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 Post subject: sIII with EL84 & 6V6
PostPosted: Sun Oct 29, 2006 9:24 am 
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Holy Ghost
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Joined: Sun Mar 13, 2005 4:10 pm
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Location: Brighton, Canada
For a week now, we have been playing a new variation of the sIII which has both EL84 and 6V6. We call it the sIII V6 and it is good! Clips soon I hope!

The power tubes are foot switchable. Basically sounds like two amps in one package. Then we added a foot switchable serious boost/gain as well which is practically like a pedal so it's like more amps in one. Jump the channels ... the mind boggles.

Rob Baker from the Tragically Hip (http://www.thehip.com/) auditioned the prototype and will be taking the first one. We call it the Hip Head!Check out:

viewtopic.php?t=695&highlight=coco

and..

viewtopic.php?t=641&postdays=0&postorder=asc&start=40


and...

viewtopic.php?t=719

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 Post subject:
PostPosted: Tue Nov 07, 2006 1:57 pm 
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Joined: Mon Mar 14, 2005 9:02 pm
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Location: Brampton
You will find the clippage here. Fine amp. It is like a Deluxe and an 18 watt grafted together.


viewtopic.php?t=734


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 Post subject:
PostPosted: Tue Nov 14, 2006 9:50 pm 
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Location: Temecula, California
The clips sound great. Did you ever solve the popping noise when switching the power channels? Mine does that but, only when switching back to the EL84's. They are on the normal position of the relay. I tried putting a small cap on the footswitch but, no differance.


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 Post subject:
PostPosted: Tue Nov 14, 2006 11:14 pm 
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Holy Ghost
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We still get a little pop when switching. Cant hear it when playing, really only when not playing. Biggest problem was the boost pedal which was solved by using two vactrols.

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 Post subject:
PostPosted: Thu Nov 16, 2006 9:59 pm 
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Location: Temecula, California
Stephen,
Is it possible to use two vactrols to switch the power tubes? Perhaps use a stereo cord to the foot switch and send power to one or the other according to the switch position? I guess I'm asking if the vactrol will handle the current that is on the tube circuit.


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 Post subject:
PostPosted: Fri Nov 17, 2006 7:30 am 
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Holy Ghost
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Photocells are primarily used for signal control since the maximum allowable power dissipation is low. Current should be kept below 10 mA.

Plus, they do not have a low enough 'On' resistance to be used in series with a cathode resistor.

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 Post subject:
PostPosted: Fri Nov 17, 2006 12:26 pm 
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Location: Vancouver B.C. Canada
Hi Stephen,
Will the SIIIv6 be offered as a kit?
stew


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 Post subject:
PostPosted: Sat Nov 18, 2006 8:35 am 
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Holy Ghost
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Stoo,

Yes, the sIII v6 is available as a kit now. New boards are ready.
Email me if you are interested. We still need to post the details.

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 Post subject:
PostPosted: Tue Dec 05, 2006 3:27 pm 
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I have the RoboAmp in QA right now and I am very happy with it. The 6V6 tone is quiet different from the EL84 tone. More bass and warmer clean tones.

I have tried the amp with A pair of old celestions (awesome) and a Altec in a closed cab (crazy train). If it lives through the burn in period (shouldn't be a prolbem) then tonight I will hook it up to a pair of alnico tone tubbies and see what happens. Clips to follow.

LB


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 Post subject:
PostPosted: Wed Dec 06, 2006 7:06 pm 
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I'll try again tonight.


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