lite ii b PT spec

[mehfuzhoss]

hello,

i am new to amp building and in this forum. my question is, is hammond 290paz good for this amp. or what can be an upgrade from this as well!

Thanks

[geoff 1965]

hello,
yeah the specs on the paz are perfect,290-0-290 HT and a 3 amp filament supply covers you for the standard, lite 2b and superlite 18 watters.

[crgfrench]

Many folks like the Heyboers also. You can get the Heyboer PT and OT from GDS amps or from Mojotone ("British 18 Watt").

[mehfuzhoss]

ok so i have got the parts for the build. as per the layout it looks like i need a 3.15v tap for the heater wires for the 12ax7 and el84. since the 290paz doesn't have the 3.15v i will use the 6.3v to power all the tubes for this amp and wiring will be a little bit different than the layout. please advise if you have any suggestion for wiring the tubes.

thank you.

[mehfuzhoss]

Capt.JPG

this is the spec shown for the 290paz.

can i use the white and yellow of the secondary for the ez81?

Thanks.

[JMPGuitars]

can i use the white and yellow of the secondary for the ez81?

That's what they're for. You don't want to connect the rectifier anywhere else.

Thanks,
Josh

[mehfuzhoss]

awesome. that is what I was thinking. wanted to verify with experts like you.

The heater wires for rest of the tubes - 6.3v will connect to v4,v3,v2 and v1's pin 4 and 0v will be on the star ground. am i correct on this?

Thank you.

[JMPGuitars]

awesome. that is what I was thinking. wanted to verify with experts like you.

The heater wires for rest of the tubes - 6.3v will connect to v4,v3,v2 and v1's pin 4 and 0v will be on the star ground. am i correct on this?

Thank you.

No, only specific things go to the star ground. I don't know what amp you're building or working on, but take a look at this layout: files/JMPGuitars_18_Watt_Lite_2b_Layout.pdf

That shows the correct way to ground things, and the correct way to run all the heaters. What circuit are you working on?

Thanks,
Josh