check for me these trannies please...

[massygt6]

Hi people!
I'm in the struggle between a 50W ODS and a 100w ODS...but my choice is towards
the big brother
In every amp I build I like to overdimensionate the Power Transformer, the benefits
in terms of dynamic, attack and endurance of the unit, are great in my opinion

Please check this specs for a 100W ODS:

Power TR:

360v-0-360v 500mA
3.15v-0-3.15v 8A (power tubes)
3.15v-0-3.15v 2A (preamp tubes)
12v-0 for relays
60v-0 for bias supply

OUTPUT TR:

AC core
RA-A: about 2k (better on the lower side or upper side???)
120w tolerance (core saturation is not my businness;-) )

sounds ok or there's something wrong?
thanks for your attention
Max

[Luthierwnc]

It sounds like it ought to work. Don't know who would carry it. On the plus side, you want high amperage capacity in these amps.

A lot of people would prefer a separate 12v trannie to isolate the switching from the main power supply. YMMV, Skip

[massygt6]

thanks man! going for a separate relay tranny

[Structo]

That PT is monstrous! 500mA!

On the OT not sure, but on my D'Lite 44 I have one with 8K for 6V6 and 4.4K for the 6L6's.
Mind you that this is a two power tube amp (44 watts) so I'm not sure what the specs are for four power tubes (four power tubes).

[massygt6]

That PT is monstrous! 500mA!

On the OT not sure, but on my D'Lite 44 I have one with 8K for 6V6 and 4.4K for the 6L6's.
Mind you that this is a two power tube amp (44 watts) so I'm not sure what the specs are for four power tubes (four power tubes).

You're right, its quite a beast, but I can assure you that the benefits are perceptible
For a 4x6L6/EL34 the Ra-a shoud be something around 2k, the fender twin replacemente is 2k, the plexy100 replacement is 1750k...
What about hammond transformers? they've made a "guitar series"...are they good?

[mlp-mx6]

OK, give it up! (grin)

What power xfmr is this?

[odourboy]

What about hammond transformers? they've made a "guitar series"...are they good?

I used their Twin replacement, the 290FX, in my last build. No complaints!