Laney Klipp guitar amp bias question
Question: I'm trying to find out if there's a way to set the bias on my 70's Laney Klipp guitar amplifier. I've got a schematic of the head, and I think I've been able to find out that it uses a g...
- Bias resistors values on Mesa Boogie Single Rec?
Question: I was wondering if someone could help me out in identifying the bias resistors and values I need to change to be able to use EL34's instead of the 6L6''s in a Mesa Boogie Single rectifier ...
- Tube amp bias question.
... with dual elements , mounted on the chassis along with a silk-screened message indicating that the bias should be set at .5V. If I put the meter across either jack and set the voltage to.5 I get a h...
- Mesa Boogie Mk 2 ?Best Powertubes
...Mesa Boogie tubes) and am looking for the best sounding tubes I can find. I plan to have the amp rebiased at the same time. I like a warm, bluesy tone , a bit on the hot side. Can any Boogie owners...
- Biasing a tube amp .
Question: Can anybody point me to the info I need to learn to set the bias on my tube guitar amps? I have a BSEE, but my education is somewhat lacking as tubes were never discussed. Establishing s...
- Mesa Boogie Tubes
...lf by simply replacing them, or if it is necessary to open the amp for checking and calibrating the bias?? Answer: I may get yelled at by some of the more technically savvy on the NG, but in the 12 ...
- Mesa/Boogie website article (biasing)
...ie.com ) there is a long article by Randy Smith telling why his amps do not come with an adjustable bias. I wonder if any of you tech types have seen the article and any opinions. Answer: I've not ...
- Peavey 5150 or XXX in my House?
...kes it quite loud too. If you get the head version, you really need to get it modified to have the bias adjustable. It really improves the tone and performance of the amp. Clean tones will be much ...
- JCM 900 combo buzzes... Solutions?
Question: My two-year old JCM 900 1x12, 50 watt combo, which I bought used, buzzes harshly on cer...a non-musical buzz, your output tubes may not be biased properly because of a design defect. I rec...
- Peavey 5150 II problems
...hem to? Answer: I have found in the 5150s that I have worked on (both of them) that getting the bias set correctly helped the tone of the clean channel a LOT. Also, they pick the harshest 12AX7s ...
- Fender Blues Jr Questions
... the bass didn't sound so farty. I'd like to change the tubes but I believe the Blues Jr is a fixed bias amp and I have no idea how to adjust the bias so am I locked into these tubes? They are 12AX7...
- Marshall JCM 800 Lead Series Amp (what tubes?
...f it's OK to do so in fear that it was modded for the 6550 tubes. Any advice ? How do I check the bias in the amp? Would anyone have a schematic available for this? Answer: I would add that I'd ...
- Help: Marshall Guitar Amp Problem
...pendable) 6L6GC's to figure out what was happening; sure enough, after being on for awhile the grid bias would start to sag, plate current increased (and therefore of course plate voltage increased), ...
- Marshall JCM 800 Lead Series Amp (what tubes?)
...that it was modded for the 6550 tubes. Any advice would greatly be appreciated. How do I check the bias in the amp? Would anyone have a schematic available for this? Answer: I would add that I'd...
- Tube Question for Mesa Boogie owners...
... of tubes in my Blue Angel - besides Mesa/Boogie tubes - is that okay? Since there is no way to re-bias the amp? I just pulled some RCA 6V6's and an old GZ34/5ARU rectifier tube out of my '64 BFDR a...
- Mesa/Boogie amps
...ll his amps had special selected tubes (by me), every amp he used for touring had an extended range bias adjustment circuit I had installed just in case the worst happened, and proper tubes were not a...
- Questions about tubes in Marshall Power amp
... my Marshall 50 + 50 stereo valve power amp model 9005. I wanted to change the tubes on this amp, so...ith the inside of a tube amp, especially with the bias adjusting, so i found someone to do the job f...
- Help. Tube AMP problem..
...ube is not matched to the other tubes and has a totally different resistance value. That means your bias on the amp is totally way off and your amp is having to struggle to try and keep the other tube...
- Help with screwed up tubes in my used Marshall?
...able to play for more than half an hour at a time...are these tubes my problem? Answer: Get the bias voltage tested and see what it's running at. Check this against the recommended bias voltages ...
- Mesa Boogie Serial Number
...definitely the best Boogie to date. Any comment? Answer: Depends on how the Mesa circuit handles bias. If it does it per tube pair, then it might work. If it does it for all four tubes, you might...