Triple Subwoofer BASS Measurements! minidsp 2x4HD works magic. Order with code Jilesgsg

[@JilesMcCoy]

Check out the channel for more new AV and Home Theater information: bit.ly/JDM_World_KZbin

[@DREDKNOT2063]

hey could post some sound demos of those sub in action ,id love to hear how the low kick on some tracks 15sec samples would be fine ,i think that the limit before copyright kicks in , so heres some suggestions massive attack - risingson -sample- 0:15 - :30 massive attack - inertia creeps -sample- 2:30 - 2:45 massive attack - i am home -sample- 0:00 - 0:15 (my prefured fave for my subs) a perfet circle - Outsider (Apocalypse Remix) sample- 4:15 - 4:30

[@donald.2122]

@JDMWorld, u made a video to the wheels rental bikes and deactived the comment section, therefore my question is do you know the names of the bikes, and if where they could be ordered?

[@JilesMcCoy]

donald. I don’t. They are just rentals in San Diego.

[@nikoalfonso8462]

A tip : you can watch series on Flixzone. I've been using it for watching lots of of movies recently.

[@bowenalfonso3208]

@Niko Alfonso Yea, I have been watching on flixzone} for months myself =)

[@andy16666]

This is a great example of why we generally use multiple subs on stage staggered at different distances from the audience. I remember years ago, setting up for a show, we did a little test with a 40Hz sine wave. We had one of the roadies walk from the back of the seating area to the front, and raise his arm when it got louder. It looked like he was drawing a sine wave with his arm, with dead spots at regular intervals. My hypothesis is if you change where you measure you'll see different dips in different locations. The different profiles of these subs' enclosures helps you, but the fact that they're in three different places also helps you a lot. In fact, 3 of the same sub would probably yield a fairly flat response too. Great content, once again. I love your videos.

[@jamiet74]

Your room/subs shows the exact reason multi-sub is recommended, your subs almost perfectly complement each other's peaks and nulls. You definitely lucked out there a bit bro!! - I don't think I've ever seen a better example (considering no time alignment was used)

[@JilesMcCoy]

It was very fortunate synergy amongst those 3 subwoofers!

[@pokerbarloahavia]

my favorite youtuber about to pull the trigger on 2 21 in ch full marties and 2 21 inch devastators

[@JilesMcCoy]

That will be a monster system.

[@pokerbarloahavia]

@@JilesMcCoy that's the aim brother :) I want to build something that will last 10 years lol and not get the upgrade bug.

[@budgetaudiophile6048]

Mr. 504 would be proud!

[@JilesMcCoy]

Indeed... if he would just give me a shout out!

[@MindUnwindSleep]

If you can get them over there I am a big fan of PKN controls amplifiers, I have a XE6000 running my two 18" subs.

[@JilesMcCoy]

Thanks!!!!

[@davidjeanpierre2358]

Great video! That's a freaking awesome combined response. I'm looking seriously at the devastator to add mid bass to compliment my mini marty's low end. I'm torn between one devastator or two 18" mbm's from gsg for mid bass. Keep up the great work! Just subscribed.

[@JilesMcCoy]

Thanks! I am all about the Deva. Its really an all around beast.

[@davidjeanpierre2358]

There's a devastator in my future. Calling Kevin today!

[@johnedel5953]

If you could only keep 2, what 2 would you keep? Also factoring in the kracken to the equation.

[@JilesMcCoy]

It really depends on the room. Which ever I could hide behind a screen becomes a strong contender. Just for raw output with these the devastator is up there. But the new dual18" , 21" and sealed 24" cabs look interested. Particularly if they fit behind your screen. 2 of the dual 18" cabs with low FS subwoofers (not high tuned PA drivers) would be ABSOLUTELY AWESOME.

[@johnedel5953]

I was trying to decide between these. 2 devastator or 2 full marty/ kracken or 1 devastator with 1 full marty/kracken. One near field, one front corner and space is not a problem . Any thoughts? Great channel, helps out a lot in my home theater Journey!!!

[@JilesMcCoy]

@@johnedel5953 Man, those are all really crazy good. But I would go with dual devasttors if you can. Thats is soooo much bass and they also do really well up in midbass world too. KIller stuff.

[@dadevastator24_77]

You should do a video calibration them with the mini Dsp 2x4 hd

[@JilesMcCoy]

That is what I used to do the EQ.

[@spatel30]

Agree. It would be helpful if you can shoot a video showing how you calibrated them using REW and mini dsp 2x4 HD. BTW, love you channel. Keep up the good work. 👍🏻

[@erikkroll2154]

Davies504. Slappa da bass! Nice curve on the subs! I bet they sound amazing.

[@paulwillett9942]

Nice Setup there of subs!

[@JilesMcCoy]

Thank you sir!

[@budgetaudiophile6048]

Okay, real comment time: Running the crossover lower than 80 on your mains isn't really recommended, even for those of us with big speakers. I've got massive mains with big drivers (dual 12s up front, dual 10s surround side and 8" rears) and I still cross at 80. When you cross super low, you're basically throwing an additional sub into the mix and that will throw off your measurements and sound profile. I used to cross at 40 and 50, heck I even would run my mains at full range, but once I learned the magic of crossing at 80 (or even higher), my theater came together so well! All of that said . . .for your sweeps, what level do you calibrate your subs and what level in the AVR do you run your sweeps? I guess I should also ask what level of attenuation you have in REW. Just out of curiosity. I run my sweeps at -20 on the AVR and -10dBFS in REW. I would love to see how those subs measure with proper time alignment, I bet that'd be super flat.

[@JilesMcCoy]

I will cross over the speakers the mains just at the point where they are able to help overcome some of the room deficiencies. I agree that large speakers in mains in a home theater are mostly worthless. I see no need for anything beyond 8's since all sub duty will be handled by the dedicated sub resource. That being said, I do have towers with 12" PRs supporting the 8" woofers. This is fun if I ever want to do 2 channel without subwoofer support. (I almost always run my subs though.) I typically runs sweeps at a number of different vol points on the avr. REW is pretty much set at defaults. For me this response is flat enough. I like to have a house curve toward 40/50 hz for action movies. Otherwise a curve that is within 5DB is rocking good enough. I time align in order to correct impulse issues due to disparate subwoofer placement.

[@gufiaito69able]

I wonder how the cube would measure with the Dayton 18?

[@JilesMcCoy]

I put an ultimax in and liked it much more. I don't have comparative measurements but I enjoy the Ultimax in this box more personally.

[@jonathansmith1010]

@@JilesMcCoy why you preferred the UM18 over the NSW4018?

[@JilesMcCoy]

@@jonathansmith1010 I like the sound of the sub better. Not so PAish.

[@BB-butcher99]

What speakers are those LCRs and surrounds?

[@JilesMcCoy]

Those are Starke Sound IC-H5 and IW-H5. Amazing speakers!

[@MyFatherLoves]

Time alignment allows for far less EQ and gets rid of transient smearing. It's a necessity. Like... you're wasting money if you aren't time aligning.

[@JilesMcCoy]

Right on!

[@albertbrooks2979]

I just watched the Marty Cube build with the LaVoce driver and yet this Marty Cube has an Eminence Driver what;s going on? Did you build another cube or replace the driver in the cube you had? If so, why?

[@JilesMcCoy]

I swap drivers all the time just to try out new stuff.

[@albertbrooks2979]

@@JilesMcCoy I thought so which is why I asked if the Kracken would be going into your Devastator box as some point you just didn't seem to thrilled about that.

[@sandipdutta5859]

Is it enough for outdoor ??

[@JilesMcCoy]

People use the Devas outdoors.

[@trevor5333]

Hi Jules, great stuff. I am confused though. When I put the 12db boost in as recommended, looking at it in winisd, cone excursion is through the roof, am I missing something here. Your inputs appreciated

[@JilesMcCoy]

I dont know. I follow the instructions from GSG and it works like a charm!

[@mattvaught4689]

I like your videos and thanks for showing how they go together! Are you putting any Polyfil in your subs? I never see you put any in so I was just wondering. Thanks!

[@JilesMcCoy]

Hi, not in the marty kits. Its not recommended.

[@mattvaught4689]

JDM World Oh ok, I did t know that. How about the Devastator? Have you tried the 21” MBM with the Eminence with the 4000 watt amp? I wonder if it would do more than the Devastator? I am looking around for subs and I have Def Tech Reference subs right now. Thinking of building my own.

[@JilesMcCoy]

Matt Vaught I am looking at building a 21” Marty to compare to the Deva. I don’t have an amp that big though.

[@mattvaught4689]

JDM World Oh ok, what amp do you have running the Devastator now?

[@JilesMcCoy]

Matt Vaught Crown 1502. Id like to put a big guy on there and see what it does for the eminence.

[@trentnell]

Did you run the Minicube up to “Max SPL” ? I want to try this driver 18” Eminence driver. How much more SPL do you think it has over the Ultimax, I know the Ultimax will dig deeper but am hoping the Eminence with have higher SPL.

[@JilesMcCoy]

I've never tried to get to max SPL. My mic wont even test over 122ish DB without clipping.

[@trentnell]

JDM World Thoughs on one VS the other since you’ve ran both in your room?

[@bangdollarsign]

Pointer trails... The only Windows feature worth a damn

[@JilesMcCoy]

Excellent... point! I'll make sure to turn on for the next one!

[@ChannelBri]

Nice looking graphs. I ended up with a powersoft 4804 off ebay, 1200 into 4 channel for my 4 Um18s. Wanted 1 rack unit amp. lab gruppen C are cheap occasionally powersoft. Keep your eye on ebay, also guitar center can negotiate. Speakerpower? Good luck!

[@JilesMcCoy]

That 4804 looks like a beast. For sure one to consider!

[@ChannelBri]

@@JilesMcCoy nice and efficient, trigger on, pretty quiet fan but can't swap easily, good with uneven loads, not a speakerpower but still good

[@archos121]

How about a SpeakerPower - expensive but bags of power!

[@JilesMcCoy]

Their gear would likely be perfect. I'd love to show them off one day. They need more exposure.

[@mikesullivan4800]

I’ve watched a bunch of your videos if I have room for one sub what is your choice? One full marty or Devastator. 18 or 21? Your choice of driver and amp? Just trying to get your opinion of the best setup. Being you made them all. Thank you!

[@JilesMcCoy]

It’s a toss up between a Dev and a Full Marty.

[@JilesMcCoy]

I need to hear this Kraken because it might change my opinion. For what I have heard so far I like the Dev with the 21” Eminence and the Full Marty with 18” Ultimax.

[@mikesullivan4800]

Ultimax does look better visually. Thank for your reply. I might stack two full on top of each other. Decisions decisions

[@anandshah71]

Buddy if possible check out Hypex NC2K OEM module with the matching poswersupply u will forget crown It’s expensive and you will hear bass notes not possible in PA amps I have experienced the lower power modules it’s outstanding

[@JilesMcCoy]

That looks beautiful. Do you DIY a case for it?

[@anandshah71]

You can get from www.ghentaudio.com

[@anandshah71]

I am using a pair of dual 15” PA drivers and Hypex gives the best bass and also for mid highs too. No need of crown or class a or class ab

[@elviscera4661]

@@anandshah71 Where did you get your hypex gear? I do not fine anyone supplying the modules/ps?

[@anandshah71]

@@elviscera4661 it's OEM so you can get build amps from apollon or Buckeye amps Nord amps or check ebay sometimes

[@pokerbarloahavia]

get a sinbosen amp fp22000q

[@JilesMcCoy]

I will check it out!

[@robscorner7012]

I'm really liking the videos, but did have one thing that I did actually want to bring up because I think it is important for your use here. You mentioned in this video that due to the capabilities of your surround and main speakers, you plan to cross the subwoofers over at somewhere around 70-75Hz. I just wanted to remind you that when watching movies, the LFE channel doesn't just play the frequencies below those speaker crossover points, but does indeed have its own track information encoded into the soundtrack, and that information actually goes up to 120Hz. So, if you set a low pass filter on the subwoofers below that, you will not be playing any of that LFE specific encoded content at all. This actually gets frequently overlooked by people because they just assume that the subwoofer's only job is to play content for the other channels that falls below their crossover frequency, and don't realize that it also carries it's own dedicated channel content in the surround mix. Hope this is useful to you, and I look forward to watching more content!

[@JilesMcCoy]

Hey Rob - I don't set any cross over on the subs themselves (or rather set it to the highest possible setting as that I don;t want a crossover in a sub impacting the incoming signal). When I speak of doing cross over work this is at the processor level. So the LFE content is always 120hz and down going to the subs and then I tweak the crossover setting between the subs and the other channels to create the smoothest transition depending on what the room is doing to the sound. So what you end up with is the sum of the 120hz and down LFE content and then the content from the other channels depending on where each channel is crossed over. Sorry this wasn't clear in the video.

[@robscorner7012]

@@JilesMcCoy gotcha... I took it as you were setting a low pass filter on the subwoofers themselves. Just looking out 👍. Out of curiosity, how does that devastator do in the 80Hz+ range. Been thinking about building a few of the scaled 18" variants from the AVS forums, but I'm a bit worried about the output bandwidth limitations that most of the horn designs are known for.

[@JilesMcCoy]

Rob's Corner Thanks for helping to clarify that for everyone. I’ve not actually ever used the DEVA over 80 hz. My mains all have 8 inch mid bass drivers so they are very competent in that frequency range. The Deva is a beast from 80 hz down though. That I know for sure.

[@Quetzalcoatl0]

an fb14000 clone would be a good choice for power.

[@JilesMcCoy]

I will check that out. Do you have any brand suggestions?

[@Quetzalcoatl0]

@@JilesMcCoy I've just read about it in the AVS forums. Haven't planned on getting one, because i don't need one. But there is a guy with 100k watts of amplifiers that have like 8 of them. Maybe you can ask him, create a thread or search more info about it =/. I know that they are from china and with this covid-19 i'm not sure if its possible to order one.

[@abielpangga6314]

@@JilesMcCoy lab gruppen fp14000 clone If not go for a used powersoft k10 on ebay Someone had 4 left for only $2000 each The retail on those is 8000 It can do 2ohm on 2 channels with 2000 watt each 4 ohm 2 channel 4000 watts each 2 ohm 6000 watts per channel And a whopping 12000 watt 4 ohm bridged

[@liljb-gn8zk]

The D in JDM now stands for Davey

[@JilesMcCoy]

Winner!!!! My kids have watched him a million times!!!

[@JilesMcCoy]

And my BASS is much stronger than his.

[@chrisjohnston9503]

Buy the svs ultra plate amp they are selling to upgrade there older sb13 ultra series, 1,200 watts RMS, 4,000+ watts Peak $399

[@JilesMcCoy]

Ill check it out.

[@sickjohnson]

I was going to recommend those Crown amps again till you mentioned the hiss due to the floor noise...doh!

[@neonphoenix8951]

C Johnson it’s a decent noise floor on the amp, the issue is that the driver is quite efficient

[@Quetzalcoatl0]

Sadly, after reading some measurements they have a high noise floor.

[@JilesMcCoy]

If I had the Crown 2502 it might be a different story for me.

[@davidperkins4139]

Why don’t you wire a couple subs in parallel to drop down to 4 ohms for your amp? I’m building 4 MBM’s right now, they’re all 8 ohm subs, so I’ll daisy chain 2 and 2 and have my 2 channel crown amp run (2) 4 ohm loads. Voila!

[@JilesMcCoy]

I am going to give that a spin when I get that 2nd unit finished up!

[@davidperkins4139]

@@JilesMcCoy if you're using speakon, this adapter would work perfectly for the daisy chain slash parallel wiring: www.amazon.com/Splitter-Female-Speaker-Connections-Cable/dp/B015EUTOMU

[@WeslarWaven]

10:10 Davie512? Don't disrespect Davie504 like that

[@JilesMcCoy]

Ha!

[@degreesdegrees-jr4eg]

Please do a cable test. Do some spl test with thik wire from amp to woofer. And then do a test with super thin wire.

[@JilesMcCoy]

There wont be any difference.

[@JilesMcCoy]

You just cant go too thin.

[@degreesdegrees-jr4eg]

@@JilesMcCoy please proof it. And thereby get some views. Ppl talk allot about cables

[@Bruno-ju1uy]

Would give me some oculus quest

[@everydayguy3737]

Please tell me you never went through with crossing your subs over haha you leave LFE ALONE!!! its a dedicated channel and its 3-120hz, you leave it alone, or you are cutting off content.

[@JilesMcCoy]

Hey - I put in a HPF at about 16 HZ for all my ported subs. Thats the only way to keep them from killing themselves.

[@everydayguy3737]

@@JilesMcCoy I was referring to your statement about crossing the subs around 80 because your mains have multiple 8" woofers. A LPF- HPF is expected with ported.