Simple Mid-top SMT212

So. Just out of curiosity, the original woofer used in these was the sn12mb correct? Ive found that the lavoce waf123.01 has almost identical specs as the pa audio and models almost the same. Can anyone confirm these will work before i pull the trigger on 8 of them?

The B&C DE250 is a good choice: speakerprojects.wordpress.com/2017/08/29...-various-waveguides/

Here's a pic of a couple of the finished cabs. 

Does anyone have a proper comp horn recommendation when using the 12pe32's? Also neo drivers comparable to the 12pe32?

Aye I thought so. Cheers.

As a rule of thumb, wadding the rear chamber of a top is always a good idea.

No ones posted on this plan for a while so thought I would. Just built a pair of single driver versions of the SMT. Just wondering if people put any wadding in the chamber? Also, I made up a cutting list for 18mm ply. If that would be useful for anyone I can get it posted. I'll post some pictures of my build once the paints dry!

If you would cross the SMT212 somewhere between 100 and 200 Hz, the 12p80nd would have it's benefits. The 12MI100 is simply not made to be used below 200 - 250 Hz but as you say it's going to start there anyway. It's the little things like the aluminium VC and the 2nd and 3th HD, that makes me think the 12MI100 is the easiest choice here. If you ever intent to cross below 200 Hz, ever, the 12p80nd.

Best regards

Hi I am planing on building a pair of these SMT 212.
The thing is that I can´t decide between Beyma 12mi100 or 12p80nd for the midrange drivers.
Is the 12p80nd worth the extra money? How big an advantage dos the 12p80nd have over the 12mi100
- when it comes to sound quality?
- when it comes to max SPL?

Also, will 2 12p80nd working together corse less phase problems than 2 12mi100 working together?

I am planing to use the SMT´s from about 200-250 HZ and up.

:ohmy: these things are intense! Great Design

Coming along real nice like. gonna have 4 of these bad boys.

Hi All...I'm building 2 of the SMT 212 but in a single 12" driver version.

At the moment I am designing the plan to cut all the panels

I was wondering if the the 12" driver and the comp driver should be vertically aligned or if a configuration like the attached sketch is fine ( where dark blue 12" driver sits at the back part of the cabinet and the purple comp driver + horn sits a bit forward - drivers are not aligned in this case )
sketch is based on the measures of 18sound 12mb700 12" mid bass driver and Compression P Audio BM-D750 Serie 2 with Horn P Audio PH-3223
This will determine the width/position of the horn baffle.
From other build I've seen on the web it seems that they are not vertically aligned but before I cut the wood I wanted to make sure I am not making any mistake

thank you for any advice !

Nice looking

I have built 1 of these so far with a single 12 beyma sm112n a beyma 605nd(6.5") and beyma CD10Fe. I have the drivers to build 3 more although I need to get the three other 605nd's reconed. Will post build pics when I find them or take more when I build the next one

Hi there. My take on the smt212 with a panel between the 12" drivers. Loaded with 18sound 12nd710 and bms 4550

Hey guys I'm purchasing wood for 4 Smt 212's how many sheets of ply do I need?

Hello Everyone,

Does anyone know the maximum frequency response of the 12" section as a single? I was hoping to use them from 200-1.4khz

Thanks

I need soft copy design bass reflector 15" woofer... anybody help

I need plans for a single 12" cabinet.

Hi Everyone,

just wondering would this design work well with any 12" fane drivers

i.e 12mbn and 12bmn?

Many Thanks

Ollie

I have the PDN12MH25's in SMT212's and they are amazing with 2" Fane CD280's and when I used 2 of them at a marquee event last year the Police had a report from someone complaining about noise pollution nearly 7 miles away. I honestly did not believe the officer when he approached us at the end of the night? I laughed it off as a joke. He could not believe it either until he had stood in the persons garden and he could hear it for himself. I have 4 SMT's and I would highly recommend everyone to try them.

www.precision-devices.com/Product-Details/PDN12MH25 , :blush: sorry guys ihad the wrong model number of the 12" drivers originally. My bad. oops! :blush:

should i use the PD12SB30 or the PD 123ER?

any news on this? I am looking to build them as a single driver unit, however has anyone built them to take a top hat for poll mounting them?

what drivers are best?

Gareth

Can you explain the nature of the phasing problem please?

Hi guys. I am building the full size SMT212. I was wondering about the size of the panel, labeled "H". Would that be sufficient enough to block the phasing problem, between the two twelve inch mids