G600

I'm pretty sure I have the same problem too. No devices to test it. But as far as I remember in this topic, it is always the right channel that causes trouble. Mine too. There must be something in the layout, no clue till now.

How much should we bias the EL34 ? Is it 20 mA like the Carbon, or more 25 mA, like the many designs with EL34 ? Or personal taste ?

Was it a Dynahi-powered Beats© ?

Interesting reading. If a black thing looks & tastes like shit, how could that be carbon ?

Just paid !

GRLV @+-15V GRHV @ +459 and +464V Waiting for a few more passive before starting to wire the Thing.

140*70 cm, 5 Kg roughly And not Sumr, but British one-man company with stellar products.

Received the transformer today. Didn't imagine such a big boy. But perfectly built. Changing plans for casing, unless it won't fit. Despite some mistakes and need of adjustment (make the tubes symmetrical for sure), you get the idea :

For sure ! I use the RENY screws I have left from the T2, with spring washers over standard washers. Outstanding stuff from Chemis. The steel screw you can see just holds the board in place.

Drill press madness...

Not built, still waiting for the custom transformer, and a bigger issue is the lack of a drill press and the related skills. Still being a very young padawan in DIY. Need some more weeks before completion.

I'm building it with +-450V supplies. Still a bit afraid of the possible short between B- connection and the feedback trace, like it happened to insanity's Carbon.

It's my only source of wire. Teflon is not easy to strip, but that's not the point.

Amen to that too. I sometimes use another system, but no one beats the hell out of the headphones like the T2. Both Dr Hayashi & Gilmore deserve a thought each time the music starts. PS : my Grounded Grid is coming, gonna be the "portable" little brother...

I bet switching 450 VDC is not easier ? No easy way then... Found some useful kowledge here

How do you guys read the power switch ratings ? I'm looking for a simple 2 pole mechanical switch for high voltage secondaries. I often see 250VAC - 10Amp stuff. Is there a rule of thumb, like more voltage possible with less current ? aka could they handle 360 VAC @ 400 mA ? Thanks for the tip.

Is there any way to delay a transformer secondary ? I wanted to build the GG with a single transformer...

Copied. It's going to complicate my thing a bit.

Is there any need of a a HV delay ?

So sweet sorenb !

Perfectly true. And as Kevin said, we are all biased, usually into class A...

Briliant, thanks !

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 ?

Those are fine PHE426PB6100JR06 From Carbon BOM

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.