Questions and comments for DIY audio designs. Wed, 15 Apr 2026 09:26:49 +0000 Wed, 15 Apr 2026 09:26:49 +0000 HiFiCircuit http://www.hificircuit.com/community/forums/diy-speakers-and-subwoofers.13/ Mon, 16 Mar 2026 23:16:42 +0000 http://www.hificircuit.com/community/threads/ht-12-vs-fusion-15-in-a-larger-enclosure.5735/ http://www.hificircuit.com/community/threads/ht-12-vs-fusion-15-in-a-larger-enclosure.5735/ invalid@example.com (Ceedubbya) Ceedubbya
HT-12 vs Fusion 15 in a larger enclosure]]> 5 Sat, 10 Jan 2026 10:55:57 +0000 http://www.hificircuit.com/community/threads/project-nexus-a-timbre-matched-family-of-hi-fi-ht-speakers.319/ http://www.hificircuit.com/community/threads/project-nexus-a-timbre-matched-family-of-hi-fi-ht-speakers.319/ invalid@example.com (Matt Grant) Matt Grant
These designs came about from my interest in building a conventional 3-way design (which there seem to be a lack of kits for) and one which would allow for an ideal horizontal center channel use. I wanted to use drivers that would offer very good performance yet keep the cost of the design in reach of those looking not looking to spend an arm and a leg. I also wanted the...

Project NEXUS... A timbre matched family of Hi-Fi/HT speakers]]> 293 Thu, 08 Jan 2026 06:58:30 +0000 http://www.hificircuit.com/community/threads/vbs-315-a-15-3-way-diy-speaker-design-with-vintage-inspiration.5528/ http://www.hificircuit.com/community/threads/vbs-315-a-15-3-way-diy-speaker-design-with-vintage-inspiration.5528/ invalid@example.com (Matt Grant) Matt Grant pair for less then $200!

Expanding the value buster series beyond just the VBSS subwoofer this design started on a whim when I looked at how inexpensive could I make a decent DIY speaker design using a 15" woofer. Once I started adding up the costs based on this concept and noticed it came in lower then I had expected I knew I had to buy the parts and actually build these speakers.


Forming the foundation of this design will be the GRS 15PF-8 Woofer....

VBS-315 - A 15" 3-way DIY Speaker Design with Vintage Inspiration.]]> 12 Sun, 28 Sep 2025 04:33:17 +0000 http://www.hificircuit.com/community/threads/argos-tm-and-mtm-bookshlf-speaker-design-thread.5640/ http://www.hificircuit.com/community/threads/argos-tm-and-mtm-bookshlf-speaker-design-thread.5640/ invalid@example.com (Matt Grant) Matt Grant
I actually purchased a pair of each driver over a year ago to start working on the design but only got around to it just recently....

Argos - TM and MTM bookshlf speaker design thread]]> 26 Tue, 09 Sep 2025 02:01:32 +0000 http://www.hificircuit.com/community/threads/i-want-to-make-a-12-subwoofer-but-want-to-buy-a-subwoofer-plate.5968/ http://www.hificircuit.com/community/threads/i-want-to-make-a-12-subwoofer-but-want-to-buy-a-subwoofer-plate.5968/ invalid@example.com (PashkaTLT) PashkaTLT
Does anyone know where I can find design for a 12" subwoofer (either ported or sealed) where I'd be able to buy a subwoofer plate? I don't want to deal with electrical work myself. I just want to make a box, and install the components there.

Ideally, I want something like this Bassic-10 subwoofer from mtg-designs. Unfortunately, that design is for a 10" subwoofer.

Kind regards,
Pavel]]> 1 Fri, 29 Aug 2025 12:41:23 +0000 http://www.hificircuit.com/community/threads/the-alti-a-diy-2-way-bookshelf-speaker-design.773/ http://www.hificircuit.com/community/threads/the-alti-a-diy-2-way-bookshelf-speaker-design.773/ invalid@example.com (Matt Grant) Matt Grant
The AlTi, a DIY 2-way bookshelf speaker design.]]> 30 Mon, 08 Jul 2024 21:23:13 +0000 http://www.hificircuit.com/community/threads/big-mal-crossover-question.3695/ http://www.hificircuit.com/community/threads/big-mal-crossover-question.3695/ invalid@example.com (GWZ) GWZ Anyway my question centers around the 150 microfarad cap. I’m starting to lay out...

Big Mal crossover question]]> 3 Mon, 08 Jul 2024 21:21:04 +0000 http://www.hificircuit.com/community/threads/5-5-inch-anarchy-woofer.4756/ http://www.hificircuit.com/community/threads/5-5-inch-anarchy-woofer.4756/ invalid@example.com (NWCgrad) NWCgrad
On the website their isn't info on their size and T/S parameters. Are they available?]]> 7 Tue, 02 Jul 2024 07:41:59 +0000 http://www.hificircuit.com/community/threads/transform-your-body-10-essential-keys-to-successful-weight-loss.5956/ http://www.hificircuit.com/community/threads/transform-your-body-10-essential-keys-to-successful-weight-loss.5956/ invalid@example.com (Sharon Garrett) Sharon Garrett
Transform Your Body: 10 Essential Keys to Successful Weight Loss]]> Fri, 01 Dec 2023 19:27:36 +0000 http://www.hificircuit.com/community/threads/vbs-6-2-for-atmos.5915/ http://www.hificircuit.com/community/threads/vbs-6-2-for-atmos.5915/ invalid@example.com (GoAndy) GoAndy
VBS-6.2 for Atmos?]]> 5 Sat, 18 Feb 2023 19:16:00 +0000 http://www.hificircuit.com/community/threads/are-1099s-etc-dead-in-the-water-now.5939/ http://www.hificircuit.com/community/threads/are-1099s-etc-dead-in-the-water-now.5939/ invalid@example.com (Woodfiend) Woodfiend
Or anything out there that is comparable? Most of the other home theater or AV forums have slowly withered and the builds have slowed (besides maybe AVS) . I remember watching these as they were introduced but I didn't order at the time because we were moving. I really wanted a trio at least for...

Are 1099's etc dead in the water now?]]> 4 Thu, 29 Dec 2022 17:35:05 +0000 http://www.hificircuit.com/community/threads/my-theater-tour-featuring-diysg.5933/ http://www.hificircuit.com/community/threads/my-theater-tour-featuring-diysg.5933/ invalid@example.com (John Vargo) John Vargo

• DIYSG Fusion 12 LCR
• VBSS x 4
• Volt 10 ATMOS front height
• Volt 10 rear

]]> Tue, 13 Dec 2022 04:01:19 +0000 http://www.hificircuit.com/community/threads/port-lengths-for-htm-12-ht-12.5796/ http://www.hificircuit.com/community/threads/port-lengths-for-htm-12-ht-12.5796/ invalid@example.com (Bjlled) Bjlled I found this:

HTM-12 - 3" (tuning ~45hz) *On new 2020 design use ports at full length without cutting. How long is “full” length??

Also, Could someone tell me the port length for the HT-12? I found the HT-10, but not 12.

thanks!]]> 3 Fri, 25 Nov 2022 23:38:21 +0000 http://www.hificircuit.com/community/threads/jbl-subwoofer-project.5916/ http://www.hificircuit.com/community/threads/jbl-subwoofer-project.5916/ invalid@example.com (m4bgringo) m4bgringo I am building two enclosures which will house two drivers each.
I needed some bass to go along with the Volt-10's I just hung on my shop walls. Not looking for anything killer, curious as to how these will work, especially where they will be mounted, very high up on a wall between the Volt-10's.

...

JBL Subwoofer Project]]> 3 Mon, 08 Aug 2022 22:10:23 +0000 http://www.hificircuit.com/community/threads/diysg-fusion-12-tempest-crossover-request.5920/ http://www.hificircuit.com/community/threads/diysg-fusion-12-tempest-crossover-request.5920/ invalid@example.com (StevenZ) StevenZ
Thanks,
Steven Z.]]> Sat, 05 Mar 2022 01:11:15 +0000 http://www.hificircuit.com/community/threads/stereo-integrity-ht-18v1-in-the-ported-cube.5907/ http://www.hificircuit.com/community/threads/stereo-integrity-ht-18v1-in-the-ported-cube.5907/ invalid@example.com (Chris Collalto) Chris Collalto
Stereo Integrity HT-18v1 in the ported cube?]]> Sun, 19 Dec 2021 04:37:17 +0000 http://www.hificircuit.com/community/threads/diysg-1299.5878/ http://www.hificircuit.com/community/threads/diysg-1299.5878/ invalid@example.com (Neil) Neil @Erich H sold my kit to me and @Matt Grant did my crossovers which turned out awesome.

So, I threw around the idea of ported vs sealed and in the end, I figured ported was the way to go. I had the wood cut and ready to go for all speakers.

The towers will all be 45 tall x 16 deep x 14.75 wide (width of the baffle). The tune will be roughly 45hz with a 2...

DIYSG 1299]]> 10 Thu, 16 Dec 2021 20:44:59 +0000 http://www.hificircuit.com/community/threads/diying-an-inexpensive-modular-2-to-8-channel-dsp-plate-amplifier.5901/ http://www.hificircuit.com/community/threads/diying-an-inexpensive-modular-2-to-8-channel-dsp-plate-amplifier.5901/ invalid@example.com (Matt Grant) Matt Grant
This is based around the Sure/Dayton TPA3116 amplifier boards with DSP which use the very capable but otherwise underutilized Texas Instruments adau1701 DSP chip. Those boards natively...

DIY'ing an inexpensive modular 2 to 8 channel DSP plate amplifier.]]> 1 Thu, 04 Nov 2021 10:36:25 +0000 http://www.hificircuit.com/community/threads/a-few-my-diy-projects.654/ http://www.hificircuit.com/community/threads/a-few-my-diy-projects.654/ invalid@example.com (Jororaitchev) Jororaitchev A model of my DIY loudspeakers i have served Ti6k- JBL. My first contact with
them, was in distant 2005.
I started working with them in 2009 and finished in 2012.
The loudspeakers are "SEAS"- Excel / Tw-1”, Mw-5”for center 2х 5.5”,Bass-8,5”/ and cross-over parts- "Intertechnik".

Nominal impedance- 8 OhFreguency Range 30Hz-20kHzCharacterstic Sensitivity(2,83V/1m)- 87db
Long Term-110W.
Have are some pictures, if there is interest, i will continue.
Regards!
Joro
...

A few my DIY projects]]> 20 Sun, 24 Oct 2021 17:08:05 +0000 http://www.hificircuit.com/community/threads/horn-driven-center-channel-advice.5868/ http://www.hificircuit.com/community/threads/horn-driven-center-channel-advice.5868/ invalid@example.com (Daniel R Jackson) Daniel R Jackson But, the world being what it is...

I'm setting up a modest home theater around a few existing pieces.

I have a pair of Klipsch Tangent 5000 mains. (Similar to the Forte; three-way with Klipsch heritage CD-horn designs in M/T with 12" woofer and a...

Horn-driven center channel advice]]> 1 Sat, 09 Oct 2021 20:45:42 +0000 http://www.hificircuit.com/community/threads/amp-for-titans-818-l-c-r.5863/ http://www.hificircuit.com/community/threads/amp-for-titans-818-l-c-r.5863/ invalid@example.com (K Stempel) K Stempel 2 Tue, 14 Sep 2021 18:22:30 +0000 http://www.hificircuit.com/community/threads/volt-8-atmos-ceiling-mount-options.5806/ http://www.hificircuit.com/community/threads/volt-8-atmos-ceiling-mount-options.5806/ invalid@example.com (adamsmith) adamsmith
Ceiling is 8ft so looking at relatively flat mounting. Best idea I have for now is using essentially swing hangers on both the speaker and ceiling and a through bolt to connect them.]]> 1 Thu, 02 Sep 2021 17:55:25 +0000 http://www.hificircuit.com/community/threads/question-for-adding-more-subs-to-my-living-room.5818/ http://www.hificircuit.com/community/threads/question-for-adding-more-subs-to-my-living-room.5818/ invalid@example.com (Eli H.) Eli H.
question for adding more subs to my living room]]> 1 Tue, 01 Jun 2021 00:39:31 +0000 http://www.hificircuit.com/community/threads/the-flex-12-expandable-adjustable-subwoofer-mid-bass-design-using-the-mbm-12-kit.5746/ http://www.hificircuit.com/community/threads/the-flex-12-expandable-adjustable-subwoofer-mid-bass-design-using-the-mbm-12-kit.5746/ invalid@example.com (Matt Grant) Matt Grant
Using the MBM-12 kit as a subwoofer / mid bass with adjustable tuning (17hz, 24hz, or 34hz) in an easy to build 3cuft enclosure (14.5"w x 28"h x 18.75"d). Designed for use with the iNuke 1000DSP or 3000DSP with downloadable iNuke DSP settings for each tuning mode for optimal output and sound quality....

The Flex-12, expandable, adjustable subwoofer/mid bass design using the MBM-12 kit]]> 4 Mon, 01 Mar 2021 00:19:13 +0000 http://www.hificircuit.com/community/threads/1099-crossover-board.5797/ http://www.hificircuit.com/community/threads/1099-crossover-board.5797/ invalid@example.com (Jason Burchill) Jason Burchill
thanks]]> 5