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Old 27th July 2004, 08:53 PM   #1
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Default Salvaging old subwoofers

I have a very old pair of aiwa speakers that came with a mini hifi i had. The bass from these speakers were very remarkable and i wish to take the subwoofers out and build a enclouser for them, the problem i have is that i can gain access to the driver but the speaker wire trails all the way from the cone through the box itself and then to where i would usally plug them in, i dont no if i can just take the wire off or not because it is soldered on to the speaker itself so does anyone have any ideas as to how i can get them out?

Also if i can get them out, how would i go about finding or measuring the ts parameters for the drivers?

Greg
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Old 27th July 2004, 10:24 PM   #2
Bose(o) is offline Bose(o)  Canada
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Snip the wire, search on the forum or internet about measuring T/S parameters.
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Old 27th July 2004, 11:08 PM   #3
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oops.
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Old 28th July 2004, 02:22 PM   #4
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Thanks for that info. I now have the drivers of the box but i have been reading about getting the t/s parameters and it all seems very confusing and expensive so i might just chuck them in a box and see what happens.

Greg
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Old 28th July 2004, 02:35 PM   #5
Beggar is offline Beggar  United Kingdom
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Default What have u been reading?? :P

Expensive! Measuring the TS parameters shouldnt be described as expensive

Look at this http://www.diysubwoofers.org/measure.htm Now this is a method i use, however i substitute the words "audio frequency generator" with "demo version of cool edit" or "some free PC soundcard based sine generator".

Also where it says about constant voltage from the signal generator, ignore that and just adjust the volume at each frequency to give yourself pseudo constant voltage.

Hope thats helpful?

Nik
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Old 28th July 2004, 05:02 PM   #6
Bose(o) is offline Bose(o)  Canada
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It is very cheap and I've done it recently with some Tesla drivers out of an old Toshiba. Just for fun I will build them in Bose 201-like boxes.
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Old 28th July 2004, 09:39 PM   #7
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So when it says u need an amp does that mean i can use my sharp hi-fi as the amp?

Greg
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Old 28th July 2004, 10:17 PM   #8
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Bose(o) when u used the drivers out of the toshiba did it give you good results because im using aiwa branded drivers and it might not be that good, when the drivers were in there original box it provied a nice sounding deep bass that i wish to enhance by putting them in larger ported boxes.

Greg
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Old 30th July 2004, 06:24 PM   #9
Bose(o) is offline Bose(o)  Canada
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Actually no, the results were poor... efficiency was LOW (probably because the magnets were soo old) and they wanted a fairly large enclosure...about 60L for a maximally flat response. I'm pretty sure if you searched Tesla you would find my results.
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Old 30th July 2004, 06:28 PM   #10
Bose(o) is offline Bose(o)  Canada
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Yes, any amplifier will do...You are supposed to use an amplifier with a "flat" response...same voltage for every frequency from at least 20Hz-20khz. Though, anything has worked for me so far.
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