Author Topic: What OpAmp is used in the 5-pin preamp?  (Read 683 times)

Offline sean

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What OpAmp is used in the 5-pin preamp?
« on: May 27, 2017, 12:30:25 AM »


Can somebody look inside their 5-pin preamp with sliders and tell me what dual Op Amp chips were used?
See http://www.fenderrhodes.com/org/ch11/fig11-1.jpg
The service manual doesn't say.  They only identify it as Rhodes part number 013528.

Was it LF353, TL082, NE5532, or lowly uA/LM1458?
And what is the assembly and part number printed on your circuit board (015244/015245 or 013487/__)?

Just curious,

Sean

P.S. - I have a 5-pin preamp, but it is the model with five knobs.  It uses four single-channel op amps for the audio paths, and two dual-channel op amps for the tremolo oscillator and LDR drivers: four NE5534 chips and two RC4558 chips.




Offline Jenzz

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Re: What OpAmp is used in the 5-pin preamp?
« Reply #1 on: May 29, 2017, 03:31:52 PM »
Hi .-)

Audio path: 2x 4558
Tremolo LFO: 1x 1458

Jenzz