave it at when equalizing your system?

[@rafacq]

When did the 75db level changed? I remember some calibration DVDs from a few years ago suggested you set the speakers to 70db (at 0db master volume)?

[@ChookyChuck]

I got my SPL meter around 2000. Mine is a Radio Shack one but it has digital readout. They also will reveal how different Artist Mix the audio levels on both Music and Movies.

[@S777H]

I have the REED SPL. It has a level option that says "Hi/Lo". Do I keep it at high or low? REED 8050

[@laurabrown7086]

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[@rts100x5]

I disagree with setting all channel levels evenly. Yes we all want a good balance especially in a 7.x.x surround system . Obviously this comes down to preference so there is no right or wrong , but I much prefer my LRC to be between 2.5 and 3db higher than surrounds.....thanks for the video sir . I use a Dirac 8 channel processor and even with a calibrated mic , I got my meter out of the drawer -set all my inputs to 0db and using the c weighted meter , tweaked the mixer level adjust in Dirac software to within .2 or .3 of my preference .. very very balanced soundstage and obviously with Dirac you get the benefit of mixed phase and Impulse response filters that dramatically address any speaker or room problems - especially in movie dialog coherence .

[@calinubro]

Thanks for the video! What setting should my subwoofer be set to while running SPL meter test? LFE? And GAIN 1/2 volume?

[@howardhuuues9866]

Your subwoofers gain and crossover should be set to whatever you normally leave it on...by that I mean whatever you normally set it to while watching a movie. Hope that helps...

[@richardbulot2785]

Thanks so much, your video has cleared up some confusion on the proper use of the SPL. And, I do have the old Radio Shack meter that I first used many years ago with my first AVR that lacked any auto setup features

[@rickgarza265]

I just realized my mistake on placement of the SPL meter where I positioned it just a few inches away from each speaker (duhhh) so now after watching this video I will do it correctly ... thanks for the video

[@docjohnson3980]

Here's your sign 😂 JK bro I'm sure your not alone.

[@mikebass2700]

Great vlog! What is your thought of downloading an SPL meter app for your phone?

[@jokerzwild106]

Thank you for making this video. Very helpful.

[@kshred3043]

The Radioshack manual states "The meter’s built-in microphone works best when you point it directly at a sound source." and "For the most accurate readings and the best polar response, point the meter’s microphone toward the sound source when possible.". That's obviously relevant when the goal is absolute accuracy in the case of a single source. For a traditional 5.x.0 system, pointing it at the ceiling makes the most sense. However, what about an Atmos system ? Surely the Atmos speakers would read too high relative to the ear level speakers.

[@davidmckee2898]

I've got the same sound metre but my digital. You are supposed to hold this up words. But what do you do when you are doing your Atmos speakers. Do pointed straight up or to the side👌

[@imnoone3916]

I’ve been using my SPL meter since my prologic days..

[@swayne1441]

Hey Gene! I don't know how possible it would be but I think it would be great to see a video talking about some of the great DIY designs that are available to people. Such as the stuff from Jeff Bagby, Siegfried Linkwitz or Paul Carmody. Most of the things they put out can easily be built by almost anyone with a good kit and can provide people with the sound of a premium speaker without having to sell your car. I think your knowledge of engineering could provide some great insight into some of the designs.

[@Kruptosman]

Thanks for this great video but how do you get into manual setup on yamaha?

[@jonsanchez1623]

expert advise as usual, how about the subs Sir -- should I also run it?

[@FitraHomestead]

What do u put the volume of the TV to do this test?

[@Havanero52]

thanks for video I have Denon 2400 I try to use the equalize but don't let me , i try many way .... can you please help me

[@Chat_TPG]

Hi Gene, just found your channel and love the content! So I basically had a similar question as I think someone asked but Im still unsure. When I start the calibration process to check for db levels. What volume level am I calibrating at? I.E. 20, 30, 40? Then I adjust the db lvls from my speakers to reach a db lvl of around 60/80? Using an older reciever Onkyo 626, Klipsch 30c, x4 Klipcsh CDT 5800-CII, & 1 sub Klipsch R-120 Thanks for any advice! I see you cover Marantz & Denon in many of your videos. Would love to see content on other receivers like Sony, Yamaha or even Onkyo. Or maybe covering troubleahooting when it comes to pairing them with LG/Sharp/Sony TV's.

[@ronbates9445]

I have a Anthrm 90 processor and used ARC genesis to balance my audio. Should I also use your meter trim method after the ARC calibration?

[@SWRMR]

Great video! For those of us that does not have an analogue SPL Meter device, can we use an SPL app via mobile phone or is it just crap?

[@Audioholics]

Not if you can calibrate it. Otherwise you can still use it to compare relative levels between speakers but overall output reading may be inaccurate.

[@TerminatorJuice]

So I just received a TrackLife SPL Meter after waiting over a week for it, and it doesn't have the C Weighted option... So should I just immediately return it for a different model if I want to calibrate my receiver to reference levels?

[@sirjoebuk3318]

Thank you for sharing your expertise on this channel balance. So, what is the difference with this or how does the channel level adjust integrate into all these? Basically where one hit the option button on the receiver's remote and confronted with all these level adjustments.

[@silicondt1]

Question: At 6:14 you lowered the master volume level. Shouldn't you have lowered the trim on the speaker you were testing till 75db? If you lowered the master volume wouldn't that make it 75db at whatever you lowered it to?

[@FitraHomestead]

Daniel Barnett I want to know this as well

[@ss4717]

I think he did miss it, but the point was not about the volume! it was about the device, if he had not lowered the volume nob we would not have heard him talking! Hence.. good on him to lower the perceived volume. lol

[@biteme263]

He wasn't actually adjusting anything, he was just explaining how to do it. You will notice he didn't change any of his levels, it is already calibrated.

[@KillerSneak]

I know this is pretty old video but it’s very informative. I do have a two questions. There are 2 settings I can use to add gain/dB on my Denon. There’s also a source level depending on what source (HDMI) is used. Should this always be on 0db as well? And would an app on my IPad also work to measure the sound (as I don’t have an SPL meter “yet”)

[@weimin3928]

Ran an SPL meter for the first time on my Yamaha Avantage RX-A8A (5.1.4). Previously, I left the job for YPAO to do. Happy to say there were only minor (1db at most) imbalances. However YPAO chose to have my subwoofer down about 8db but I am happy with the way it sounds. Would you suggest anything? Thanks!

[@mauranomanon1974]

How high the master volume should be before I start testing?

[@alambe7275]

Hi enough so that you could hear the static noise when testing each speaker

[@pauljames1586]

Hello. Can this be done with a regular amplifier? I don’t have an AVR. Thank you.

[@Elricky124]

Hi Gene, do you still use an SPL meter? What is the difference between this and the Ru or REw device you mention in some other videos?

[@Stevo19801]

I find adduessy sets the levels at 75db with multieq engaged with it off it's about 72db, the reason is the curve is boasted in places to make it flat. So I would recommend genes advise to check all levels independently, especially if you have multi eq off.

[@JakeNaughtFromStateFarm]

I used an SPL app on my iPhone, just to give it a try (it was .99 cents). I set the range to 70, C weight, and slow response. I had my speakers at +12DB (most I could go) and they were only reaching 56DB on my meter. Do I need to do something with my volume? Or is the meter app just not that good and off that much?

[@stevenmetz5363]

Apps won't cut it. The reading you get from a meter will definitely be different.

[@chrisohrling149]

This is a very good video on how to set up the sound for the speakers and I don't have a auddessy mic at all or any mic to do a proper setting and when I go to the speaker level to adjust the levels I don't get a hissing sound like yours sound but I get a clipping sound from my speakers and I have 4 power amplifiers running all of my speakers and my front stage speakers are cerwin vega speakers and my speaker levels are set to + 9 and my back speakers are set to + 10 and my power amplifiers are hooked up to the pre outputs on my pioneer VSX-1016 TXV receiver and I need help on this as I don't want to damage anything and please let me know what I can do to fix this do I need a pre amplifier for my home theater system as I don't know what to do and I have 7.1 speaker setup please let me know thank you

[@familytime2891]

thanks especialy for the idea about the center chanel , i got to go and check that righ now .

[@joeydelmarsjr.646]

so when calibrating your speakers with an SPL meter, what dbs should you start off at??? on the AVR

[@danieltremblay8355]

Very good video Gene, one thing that surprised me is the tonal difference between the center and the right mains since the speakers are all RBH.

[@Audioholics]

Yes but the mic wasn't positioned in the center of the listening area and the center is also horizontally mounted so that plays a factor especially when using pink noise.

[@mikecruz5246]

I always check the levels after auto calibration . The receiver tends to set them higher but it does get distance right . I wonder if you have heard or tried a dirac setup to see if it is as accurate as some say it is .

[@Rj0222lj]

Great video. Got an spl meter to calibrate my system but when I go to test tones the pink noise I very low. Too low to calibrate. What am I doing wrong? Have a denon avr-x3300. Do I need to be in a certain input?

[@Jebus4mvp]

I'm wondering the same thing

[@FitraHomestead]

RJ919sx I want to know this as well

[@sriha37]

Try increasing the master volume of your av receiver

[@jeppujee6242]

How Much?

[@derrickmcpherson44]

Jeppu jee til your left speaker hit 75db.then you go around and test all your other speakers don't turn or lower your master volume at this point.use your up or down botton on your remote to lower or up the dec

[@JohnConboy1]

Hi Guys. I recently purchased the Kef T305 speaker package along with two Kef in ceiling Atmos speakers. I have them connected to a Denon AVR-X3400H receiver. As the T2 sub that came with them doesn't have a volume control dial, I left it to Audyssey to set the sub trim which it did to -0.5db. After calibration, I used my Radioshack Digital SPL meter to make slight adjustments to get everything up to 75db, but to get the sub to hit 75db would mean increasing the sub trim to +6db which I feel maybe too high. I spoke to someone on Avforums who said I should put it back to -0.5db as per Audyessy as I would need a special SPL meter with Z weighting measuring brown noise to get an accurate measurement.Any advice would be greatly appreciated. Sorry about the long winded post.

[@thomaswu3378]

Gene, great video, I am learning how to calibrate my system and this is perfect, thanks! But I do have a question if you don't mind, at what level should I turn to volume to with my Denon during the Test Tone broadcast? This is the part that I don't quite understand, please advise!! Thanks!!

[@mephInc]

Sweet the receiver to 0db while running your test tones. Then bump up or down each speaker individually so they are all at 75db with the test tones. This way you have lots of head room while watching content

[@sgshere]

Hi Gene, I randomly listen to your videos and or visit online articles from which I have received wealth of knowledge so thank you for that. If possible, I would love for you to address my issue. Recently bought a SPL meter in hopes of manually calibrating my speakers. I have an Onkyo TX-NR787 9.2 ch. AVR with 5.2.4 atmos setup. This AVR doesn’t let me alter the master volume using the remote or even using the dial when playing test tones manually. I could clearly tell the test tone is not being played at reference level partly because I can tell that it’s not loud enough but also because when I perform AccuEQ auto calibration setup, it plays multiple test tone at different dBs. Is there another creative way to manually calibrate speakers with such AVRs. I literally have gone through the entire manual. Thanks for your help!

[@briguy6868]

Gene is it good to have the input level of devices set at plus 12 and have speaker levels at plus 10? Theater sounds awesome but I'm still going try audesy calibration tho to see what it comes up with

[@WindyCity1014]

This is a really informative video, but I'm still a bit confused about how to start out the calibration process. I have a Denon that automatically adjusts the master volume to play the test tones at 0dB as I believe you mentioned. That is louder than I would normally listen as well, but I am still confused as to how to adjust the master volume for the fronts. I think you mean that I should set the pink tone trim for the "fronts" to 0dB and then reduce the master volume until the SPL reads 75dB in the listening position? Since each test tone plays out of a separate channel, would I only do this for the FL? I don't see how I can set both the FL and FR to 0 and reduce the master volume get 75dB from each of them at the same listening position?

[@Agent-fg9ol]

I'm glad I'm not the only one who's onto those pesky cleaning ladies.... Great video as usual!

[@laurabrown7086]

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[@aussie_philosopher8079]

Hey guys I'm getting back into surround sound and curious where I can find the GRAMMY or SMPTE specifications for 5.1 placement and calibration. I couldn't find much good info.

[@oscartirado8146]

Do I still need to do this calibration if I'm running a 2.0 setup? I have two Klipsch RP-280Fs and may add a sub in the future.

[@waynegram8907]

Audioholics, how do you calibrate a speaker cabinet that has 2 or 4 speakers in one speaker cabinet for audio? because each speaker can have a different SPI level so how to you set each speakers SPL level.

[@bigbritx8824]

Very informative video. I purchased an SPL meter, ran the measurments and wow, what a difference! One question, i have a pair of DefTec BP9020's with 8" integrated subs in the front with a BIC 12" sub in the back corner. How do i set volume level on each sub so the 3 of them work in unison at the same level?

[@Audioholics]

It depends how you have the DefTec subs hooked up. I assume you have them hooked to the front left/right channels with no line level sub out connection from your receiver. In that case, you need to run wideband pink noise (not internal test tones of AVR) for each channel as well as the subwoofer channel. Alternatively, if your speakers have line level inputs, connect the sub out from your AVR to each of the towers and BIC sub so all 3 units get summed mono bass + LFE.

[@bigbritx8824]

Audioholics LFE out from AVR y-splitter so the sub and both towers have LFE in.

[@Audioholics]

@@bigbritx8824 good, so just turn off all but the sub you are testing and measure SPL at the 2 most important seats. Then do the same for the other 2 subs, one at a time, to get the levels to match.

[@Eurica76]

Hey Gene what's the best why to level match Atmos speakers ? Or could this method be used also ?

[@pabloosvaldopenizzotto1098]

I Gene. I do have the same SLM as you. i have used it to adjust channel levels for my Denon AVR 1611, but not also for this purpose only. in fact I am trying to do manual Eq. Of my system. What weighting curve you would use for manual Eq.? A is the one that, let say copy the human ear response curve (as far as I know), and therefore is used for noise measure in working place environments. Do you think that it is good to do the measurements for system Eq. Instead of using C weighting? I look forward for your comments. Thank you in advance!!!

[@SwirlingDragonMist]

Any experience with cellphone's stock built in mics, or with microphone attachments like the Rode ixy, or the Zoom iq7.

[@maze400]

Room EQ corrects timing of the sound waives so they arrive at a designated spot at the same time. The SPL lets you level out and balance those waves. I have the Onkyo NR7100, I have run the Dirac live for room correction and SPL levels... Question, on the Onkyo when running the pink noise levels the amp sets the volume to 82db's I assume this is the zero reference level you mentioned? I never listen to movies above 65db's and TV at 50-55db's, should I run the SPL at my listening volume or the reference volume?

[@ShaileshPatel-le8cq]

Sir what sound volume i should set on AV Receiver while using SPL Meter for DB Level. I mean it should set 50 or 70 etc. Pl reply.

[@MichaelGreco]

Thanks so much for the video! I'm a bit confused on the master volume. I have a Denon 3400 H and I can either do 0-98 volume level or -79.5 to 18 DB. You mentioned 0db, if I select 0db that works out to 79 on my volume level which is quite loud. But perhaps that's where it needs to be to start adjusting the speakers? Thanks in advance

[@Audioholics]

No, adjust the master volume until the fronts read 75dB at your primsry listening seat. Then adjust the channel trims so ALL of the other channels match. Note the master volume position after as that's the # you need to be at IF you want to listen at reference level assuming the source material was properly mastered.

[@MichaelGreco]

@@Audioholics thank you!!! So you leave the fronts at zero db and just adjust the master to reach 75db?

[@Audioholics]

@@MichaelGreco yes

[@e85johnson68]

@@Audioholics Thanks for this comment, makes a lot more sense now! :)

[@johnpoo1662]

Are you using a foam windshield with the SPL meter?

[@Cristianino87]

hi, shouldn't the subwoofer be set on the sound level meter 3 db less than the speakers for a flat response? thank you

[@Djddshhdheh]

But what are you raising the avr volume to while testing the speakers

[@romanlewandowski9616]

Great video Gene I just brought one had to get it from England works great

[@NathanBRing]

My speakers are postined in the right places and is the same distance from one to the other as it would be but the level balance are or not the same, some are -1 db then the other for instance frount right and frount left will have a 1db difference from the other.

[@Adam9306]

Hi, When it gets to the subwoofer, the meter really does get shaky. It never really stays on 75. What's best? Between 74db and 76db, or 75 and 77db?

[@danielryno117]

I just purchased an SPL meter and I was wondering what volume do you start at on my Yamaha when the microphone sets up it the volume to 0 do I set it to that or do I set it to my normal listening volume.

[@mendez77054ify]

Daniel Ryno wow, I am having the same question right now.

[@mendez77054ify]

If you look a couple of comments below they responded with an answer. Good luck.

[@danielryno117]

mendez77054ify where is it at I can't seem to find it. What I did I set the volume on the receiver to 0 it's at the SPL to 75 DB to c weight ans set home speakers that way.

[@ss4717]

set 75db of test tone to where its comfortable! if you want to do to standards of your system specs, hdx, ect... set it to that. the averge is 80db, I would not go more than 79 or 80 db,. ... remember to turn the volume low and slowly increase it till you hit 0. in the video He says that he listen to his system at -10 usually , I listen to mine at -30 always, I hit the power on the denon and it goes to -30 straight away. but if i push it to 30 I know that the sound was mastered with the intension of it being able to listen at ''0'' without distortions/breakups...ect...

[@nuclearcrypto7743]

What if your sound level meter only has A weighted, should I go and buy a more expensive one that has a C weighting? Does it matter that much?

[@markjones2349]

I have a set of Logitech Z625 which are 2.1 speakers. The center detent on the bass knob seems overkill. Since I am just adjusting the bass relative to the side speakers would it be better to just play white or pink noise and use a spectrum app on my phone and adjust the knob until its flat?

[@BruceWayne-jg3hv]

When calibrating speaker levels should the calibration be centered around the center of the room, where you will be listening, or spread out across the entire room in order to get the best sound? because my receiver has six positions for calibration, but I need to know if it should be calibrated toward the center of the room within several feet of each calibration or spread out across the entire room? Please help any input will be appreciated.

[@Audioholics]

The calibration should be done at the primary money seat. If you have two money seats, then you'll have to balance as best as possible between the 2.

[@BruceWayne-jg3hv]

Should the calibration be done for all six tests in the same area (The primary money seat) without moving the meter or the audyssey mic?

[@paulmardis1512]

Hello Audioholics, my master volume on my Marantz is set to 65% before starting to test. When i go into channel levels do I increase/decrease each tone level to 75db or use the master volume to get to 75db. Right now after re-running Audyssey my levels are reading around 63db on my Radio Shack digital SPL that I have owned since 2003. What am i doing wrong? PM

[@nitrodarrell]

My mains, centre and surrounds have been set to give 75 dB with a test tone (SPL meter set to Slow, C-weighting). I am now running a test tone into the sub. Theoretically, should that level be set so the SPL gives the same reading as with the rest of the speakers (ie 75 dB) ? When I do so, the sub still sounds damn quiet, even for film scenes which are well-known for thir LFE's....unless I turn the sub up, but then I'm not sure if it's turned up too much and it's delivering extra base which the film director doesn't intend the audience to feel.