Ibanez - RC-99 Rotary Chorus  [schematic]

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Dirk_Hendrik
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Post by Dirk_Hendrik »

For component values I cannot make confirmations as all is on quick notes and some scans made over a year ago. As for the schematic I could check and re-check for possible errors. However, whatever I will do, AG will pick out a few more. Let's say I'm lazy and will just wait :lol:

http://www.dirk-hendrik.com/temp/ibanez_rc99.pdf
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Post by analogguru »

Thanks for the schematic...
However, whatever I will do, AG will pick out a few more. Let's say I'm lazy and will just wait :lol:
Hmm... But I am lazy too.... :lol: and didn´t already trace it... I even haven´t had one in my hands or seen some guts... so this time you have to look for yourself for errors... :lol:

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Post by Dirk_Hendrik »

No prob ;)

I'll try to dump the PCB layout online next week. That will give the ones who do have a Christmas holiday something on their hands.

ther than that,
I did build that PCB with the component values displayed here. If I have made errors at the time it doesn't mean the thing doesn't worlk.

Note needs to be taken that a lot of this schematic could just be taken from the Ibanez SC10 chorus. They're definitely cousins.
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Post by analogguru »

The clock circuit around the MN3102 is identical to the CS5.

The "big difference" is only the use of a compander instead of pre/de-emphasis like in the SC10 or CS5.

It´s a chorus.... there is not much new to invent.... except a good sounding name...: "Rotary Chorus"

Locobox also had a "Rotary Phaser".... And I also couldn´t find anything "rotating"... :roll:

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Post by Stephengiles »

very nice drawing again!

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Post by axiss »

Nice, that's one I've always liked. I agree there's nothing "rotating" in it, but just a nice chorus (and I don't usually like'em at all).

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Post by Dirk_Hendrik »

Update:
PCB layouts, component placing and BOM, all in a handy .zip package:

https://www.dirk-hendrik.com/temp/ibanez ... ackage.zip
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Post by bajaman »

Thanks Dirk :wink:
This should be in the DIY projects section :wink:
Good work and thanks for sharing with us.
Merry Xmas
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Post by swt »

wow guys you make me jealous...the rc99 is the only one i don't have from that line. I have the tk999, the ph99, ad99, fl99...miss that one. Hope to have it one day...

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Post by Dirk_Hendrik »

swt wrote:wow guys you make me jealous...the rc99 is the only one i don't have from that line. I have the tk999, the ph99, ad99, fl99...miss that one. Hope to have it one day...
Now you make me jealous!!
How about a few gutshots of those!! :wink:
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Post by modman »

bajaman wrote:Thanks Dirk :wink:
This should be in the DIY projects section :wink:
Good work and thanks for sharing with us.
Merry Xmas
bajaman
This is true. If you are ok with that, DH?
Just let me know and I'll move it there.

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Post by Dirk_Hendrik »

Well, since I put the layouts together with the stuff the project is quite "do-able" for the more experienced pedalpushers. I'd say, go right ahead :wink:
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Post by swt »

hey dirk! i'll take some hi res photos of those pedals as soon as i can. Shoot an order...mm...phaser has a comp ic in it, maybe a good start...

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Post by Dirk_Hendrik »

Don't bother an order. Just start! ;)
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Post by pedalgrinder »

Did anyone actually do a clone of this one????? Looks like a great pedal thinking about doing one for myself. Dirk you do the best schematics i have ever seen in forums.
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Post by Bastelfixx »

if anybody has built this chorus - can I substitute the 2 SA 1015 with an BC 558B? Can anybody give values to calibration??
I will have/built this chorus :wink:
How can give some gutshoots?
My english is very bad - I know! :oops:

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Post by Dirk_Hendrik »

Bastelfixx wrote:if anybody has built this chorus - can I substitute the 2 SA 1015 with an BC 558B?
Yes you can.
@pedalgrinder,
Yes. I have built this one years back.
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Post by pedalgrinder »

Hey Dirk is there a track side pic of this somewhere i could get my hands on or is there possibly one on the way. Would be interesting to see some guts shots of the original on this one but i haven't come across any on the net. cheers
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Post by Bastelfixx »

Thanks Dirk for this nice layout.
It sounds good.

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Post by Bastelfixx »

Hey Dirk, has you built the chorus with true bypass or like the chematic?!

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