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Old 3rd February 2014, 12:17 PM   #21
Mikey R is offline Mikey R  United Kingdom
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Quote:
Originally Posted by kuroguy View Post
I managed an hour in the shop today so I worked on the enclosure. It's 4 sides held together with pocket screws (from the outside). Screwing from the outside will allow me to round over the corners without hitting the screws. The screws hold everything in place while the glue makes it permanent. Next I'll sand the enclosure, round over the edges, and cover it with tolex.
Wow, I cant believe how quick this came together! Awesome work!
Click the image to open in full size.

With the live parts unenclosed in a full chassis pointing downwards, wont you risk touching them if you reach inside of the open backed cab?

Last edited by Mikey R; 3rd February 2014 at 12:20 PM.
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Old 3rd February 2014, 12:36 PM   #22
kuroguy is offline kuroguy  United States
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Neither can I. I currently have about 8 hours in it. I need to build the amplifier and that should take no more than 3 evenings, and likely just 2 evenings so I should get this one done in about a total of 12 hours. Not too shabby.
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Old 3rd February 2014, 01:08 PM   #23
kuroguy is offline kuroguy  United States
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...there will be a bottom on the amplifier carrier. you won't be able to shock or burn yourself. there will also be air vents to allow it to dissipate heat.
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Old 4th February 2014, 10:35 PM   #24
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Nice job!

Looks like you will be using EL84's or some other noval socket power tube?
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Old 4th February 2014, 10:53 PM   #25
kuroguy is offline kuroguy  United States
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6av6 and 6aq5. A tube compliment for this amp costs $6.
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Old 5th February 2014, 12:18 AM   #26
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6AQ5 is a cool tube and good for about 10 watts a pair. Are you going to use a 6V6 output transformer? Also what voltage were you looking to run them at?
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Old 5th February 2014, 12:28 AM   #27
kuroguy is offline kuroguy  United States
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doing it single ended at about 250 volts with 3 stages of amplification, a cathode follower, and a tone stack (but you knew that from the pictures).should get about 5 watts which is perfect for my living room.
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Old 5th February 2014, 12:38 AM   #28
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"which is perfect for my living room"

I hear that! I just rearranged my Deluxe Reverb into putting out about 4 watts so I could still turn it up into the "sweet spot" and have it be tolerable for practice volume. I still think i have to change out the current speaker (103db sensitivity) with a jensen P12-Q I have laying around to cut back the volume some more but I want to try it with a band tomorrow night first.
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Old 5th February 2014, 12:21 PM   #29
Mikey R is offline Mikey R  United Kingdom
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Quote:
Originally Posted by famousmockingbird View Post
"which is perfect for my living room"

I hear that! I just rearranged my Deluxe Reverb into putting out about 4 watts so I could still turn it up into the "sweet spot" and have it be tolerable for practice volume. I still think i have to change out the current speaker (103db sensitivity) with a jensen P12-Q I have laying around to cut back the volume some more but I want to try it with a band tomorrow night first.
It might be cheaper to just build an attenuator network. I was thinking of building one for my Ashdown LB30 but never got round to it.

Last edited by Mikey R; 5th February 2014 at 12:28 PM.
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Old 5th February 2014, 08:47 PM   #30
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"It might be cheaper to just build an attenuator network. I was thinking of building one for my Ashdown LB30 but never got round to it. "


What I did was free and easy :-) I just moved two wires around to run in single ended mode. I used the whole primary which doubled impedance seen by the 6V6, there is only one secondary tap and I don't have any 4 ohm speakers so I put in a 6K6 because it's likes larger loads (11,000 according to the datasheet, the 6V6 says 8,000). I might try using a 6V6 with half the primary with a CCS on the other half to offset Standing DC in effect reducing core saturation. But I like an underrated output transformer sound when driven hard so I don't know if it's worth changing (it sounds pretty killer now). Oh well can't hurt to try and post my findings.

I have a thread on it here so check it out if interested. I don't want to hijack kuroguy's thread.
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