Hi All,
This is a bit of a weird one but I'm hoping somebody out there may be able to shed some light on a query I have with my DB750, so I recently got a Barefaced Big Twin 2 Gen 3 cab and when I tried out the amp/cab combination I was getting a horrific noise that initially made me think that the horn on the cab was faulty. I tried attenuating the horn and this did seem to ease the symptom, although I did think I could still hear it. I asked our singer to lift the amp/tuner off the cab and by doing so the noise definitely disappeared.
This got me to thinking that something was loose in my rack, having checked, everything was found to be secure. The thing is I have heard a rattling noise coming from the rack when setting it down on the floor, so I've taken the rack apart and the top off the amp to try and identify what's going on - I've found out that inside the amp there's a row of resistors marked on the board as R103 - R108 and R109 - R114 that have some kind of insulator sleeve at one end of the soldered joint and it's these little insulators (or whatever they are) loose and moving back and forth slightly. So I don't really think there's a fault as such just a certain frequency (fretted D at the fifth fret of A string) that sets them off buzzing and rattling.
I guess what I'm after is whether anyone else has experienced anything similar and whether I need to try and isolate the rack from the cab? Kinda like a gramma pad I guess?
The frustrating thing is I really like the HF horn cranked to the max but by doing so I just get this terrible rattling noise that spoils the cab.
I have take photos of the offending parts but the last time I used Photobucket it seemed to corrupt my phone, so if anyone can suggest another image hosting software that is easy to use on mobile that'd be helpful too👍
Here's hoping that someone may be able to help😊