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Kustom 300 Part - PLEASE HELP!! [message #8569]

Fri, 04 May 2007 11:47

chuckb123
Messages: 5
Registered: March 2007

Junior Member

Hey, folks. I desperately need a part to get the reverb workin on my Kustom 300 PA head. It's a 14 pin integrated circuit and the model number is SN16810N. Any advice and/or help is much appreciated. Thanks!

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Re: Kustom 300 Part - PLEASE HELP!! [message #8572 is a reply to message #8569]

Fri, 04 May 2007 13:22

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

Hi, Is this a plastic case IC, or a metal case IC? and this is the only info it has on its case?
I do not have a K300 schematic, but I would have thought that it would use the same semiconductors as the K250 for the reverb function, of which I have a schematic for and it does not use a 14 IC but for one of its 2 channels preamp and mixer stage.

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Re: Kustom 300 Part - PLEASE HELP!! [message #8587 is a reply to message #8572]

Tue, 08 May 2007 08:36

chuckb123
Messages: 5
Registered: March 2007

Junior Member

I just learned that the part number for KUSTOM is 007-7015-00. Does this help?

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Re: Kustom 300 Part - PLEASE HELP!! [message #8592 is a reply to message #8587]

Wed, 09 May 2007 11:24

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

Chuck:
The KPN 007-7015-00 chip is the standard metal front pre-amp chip. The Kustom number is 739, which actually is an RC4739, XR4739 or NTE725 chip. This is a 14 pin, dual op-amp.

The bad news is that it hasn't been made in 10-15 years. You can sometimes find them on eBay or online at the many electronics parts places. Try Vibro World or Antique Radio Supply.

Another alternative is the adapter board that is available from PAIA, that will allow you to use any standard 8-pin, dual op-amp in place of the original 14-pin chip.

I used to have a bunch of them, but through the years I've used them up, repairing Polytones, Tapco mixers and yes even Kustom metal front amps. I will check the parts drawers this weekend and see if I still have one around.

Bill

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