kerley Posted May 20, 2009 Share Posted May 20, 2009 Hello. After some feedback from anyone that uses an After 8. Start to get hissing when volume goes past 1 o'clock and gets worse as volume goes up. The hissing stops if I put on full volume and press the extra bass button but I don't like that sound! This is all with the treble turned right down (gain doesn't make much difference to hiss) Do they all do this, am I expecting too much or is there a likely fault? Cheers, Chris. Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted March 23, 2020 Share Posted March 23, 2020 On 20/05/2009 at 21:35, kerley said: Hello. After some feedback from anyone that uses an After 8. Start to get hissing when volume goes past 1 o'clock and gets worse as volume goes up. The hissing stops if I put on full volume and press the extra bass button but I don't like that sound! This is all with the treble turned right down (gain doesn't make much difference to hiss) Do they all do this, am I expecting too much or is there a likely fault? Cheers, Chris. Sorry to ressurect a zombie thread but it is probably quite usual as the TRL072 IC used in the amp is a bit noisy. REpolacing it with a real audio opampo like OPA2134 will probably remove most of the hiss. I am reapiting mine at the moment so will pots here when I have done it and chnaged the Tl072 for an OPA2134. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.