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Old 12-15-2012, 08:52 PM
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Cygnus X1 Cygnus X1 is offline
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Default Cygnus EL34 42 Watt Hawkings

Just finished this and couldn't wait to post something about it.
Every time I wired up the single ended Cygnus-7 with an EL34 it didn't sound very good.
Put this together based on the higher wattage push-pull version and it sounds amazing!
Guitar is a homemade LP Standard with Stephens Design proto VL4 and PAF Star.
(Not real high gain, vintage PAF designs).
Mics are AT3035 close and MXL V63M ambient.

Quick pic and dirty clip.

https://soundcloud.com/cygnus-1963/cyg-el34-dirt1



A fair amount of work to do still.
I kind of hacked together the bias with a jumble of resistors and caps.
Just didn't have the right values on hand.
Still have to finish the paint and cleaning up the wiring.
I haven't even taken measurements beyond the usual safety-startup items.

Just a quick dirty clip but the cleans are dynamic and full like the other Cygnus builds.
The mild to medium gain settings are good as well.
I thought the would be a bit more complex than the 6L6 or 6V6 versions,
and it is.
Less compressed and more "in your face".
Would make a great gigging amp to cut through the mix.
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Old 12-15-2012, 09:08 PM
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Nice, you are getting some sweet gain there. Sounds like the voltages are a little high maybe. Got a brittle bite that needs to be smoothed out a little.
Nice work as always.
Jon
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Old 12-16-2012, 03:39 AM
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Thanks Jon.
I had the mid and treb dialed up more than I normally would to satisfy the microphones.
Then I looked at my monitor EQ and realized it was scooped mid and level on the uppers.
Details suck!
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Old 12-30-2012, 06:59 PM
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Lots of clams in this clip, but out of the 9 I recorded this one holds the best examples of the tone.

Bear with it please:

https://soundcloud.com/cygnus-1963/cygel34mixed1mp3
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Old 01-28-2013, 07:54 AM
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Looks pretty nice. Quick question, do you calculate about what frequency in Hz the EQ knobs control?

I've always wondered what frequencies they control... I had a computer app a long time ago that I can't find anymore that had the hertz frequencies of the bass/middle/treble controls of several popular amps. It also displayed a chart as you adjusted them to show what the EQ was actually doing... it was really interesting.
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Old 01-31-2013, 05:44 PM
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Thanks LWS.
I've got to get this amp on the scope some more.
Voltages are where I want them, but frequencies are a little off the
pace of where I am used to.
As I said...they may be just fine in the mix.

Been crazy busy at work, and at home.
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