Guitar Amp- Tube Change
January 26, 2007 3:33 PM Subscribe
Replacing power tubes in a guitar amp
posted by InfidelZombie to media & arts (12 answers total) 1 user marked this as a favorite
I’ve been considering swapping out the power tubes in my amp. I have a 100 watt Carvin 3212 2x12 combo with Groove Tube 5881s, and I’m wondering if I could get a more Marshall-like sound by using EL34s instead. Spent some time on Google but the information I’m getting is pretty technical; I really need some more straightforward answers to the following:
1. Has anyone here done a similar change? Did it make a significant difference in the sound you got from your amp? Any unforeseen problems?
2. The amp has a bias switch to go from 6L6s or 5881s to the EL34s. A lot of what I have read talks about bias adjustments that would need to be done by a professional, but I’m not sure whether the switch would take care of that or if further adjustments would be needed. Can I just flip the switch and install the tubes myself, or should I take it to a pro? What’s a normal price for that service?
3. The amp is switchable down to 50 watts, which is how I usually play. Right now the switch is broken and I’m locked in at 100. Can I just pull out two of the tubes to get to 50, or should I get that switch fixed? What do you think it would cost?
4. Does anyone know a reliable amp repair shop in the LA area, preferably somewhere between Redlands/San Bernardino (where I live) and Whittier (where we practice)?