| Author | Message | ||
     LongFrost |
Hello again. While rocking out at home I tried turning the bass up some on my RD-sixety-five,no 12ax7,112 combo. the speaker was at some point replaced with a peavey black widow. I turned the colume up to note the response at higher volumes(1/2 throttle) and the speaker stated making a mechanical slamming noise. it stopped as I turned the volume and bass down. Any ideas? Would lowering the value of the bass cap help. I have a feeling that the peavey speaker was not made for this kind of abuse. Am I over powering the speaker or does that sound like an internal problem. Possibly mechanical noise from the tubes? That one is a stretch I think. sounded like metal slamming. | ||
| Steve Kennedy |
If you were actually playing a bass guitar through it my guess would be that you were mechanically over-stressing the speaker. Guitar speakers aren't built to reproduce bass frequencies at those power levels and are easily pushed to extreme cone excursions when very low frequencies are applied. That mechanical knock you hear is probably the voice coil form hitting the front of the magnet structure! If it hurts when you do that, then don't do that! Steve | ||
| LF |
I threw in a pair of 60's mullard's and the knock stopped. |