Jump to content
Why become a member? ×

How to fix the noisy crack/snap when I turn my bass combo off?


kiat
 Share

Recommended Posts

Hi,

I've an old tube Traynor Bloc 80B bass combo, that, after I turn every knob down to zero, then turn the power off (there is a switch at the back or at the mains) - there is a very loud short sharp sound through the speaker like a crack or snap that makes my band mates jump. The volume is like I was playing it at half-volume. It's done it for years, but I'm using it more at rehearsals and I just want to get it sorted. Any ideas?

Link to comment
Share on other sites

[quote name='Twincam' timestamp='1480625799' post='3186008']
Tube? Nope its all transistor.

Its probable best to get it serviced. It could be it has some capacitors that stops that thump or at least dampen it that need changing.
[/quote]
Thanks Twincam. As it was so old I thought out was tube, as I'd not peeked inside and I couldn't find the spec online for it.

Before I take it to a specialist, if it was something fixable by a layman, then I'd give it a go.

Link to comment
Share on other sites

  • 2 weeks later...

[quote name='Chienmortbb' timestamp='1480892933' post='3187955']
The problem is that your amp is putting DC through to your speaker as the power supply collapses. It may or may not be a fault and probably won't hurt your speaker but it is not nice.
[/quote] Thanks for the explanation. Is this a common thing with combos?

Link to comment
Share on other sites

Lots of combos do this to a greater or lesser degree. I suppose you could fit a relay to disconnect the speaker as the power is switched off if it is all that bothersome, or even get a double or triple pole mains switch and route the speaker wire through the normally unused poles.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...