Bluesmaster PT

[Vertigo]

When building a 6l6 Bluesmaster, what primary voltage should be used for the PT? I'd like to try to snag a ClassicTone before they're gone. A schematic I found lists a 320V primary but that schematic doesn't match Tony's layout and I'm skeptical. I can't seem to find reliable information on the Magic Parts PT in the layout but I did see somewhere in another forum that it's 345V.

thank you

[martin manning]

Heyboer makes something close to TF-130, but better. See: https://ampgarage.com/forum/viewtopic.p ... 54#p149554 Scroll down a bit for the schematic diagram. They can make one for you if you give them the part number.

[professormudd]

My HRM Bluesmaster build has a classic tone 40-18029.

[Vertigo]

My HRM Bluesmaster build has a classic tone 40-18029.

interesting, which primary did you use?

[professormudd]

My HRM Bluesmaster build has a classic tone 40-18029.

interesting, which primary did you use?

First I tried the red 710v primary, but plate voltage was sitting at over 505v without a load. So on the advice of the kind folks here I switched to the red/white 610v, and got the plate voltage down to 405v. It works great, though I have no basis for comparison.

[norburybrook]

My HRM Bluesmaster build has a classic tone 40-18029.

interesting, which primary did you use?

First I tried the red 710v primary, but plate voltage was sitting at over 505v without a load. So on the advice of the kind folks here I switched to the red/white 610v, and got the plate voltage down to 405v. It works great, though I have no basis for comparison.

505v without a load would seem correct though no? with a load that will drop. My bluesmaster is running at 500v with a load sounds great

405v seems a bit low for an ODS.



M

[professormudd]

interesting, which primary did you use?

First I tried the red 710v primary, but plate voltage was sitting at over 505v without a load. So on the advice of the kind folks here I switched to the red/white 610v, and got the plate voltage down to 405v. It works great, though I have no basis for comparison.

505v without a load would seem correct though no? with a load that will drop. My bluesmaster is running at 500v with a load sounds great

405v seems a bit low for an ODS.



M

This was guidance given from xtian in the technical discussion... Maybe one day I'll switch it back and see how she runs. But as of now it's good. I neglected to mention, and I'm sure it makes a difference, but mines a 44 watt.

[norburybrook]

First I tried the red 710v primary, but plate voltage was sitting at over 505v without a load. So on the advice of the kind folks here I switched to the red/white 610v, and got the plate voltage down to 405v. It works great, though I have no basis for comparison.

505v without a load would seem correct though no? with a load that will drop. My bluesmaster is running at 500v with a load sounds great

405v seems a bit low for an ODS.



M

This was guidance given from xtian in the technical discussion... Maybe one day I'll switch it back and see how she runs. But as of now it's good. I neglected to mention, and I'm sure it makes a difference, but mines a 44 watt.

Ah not 6L6'/El34s then? that makes a big difference

Sorry I thought it was regular amp.

M

[professormudd]

Ah not 6L6'/El34s then? that makes a big difference

Sorry I thought it was regular amp.

M

I find that EL34s give my amps an English accent.

Mine runs 2 6L6

[norburybrook]

Ah not 6L6'/El34s then? that makes a big difference

Sorry I thought it was regular amp.

M

I find that EL34s give my amps an English accent.

Mine runs 2 6L6

LOL.....

well 6L6's are quite happy with up 500vDC I've found. The amps I've made from old Peavey Transformers all run around 500vDc on the plates.

give it a go, you might like it

M