DIY Tectonic BMR Build - Lepai LP40PA Powered Bluetooth Speakers aka "Little Slappers"

[@terrykemp8131]

That's fantastic Joe. I am sure that your sister loves those speakers. As a budget audiophile, it has always been a dream of mine to be able to build my own speakers. Imagine having speakers that sound exactly how you want them and not having to pay a fortune for them. Thumbs up!

[@joentell]

It's really satisfying to design and make your own speakers. It does take a lot of experience to get something to look and sound how you truly imagine. That's the tough part actually.

[@TheSFFV]

Wow those sound amazing for their size. I would recommend listening to playback on a decent system or some good headphones. That baaaaasssss was impressive for such a little driver. A little EQ and you could get that response super flat. Nice work.

[@joentell]

That's right, a bit of DSP would make these sound sweet. You can also do some work using a basic graphic EQ too. But yeah, these slap! 🤣

[@stevenveerhoff9208]

these sound kind of Mid forward, and yes, you can hear that 2k drop. Very impressive for a small box. Really impressed with the vocals.

[@svalbard01]

This video is DOPE! I was just looking at parts-express thinking about what would be a cool budget build. I'm about to hit up that Patreon Joe N Tell. Nice work man!

[@joentell]

Thank you! I'll be there to answer any questions. DIY builds are never as simple as they seem and there always little problems to work out. That's part of the fun though.

[@hydroaegis6658]

Taking these drivers to their full potential and you get the BMR Philharmonic speakers.

[@satanertau2689]

The best is watching you two listen together. You can't fake that sht. I'm thinking about a pair in my dash.

[@wccrispy]

Your sister seems chill so I'll forgive her K-Pop preference. This turned out really cool. Good stuff man. (from reddit)

[@joentell]

Thanks for watching. Yeah, she's into it. 😊

[@3rutu5]

Love these drivers, found that a 0.15-0.17cuft enclosures, with 1inch ports but I only went to F0 of 58hZ

[@Luke-qs2cg]

That's similar to this sealed box. Probably f6 at 40-45hz

[@BobBob-tt3fe]

Pretty cool,hope she likes it.👌

[@joentell]

Thanks! I think she does already.

[@timwilson3435]

Thanks Joe.

[@joentell]

No worries, I got you! Hope you had a good laugh.

[@timwilson3435]

I sure did man. I was also really intrigued by this BMR technology. I had seen some over on Parts Express but I hadn't taken the time to learn what they are. Very cool.

[@gilberttahimartin]

Awesome! Loved the happy reaction. Good job

[@jdbugman]

I have used these speakers before and the one thing that i found is that they need to be burned in for a long time but after they work in they sound Amazing. They are a little muddy at the beginning then they brighten up and mellow out. Play them on the louder side for a couple hours. They are also really forgiving on the box you put them in. Can’t beat them for the money

[@stallion63m35]

After you've burned them in,how high can they hit do you reckon?

[@wric01]

Perfect size driver for a cheap ceramic cup build.

[@bunlongvy1111]

wow 😮 the mid and low are really sweet 🍓

[@joentell]

Yeah, not bad at all!

[@Mixing_It_Up]

Joe those are tiny and sound great! Nice job big bro!

[@joentell]

👊😎

[@justins.1283]

Nice for a full range.

[@Crushonius]

you really need to make some higher end full range speakers you would be surprised how good they can be

[@Luke-qs2cg]

I say, add the tn28 tweeters on top, and maybe a sub driver, though the sub driver is super optional. I got to listen to a set of these drivers in a similar box, they go SO low for what they are

[@OscarHernandez-ym4hx]

She knows What's up. Lol. Sounded like it neede a tweeter maybe their smallest version. Anyways all in all great sound. Thanks.

[@davidhoover2446]

Dude all the gloss black designs you showed from Parts Express were mine! Haha. Yea, these are nice speakers.

[@joentell]

Oh no way! Those are freaking awesome! What is your experience working with these BMR drivers? Please tell all! I saw some gloss towers and some satellite speakers. I'm curious about both.

[@davidhoover2446]

@@joentell very nice! The cube speakers with subwoofer are sealed. Standard slope .7 I believe it is. They are the 3.5" ones. The system uses 1/2 inch MDF. The signal can go in via RCA or bluetooth, which are both fed to a mini DSP. The speakers/sub crossover is at 90Hz on those. High pass on sub is 30Hz. EQ is minimal on the satillites. A small boost at 2K and a small cut at 12K. They sound really nice, especially with the sub going to 30Hz. I designed the sub to be efficient down low, but with a high impedance from 70-90Hz, so I could push the EQ up near the crossover point and still drop very low. They use two 50Wx2 Sure amplifiers from parts express. I build 5 if these for a client. They were very happy. I used Styrene Acrylic on those for the gloss black. The small towers was a budget build for my brother and sister in law. RCA ins only straight to a 15w x 2 amp. I built in a ramp up from 500Hz down to 50Hz to compensate for lack of baffle size at least a little. They are very impressive sounding. They have a little smiley faced sound (probably due to a small baffle), but it sounds very pleasant. The on/off button is an automotive soft touch button. Rap music isn't even a problem with those. I used Duplicolr Laquer on those and I'll never do that again. What a mess! lol. With Styrene Acrylic you don't need a reperator or acetone to clean up.

[@davidhoover2446]

@@joentell great video BTW. I hadn't said that, but I meant to.

[@davidhoover2446]

@@joentell the BMR's are probably the best overall band for the buck. I just built using the 3" ones. They only go to 150Hz, but they get so loud, I learned I need to upgrade from 1/2 to 3/4 MDF. I really like the drivers for general listening and cheap price! They have a great musical character and dynamics I never thought possible at this price.

[@allansoria3478]

How would those BMR sound in a vertical array with 4 spkrs per side, that will be cool.

[@joentell]

I saw on the product page for these at Parts Express, it looks like someone did just that. I bet it would sound pretty good. Multiple drivers is a good idea because these have a low sensitivity. Link in the description.

[@allansoria3478]

@@joentell Also , I think it needs beefier power to give it's best being low senstivity. Sadly, these are not available in Pinas. It will be a lovely project for me.

[@joentell]

@@allansoria3478 You're right about giving it more power. Sorry they aren't available there in PI pare.

[@THDPodcast]

Cool - hit up dB for audio tech Joe!

[@DeityMicrophones]

What song is that at 4:50 that you are playing? That sounds like a great song to test headphones.

[@joentell]

Jabberheads - Elaine

[@THDPodcast]

Good Stuff!

[@deanhalleck5738]

--- Hello , , , HELP PEASE - At 3:42 into the Video you show a BMR 8 Driver Line Array , and I have looked everywhere trying to Find it - But I can't , Can you PLEASE tell me where to find it I Really would like to know more and maybe build it - !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! - - Thank You , Dean

[@davidperry4013]

I plan on building some 3d printed better than Bose pc speakers with tectronic bmr drivers and peerless passive radiators that lights up.

[@joentell]

Just make sure the enclosure is large enough

[@taylorv817]

is that cubic feet for that enclosure around .2 ft3?

[@genehunter94]

Just curious. Which do you think would sound better, these or the dayton audio ps95-8? Both paired with a woofer.

[@joentell]

I have tried those Daytons

[@sudarshanmaharaj]

I want to build a system using these drivers. Whats the smallest box I could use and still get decent bass. ? Can these speakers be used with a passive radiator?

[@joentell]

Not sure. It's been a while since I played with the enclosure for those. Lots of info at Parts Express though.

[@JazzinBlues]

Wall resonance?

[@joentell]

The wall does affect the sound, but I'm using it as an extended baffle and to enhance the bass response. These tiny 3.5" drives need all the help they can get especially because the way I've tuned the enclosure. They have padding on the back so they don't resonate ON the wall because of the contact.

[@MickeyMishra]

It took me 3 years to watch this video? LAME! Should have done this years ago. These drivers seem to be the perfect ticket for car audio when you have to use them off axis it seems. Ordered the 2 inch version to try out and see how that will work in my front stage. After these? Its just going to be some PRO audio drivers if they don't meet my output requirements. One day? I'm going to go to a SPL show with a Meet Joe Black CD, and a thumb drive of test tracks and see what they can really do with orchestral pieces and kettle drums. being that I'm a musician, I have some pretty stringent requirements for reproduction , especially my own vehicle. I'm hoping that these Tectonic drivers are part of the puzzle. If not these? Time for some JBL Horns in the dash. :-)

[@BobBob-tt3fe]

Why would you dislike this lol,

[@joentell]

There's always someone Bob. 🤣

[@BobBob-tt3fe]

Joe N Tell so true to be honest lol

[@realroijulien6243]

Song at 8:23 ?

[@Chorca]

Lapalux - Without You

[@DrGeta666]

Why would you put this as a premier event? Just put the video out. Do you really think people are waiting for a live release date? This isnt a live event.

[@joentell]

Just trying the feature out to see how it works. They just released it so I am curious. I figure, it doesn't hurt anyone. I usually schedule my video releases anyway. Only difference seems to be that this will have a live chat feature. Any chance I get to interact with viewers, I am happy to do so.