BluRay Posted December 12, 2011 Share Posted December 12, 2011 (edited) Hi chaps. I've noticed that my 410 has acquired a slight "background buzz". I've tried different amps, bass, cables etc - and the cab seems to be the culpret. I even cleared the room out to make sure it wasn't anything nearby (son's lego box was the primary suspect!). There's no buzz when the bass volume is down, but its there in the background when I play a note. Its not drastic - but if you know its there, its annoying. Doesn't sound like full-on blown speaker or the sort of crackling you get with a dodgy connection. Any ideas what might be causing it? (its not the tweeter, as thats switched off) Thanks! Edited December 12, 2011 by BluRay Quote Link to comment Share on other sites More sharing options...
Musky Posted December 12, 2011 Share Posted December 12, 2011 Something inside touching the back of the speaker, something stuck to the magnet, loose bracing or speakers have been responsible for odd sounds in the past. Quote Link to comment Share on other sites More sharing options...
bertbass Posted December 12, 2011 Share Posted December 12, 2011 Loose dust cap on one or more of the speakers? Torn speaker? Quote Link to comment Share on other sites More sharing options...
Monckyman Posted December 12, 2011 Share Posted December 12, 2011 As above. Get the front grill off and play your bass through it with the note that causes the prob and one by one gently damp the speakers till the buzz stops. If it does stop, you have found the prob speaker and may need to repair or replace it. If it doesn`t, it`s more likely something loose on the cab.(A loose handle screw caused exactly this noise on one of mine). Also, sometimes if you have a leak of air, round a grill or handle or socket plate, you`ll get compressed air trying to escape and that makes a higher pitched sizzle. Good luck, MM Quote Link to comment Share on other sites More sharing options...
amnesia Posted December 12, 2011 Share Posted December 12, 2011 I had a slightly loose speaker fixing that made my cab rattle. It took longer to take the grill off than it did to fix the problem! If you're lucky it will be a 'free' fix with the aid of a screwdriver. Quote Link to comment Share on other sites More sharing options...
4 Strings Posted December 12, 2011 Share Posted December 12, 2011 Most likely taking the grille off, as advised above, will solve it. All rattling in any cab I've had has been the grille, especially the metal ones. Quote Link to comment Share on other sites More sharing options...
BluRay Posted December 12, 2011 Author Share Posted December 12, 2011 Thanks chaps - really helpful, as always. Its out with the screwdriver tonight then! Quote Link to comment Share on other sites More sharing options...
Big_Stu Posted December 12, 2011 Share Posted December 12, 2011 [quote name='BluRay' timestamp='1323679120' post='1465585'] Hi chaps. I've noticed that my 410 has acquired a slight "background buzz". I've tried different amps, bass, cables etc - and the cab seems to be the culpret. I even cleared the room out to make sure it wasn't anything nearby (son's lego box was the primary suspect!).[/quote] I had that once - on the advice of an older player who had a bigger T-shirt collection than me - he traced it to a loose glass lampshade on the ceiling light. Quote Link to comment Share on other sites More sharing options...
cytania Posted December 12, 2011 Share Posted December 12, 2011 Fascinating stuff and for a moment there I though my own buzzy rig problem might be down to the cab... however the buzz is there at very low volumes and brought out by a whole range of notes. Good thread though maybe one for pining? Quote Link to comment Share on other sites More sharing options...
dave_bass5 Posted December 13, 2011 Share Posted December 13, 2011 (edited) Another vote for a loose dust cap. I found it incredibly hard to track down in my 1212L as i couldn't see any gap or rip etc. Might also be worth disconnecting all but one speaker and working your way around until you find the one that buzzes. It might even be one of the speaker wires touching one of the drivers and vibrating against it. If it happens on all then its probably a problem with the cab, maybe a loose joint. The first Epifani UL112 i had also had a buzz, seemed worse on note with more low freq or when playing over the neck, i never figured that one out so took it back to the shop. Edited December 13, 2011 by dave_bass5 Quote Link to comment Share on other sites More sharing options...
BluRay Posted January 16, 2012 Author Share Posted January 16, 2012 Update for sake of closure. As people suggested, and it wasn't rocket science I'm pleased to say, I worked my way around the speakers - connecting until I found the culprit. Definitely a speaker. Funnily enough the buzz was still vaguely there with the offending speaker in but not connected (but not when I moved it out completely) so I guess its the air from the others was enough to make it resonate a bit on its own. I emailed Ashdown and they were very helpful. Sorted me out with a replacement at what seemed (to me, anyway) to be very reasonable price. Top people. The only snag was that the replacement was a visual missmatch with the others. Its a blueline speaker and the black bit in the middle (whatever that's called), was a totally different size to the others. So it looked like this I've asked them nicely to swap for a matching one, so hopefully they wont mind and will have one in stock. Never occurred to me to that the spec would change - so that was a lesson learned! Quote Link to comment Share on other sites More sharing options...
Bottle Posted January 16, 2012 Share Posted January 16, 2012 I've got this now on my EBS 4x10 - bit embarrassing when someone comes to have a noodle through it in anticipation of a sale Had the speaker grille off and think I've tracked it down to the top-right speaker, so will have to try the tips out above - it seems to be worse with the 'E'-string around the 5th fret (A), plus/minus a tone/couple of frets, although I've run the cab off of my CD player and power amp, using the Alan Parsons Soundcheck CD, it's useful for spot freqs (50Hz and 63Hz seem the worse), plus using the uncompressed 'Bass Guitar' track - I can definitely hear the rattle. Ta, Ian Quote Link to comment Share on other sites More sharing options...
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