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Post by lerner on Oct 26, 2022 13:37:05 GMT -7
my greasy ass fingers would have that all fucked up...
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Post by phish-bot on Oct 26, 2022 18:48:41 GMT -7
I’ve always wanted my strat to have all black hardware. Wood and black baby!!
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Post by bear on Oct 27, 2022 13:20:30 GMT -7
I was trying to raise the power tube dissipation to get more out of that little amp so I ordered one more resistor that i didn't have in order to do this finishing touch, and I found a mistake I made in wiring, and one in measuring the voltages! I wired the voltage dropping resistor before it hit the tube instead of after and I was measuring the bias voltage on the wrong pin of the tube. It didnt sound bad but now its like a perfectly adjusted carburetor. We are roaring through every gear. The tube is rated for 275 volts and I'm coming in at like 280 but I'm kinda like fuggit because that's how you get great guitar tone. On the Fender Champ you can routinely run 6V6 tubes at over 100% dissipation and that's part of their mojo, but this 6AQ5 tube I have read is a little less forgiving than it's big brother. I have even read one power user known as Lord Valve ran a single JJ 6V6 tube at over 30 watts before the plates started smelting. What's the worst that could happen with 108% dissipation? I rock the f out and I have spare tubes in waiting.
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Post by bear on Oct 27, 2022 15:51:45 GMT -7
It's perfect. I love it. It's done. It's everything. Loud and meaty and bright and dark and creamy and egdy and clean.
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Post by bear on Oct 27, 2022 16:45:55 GMT -7
Robrob has a tube calculator. robrobinette.com/Tube_Bias_Calculator.htmIt has the specs of various tubes programmed in so I pick a tube (6QA5) and type in my voltage reading (280v). Then, I put the number of tubes (1), the cathode pin voltage (7.5v), and the size of the resistor I used to bias (150 ohms) and it gives me the dissipation which is how fuggin cranked it sounds with saturation and added harmonics. It actually increases the harmonic content of your input signal, so if you are hitting a note around 1khz it is putting added complexity on the sound at octaves and other intervals above like 2khz, 4khz and 8khz. That complexity is the reason Brian May's guitar, or other stacked signals like the dual lead guitars in Boston solo sound so fucking good. Those added layers of richness make it sound so much sweeter, like a section of 8 cellos playing the same thing instead of just one, or a choir instead of a soloist. That's what makes analog tube guitar amplifiers so hard to reproduce digitally because they do not have a linear response to input, it's dynamic and responsive - it's sensitive. And our dynamic, magical ears feel this through the air because they are also sensitive and more so than a computer program.
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Post by higs on Oct 27, 2022 18:03:44 GMT -7
I explained how our eardrums work as being same as how speakers work, only opposite, the other night. It's a beautiful thing.
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Post by bear on Oct 28, 2022 0:25:16 GMT -7
Testing tube durability at voltage started at 220 AM. +1 hour no signs of problem Eerie blue glow is a feature not a bug
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Post by bear on Oct 29, 2022 21:18:24 GMT -7
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Post by bear on Oct 29, 2022 23:18:44 GMT -7
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Post by bear on Oct 30, 2022 23:25:26 GMT -7
I accidentally broke the on/off light wire on my '72 Acoustic 136 bass amp Ah fuckleshits It took me way longer to fix this than I care to admit. The LED lead broke flush with the housing so it was a very tiny job like repairing the jewel mount on a diamond engagement ring. I replaced some of the caps and the treble hiss went away so I'm stoked. Another one ready for sale.
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Post by bear on Nov 3, 2022 15:40:00 GMT -7
Tool I am getting: capacitance measure
My Acoustic Control Corp amp lost its mojo after the recap. The noise is gone but now its not loud anymore. Wack. So I have to retrace my steps and see what the capacitors I replaced actually measure so I can put in the matching rating to bring it back.
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Post by salmon401 on Nov 5, 2022 9:41:56 GMT -7
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Post by phish-bot on Nov 5, 2022 14:28:53 GMT -7
My brother finished bringing the action lower on my Taylor thing is so easy to play😛
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Post by salmon401 on Nov 5, 2022 15:27:56 GMT -7
This guy is man handling the shit out of this big hollow body and his partner is on a strat. 70s covers but they just broke out some Green Day Stopped by for a drink and these guys are back. He’s got a new red guitar, and the Phil sweatbands on his arm. Still mixing in Green Day with 70s guitar rock.
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Post by salmon401 on Nov 5, 2022 16:26:07 GMT -7
Now they’re playing a Poison cover.
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Post by bear on Nov 6, 2022 12:42:11 GMT -7
Science. I've got a bag of the correct diodes. Think I'm about to get a Centura... I miss my KTR.
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Post by bear on Nov 6, 2022 12:57:11 GMT -7
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Post by bear on Nov 6, 2022 12:58:05 GMT -7
Oh shit I just got a great idea. I'm going to put these diodes in a Big Muff...
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Post by hokiejoe on Nov 6, 2022 13:03:52 GMT -7
Now they’re playing a Poison cover. Could have convinced me that was Tony Bourdain.
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Post by bear on Nov 6, 2022 14:02:42 GMT -7
Tool I am getting: capacitance measure My Acoustic Control Corp amp lost its mojo after the recap. The noise is gone but now its not loud anymore. Wack. So I have to retrace my steps and see what the capacitors I replaced actually measure so I can put in the matching rating to bring it back. Suspicion confirmed. The schematic says 50 microFarads so thats what I ordered. The part they used was a 63 mFd but what the fifty year old cap actually reads is 96 mFd. That's why I lost volume.
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