Bigbottle MM/MC Hybrid Valve Phonostage PCB

[Vivant]

All my red led's give a reading round about 1.724 volts; is this ok?

No problem.

 

[Bigman80]

It's arrived. Top Quality board !

Awesome, thanks for letting us know

 

[craigtone]

I picked up the Chinese manufactured R-core mentioned earlier in the thread (R26-90); took 5 weeks arrive, but it's here now!

What he ^ said. I got mine on eBay ... search R26-90 but doesn't look like any right now. The seller I got mine from was along1986090 and it took a long time to ship. Analog Metric also sells it. I have used them in the past and they ship much quicker.

 

[Marra]

No problem.

Thanks Alan.

 

[snowstate]

I also ordered the R26-90 from China and received it in about 3 weeks. I picked up some K75-10 capacitors from Russia to try but now that I see how big they are I may have to try another brand.

 

[Marra]

What unloaded secondary voltages are you guys getting with the R26-90's. Particularly the high voltage one.

 

[Vivant]

Usually about 185-190V, That's perfectly OK, in fact a loaded voltage of around 175+ is just what's needed.

 

[Marra]

Thank you. I was concerned when my transformer was reading 179 volts. Nearly good to go just waiting on some valve bases which are overdue.

 

[craigtone]

What unloaded secondary voltages are you guys getting with the R26-90's. Particularly the high voltage one.

I don't recall unloaded voltage but it works perfect for this PCB.

 

[Marra]

Thanks Craig.

Regarding first power up is it best to leave the valves out and confirm voltages? If so what voltages and where? Or is it simply a case of having everything plugged in lighting the blue touch paper and standing back? Light bulb tester in place of course.

 

[craigtone]

I always power up tube gear for the first time with a dim bulb tester and no tubes. Heater voltage is very important but B+ will be high since no load.

 

[Bigman80]

Any more interested parties for RD2 of the GB?

If we could get to 10, that would be enough to get them ordered

 

[Bigman80]

Current interest:

1: scobham - 1
2: sebmeb -1
3: ikir - 1
4: vanofmonks - 1
5: elnaf - 1
6: Bas Horneman - 1
7: kiran1103 - 1
8: milandks - 1

 

[CageyH]

Yes, go on then...

 

[sebmeb]

give it some time .....

 

[Bigman80]

Yes, go on then...

Good man,

Add yourself to the list!

 

[CageyH]

Current interest:

1: scobham - 1
2: sebmeb -1
3: ikir - 1
4: vanofmonks - 1
5: elnaf - 1
6: Bas Horneman - 1
7: kiran1103 - 1
8: milandks - 1
9: CageyH - 1

 

[968driver]

I also would like to order a PCB for the phono amplifier.
How do I proceed to order one?

 

[Marra]

Add your name to the list.

 

[968driver]

Maybe a stupid question, how do I ad my name to the list?