Need help on this old school sub

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Does anybody know the ts parameter on this GS Redline 10" sub. I would like to use it for the house, but I don't have any info on it. Also if you have any experience with it, LMK. Here's some pictures of it.

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.


An externally hosted image should be here but it was not working when we last tested it.
 
Hi,
just by looking at the pics it seems as though it's worth investigating.
It has a vented pole piece, large magnet, alloy basket. These usually add up to a not cheap price.
Try measuring the Thiel Small parameters yourself.
regards Andrew T.
 
Hi,
the only extra equipment you need are an oscillator, multimeter, and a couple of resistors and a website to talk you through the testing procedure.
Try to find an oscillator secondhand it must cover 5Hz to 200Hz to do the low freq tests. some clever software can use the computer to generate the test signals.
regards Andrew T.
 
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