[SOLVED] RC4136 Replacement

Status
Not open for further replies.
S

Seytar

Newbie
Joined
Nov 25, 2024
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
10
I am trying to fix the Analog Bass Computer (ABC) for my KLH 1 Speakers. There is significant hiss when it is turned on that I can hear through the headphones.

There are three...2-14 pin and 1-8 pin. I am pretty certain that the noise is coming from one or both of the 14 pin.

1) MC14007UB
2) RC4136J

There are quite a few replacements for the 4007 but not really any for the RC4136. The RC4136 evidently has an odd pin out. I did come across this adapter than one can solder a couple SME Op amps. My question then is which op amps are good for the ABC or will any be better than the RC4136?
 

Sort by date Sort by votes
The MC14007 is a digital device, most likely something to do with signal routing but not part of the audio chain. The UB version can be used as a linear device but the performance is poor so I doubt that's how it is used. They should be available but the CD4007UB is a direct equivalent.

There is nothing special about the RC4136 in electrical terms but it does have that non-standard pin out. If you can get/make an adapter almost any quad amplifier will work as a replacement or you could use two dual or even four single amplifiers.

Brian.
 

Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…