A friend of mine needs a single MN3004...

[A.S.P.]

I-got TDA1022, but Z seems to have disabled reply notifs?

[bajaman]

I was (am still ) looking for two MN3004 ICs, for building a Korg CX3 leslie simulator.
I manged to get some MN3204 from Steve Daniels at Smallbear. These don't have the same headroom, dynamic range, low noise as the 3004s, but one day I may get around to using them. A friend of mine has an original KORG CX3 - I recently replaced a shitload of electrolytics in it . I was most impressed by the smooth natural sounding leslie simulator. It looks like Korg posibly intended marketing it as a stand alone unit - I don't know for sure though.
Cheers
Steve

[Dirk_Hendrik]

The MN32xx series is the low noise version of the MN30xx series. As for the headroom.. that makes me wonder seriously about the ignal levels you intent to work with?

[analogguru]

Hmm... I have at least 1 TDA 2104 (stamped from Panasonic for Valvo) which is absolutely identical to the MN3004 - if the stamping is important, i can exchange it to one of my three MN3004 in my Korg Polysix.

You need it for a friend ? A real good friend ?

hmmm.... the problem is, i dont make business with it, and i don´t neet a MN3102/MN3208 combo.

But I would exchange it for a copy of the schematics of the Nano-Head, the Octane, and the Box of rocks.
This shouldn´t be a big problem for you if it is a real good friend....

I think that this should be a good deal for you, cause your costs are much less than my shipping cost, if you send me the schematics as .gif, .jpg or pdf via e-mail.

analogguru

[Mark Hammer]

The MN32xx series is the low noise version of the MN30xx series. As for the headroom.. that makes me wonder seriously about the ignal levels you intent to work with?

Hmmm, I always got the sense from reading over the specs on the MN3xxx datasheets that the later series (MN32xx and MN33xx) permitted less headroom by virtue of their lower operating voltages, hence worse S/N ratios.

[zachary vex]

it does need to be an exact pin-for-pin replacement because it's for a repair to an old Roland Space Echo/Chorus.

[analogmike]

The MN32xx series is the low noise version of the MN30xx series. As for the headroom.. that makes me wonder seriously about the ignal levels you intent to work with?

Hmmm, I always got the sense from reading over the specs on the MN3xxx datasheets that the later series (MN32xx and MN33xx) permitted less headroom by virtue of their lower operating voltages, hence worse S/N ratios.

Correct, the 32XX is low voltage, not low noise.

[Processaurus]

it does need to be an exact pin-for-pin replacement because it's for a repair to an old Roland Space Echo/Chorus.

Ooh, thats how they did it, I always thought they'd vary the speed to the motor for chorusing.  Good luck, hope you don't have to give away your trade secrets to get one.

[Dirk_Hendrik]

it does need to be an exact pin-for-pin replacement because it's for a repair to an old Roland Space Echo/Chorus.

In that cas isn't the TDA1022 the easiest option? Steve has them, The are positive ground already which leaves basically to change the pinout and perhaps the input bias and the output resistor.

[Barcode80]

it does need to be an exact pin-for-pin replacement because it's for a repair to an old Roland Space Echo/Chorus.

In that cas isn't the TDA1022 the easiest option? Steve has them, The are positive ground already which leaves basically to change the pinout and perhaps the input bias and the output resistor.

if he needs a pin to pin replacement, i assume is he putting it on an existing board, meaning he can't change the pinout arrangement without reprinting the whole board. i am confused by this question....

[zachary vex]

we're not talking about a guy with soldering or any other electronics skills.  i'm not getting involved in the repair, either, just seeking the replacement part for him.  he had a tech diagnose the problem already.

[zachary vex]

thanks to Andre who is selling me one at a very reasonable price.  he says he will be putting up a website to sell some of the other MN series bucket brigades he's collected over the years, so that should be a lot of fun for everyone!  8^)