Not looking for massive spl, just something solid at 40ish hz and more importantly - a box I can tuck away into a corner.

Thanks!

This should fit your bill. It's a good sounding driver. Maybe not as good as BMS, but still good.

I don’t have a massive amount of amp power on hand (500w @4ohm) so won’t really do the big boy drivers justice, in small boxes they need a lot of power…

Still tempted by the Tony Wilkes Q12 with BMS, it’s so compact 

KWB75 wrote: Looking to build a compact 12 inch bass/sub for house parties, is the BMS 12 still the king of compact reflex builds?

Think I'd be leaving a house party early, if the sub was provided by a single 12" reflex.. 

For me the, absolute minimum single cabinet solution for a house party, would be something similar to a B&C 1x18, loaded with PD186 (Mk1), or better.

This cab works with so many 18" drivers unmodified, but guess would be even better with full 200L internal chamber.

But it's not all of us who wants to shoot birds with Cruise missiles.

Speakers are always indoors, so with some corner loading a 12 inch bass will definitely do the job.

I've done a house party with a single 15" reflex and bridged 1k amp behind it. It was a Klipsch KI-115, which used something made by Eminence. Probably similar to a Kappa Pro 15LF, but it had a bigger magnet. It was rated at 400w RMS and it had all the bass the house needed!

Also birds..

Some of us "older" Reggae dudes, had pair of Realistic Mach IIs, ADC Soundshaper Eq's, and Technic Class A Amps in our bedrooms as teenagers, rattling the letterbox on the Front door, from our back bedrooms.

So the thought of a house party, with sub provided by 1x12" cab, is simply unthinkable.

Lucasdude wrote: Technics Class A? I've a feeling you might mean "New Class AA"!

Aye..

Has been almost 40x years !!!

For any who are either interested in what Technics called "New Class A" amplifiers, or are a bit bored...

https://audiokarma.org/forums/index.php?threads/technics-class-aa.699007/" rel="nofollow - https://audiokarma.org/forums/index.php?threads/technics-class-aa.699007/

Read Macphantoms excellent explanation above!

Anyways never not had enough bass for a house party. Including currently on a range of queer techno club nights happening in people's houses with about 150 guests.

I’m over 50, and despite my love of speakers (and bass), I’m a responsible homeowner these days - it’s all very sensible.

Maybe I should get a pair of Mach 2’s for the nostalgia 

Even better,  try pair of JBL M350, replace 15" with PD158.

Will need to slightly widen cutout, with disc grinder.

Power them with, Peavey GPS3400, or JBL MPX1200 or Crown MA3600VZ

Klark Teknik DN360 for Eq.

Mouth, dribbling.. Nuff said. 

Back to the more technical aspect. Assuming that a single cabinet solution can contain multiple drive units, the following plots show the maximum output from four different cabinets.

The bottom graph shows the single 12” in a 40 litre cabinet, with an output of approx 119dB down to 40Hz and a -3dB at about 35Hz.

Next graph up, with just over 3dB more output is the PD186 in the cabinet shown of 183 litres. Obviously bigger speaker, bigger, better, output, therefore much better party. But is an extra 3dB with a cabinet more than 4 times the size worth it?

If that extra few dB output of the single 18” is critical to get the party vibe going, but in a more compact cabinet, the next graph up shows the output from a 2 x 12” cabinet at 80 litres. So a couple of dB more than the 18” driver in a cabinet less than half the size.

If the visual impact of the larger cabinet is a must for party pleasure, the top graph is for a 4 x 12” cabinet of 160 litres. Still slightly physically smaller than the single 18” design, but with 8dB greater output at 40Hz you probably won’t be able to hear complaints from disgruntled attendees who were hoping for at least an 18” drive unit”

Pretty sure the q12 called for a big boost at tuning frequency,

According to an early thread, minimal eq needed.

https://forum.speakerplans.com/q12-12-sub_topic28555.html

Technics Class A? I've a feeling you might mean "New Class AA"!

If I remember correctly, this was a modified version of  A. M. Sandman’s class S (presumably S for Sandman) design. The circuit description was discussed in Wireless World back in mid 1970s and again in the early 80s. It is also mentioned in the book Audio Electronics by John Lindsey Hood. It is quite a while ago now, but I believe that amplifier quiescent current is automatically adjusted during the output cycle with the aim of keeping the output stages operating, effectively, in 'class A', but without the thermal dissipation penalty normally incurred by class A.

sr technology pocket 750 mx 12 " sub small monitors this is the baby system its been out nuff nuff times loud for it size lift whole system with one hand perfect for disco   if if playin diff type of music bigger systems comes out to play  

WOW… SR Technology… that’s brings back a few nightmares from about 20 years ago ... you must have been luckey and got a good one!!

I used to do the service work for a music store that sold SR, about 75% would be faulty out of the box, we concluded they didn’t have a QC department!! 
Example, we had a batch of the little 8” powered speakers (I can’t remember the model but JAM 150 rings a bell) they arrived with the hole in the plate amp being too large for the push fit IEC socket so if you pushed the connector in hard the socket would disappear inside the case exposing the live terminals on the fuse holder and mains power switch. 
Another time we had a batch of powered 3-way speakers that would go unstable when warm with the bass cone oscillating at around 20hz, this would continue until the speaker shut down due to thermal protection, was either turned off or something died…. 

However, when working they sounded good, and with a little more production engineering and decent QC they could have been a very good product.

In the end the store stopped selling them.

HK impact has a 12 on bass was very good at a house party. Modern 12 designs can be super efficiency theses days. 

Winter project for me will be fane 18xb  in a b&c sub 18 and pair  of Martin aq8 on mid top. Will be good for a mini system. I doubt it will end up in a kitchen or house party. Might end as DJ monitors a couple of time lol.  

Each box is loaded with a pair of JBL2206 drivers (8 ohms) 

I'm looking for £1000 for them but they could do with some tidying up as these were instal boxes. The mid highs are not for sale 

Im based in south east London