MMTMM

Jump to Latest
E

EliGuy

Member
Joined 2019
#1
So I've read quite a bit on here about using psuedo coaxial arrays to
help control directivity. Using delay with a DEQX Ive been toying with the

idea of making a mmtmm design. But my one preference is to use a 3/4" or smaller tweeter. WHy? Because I like the way they sound and contrary to
many people who say that they cant hear above 10khz I can tell the difference.


I used a peerless 0.5" one time over a 2 inch mid and I loved the way it sounded.


So here's my idea, Im looking for input if this would work and and tweaking ideas you all might have.


For the tweeter using the Wavecor TW013WA01 13 mm, flanked by two Morel MDM 55 followed by 2 RS125T*8 5" Reference Woofer Truncated woofers. With this configuration I can get a very tight grouping.



My crossovers would be around 1100hz and 3000hz. I can get the center to center spacing around 132mm and 322mm for the woofers!



What I'm looking for is really good imaging, nice resolute mids and highs. I dont need super deep bass or loud spl as I live in a condo. Again this would be a purely active setup ran off of a DEQX so no crossovers needed.



Thoughts???
 

Attachments

Last edited:
#3
You do not need the Morels, they are for much higher SPL than your tweeter , which will do only 104dB peak with a 100W amp.

The 5" will hardly go below 100Hz and fall off very steep: no bass
A passive radiator doesn't make additional bass, you also need a driver with lower Fs.
So my advice take a SW182BD02 in a 6L closed it will go to 60Hz with 200W amp.

Use the 5" from 300 to 3300 as midrange only 1 is needed 50W amp 1.5L closed
the tweeter with a small enclosure (cup) around because of pole opening and 100W amp.
 
Last edited:
#5
bansuri said:
You do not need the Morels, they are for much higher SPL than your tweeter , which will do only 104dB peak with a 100W amp.

The 5" will hardly go below 100Hz and fall off very steep: no bass
A passive radiator doesn't make additional bass, you also need a driver with lower Fs.
So my advice take a SW182BD02 in a 6L closed it will go to 60Hz with 200W amp.

Use the 5" from 300 to 3300 as midrange only 1 is needed 50W amp 1.5L closed
the tweeter with a small enclosure (cup) around because of pole opening and 100W amp.
Click to expand...




Ok interesting, so what should I use for a mid if Im using those woofers? I presume that those 7" woofers wont make it to a crossover point that the 13mm tweeeter could get to. Also the c2c distance would be increased.... I realize that theres an spl mismatch but again I dont require high spl, but I cant find a smaller mid to make the c2c distances work.


WhatIm really tring to do is create a relatively slim mmtmm using a 13mm tweeter. Perhaps this is impossible? I would settle for a 3/4" tweeter if you have any suggestions.
The reason for the mids is the increased resolution you get from the smaller moving mass. Also bringing a 7" upto >2500hz is too beamy for my taste. I want excellent dispersion.
 
Last edited:
#6
bansuri said:
You do not need the Morels, they are for much higher SPL than your tweeter , which will do only 104dB peak with a 100W amp.

The 5" will hardly go below 100Hz and fall off very steep: no bass
A passive radiator doesn't make additional bass, you also need a driver with lower Fs.
So my advice take a SW182BD02 in a 6L closed it will go to 60Hz with 200W amp.

Use the 5" from 300 to 3300 as midrange only 1 is needed 50W amp 1.5L closed
the tweeter with a small enclosure (cup) around because of pole opening and 100W amp.
Click to expand...


Also I noticed the upper limit to the 7" wavecor driver you suggested is only 500hz???
 
You must log in or register to reply here.
Top Bottom