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
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.
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.
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!