Shambo Posted October 2, 2010 Share Posted October 2, 2010 I'm the owner of a Demeter Opto Compulator pedal which, when 9v battery powered, easily fulfils my simple compression needs. However, when I try to power it with an ac/dc adapter by the mains, it emits a clearly audiable whistle. I'll admit the adapter wasn't the most expensive in the shop, ('Lynx Multi Power Supply' from Dawsons), but I didn't want to spend a fortune to power just a compressor and a tuner. It powers my TC Polytune perfectly well on its own BTW. Have any other forummers experienced something similar before I throw money at getting the cherished pedal fixed, or should I just buy a pricier adapter? Quote Link to comment Share on other sites More sharing options...
Lenny B Posted October 2, 2010 Share Posted October 2, 2010 [quote name='Shambo' post='974907' date='Oct 2 2010, 12:36 PM']I'm the owner of a Demeter Opto Compulator pedal which, when 9v battery powered, easily fulfils my simple compression needs. However, when I try to power it with an ac/dc adapter by the mains, it emits a clearly audiable whistle. I'll admit the adapter wasn't the most expensive in the shop, ('Lynx Multi Power Supply' from Dawsons), but I didn't want to spend a fortune to power just a compressor and a tuner. It powers my TC Polytune perfectly well on its own BTW. Have any other forummers experienced something similar before I throw money at getting the cherished pedal fixed, or should I just buy a pricier adapter? [/quote] Why not take it to a shop to try a pricier adaptor? If that works, great, if not then get it looked at. Not to ask a stupid question, but is the adaptor you're using actually compatible? (but I don't know how it could not be...) If it works fine with batteries, then I'm thinking it's more likely to be the adaptor than the pedal... Quote Link to comment Share on other sites More sharing options...
gafbass02 Posted October 3, 2010 Share Posted October 3, 2010 My wah started to whine when it got too close to my gator psu if that helps? Quote Link to comment Share on other sites More sharing options...
Shambo Posted October 10, 2010 Author Share Posted October 10, 2010 Now the search function is working again, I've found abit more information. [url="http://basschat.co.uk/index.php?showtopic=15912&st=0"]http://basschat.co.uk/index.php?showtopic=15912&st=0[/url] Quote Link to comment Share on other sites More sharing options...
Happy Jack Posted October 10, 2010 Share Posted October 10, 2010 More information would help - what tune does it whistle? Quote Link to comment Share on other sites More sharing options...
Shambo Posted October 10, 2010 Author Share Posted October 10, 2010 [quote name='Happy Jack' post='983817' date='Oct 10 2010, 09:40 PM']More information would help - what tune does it whistle?[/quote] whine and grine... ...a high pitched whistle, not a 50htz mains hum. Quote Link to comment Share on other sites More sharing options...
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