r/DIYSpeakers

▲ 1 r/DIYSpeakers+1 crossposts

Overnight Sensations Problem: Opposite Tweeter and Woofer not working

Hello!

I just finished building a pair of Overnight Sensations and plugged them in for the first time and... the left woofer isn't working and the right tweeter isn't working. Now, I know that the answer is probably bad solder joints, but before I pull everything out and start testing the boards I just thought I'd ask the silly question, since the problem is so strangely symetrical: Is there a chance I just messed up the wiring between the outputs and the drivers? Seems really coincidental that I'd be getting one of each working but on opposite sides, doesn't it?

And sorry, I know there's not much detail in this post. I built these with my son and they're in his room for the night after the failed test, so I haven't started taking them apart yet.

Thank you!

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u/jollyllama — 2 days ago

3D Print - SB Acoustics Micro-C

3D printed (using PETG - 40% infill, and TPU 95A for gasket between baffle and box) the Micro-C enclosures on the Bambu X1C.

Since the X1C does not have a big enough bed to print in one piece, I used the Bambu Studio to split the body and baffle into two pieces and used epoxy to glue them together. Used bondo on the baffle to fill the glue line. Used contact cement to apply veneer.

Think the entire print took about 3 rolls of filament which is about 60 dollars or so. I think I could have built them with a single 2x4x8 foot piece of MDF that probably cost like 20. So not totally cost affective. However I will say finding 5/8 inch MDF around me (USA based) is about impossible, so the cabinet was built to exact spec that is in the micro-c documentation.

MIcro-C kit documentation Dont have the STL posted anywhere, but if anyone is interested will throw it up on one of the sites and link here.

These speakers image really well, and a surprising amount of bass for the little 4 inch drivers. Was a fun build.

u/floydian99 — 4 days ago
▲ 291 r/DIYSpeakers+1 crossposts

First project: Sealed subwoofers for my Dynaudio speakers

Hi all

This is my first speaker/subwoofer project and I'm excited about the end result! 😁, so this is just me showing of.

I've wanted to add 2 subs to improve the bottom end of my Dynaudio Contour S3.4's for a while, so it was time to do something about it.

Initially I wanted to get 2 SVS SB-2000 pro's. But I already have a big amplifier and a receiver for DSP (Denon x3800h), so I didn't need active subwoofers. I realized that I could get what I wanted for half the price by DIY. A good opportunity for a nice project where a lot of my power tools came to good use.

The goal for the project was simple, build 2 subwoofers for music, which hopefully will be at least as good as a pair of SVS-2000 pros.

I've used a pair of scanspeak revelator 32w units for the project (32w/4878t00).

The cabinets are built with 19mm MDF, double MDF front baffle, with an additional 9mm MDF plate to create a rounded countersink hole for the units. So, a 47mm thick front baffle.

I've been creative with the bracing where I used the 9mm MDF I had. I made a "cross" to support the center of the walls, it also saved a bit space compared to window bracing.

To add weight and resonance damping, I mounted some bitumen plates on the walls as well (3kg extra weight). And then around 450g of polyfill for damping.

This results in 2x18kg heavy cabinets with a volume of 54l, and a Qtc around 0,7.

I'm still waiting for the second driver to be delivered, but so far the first subwoofer is running. It integrates and sounds very well! It could be fun to compare them with the SVS's subwoofers one day.

I like the white satin color, so I might also send my Dynaudios to the painter one day.

u/9colai88 — 8 days ago
▲ 1.1k r/DIYSpeakers+2 crossposts

My projects over the past 2 decades

Thought this sub would appreciate it

  1. Jeff Bagby Helios
  2. An attempt at Curt Campbell's Uluwatu with SB15NRX
  3. Altec 604E into a 5fu ft pro audio cabinet
  4. Jeff Bagby Revolution
  5. Mad 3 way diy for inlaws using JBL M2, 2435HPL be compression driver, Acoustic Elegance TD15M-8Apollo and SBP12-8Apollo (B&W 684 for scale)
  6. 2 way version of 5
  7. Curt Campbell's Uluwatu proper, these had the fastest thumpest mid bass ever! Sadly lacked refinement
  8. Open baffle with Coral Flat 6 & Acoustic Elegance Dipole15
  9. SB Kalasan satori bookshelf on top of a TQWP for AudioTechnology 12"
  10. Vertical laminated boathull design for Scanspeak 990000 & 15W8530K00
  11. John K's Nao Note II
  12. Zaph's Waveguide TMM 2.5 way (and Linkwitz Pluto)
  13. SEOS15 w/ B&C DE250 and Acoustic Elegance TD15M using the xsim author's design
  14. SB Kalasan again on top of a nice cherry cabinet with two Acoustic TD10M-8Apollo
  15. Beyma TPL150H with Acoustic Elegance TD6M open baffle matched the 14's woofer modules
  16. Troels Gravasen's Jenzen Seas ER for in laws
  17. My own pair of Jenzen Seas ER
  18. Curt Campbell/Jim Holtz's Statements
u/New_Cook_7797 — 12 days ago

Gift to electrician/handyman

I know an audiophile yacht electrician on a professional level and need to make him a gift. I need direction on what is a proper starter kit that he can easily make a speaker on his own.

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u/7uckingJack — 7 days ago
▲ 6 r/DIYSpeakers+3 crossposts

I want to make a bass amp, what type of speakers would be good?

Im planning on making a cigar box portable bass amp and i was wondering what small speakers would be good for this use and any other components or tips would also be helpful too please.

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u/Wolf_Creates09 — 12 days ago
▲ 6 r/DIYSpeakers+2 crossposts

Help me with my first DIY project

Hi everyone! im new to this world and i wanted to start my first diy build for a bluetooth speaker. could you give me some tips? I started by choosing a USB-C 12,6v charging module wich i would then connect to a 12v Bms for my three 3,7 18650 lithium batteries.
from the Bms it would then go to a switch, then to a voltmeter to indicate battery percentage, then to a boost converter 12-24v (wich it has been suggested me by ai so im a little skeptical about this part) the to my amplifier with built in bluetooth module wich is the ZK-MT21 with three channels. two 50w for my two Visaton FRS 7 4 ohm and a 100w subwoofer channel for my FaitalPRO 4FE32-4F. any suggestion on what to change? (pls be gentle with the comments, as i mentioned before i litteraly just started and made this build to try something out)

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u/Ok-Assumption7654 — 9 days ago

Here in Denmark we have a supposedly DIY speaker guru called Troels Graversen. I must say his entire house is filled with speakers and components. And he does have the experience. Bought a pair of bookshelves from him and they sounded amazing.

But in an article of his he mentions that one cannot simply calculate a crossover by just knowing case volume and ports and drivers. Because like he says you need some special listening equipment with a microphone because the front of the speaker as in distance from the different drivers and also the size of the front and so on.
Is this true or is this just for high end builders. I just assume normal people like me couldnt tell the difference.

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u/c0elbyte — 14 days ago

There are so many talented builders and engineers in this group I was wondering if any of you ever attempted to replicate their exquisite sound? They sold out years ago and the person that purchased it closed the doors a few years later.

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u/WillHuntingthe3rd — 15 days ago