michele Posted 4 hours ago Posted 4 hours ago (edited) I've recently purchased a 2nd hand Spector Euro LX4 which I love a lot both in terms of playability and sound BUT I have a problem, I guess, with the Tone Pump preamp. Instead of trying to describe it in my non native language I attached an audio file of the noise I get from the preamp for you to listen. At the beginning of the audio file bass and treble knobs are fully counterclockwise and you could hear the very annoying noise: then I go to full on the treble knob and you can of course hear the noise increase. Before giving your valued advice please note that: 1) The noise is always there: it gets worse if I stay closer to the amp and face it but, tough less evident, it’s still there even if I stand 6 meters away and turn my back to the amp. 2) It’s not the battery (tried couple of fresh duracell 9v); 3) It’s not the cable (tried many); 4) It's not the amp (other basses don't do it) and It’s not the preamp section of the amp (-14db is engaged on the preamp, if it’s disengaged things get worse; also if bass is plugged in the effect send/return of the amp noise it’s still there). 5) It’s not a matter of adjusting the trimpot on the TonePump (noise it’s still there even with the trimpot almost to zero); Thank you for any idea, tought, advice you want to share.. Preamp noise.m4a Edited 4 hours ago by michele Quote
Lozz196 Posted 3 hours ago Posted 3 hours ago Sounds - from an iPhone speaker at least - like a grounding issue to me. Quote
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