
G600
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Everything posted by G600
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Perfectly true. And as Kevin said, we are all biased, usually into class A...
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Briliant, thanks !
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I have just completed a pair of split GRLV for the Grounded Grind. Powered by 25 VAC secondaries. I used 750V resistor for +- 15V, instead of the 1.5k for +-20V. But I'm getting +-20V, so where am I wrong ? Only one 1.5k resistor has to be changed ?
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Those are fine PHE426PB6100JR06 From Carbon BOM
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Remember that PRPs are 500V rated but can leak through their package. By raising them and depending on the circuit, it can be fine. But with the T2 batteries, It was a big problem.
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My god. This DIY is becoming dangerous ! Tinkerer, be careful, I wish you fast success.
- 256 replies
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- Circlotron
- High Voltage
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Looks like tip soldering to me. But beautiful job for sure !
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Beautiful piece of engineering !
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Paid aswell !
- 115 replies
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- carbon
- grounded grid
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LEDs
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WOW !
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Another professional-looking-premium build. State of the art !
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Just eat it. But not too soon, unless it'll taste oxygen free copper and teflon.
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You boys are a wild overtalented bunch. This one looks sweet and tiny !
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I have installed a quad of Philips Herleen ECC88. Definitely sweet with xf2 EL34.
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I haven't realized how simple the circuit is. This is a briliant move guys !
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Anybody tried PCC88 / 7DJ8 tubes with the beast ? Any reason not to ?
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But not cheaper than EL34 !
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This is pretty scary !
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A detail that could help other builders : I had to deal with a hard to adjust channel. It crackled sometimes, with blinking LEDs. I was quite desperate, and started to read the batteries adjustment techniques again. First method was Inu's, 10k at the middle and 2k full to R32 side, not good. Then, I tried to adjust without using 2k, no crackling noise, but some random "whistles". KG's silkscreen patern, all trimpots centered, not good either. Finally Kerry's way cured the thing : 6.55V at 22k resistor using 10k pots while keeping 2k centered, then fine tune with 2k. So keep in mind that each build and each channel is unique. Be creative, walk sideways. Now the sound is scandalous, like I said... PS : 95 % Takman even in the batteries, not even raised above the PCB 750 Ohm at k216 gates 2*5pF compensation caps Matched 3675 at parallel spots Balanced and noiseless Sylvania "Green Hornets" 6922
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It is scandalous how good this amp sounds. An everyday amazement, thank you all once again for making it buildable.
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Okay, a small saving then !
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Any reason not to build a balanced version of this ?