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Old 28th October 2012, 03:00 AM   #1131
Salas is offline Salas  Greece
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Quote:
Originally Posted by tubo View Post
Hi salas,

I can get one 5u4gb no problem. If I use it can I just follow your power supply scheme?
No, 5R4GB is OK too, I just asked because 5R4GY is popular, to make sure it was not a typo.
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Old 28th October 2012, 03:02 AM   #1132
tubo is offline tubo  Philippines
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Will use a regulator?
.

Yup! I'll be using A shunt voltage regulator kit, Which I can get from Kevin at k&k audio( saves me the trouble in sourcing parts).

Last edited by tubo; 28th October 2012 at 03:09 AM.
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Old 28th October 2012, 03:03 AM   #1133
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Originally Posted by Salas View Post
No, 5R4GB is OK too, I just asked because 5R4GY is popular, to make sure it was not a typo.
Yes I mean 5r4gy.
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Old 28th October 2012, 03:07 AM   #1134
Salas is offline Salas  Greece
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Quote:
Originally Posted by tubo View Post
.

Yup! I'll be using your sshv2. Which I can get from Kevin at k&k audio( saves me the trouble in sourcing parts).
I haven't authorized any Kevin at K&K audio for SSHV2. Have you got a link to it being offered?
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Old 28th October 2012, 03:12 AM   #1135
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Originally Posted by Salas View Post
I haven't authorized any Kevin at K&K audio for SSHV2. Have you got a link to it being offered?


I apologize for the mistake, I thought it was the same as your sshv2. It is at kankaudio.com under accessories. Again I apologize.
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Old 28th October 2012, 03:29 AM   #1136
Salas is offline Salas  Greece
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With Hammond 272HX and 5R4GY use that arrangement, set the reg for 300V out and use 7.5K anode load resistor. It has enough current limiting not to hammer the rectifier. If you don't have the budget for a choke use a 220R in its place. Use 5W resistors. Also a 220K 2W bleeder across C2. Avoid mercury rectifiers, they can be dangerous if they break.
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Old 28th October 2012, 03:33 AM   #1137
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If I do use a 5u4 do I need to change the anode load resistor?
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Old 28th October 2012, 03:36 AM   #1138
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Is there enough heatsink for the kandkaudio regulator in this application? At 2x bias current it will be shedding quite a bit of heat for the little ones posted in the web page.
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Old 28th October 2012, 03:42 AM   #1139
Salas is offline Salas  Greece
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Quote:
Originally Posted by tubo View Post
If I do use a 5u4 do I need to change the anode load resistor?
That would give you sufficient voltage for regulating at about 340V with 47R R1, but 5R4GY is a more open sounding tube in my opinion. But its more limpid for voltage loss. So 300V and 7.5K load does not make it worse and you can use 5R4GY.
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Old 28th October 2012, 03:48 AM   #1140
Salas is offline Salas  Greece
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Originally Posted by SGregory View Post
Is there enough heatsink for the kandkaudio regulator in this application? At 2x bias current it will be shedding quite a bit of heat for the little ones posted in the web page.
Looks like an unauthorized variation on SSHV1 with depletion mode CCS and on board sinks not enough for 6V6 line pre. The guy maybe uses my name on the board if I can see well from some silk screen edge, beyond mentioning it and linking my thread in his text. I will email him.
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