SA WM40 Box Replacement

kctess5 · 10th January 2012, 10:01 PM

I've come across a pretty good deal on a Sony SA WM40 and after reading some reviews about its boominess issues I was wondering if I designed and built my own box for it with proper volume tuning stuffing etc if i could greatly improve its performance or if its issues are inherent of the cone and amp.

Thanks all

revboden · 10th January 2012, 11:54 PM

Do you have a way to test the TS parameters of the driver?

If so then you could model the driver-box system to see if it is optimized by comparing it to the current box volume, tuning, etc.

kctess5 · 11th January 2012, 12:14 AM

No sorry

I wish haha. I looked everywhere for a frequency response graph but couldn't find one. I'll keep looking for the TS stuff though

I actually haven't gotten it yet even if I did though, I'm (if all goes according to plan) getting it tonight.

What do you think the cheapest passable testing system (for frequency response) I could use would be? I've got a multimeter I could break out for DC resistance but thats pretty much all I could do in that respect

kctess5 · 11th January 2012, 06:28 AM

Just got the sub. I haven't had the chance to do any hard core testing yet but I'll post some more info on it soon

revboden · 11th January 2012, 10:45 PM

For testing frequency response on the cheap I like REW5 or TrueRTA. If you have a radio shack SPL meter and a male RCA to male mono mini adaptor to hook it to your computer you will have a pretty good idea of what is going on with either of those programs.

With the rad shack meter remember to look up the compensation charts.

kctess5 · 12th January 2012, 02:00 AM

Ok ill do that when I have a chance. I already use that cable (except stereo) for music off my mac

10th January 2012, 10:01 PM	#1
kctess5 diyAudio Member Join Date: Dec 2011 Location: California	SA WM40 Box Replacement I've come across a pretty good deal on a Sony SA WM40 and after reading some reviews about its boominess issues I was wondering if I designed and built my own box for it with proper volume tuning stuffing etc if i could greatly improve its performance or if its issues are inherent of the cone and amp. Thanks all

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10th January 2012, 11:54 PM	#2
revboden diyAudio Member Join Date: Feb 2011	Do you have a way to test the TS parameters of the driver? If so then you could model the driver-box system to see if it is optimized by comparing it to the current box volume, tuning, etc.

11th January 2012, 12:14 AM	#3
kctess5 diyAudio Member Join Date: Dec 2011 Location: California	No sorry I wish haha. I looked everywhere for a frequency response graph but couldn't find one. I'll keep looking for the TS stuff though I actually haven't gotten it yet even if I did though, I'm (if all goes according to plan) getting it tonight. What do you think the cheapest passable testing system (for frequency response) I could use would be? I've got a multimeter I could break out for DC resistance but thats pretty much all I could do in that respect

11th January 2012, 06:28 AM	#4
kctess5 diyAudio Member Join Date: Dec 2011 Location: California	Just got the sub. I haven't had the chance to do any hard core testing yet but I'll post some more info on it soon

11th January 2012, 10:45 PM	#5
revboden diyAudio Member Join Date: Feb 2011	For testing frequency response on the cheap I like REW5 or TrueRTA. If you have a radio shack SPL meter and a male RCA to male mono mini adaptor to hook it to your computer you will have a pretty good idea of what is going on with either of those programs. With the rad shack meter remember to look up the compensation charts.

12th January 2012, 02:00 AM	#6
kctess5 diyAudio Member Join Date: Dec 2011 Location: California	Ok ill do that when I have a chance. I already use that cable (except stereo) for music off my mac