question regarding op-amp for Leslie 60 controller clone (help please)

[dansamp]

I just picked up a set of Leslie 60 speakers for my Wurly!
the controller kit is missing
here is the schematic I found online :  www.vintagevibe.com/misc/Leslie%20Speakers%20Console%20Connector%20Kit%207022%20Installation%20Instructions.pdf

,
  anyway if some one could take a look at the schematic and please let me know what type of op amp I could use for it
the schematic only lists it as a I.C. op-amp
could I use a 4558 ??

also one pot is 500k CCW (is this a reverse log ??)

the other is 100k CW (is this an audio taper pot ??) 

your help would be greatly appreciated

Thank You

Dan.....................

[Mark Hammer]

The chip is a single op-amp.  The giveaways are as follows (for your future reference):
1) Power goes to pin 7 (that would be 8 on a dual)
2) Output is pin 6
3) there is a small compensating cap (33pf) between pins 1 and 8, which is where compensating caps always go on singles.

I honestly don't know what the original was, so I'm going to wing it and suggest a TL080.  This is a single bifet op-amp that has pins for a compensation cap between 1 and 8.  Specs on the chip are good and it should handle the 4.7M feedback resistance with ease.

Note that this is NOT the same chip as a TL071.

[dansamp]

thank you soooooo much 

[dansamp]

ok, more help please 
it seems to be a hard op-amp to locate

where can I find a TL080CPE4
I e-mailed small bear but am waiting on a reply

any suggestions ??

again thank you very much for your help

Dan...............

[patman]

You can buy the TL080 from Jameco or Digikey

https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=821861

http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=315265&Site=US&Cat=34275899

[Mark Hammer]

You can always just skip the 33pf compensating cap and use a TL071.  Sorry.  Should have just said that in the first place.  Didn't know getting a TL080 would be an issue.

[dansamp]

so if I take out the 33pf cap I can just pop in the other one

I was thinking I was going to have to make my own preamp 

again thanks Mark   

[dansamp]

ok,
so here's an update for anyone who is interested
I received the opamp from digikey and popped it in and lo and behold it works !!!!!

thank you so much Mark !!!!


now I have to figure out why I only get sound out of one of the channels

I have narrowed it down to the space generator  here is the link to the servie manual : http://www.vintagevibe.com/misc/leslie%20Speaker%20System%20Models%2060_70.pdf


the signal goes into the space generator and gets split into a high and low signal

feeding each speaker powered by it's own amp

so you get stereo chorus/ vibrato I think it ends up being true pitch vibrato

I am not sure how to trace this out since I am not sure what I am looking for

by the way I think it is the same set up that was used in the Fender Rhodes MK V which sounds awesome !!

anyway if any one can help that would be great,.............. Mark ?

[dansamp]

anyone??