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Woo6 Topology

post #1 of 9
11/28/09 at 3:11pm
Thread Starter 
.
I've searched and read all the threads. But this amp is still a bit of a mystery.
The DNA Sonnet webpage is very upfront about the key factors in an SET OPT amp.

Does the Woo6 take the output from the cathode or the anode and is there a capacitor on the output before the OPT?


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post #2 of 9
11/28/09 at 3:35pm
it comes from the cathode... hence a cathode follower circuit. it's very minimal design
and doesn't use a cap before the opt... as far as i can tell.* ask jack for the specifics.
though he can be kinda slow with the emails these days.

*my bad, there is one if you're talking about the cathode caps, before the opt.
it's hard to tell from pics but you'll see it when you take it apart.
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post #3 of 9
11/28/09 at 3:40pm
Thread Starter 
That's too bad, at least on paper the DNA amp should sound better since the output is from the plate, but there are many other variables. Would be an interesting comparison Woo6SE vs DNA Sonnett.
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post #4 of 9
11/28/09 at 3:48pm
yes, i would think there are many other variables, such as the quality of the opt and
overall implementations. the woo6se is directly coupled and provides better bass quality
than the wa6, among other things
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post #5 of 9
11/28/09 at 3:56pm
interestingly, i believe the wa6se uses the plates for the output path... it goes from
the anode plates to the opt to the hp jacks, nothing in between.

or not... i may've overshot that... i'll take a look when i have the chance to confirm.
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post #6 of 9
11/28/09 at 4:06pm
Thread Starter 
Quote:
Originally Posted by takezo View Post
interestingly, i believe the wa6se uses the plates for the output path... it goes from
the anode plates to the opt to the hp jacks, nothing in between.

or not... i may've overshot that... i'll take a look when i have the chance to confirm.

Let us know, I have experiemented with many designs over the years and have always preferred the sound with the output from the anode when possible.
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post #7 of 9
11/28/09 at 4:24pm
just from eyeballing it sure looks like the anode plate is connected to the B+ and the
opt.... i'll try to confirm with jack.
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post #8 of 9
11/30/09 at 3:08pm
jack confirmed that the wa6 uses the cathode for output and the wa6SE uses the plate
for output. it should be simple enough to change the topology to fit your needs.
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post #9 of 9
11/30/09 at 3:54pm
Sure, you could change the 6 to the 6SE pretty easy. I will change mine over one of these days just no time right now. I would be interesting to hear the difference but I have to admit that my very modified 6 is extremely open sounding with solid power though not overblown bass. I even use it with my JH13 Pros.
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