FET Audio | Hi-End Audio & Electronics DIY Electronics & Repair

October 14, 2016

ProAc speaker repair

Filed under: Speaker — Spencer @ 11:18 pm

You can see from the photo the tweeter has damaged foam but it does not affect the function!  The the bass unit, the coil is open circuit and all 4 units (brought two more spare) are due to the corroded connection at the flex wire to the paper cone.  Thus this is not internal open circuit and thus I try to reconnect them using a wire as shown.  After repair, the driver can be used without any issue!

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JBL 4642A + Crown DSi 4000 tear down photos

Filed under: Pro Audio — Spencer @ 11:03 pm

Got these all at very good price back in March 2016!  The amp and the subwoofer is used in one of a 70 seat cinema locally by government for film screening.  All equipment are on auction due to relocation.  Hope to hear more!

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JBL 8340A tear down

Filed under: Pro Audio — Spencer @ 10:53 pm

Got 4 of these real cheap!

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Crown CT8150 tear down photos

Filed under: Pro Audio — Spencer @ 10:44 pm

Got this B-stock only US$400 cheap from Harman on-line shop.  Sound great for this amp!  125W x 8 channels.  Good for 7.1, bi-amp, tri-amp use for home theatre or home audio etc…

No fan and this is really high tech!  1000W for a 1U box!  This amp is good for studio use for quiet operation.  Only issue is that it has no network connection and cannot bridge the output channels.

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BSS Blu-160 tear down photos

Filed under: Pro Audio — Spencer @ 10:35 pm

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