Four 6V6's versus two 6L6's?

[Mark]

Firstly, the amp is a D'Lite.

I have worked out the two Tungsol reissue 6L6 tubes that were in this amp aren't doing it any favours.

I have put a set of NOS GE nude base 6V6's into this amp and I preferred the sound of the Winged C 6L6's that I have been using in my Boogie/Bluesmaster.

To my ear the highs were more controlled, the mids were thicker and the bass sounded tighter.

I've heard good words about the JJ 6V6's , would four JJ's be a better option than the current new production 6L6 tubes available?

Thanks for your assistance.

[jaysg]

The JJ's aren't really 6V6's, so they're not necessarily as thick and chewy as normal ones. They're often described as being in between an EL-34 sound and that of the 6L6GC.

[jelle]

The JJ's aren't really 6V6's, so they're not necessarily as thick and chewy as normal ones. They're often described as being in between an EL-34 sound and that of the 6L6GC.

+1. With the powerrating of the original 6L6 tube.

[talbany]

Mark
A 4X6V Dumble style amp is very different than a 2X6L.. Apples and oranges..
The 4 6V version has a fast response a stout midrange cuts through the mix and when pushed sings like no other..It also has much greater headroom and is louder than you think w/450v on the plates and a quad of JJ's can keep up with a 100 watter..
The 2 6L version with the same iron has sweeter more scooped mids less headroom slower response and more bottom end and more in line with the D-Topology and typical sonic footprint of the Dumble type tone..

You can always build a 4 octal output section and swap them out for either or if you like..You can also add a 1/2 power switch to turn off 2 6v's for a 22 watter.. I know the primary's won't be perfect..(I've built many w/ Marshall 50w JCM Output iron and Bassman power)

Tony

[Mark]

Thanks for the Info. Nice looking build Tony.

[jelle]

Looks flipping great!

[angelodp]

Elvis White - nice.

[dreric]

I have a question regarding setting up and amp with 2 6L6 versus 4 6V6.

I have quite a few of the PTs used in late 70's 2 6L6 amps:

http://www.webphix.com/schematic%20heav ... tr_rev.pdf

I'd like to use them in a few 4 6V6 builds.

I've figured out that the the heater draw for 2 6L6 and 4 6V6 is the same (1.8ma).

What I don't understand is how that figure out the bias and plate ma and voltage requirements for 2 6l6 versus 4 6V6 and whether these tranformers can work with a 4 6V6 or even a 2 EL34 build.

Any help would be appreciated.

Eric

[heisthl]

deleted

[ToneMerc]

IWhat I don't understand is how that figure out the bias and plate ma and voltage requirements for 2 6l6 versus 4 6V6 and whether these tranformers can work with a 4 6V6 or even a 2 EL34 build.

Any help would be appreciated.

Eric

OT: Just about any 50W two tube 6l6/EL34 transformer will be good for 4 6V6's. My thoughts have always been that the range of 3k-4.4k would well work for a quad of 6V6's. I have a 50W 4.4k that one day I'll use for 4 6v6's.

Bias: I'm assuming that yours is a typical value bias supply and you will need your bias voltage to be a tad more positive. Thus, try changing your bias supply main resistor to around 470-560 ohms for starters. A good swing range would be about a 17-23mA.

TM