Looking for Ibanez AD-9 AD9 mods

[gluedtogether]

I just picked up one of the reissue ad9's and am looking for suggestion on mods. I have heard there are ways to make this true bypass, does anyone know if this follows the same steps at true bypassing the ts-9? Is there a better chip? Any suggestions are welcome. thanks

[gluedtogether]

Also, does anyone have the schematic for the ad9?

[Dirk_Hendrik]

I've posted the IO filtering some 2 months ago.

And,
Before drilling a bloody hole into that pedal consider using a relay for that TB and feel free to PM me if you need help. I feel it would be a shame seeing another pretty AD9 being drilled to pieces because of the damn switch.

[HOTGUIT]

I'm interested in AD9 mods too. (in making it true bypass without drilling it)
Mine is an original early '80s AD9
Where can I find your post?

[jonathan perez]

BUM syndrome attacks, again...

[gluedtogether]

Not drilling a hole would be nice. I drilled a hole throught the silver name panel on my ts-9 following a diagram by keeley. it was not too bad and works great, but it would be nice to avoid the drilling. I will search through past postings and contact with questions. one thing I liked about adding the external switch was using the stock switch for something else. I think Keeley, sets it to hold the repeat on a note which seemed pretty cool. Thanks for the note on a second option

[gluedtogether]

I just got my stock re-issue ad-9 and ab'd with my ad-80. the ad-80 had a longer delay time and warmer sound. Are there mods to increase delay time? If I replace the existing chips with the new 3205 chips from cool audio, will that change any of the sound?

[trevize]

probably piggybacking would twice the delay capabilities without losing in quality.
But I wouldn't try on vintage 3205 ics...

If you have some 3205 I would mak an add on board with them in parallel.

[Dirk_Hendrik]

I just got my stock re-issue ad-9 and ab'd with my ad-80. the ad-80 had a longer delay time and warmer sound. Are there mods to increase delay time? If I replace the existing chips with the new 3205 chips from cool audio, will that change any of the sound?

Not much.

Piggyback is a possibility. Connect the output of the first to the 2nd. It might be very wise to decouple em DC and give the 2nd one an independant Bias trimmer.

[jonathan perez]

at that rate, why not just shoot for buying a digital delay with longer delay times?

[Dirk_Hendrik]

at that rate, why not just shoot for buying a digital delay with longer delay times?

Less fun, less satisfaction when getting the job done.

[gluedtogether]

Not really interested in the digital delay route, I like the analog delays. My main goal isn't longer delay time, just nice sounding analog delay. Since my ad-80 had a longer delay, I was only wondering if I could get this to go longer. I still want to true bypass, make it sound a bit nicer/warmer. I thought about sending it to keeley for their mods, but wanted to try doing things on my own

[gluedtogether]

that is my own, with help from the forum

[gluedtogether]

Update. I socketed the opamp and the clock chips and put in the cool audio clone and a RC4558 and it sounds a bit better, although I can't ab for a true test. The delay chips are 8 pin small chip and the new delay chips are 8 pin in the size of a 16 pin. I am going to attempt to wire from the old board to the a small board that has the new chips and see if that works

if anyone has any suggestions as to other changes to try, let me know. This is a reissue so I am not worried about mods changing the pedals value.

[oldschoolanalog]

This is a reissue so I am not worried about mods changing the pedals value.

The reissues of today are the vintages of tomorrow.
Just something to think about...