jose

I always use this on trafo lines, from EIC to trafo. Usually I use a solid state relay and you can use T2 soft start design for do it.

I wouldn't put anything on the out put. To have a soft start I put a relay in the trafo or HV part (between amp and PSU). With 10 seconds is sufficient for the heating filaments to have some temperature.

Eric Johnson "Venus Isle"

Hum problems are a b***h. You only need patience. My SRX-P is dead silent now but I needed weeks of work to find the cause of the problem. Basically trial and error. Edit: Laowei put this layout on "Technical Assistance/Advice Thread" maybe It can help you too.

I recommended the new Tung-sol 6SN7GTB

Porcupine tree "in absentia" with my F5ha and HD600

Flat stage with final Sprint [emoji23] [emoji23] [emoji23] :

Yes, I guess that on eBay you can find some PCB, but I only use a KBPC5010 bridge diode with a R10 as Nelson Pass recomends. My ground way : Psu Ground to Star grounding (before Bridge diode) Amp Ground (Amp has G on LV and HV, really is the same plane so I only use one of them) to Star grounding (before Bridge diode) or PSU Ground. Input rca (insulate)/XLR to Volume Pot Volume Pot (insulate) to Amp. Star grounding (diode/resistor/cap) to chasis Transformer shield wire to chasis (On the same place where you put the star Grounding) Earth ground (plug) to chasis. (On the same place where you put the star Grounding) Very important: If you are using an unbalanced input, you must bring the "cold" channel to ground.

Sorry, English is not my language. If you take a look at my photos, you can see that I separated as possible the heating lead to the rest. I did a star grounding with a simple loop breaker (with a bridge diode) I'm sure that you know this but I recommend you read this http://sound.whsites.net/earthing.htm

BH Psu vs KGGR ? This can be a good topic to discuss and learning.

If it can help you; I had similar problems with 6 step and a f@$k Hum. I changed the ecc81 quads until I found a perfect mach quad at the same time, I separated the AC lines and did a ground loop breaker. Now my amp is absolutely silent and the different between triodes is around 3~8 volt.

Happy birthday

Oh guys, my Dl-103 and I love this vinyl: I have the same edition (rhino label)

Happy birthday!

Porno [emoji41] [emoji41] [emoji41] [emoji41] [emoji41]

happy birthday!!!!

Ummm I'm interested. Only for 400v Psu? I'm burning some EL34 and I recognise that the sound now is much better so I'm happy however, I wouldn't mind testing your mod.

Happy birthday!

It´s a nice ride. Here, I use 34/50 compact with 11/32 or 36/52 compact with 11/28 but my friends use a 34/50 with 11/28.

jajaja, thanks but you have a nice wall of 400 ft in approx 4 miles?. It's very hard. What development did you use?

Wise words...

It has to be a nice ramp.

I like this álbum... Lauryn has a nice voice.

something like Rihanna ... of course, Vinyl 180 grms