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Kustom 250-4 [message #27628]

Thu, 09 January 2020 12:23

johnnysynth
Messages: 45
Registered: June 2018

Member

I'm rebuilding a Kustom 250-4 amp. It works but is noisey and distorts in the high end frequencies
with my Wurlitzer Electric Piano. Right now rebuilding the (2) preamp sections starting with
the 14pin dual op-amps XR4739/nte725 uA739
This part is not listed in Mouser or Digikey
Any clues on this or any other -hard to find- devices
in the pre-amp section?
I replaced the two 'big can' electrolytics already
in the pwr. supply and that brought the
idyl noise down considerable
That's as far as I've gotten
Jake Welsh
johnnysynth@yahoo.com
808 755-5886
Saint Augustine, FL
1/9/20

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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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