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MarjanM View Drop Down
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Points: 7845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2025 at 6:48pm
Plenty of pictures on their FB page and on Sam personal page too.
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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fudge22 View Drop Down
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Points: 263 		Post Options Post Options   Thanks (0) Thanks(0)   Quote fudge22 Quote  Post ReplyReply Direct Link To This Post Posted: 06 September 2025 at 9:40pm
Quote Hover the cursor over the picture [Product Information] will appear, click
on that and you'll get a pic of the cabinet.

St the bottom of that pic will be 3 small circles, click on one of the smaller
circles and get a scroll option.



Thanks for the info, but the problem in this instance was with the browser, not the user.


Quote Speaking of driver cooling, I've noticed in the many videos that have surfaced of that massive UK Resonance system a few weeks back that all of the sub cabs have a star shaped metal item embedded into the woodwork right behind where I assume the driver is located. Ive never seen that before, and I'm wondering if its a cooling system that's connected to the back of the magnet somehow?


I can’ t comment on this particular design, but various attempts at passive cooling have surfaced over the years, with the promise of significant benefits, None have gained much traction or widespread adoption.
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Points: 35 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HumbleDeer Quote  Post ReplyReply Direct Link To This Post Posted: 26 September 2025 at 10:57pm
Originally posted by fudge22 fudge22 wrote:

Quote Their woodwork is exeptionally good.

Curious as to why there are only photos of the racks/cases on the web site, presumably no actual loudspeaker cabinets exist to photograph.


These are some boxes from errr, 6, 7 year ago? They were built by Joseph / PCH Audio. Pictures are mine. These products/boxes should be on the website under the legacy/discontinued items.






Edited by HumbleDeer - 26 September 2025 at 10:58pm
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BigSoundNorthWest View Drop Down
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Points: 335 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BigSoundNorthWest Quote  Post ReplyReply Direct Link To This Post Posted: 27 September 2025 at 3:38pm
I've seen some PCH boxes in the flesh.

Zam from UKPONICS Sound in Burnley runs four of Joe's scoops, as well as four kicks and mid tops
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Timebomb View Drop Down
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Points: 2763 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Timebomb Quote  Post ReplyReply Direct Link To This Post Posted: 28 September 2025 at 4:56pm
Joes woodwork is really good, hes built batches of Orbit 4s for me.

Not 100% sure on this Thermaflow thing but it seems like the rear chamber has a port that is deliberately tuned out of the usable passband so the port has little output but improves cooling compared to a standard small closed chamber.  I dont really know though.  
James Secker          facebook.com/soundgearuk
James@soundgear.co.uk               www.soundgear.co.uk
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snowflake View Drop Down
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Points: 3443 		Post Options Post Options   Thanks (1) Thanks(1)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 28 September 2025 at 8:08pm
Why Our ThermaFlow™ Horn Subs Are Better...
Vent the heat, not the tone.
ThermaFlow™ is our flush, aperiodic cooling manifold for front-loaded horn subs. It quietly exchanges air between the rear chamber and the horn path, so the motor runs cooler while the cabinet still behaves sealed-like in the 25–60 Hz band—no reflex “unloading,” no port talk, no change to your voicing.
What you get (vs. conventional horn subs)
Consistent SPL all night: typically 0.5–1.5 dB less thermal compression, so the mix you set at soundcheck is the mix you keep.
Cooler, safer drivers: real-world –10–30 °C lower voice-coil temperature at the same drive → longer component life and fewer failures.
Sealed-like control: transient punch without the reflex trough; Fc shift ~5–10% with lower Q (tighter, cleaner).
Silent airflow: large flush perforations + reticulated foam = zero vent talk and minimal turbulence near the mouth.
Tour-ready serviceability: through-bolted plates, standard reticulated PU foam, stainless hardware—fast to inspect and replace.
Why it beats reflex/hybrid “cooling ports”
No tuning trap: short ports + resistive foam = heavily damped; there’s no low-tuned resonance to unload the cone or smear group delay.
Low velocity by design: bigger effective area than the ports (≈ +34% in our reference build), so air moves freely without hiss.
Predictable deployment: same response, show to show; less EQ drift as temperatures rise.
Proof you can measure...
Impedance sweep: sealed vs ThermaFlow™ → no reflex second peak, broader/lower main peak, Fc drop ≤ 5–10%.
Thermal check: ΔR (hot–cold) shows ~28 °C typical coil temp reduction over a 10-min 25–60 Hz drive—exactly what reduces compression.
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