6L6 D'lite power?

[Baltar]

Hi all,

i'm thinking about a D'lite build -
while looking for trannies, i've seen that brown note has a ..
'22/33, which does 33Watts using 6L6 and a
'44 which is rated at 44 watts using 6L6
Both PTs have the same HV voltage and i do only know the
schematics, which are around here.

From where comes the difference?
Is there a difference in voltage drop resistors or such?

cheers

[Sonny ReVerb]

Part of the difference is the output trannie, I believe. The original D-lite was designed around a Deluxe type OT, which would limit your output with 6L6s (33W?), whereas the 44W version is designed for the 6L6s with an appropriately larger OT.

[Structo]

Yes the amp was originally designed for 6V6 use.

If you plan on running 6L6 then get the 44 watt one because it now comes with a much bigger OT.

Also, you should buy the mod kit for the components then build it according to the Tweaked layout which is a culmination of things suggested here.
The PT is fine and the voltage can be adjusted through the dropping string of resistors to get to the sweet spot.

I have one and it is great.

Here is the layout. Be aware that the Master should be labeled 1M.

[Baltar]

Hi again,

great - thanks guys for replying.

@Sonny ReVerb: Do you mean the drop from 44 to 33 watts is due
to OT impedance mismatch?

@Structo: the brown note kits indeed look very nice, but shipping
overseas would be expensive. i anyway like very much to collect the
parts needed for my builds. Thanks for the tuning kit -hint.

I'm thinking about using a Mercury (BF Super Reverb) OT, but don't
have a clue if the 40W toneclone (FBFS-O40M) would fit better, or
the 60w axiom (FSUP-60-O). any recommendations?
I'd like to tune it for awesome cleans primary.

cheers

[Sonny ReVerb]

Sonny ReVerb: Do you mean the drop from 44 to 33 watts is due to OT impedance mismatch?

It's not an impedance mismatch, but the size of the OT that limits the output. An OT designed to deliver 22W with 6V6s will put out more power with 6L6s (~33W?), but not their full rated output. To get maximum output from the 6L6s (44W) you have to increase the size of the windings/core. Some folks like the sound of an undersized trannie, however. It was Leo approved, after all, but Dumble probably not so much

[Baltar]

thanks

[Baltar]

hi all,

i decided to build it and like the 2x6l6 ( but 4 noval sockets for alternative
4x6v6 useage) variant.

would this transformer be ok? ...

http://www.tube-town.net/ttstore/produc ... Power.html

cheers

[bluesfendermanblues]

hi all,

i decided to build it and like the 2x6l6 ( but 4 noval sockets for alternative
4x6v6 useage) variant.

would this transformer be ok? ...

http://www.tube-town.net/ttstore/produc ... Power.html

cheers

No, its not powerfull enough - 300-0-300 0,15 A

I bought this one http://www.tube-town.net/ttstore/produc ... 25P5D.html
for my Ceriatone OTS 50. Its a classic for a 50w fender type amp.

Which delivers 330-0-330 voltage, which will be round 460VDC in the amp.

[Baltar]

hi bluesfendermanblues,

i thought about that torodial posted, due to it wouldn't exceed the 6V6
limits too much.
6L6 wouldn't loose to much power due to the smaller b+ and i'd regulate
the preamps voltage by lowering the voltage drop resistors between the
filter caps.
What do you think? still a no-go?

on the current side it should be fine. the fender tranny is specd on 0,14A
and that one does 0,15

cheers

[Structo]

Here is the Heyboer PT that came with my D'Lite 44.

[Baltar]

thanks for posting. wow - brownnote wants to make sure those live forever.
if i am right, 300mA on HV is what fender used for the blackface twin

[Tavda3172]

It's not an impedance mismatch, but the size of the OT that limits the output.

It is ultimately the OT impedance that will limit the output power. When you mismatch the impedances you are usually doing it to reflect a lower impedance to the tubes which is why you get more output power if you put in a tube that can take advantage of this situation. The physical size of the transformer does not directly effect the output power but can/will effect the bandwidth, hence bigger iron usually sounds bigger.

[bluesfendermanblues]

Exactly, these amps wants to see enough and stable power plus a nice big OT.
The D sound stems primarily from the preamp OD and NOT overdriving the poweramp like you would in a Fender tweed or marshall the get the sound. So do what you can to get a stable poweramp.

[Baltar]

thanks fellows, appreciate it

[talbany]

Just so you know...If you are going with 2 6L's I recommend 2 types one of coarse would be Bassman off the shelf Heybour or MM is the one to go with in My opinion.. If you want the output section to compress a bit along with a bit of OP tube saturation you can go with MM 40w Vibroverb/ Pro is also a good choice.. Keep in mind it won't be as punchey with less headroom than the Bassman...A 22w OPT w/6L's or 5881's might work for a while but will eventually start to sound nasty then go...POP!!


Tony VVT