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Re: Kustom 250-4 [message #27635 is a reply to message #27628]

Mon, 13 January 2020 07:43

stevem
Messages: 4772
Registered: June 2004
Location: NY

Senior Member

You might want to confirm that the amps driver and output stage are ok by pulling signal off of the module jack and feeding it into another amp.
If need be you can replace the 14 pin chip with two LM1458 chips on separate 8 pin sockets.

Note that these amps made after 1972 had tons of gain so as posted above you may just be clipping the input FET.
These amps bo not even need 90 milvolts of signal to be driven to full output.

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[Message index]

		Kustom 250-4 By: johnnysynth on Thu, 09 January 2020 12:23
		Re: Kustom 250-4 By: thetragichero on Fri, 10 January 2020 16:46
		Re: Kustom 250-4 By: stevem on Sat, 11 January 2020 06:27
		Re: Kustom 250-4 By: johnnysynth on Sun, 12 January 2020 07:10
		Re: Kustom 250-4 By: thetragichero on Sun, 12 January 2020 12:43
		Re: Kustom 250-4 By: stevem on Mon, 13 January 2020 07:43
		Re: Kustom 250-4 By: stevem on Thu, 16 January 2020 09:05

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