Members Doittoday Posted April 12, 2009 Members Share Posted April 12, 2009 I was thinking when I get a 5150 of doing the bias mod to 38mA or something, but then I thought, would this make the amp nicer at bedroom levels, but sloppier/looser at practice/gig volumes? What say HCAF? Link to comment Share on other sites More sharing options...
Members BeëlzeM Posted April 12, 2009 Members Share Posted April 12, 2009 I say yay. Adjustable bias is always a good thing if you know your way around gear. Link to comment Share on other sites More sharing options...
Members DirtyBird Posted April 12, 2009 Members Share Posted April 12, 2009 I've always heard that the opposite is true. Biasing it up makes it worse at bedroom volumes and biasing it down makes it worse at gig volume. I havent had my 5150 biased cold in 4 or 5 years or so, so I cant even remember. Link to comment Share on other sites More sharing options...
Members King Loudness Posted April 12, 2009 Members Share Posted April 12, 2009 Depends, are you planning to use it more for gigging, or bedroom playing? Link to comment Share on other sites More sharing options...
Members Doittoday Posted April 12, 2009 Author Members Share Posted April 12, 2009 Depends, are you planning to use it more for gigging, or bedroom playing? both Link to comment Share on other sites More sharing options...
Members KsE fan Posted April 12, 2009 Members Share Posted April 12, 2009 hotter bias is better for live worse for home Link to comment Share on other sites More sharing options...
Members King Loudness Posted April 12, 2009 Members Share Posted April 12, 2009 bothWhich one more so then, if applicable? Personally, I'd say {censored} it and do the bias. Link to comment Share on other sites More sharing options...
Members King Loudness Posted April 12, 2009 Members Share Posted April 12, 2009 hotter bias is better for live worse for homeThat was stated in the OP Link to comment Share on other sites More sharing options...
Members KsE fan Posted April 12, 2009 Members Share Posted April 12, 2009 That was stated in the OP no he said the opposite you {censored}head. Link to comment Share on other sites More sharing options...
Members leod_74 Posted April 12, 2009 Members Share Posted April 12, 2009 I liked me 5150's better all around when I did the bias on them. Then again, I don't really play anything at bedroom levels, thats why they invented the POD... Link to comment Share on other sites More sharing options...
Members DirtyBird Posted April 12, 2009 Members Share Posted April 12, 2009 That was stated in the OP Reread it bro. Link to comment Share on other sites More sharing options...
Members King Loudness Posted April 12, 2009 Members Share Posted April 12, 2009 Reread it bro.Ah, he phrased it as a question. Whoops. Link to comment Share on other sites More sharing options...
Members zeusecho Posted April 12, 2009 Members Share Posted April 12, 2009 hotter bias is better for live worse for home Why is hotter worse for low volume? Link to comment Share on other sites More sharing options...
Members KsE fan Posted April 12, 2009 Members Share Posted April 12, 2009 Why is hotter worse for low volume? I honestly don't know... just heard many people say this.I can kinda see why it WOULD be better for louder applications but idk about it being worse for lower volumes... Link to comment Share on other sites More sharing options...
Members BeëlzeM Posted April 13, 2009 Members Share Posted April 13, 2009 Why is hotter worse for low volume? With a high bias the volume needs to be higher for the tubes to break up. Not that the 5150 poweramp breaks up a lot in the first place, but well. Link to comment Share on other sites More sharing options...
Members KsE fan Posted April 13, 2009 Members Share Posted April 13, 2009 This makes sense so lower bias is better for lower volumes. Because when I turn my 5150 up I seriously don't dig the sound. Link to comment Share on other sites More sharing options...
Members BeëlzeM Posted April 13, 2009 Members Share Posted April 13, 2009 5150 poweramps aren't really meant to break up a lot, that's also a reason they use 6L6 powertubes. Link to comment Share on other sites More sharing options...
Members kayman121 Posted April 13, 2009 Members Share Posted April 13, 2009 I remember when I had my 6505 it sounded {censored}ty at any volume with stock bias because it had MASSIVE crossover distortion. I'm getting another one soon though, and DEFINITELY bias modding it. Link to comment Share on other sites More sharing options...
Members Doittoday Posted April 13, 2009 Author Members Share Posted April 13, 2009 so if that's true....wouldn't it be worse at high volumes with a high bias,since it would breakup more... and it would be better at low volumes with a high bias,since it would get heated easily uh? Link to comment Share on other sites More sharing options...
Members BeëlzeM Posted April 13, 2009 Members Share Posted April 13, 2009 so if that's true....wouldn't it be worse at high volumes with a high bias,since it would breakup more...and it would be better at low volumes with a high bias,since it would get heated easilyuh? No. Cause with a high bias point, it would break up later at higer volumes, so you can crank it louder with keeping the poweramp clean. Link to comment Share on other sites More sharing options...
Members walls1441 Posted April 13, 2009 Members Share Posted April 13, 2009 innie menie miney no Link to comment Share on other sites More sharing options...
Members JesterRace51 Posted April 13, 2009 Members Share Posted April 13, 2009 This makes sense so lower bias is better for lower volumes. Because when I turn my 5150 up I seriously don't dig the sound. wat? As far as comparison between stock bias and modded, The bias modded 5150 at loud volumes is overall thicker, more sustain, a little more articulate with chords and the like. Not overall a HUGE difference, but a good one none the less. Not as much grind as my stock one though...so to speak. Smoother in a sense. Link to comment Share on other sites More sharing options...
Members zeusecho Posted April 13, 2009 Members Share Posted April 13, 2009 No. Cause with a high bias point, it would break up later at higer volumes, so you can crank it louder with keeping the poweramp clean. I thought it was the opposite of that ^^^. A high bias point means the idle current and dissipation are set to a higher % of the rated watts so it it should be easier to push the tubes into max dissipation and breakup. The bias point is actually the zero point and your guitar signal will only increase the current and dissipation from there. Link to comment Share on other sites More sharing options...
Members The4thlast1 Posted April 13, 2009 Members Share Posted April 13, 2009 Yeah exactly I would say its the opposite. With a high bias setiing playing at high volume you will get more poweramp brakeup, which can traslate to mush.With a lower bias setting at high volumes you will get more clarity and tighter lows. When I say lower bias, I do not mean very low because then you get into harsh highs and loss of harmonics. Link to comment Share on other sites More sharing options...
Members Doittoday Posted April 13, 2009 Author Members Share Posted April 13, 2009 Yeah exactly I would say its the opposite. With a high bias setiing playing at high volume you will get more poweramp brakeup, which can traslate to mush.With a lower bias setting at high volumes you will get more clarity and tighter lows. When I say lower bias, I do not mean very low because then you get into harsh highs and loss of harmonics. so like, stock low? Link to comment Share on other sites More sharing options...
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