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AD-900 stopped self-oscillating. HELP!

stereotypy

Member
Messages
289
i own this nice pedal - the maxon ad-900 - for over 2 years now. yesterday i wanted it to self-oscillate in our bands rehearsal but it didn't... it simply was.. well kinda to weak. the last time i self-oscillated with it is probably 2 months ago. the delay by itself sounds normal to my ears.

what is wrong?

thanks
 

Teahead

Member
Messages
1,375
Oscillation can be dependent on input signal, I've had delays that are almost impossible to oscillate without playing something first to get it started. Where others will take off all on their own with only some knob twiddling. Were there any variations in your set up? Different guitar or previous boosts maybe?
 

Dandy13

Member
Messages
991
my dm2 does that when the battery starts to die. Are you using the correct power supply? i believe the ad900 runs on 12 volts.
 

stereotypy

Member
Messages
289
yes, i am using the flatliner power supply. so power supply shouldn't be the issue. the same with the input signal. i changed the order ad-900 <-> tc electronic tremolo. when it didn't oscillate i turned it back again but didn't make any difference.

i am going to try it out again at our next rehearsal on wednesday. well... i hope it just had a "bad day"....
 

stereotypy

Member
Messages
289
tried it again and again. so there is definately no more self-oscillation and it had the best i have ever heard....

are there any opinions?! really need help there...
 

Teahead

Member
Messages
1,375
You could send it to someone to be tweaked. With the right ears and equipment the internal trimmers can be set up. Analog Man comes to mind, but maybe you would prefer someone in Europe?
 

stereotypy

Member
Messages
289
well maybe i just open it myself and tweak it little to my ears... because i can't miss it for long time.... oh ho.... if i only knew... haha...

everythings fine for you mr. teahead?
 

Teahead

Member
Messages
1,375
Everything's great here Flo, thanks for asking mate! Just got myself a used Cornell 18/20 Plexi and enjoying it lots. Hope things are good with you also, aside form the sick AD-900?

Be sure to mark the trimmers before attempting any tweaks!
 




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