Hi Dabbler,
You might find some of this to be of interest:
http://www.diyaudio.com/forums/multi-way/132884-10-mtm-neopro5i-ribbon-build-thread.html
I tested two of the drivers you're interested in, namely the TD10M and the 10NW64. The TD10M was a clear winner thanks to the poor cooling system on the 10NW64.
There are a bunch of measurements for both drivers spread throughout the thread.
Cheers,
Owen
You might find some of this to be of interest:
http://www.diyaudio.com/forums/multi-way/132884-10-mtm-neopro5i-ribbon-build-thread.html
I tested two of the drivers you're interested in, namely the TD10M and the 10NW64. The TD10M was a clear winner thanks to the poor cooling system on the 10NW64.
There are a bunch of measurements for both drivers spread throughout the thread.
Cheers,
Owen
Thanks Doug, apparently the TD12M does not have the breakup problem of the TD10M. The distortion graphs look nice over 80hz.
I was only planning to measure the frequency response then use DCX2496 to fiddle with the crossover point.
Distortion measurements? wouldn't even know where to start.
Im using B&C 10PS26 in a MLTL box. They sound wonderful. Very dynamic and "alive". Very high resolution. I like to cross them around 1,8 - 2,0 Khz.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
That is very cool, do you have a build thread or something to guide me through it. I have been looking for a 100dB sensitivity design from 40Hz to 400Hz and your MLTL box looks like it does that.
No I haven't seen off axis graphs for this driver. I was planning to measure myself - mic at 1m and spin the test cabinet around in 15 degree increments or thereabouts. Will that work?
The model is in 1/4 space so it's about 6dB high compared to most other modelling programs. The 10PS26 is a 95dB driver so an MLTL isn't going to increase sensitivity.
Drivers are on there way, have started plugging some numbers into bassbox.
121db@1m with 350W is good however second-last graph of cone displacement shows 5.5mm xmax breached at 57hz and rising fast.
Do I need a steep high pass filter on the woofer at 60 hz to protect it from low frequencies at high SPL? How far can xmax be exceded before damage?
121db@1m with 350W is good however second-last graph of cone displacement shows 5.5mm xmax breached at 57hz and rising fast.
Do I need a steep high pass filter on the woofer at 60 hz to protect it from low frequencies at high SPL? How far can xmax be exceded before damage?
No. I run active filters through my computer so i use whatever crossover-frequency i think sounds best. Im not that scientific about it.
They stand next to a wall, a little too close to the corners i my room so i think 1/4 space is right.
Running my MLTLs from a QSC PLX2402 i could not get the drivers to distort or sound bad with Yello and other electronic music. That is 425 watts to each driver and a lot of deep bas. I did not use any highpass-filtering. All the people left the room because the spl was ridiculous.
I dont use my speakers to play loud, but i wanted to test them. I built them to sound dynamic and "live".
Maybe there is less cone displacement using MLTL with the same SPL? Or am I misinterpreting the graph?
Not a lot of content below 40Hz is at 0dB so you get away with a little more than the sim shows.
I would however use a high pass as there is no guarantee that it won't cause a problem. I hate cones flapping in the wind.
MLTL won't give any magic excursion handling but it sure sounded nice when I listened to the above speakers.
I can't find a number for Xdamage on the 10ps26 but I guess they are pretty durable.
I would however use a high pass as there is no guarantee that it won't cause a problem. I hate cones flapping in the wind.
MLTL won't give any magic excursion handling but it sure sounded nice when I listened to the above speakers.
I can't find a number for Xdamage on the 10ps26 but I guess they are pretty durable.
Every ported system unloads below tuning and excursion increases dramatically without a filter.
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