Where can i order a set of power tubes for my 6534+ in canada?
- Thread starter Chazzy
- Start date
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
Not gonna happen... any time you swap the power tubes you need to rebias. The vendor has no way of knowing what your bias is set at so they wont know what tubes to send you. You can swap your preamp tubes with no biasing though. The factory test points on the 6534's are notoriously inaccurate so it needs to be biased using a real set up with a bias probe.
For Canada http://www.thetubestore.com/ has great service
Not gonna happen... any time you swap the power tubes you need to rebias. The vendor has no way of knowing what your bias is set at so they wont know what tubes to send you. You can swap your preamp tubes with no biasing though. The factory test points on the 6534's are notoriously inaccurate so it needs to be biased using a real set up with a bias probe.
For Canada http://www.thetubestore.com/ has great service
Boogie Bill
New member
Re: Where can i order a set of power tubes for my 6534+ in canada?
The Tube Store should be able to fix you up. Tell them what amp it's for. I'm not sure about the newer Peavey's, but the older ones were fixed non-adjustable bias. Get the right spec-ed tubes and you should be able to drop them right in.
Bill
The Tube Store should be able to fix you up. Tell them what amp it's for. I'm not sure about the newer Peavey's, but the older ones were fixed non-adjustable bias. Get the right spec-ed tubes and you should be able to drop them right in.
Bill
GilmourD
Burritotoneologist
Re: Where can i order a set of power tubes for my 6534+ in canada?
Sent from my Moto X 2014 using Tapatalk
6534+, like the 5150-II/6505+, has bias probe ports on the back and an externally accessible bias pot. If you have a multimeter you can do it yourself fairly easily, as long as you know the proper current spec for the amp.
Sent from my Moto X 2014 using Tapatalk
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
The bias points are notoriously inaccurate it's better to bias using s separate probe.
The bias points are notoriously inaccurate it's better to bias using s separate probe.
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
Here check it out you don't have to take my word for it.
Here check it out you don't have to take my word for it.
Re: Where can i order a set of power tubes for my 6534+ in canada?
The tubestore has been my only tube source for about 10 years and they absolutely rock.
As been said, tell them which amp they'll go in and they'll help you out with a set that should be close enough, although I do recommend learning how to bias, especially if you have bias ports, which should do the trick (never heard anything about nor can think of any reason why they shouldn't work nicely).
The tubestore has been my only tube source for about 10 years and they absolutely rock.
As been said, tell them which amp they'll go in and they'll help you out with a set that should be close enough, although I do recommend learning how to bias, especially if you have bias ports, which should do the trick (never heard anything about nor can think of any reason why they shouldn't work nicely).
GilmourD
Burritotoneologist
Re: Where can i order a set of power tubes for my 6534+ in canada?
I always figured they did the 1-ohm resistor "mod".
http://forum.metroamp.com/viewtopic.php?f=3&t=26973
Alright... Interesting...
I always figured they did the 1-ohm resistor "mod".
http://forum.metroamp.com/viewtopic.php?f=3&t=26973
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
The video i linked from eurotubes didnt give a good enough reason why they dont work nicely?
The video i linked from eurotubes didnt give a good enough reason why they dont work nicely?
Re: Where can i order a set of power tubes for my 6534+ in canada?
Didn't watch it and while I'm sure he makes good points I have the following thoughts:
1- not all probes are implemented the same, some might be better.
2- biasing with probes is still better than just randomly plugging tubes withiut doing anything.
Didn't watch it and while I'm sure he makes good points I have the following thoughts:
1- not all probes are implemented the same, some might be better.
2- biasing with probes is still better than just randomly plugging tubes withiut doing anything.
Last edited:
GilmourD
Burritotoneologist
Re: Where can i order a set of power tubes for my 6534+ in canada?
Oh, it did. It's definitely weird that they didn't just do it the easy way with a 1ohm resistor between pin 8 and ground and read the voltage across that.
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
Sorry ive just always been one that prefers to do something right. The bias points are dishearteningly inaccurate making any thing you do with them pretty much a guess and I dont know anyone who advocates biasing by "guess". As luck would have it the bias sweep on those amps is fairly narrow worst case scenario is hes pissed that his new tubes only lasted 4 months cause they were biased a bit hot. More likely the amp just wont sound as good as it could and have as low of noise floor as it could with a proper biasing. Would bother the crap outta me knowing that its likely my amp isnt sounding as good as it could.
Sorry ive just always been one that prefers to do something right. The bias points are dishearteningly inaccurate making any thing you do with them pretty much a guess and I dont know anyone who advocates biasing by "guess". As luck would have it the bias sweep on those amps is fairly narrow worst case scenario is hes pissed that his new tubes only lasted 4 months cause they were biased a bit hot. More likely the amp just wont sound as good as it could and have as low of noise floor as it could with a proper biasing. Would bother the crap outta me knowing that its likely my amp isnt sounding as good as it could.
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
Yeah its a weird deal. The rumor ive heard but never bothered to confirm its a liability issue. The rumor is that this type of bias probe is slightly more idiot proof and less likely to shock the livin crap outta someone than others are. Ive never looked into it though so like everything else on the net there is a large chance it isnt true.
Yeah its a weird deal. The rumor ive heard but never bothered to confirm its a liability issue. The rumor is that this type of bias probe is slightly more idiot proof and less likely to shock the livin crap outta someone than others are. Ive never looked into it though so like everything else on the net there is a large chance it isnt true.
Re: Where can i order a set of power tubes for my 6534+ in canada?
Pardon my stupidity.....but did I hear that video correctly.?
The bias points are reading the Neg Grid Bias.?
Man, that is almost useless. I wonder why they did not set it up like most do.....to read voltage drop across a small value Cat Resistor.?
Pardon my stupidity.....but did I hear that video correctly.?
The bias points are reading the Neg Grid Bias.?
Man, that is almost useless. I wonder why they did not set it up like most do.....to read voltage drop across a small value Cat Resistor.?
GilmourD
Burritotoneologist
Re: Where can i order a set of power tubes for my 6534+ in canada?
There's some math in the thread I linked to above which explains why this works. I'm not sure why there would be any liability inherent to it like Edgecrusher said, at least any more than any other method.
That's what I was saying. LOL
There's some math in the thread I linked to above which explains why this works. I'm not sure why there would be any liability inherent to it like Edgecrusher said, at least any more than any other method.
Edgecrusher
Well-known member
Re: Where can i order a set of power tubes for my 6534+ in canada?
Nah I was just repeating the net rumour I found regarding why they chose this particular arrangement. Like many net rumours its probably patently false but then it still leaves the question of "why" open... There are better ways to do it.
Nah I was just repeating the net rumour I found regarding why they chose this particular arrangement. Like many net rumours its probably patently false but then it still leaves the question of "why" open... There are better ways to do it.
Re: Where can i order a set of power tubes for my 6534+ in canada?
I'm sure you didn't mean anything by it and shouldn't be offended but I'm having a problem with the statement above: if you've read anything I've ever posted you would know that I'm not one to do things half-assed brother, both in the amps I build and the amps I buy, use and tweak.
While I'm sure you're right, it still doesn't mean that all bias pots are useless since they might not all be implemented the same way as I highly doubt that Bob opened up all the amps with bias pots and looked at them no?. Second, often manufacturers offer a range to bias the amps with these pots (I know my Genz Benz did) which is still a good indicator as I assume the mfgs do know where to set these to at least get good tube life.
Lastly: these are all, I agree, non-optimal solutions. I'm offering those as a "better than nothing" opinion since the OP didn't seem inclined to either learn the proper way to bias with a probe nor take the amp to a tech. I'd rather try to help but that's just me.
I'm sure you didn't mean anything by it and shouldn't be offended but I'm having a problem with the statement above: if you've read anything I've ever posted you would know that I'm not one to do things half-assed brother, both in the amps I build and the amps I buy, use and tweak.
While I'm sure you're right, it still doesn't mean that all bias pots are useless since they might not all be implemented the same way as I highly doubt that Bob opened up all the amps with bias pots and looked at them no?. Second, often manufacturers offer a range to bias the amps with these pots (I know my Genz Benz did) which is still a good indicator as I assume the mfgs do know where to set these to at least get good tube life.
Lastly: these are all, I agree, non-optimal solutions. I'm offering those as a "better than nothing" opinion since the OP didn't seem inclined to either learn the proper way to bias with a probe nor take the amp to a tech. I'd rather try to help but that's just me.
