Hot vs Cold Bias video clip

[LP Freak]

Here’s a cool video

https://youtu.be/VWEsYIg_1_o

 

[crwnedblasphemy]

that was cool. i actually prefer the 26ma. has a good in between woody tone and saturation/sustain. didn’t care for the 44ma.

 

[lespaul6]

Yep... 44 is just too much when you turn it up, gets mushy

 

[Racerxrated]

Split the difference at 35ma and it's just right.

 

[psychodave]

I liked the 33ma. 26 was a close second.

 

[Tone Monster]

33ma! Cool video.

 

[jcj]

Couldn’t watch the vid, but I usually prefer the colder side, on most amps.

I’ll check it out tomorrow.

 

[kurtsstuff2003]

I usually prefer a colder bias not that anybody gives a shit..

 

[stephen sawall]

I tend to like with most amps if cranking the amp 25-28. If playing at more moderate volumes 32-34. In general - more dB's / lower bias.

 

[psychodave]

In general - more dB's / lower bias.

This

 

[splatter]

i'm not familiar with the term "bee-ass" ? Is it something that makes the amp buzz?

as for bias I usually go between 68% and 70% the mA will of coarse change depending on the plate voltage

 

[FourT6and2]

i'm not familiar with the term "bee-ass" ? Is it something that makes the amp buzz?

as for bias I usually go between 68% and 70% the mA will of coarse change depending on the plate voltage

Finally. Was waiting for someone to say this. Bias shouldn't be talked about as a hard number. Because it's meaningless without a reference point (plate voltage, screen current, etc.). For example, "I like all my amps biased to 32mA." That statement is inane. The correct bias range will be different for every amp. Talking about it in terms of a percentage of max plate dissipation, however, is more accurate.

Calculate what 70% is for your amp. Then calculate what 60% is. Anywhere in that range is typically a good place to start. And then your ears do the rest.

 

[LP Freak]

i'm not familiar with the term "bee-ass" ? Is it something that makes the amp buzz?

as for bias I usually go between 68% and 70% the mA will of coarse change depending on the plate voltage

Finally. Was waiting for someone to say this. Bias shouldn't be talked about as a hard number. Because it's meaningless without a reference point (plate voltage, screen current, etc.). For example, "I like all my amps biased to 32mA." That statement is inane. The correct bias range will be different for every amp. Talking about it in terms of a percentage of max plate dissipation, however, is more accurate.

Calculate what 70% is for your amp. Then calculate what 60% is. Anywhere in that range is typically a good place to start. And then your ears do the rest.

I’m pretty sure everyone that referred to a specific bias number was also referring to the amp in the clip

 

[FourT6and2]

I’m pretty sure everyone that referred to a specific bias number was also referring to the amp in the clip

Not everyone.

 

[SQUAREHEAD]

26 or 33 sounds good to me, although I wish it was a blind test, I think I’m being swayed by seeing the actual numbers…
I agree with Stephen, if you were going to play an amplifier at lower volumes you can adjust a little higher, but if you were going to play at high volumes, which I do, I like to keep my amplifiers on the cool side, with a higher bais, they sound/feel choked and congested… They just don’t breathe properly…
If I had to choose between extreme hot and extreme cold, I would choose extreme cold!

 

[stephen sawall]

Too cold sounds harsh to hot sounds unfocused and mushy. There is a fairly wide range in between with a variety of colors and feel.
I agree it's better on the cold side usually.