There's only one Preamp tube and one Power tube. No biasing needed with only one tube on each channel. What value tubes did you replace the stock tubes with?
+Paul Callaghan For this time I didn't bias cos I changed tubes back and forth. But yes when I retubed the amp for the first time I had to bias it. I had to take this amp to the amp tech to fix it and it was retubed and biased at the same time. I had a faulty resistor R39 which seems to be quite common problem in these amps. www.blackstaramps.com/forum/viewtopic.php?f=32&t=3586 But now it's working perfectly.
I was told it would be the the one on the right it should be bigger than the preamp tube plus I was told it was the one in the middle and there is only 2
Oh boy. That's not good. I see you noted that you later bias'd your amp, but you have to realized that your video is basically telling people to jack up their tone and cost them an hour's worth of tech work to bias their amp. In short, nobody should change a power tube without knowing they will have to bias their amp, which could cost about $50.
+Mister Tone Yes, Biasing is important but the sound I got out of the box was very good indeed. I don't know how many of the people would change the tubes themselves, but if you don't know what you're doing DON'T do it. The most important thing in this video is the combo to head change as you can obviously see =)
Its not mandatory, and honestly play it colder/hotter is a personal preference anyway. You people should try to live your lives out of the box for awhile.
Michael Shane that's because every tube you come across will be slightly different from the next in specifications. Even tubes of the same brand and type can require very different bias settings. Now, if you bought a matched pair of 12bh7 power tubes for your blackstar, and put one in with a fresh bias; whenever it dies you can be pretty safe tossing it's matched brother in it's place without another bias. Only because those two tubes are matched though, and even then it's a gamble. Depending on the conditions the spare matched tube was stored in, it's specifications could've changed by the time you go to change tubes. At the end of the day, get your amp biased when you change power tubes. It sucks ass to have to pay the $50 (give or take) but your amp will thank you for it in the long run with reliability and longevity. There's also the added benefit that if you take it to an amp tech who actually cares about their customers, sometimes they'll catch other small problems while they're biasing; and fix them before they snowball into big issues. Or there's option C. Be a cheap ass like myself and do the proper research, take the time and learn to do it SAFELY and correctly.
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Thanks just what I needed to see my local shop was charging £50 for that .
incld the tube? or just labour?
That's what i call thinking outside the box. Pun intended LOL
Benas Martinonis just labour .i had the tubes 👍
There's only one Preamp tube and one Power tube. No biasing needed with only one tube on each channel. What value tubes did you replace the stock tubes with?
your statement is not true. Even a one tube amp needs proper bias.
Yea okay lol.
@@bakstabbath yep definitely needs to be biased
What exactly do you bias one power tube with? Its other imaginary power tubes? Lol
Wow good job !
Decimator Gate Thank you. I was bored and decided to do something little different. Now I don't need the head version of this amp.
Did you have to bias those tubes mate?
Yes he should
He doesnt
That is so cool
+Dan O'Flaherty Thanks!!! Now I'm only using HT-5r as a head and DIY 1x12" closed back cab with V30 at home.
I thought do a speaker swap. The panel at the back seems to be glued in. It won't shift!!
Nice work,love the soundtrack too,its hypnotic! Is it played on the ht5 after the tube swap?
+Paul Callaghan For this time I didn't bias cos I changed tubes back and forth. But yes when I retubed the amp for the first time I had to bias it. I had to take this amp to the amp tech to fix it and it was retubed and biased at the same time. I had a faulty resistor R39 which seems to be quite common problem in these amps. www.blackstaramps.com/forum/viewtopic.php?f=32&t=3586
But now it's working perfectly.
Can you please tell me which tube slot is the pre and power
I was told it would be the the one on the right it should be bigger than the preamp tube plus I was told it was the one in the middle and there is only 2
Not a problem either way, but you don't need a cloth to handle tubes.
0:40 mine is not coming with this method
Oh boy. That's not good. I see you noted that you later bias'd your amp, but you have to realized that your video is basically telling people to jack up their tone and cost them an hour's worth of tech work to bias their amp. In short, nobody should change a power tube without knowing they will have to bias their amp, which could cost about $50.
+Mister Tone Yes, Biasing is important but the sound I got out of the box was very good indeed. I don't know how many of the people would change the tubes themselves, but if you don't know what you're doing DON'T do it. The most important thing in this video is the combo to head change as you can obviously see =)
Its not mandatory, and honestly play it colder/hotter is a personal preference anyway. You people should try to live your lives out of the box for awhile.
actually if it's too hot it can cause red plating which may lead to dead tube
No need to bias if you use the same type of tubes.
WRONG
Michael Shane that's because every tube you come across will be slightly different from the next in specifications. Even tubes of the same brand and type can require very different bias settings. Now, if you bought a matched pair of 12bh7 power tubes for your blackstar, and put one in with a fresh bias; whenever it dies you can be pretty safe tossing it's matched brother in it's place without another bias. Only because those two tubes are matched though, and even then it's a gamble. Depending on the conditions the spare matched tube was stored in, it's specifications could've changed by the time you go to change tubes. At the end of the day, get your amp biased when you change power tubes. It sucks ass to have to pay the $50 (give or take) but your amp will thank you for it in the long run with reliability and longevity. There's also the added benefit that if you take it to an amp tech who actually cares about their customers, sometimes they'll catch other small problems while they're biasing; and fix them before they snowball into big issues.
Or there's option C. Be a cheap ass like myself and do the proper research, take the time and learn to do it SAFELY and correctly.
No need to bias when there's only 1 preamp and 1 power tube.
@@bakstabbath The need to bias has nothing to do with the number of tubes. It relates to tube conductivity to control excessive flow of B+ current.