Thoughts on a 5E3 Hybrid

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Re: Thoughts on a 5E3 Hybrid

Postby JMPGuitars » Wed 11/20/19 10:06 am

Ampman5150 wrote:
Wed 11/20/19 6:58 am
No luck.. It try's to load but then I get the yellow triangle error saying 'invalid filename'.. obviously this is on my end.

This is my scenario and my basic question:
I have a 5E3 Deluxe chassis, cab, speaker, and transformer set.
I want to match up a 4 input V1 pre-amp from the 5E3 to a LTP of a 'Marshall type' PI. I would like to retain the separate volume controls of the 2 channels with the single tone knob (Keeping the stock look of the chassis.)
My idea was to build a 'sleeper'...
Something that 'looks' like a tweed deluxe but with a bunch more snarl.
I've done the Robinette mods, the Caldwell mods, and a bunch more mods but haven't been able to get that snort out of it yet.
Modifying the chassis is a no go as I have not yet been able to find one that the nickel wont peel off if I drill a hole in it.
I super appreciate all your help guys.. maybe there is a reason I haven't found what I'm looking for.
Cheers
Oh, that's easy then. Rename the file with nothing weird in it. Name it something like 5e3-schematic.pdf.

I would keep it simple and build a Lite 2b. You can use the 5E3 tonestack if you want. You could do something fun with the inputs. High/low for both inputs, and maybe one side is single triode, other side is parallel triode. Here's a nice explanation: viewtopic.php?p=234730#p234730
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Re: Thoughts on a 5E3 Hybrid

Postby crgfrench » Wed 11/20/19 11:41 am

geoff 1965 wrote:
Tue 11/19/19 6:41 pm
i found this schematic with half 5e3 input into a LTP 6V6 power amp. .
You could also do the full blown 4 input version of the 5E3 pre section.
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Re: Thoughts on a 5E3 Hybrid

Postby Ampman5150 » Wed 11/20/19 11:57 am

JMPGuitars wrote:
Wed 11/20/19 10:06 am
Ampman5150 wrote:
Wed 11/20/19 6:58 am
No luck.. It try's to load but then I get the yellow triangle error saying 'invalid filename'.. obviously this is on my end.

This is my scenario and my basic question:
I have a 5E3 Deluxe chassis, cab, speaker, and transformer set.
I want to match up a 4 input V1 pre-amp from the 5E3 to a LTP of a 'Marshall type' PI. I would like to retain the separate volume controls of the 2 channels with the single tone knob (Keeping the stock look of the chassis.)
My idea was to build a 'sleeper'...
Something that 'looks' like a tweed deluxe but with a bunch more snarl.
I've done the Robinette mods, the Caldwell mods, and a bunch more mods but haven't been able to get that snort out of it yet.
Modifying the chassis is a no go as I have not yet been able to find one that the nickel wont peel off if I drill a hole in it.
I super appreciate all your help guys.. maybe there is a reason I haven't found what I'm looking for.
Cheers
Oh, that's easy then. Rename the file with nothing weird in it. Name it something like 5e3-schematic.pdf.

I would keep it simple and build a Lite 2b. You can use the 5E3 tonestack if you want. You could do something fun with the inputs. High/low for both inputs, and maybe one side is single triode, other side is parallel triode. Here's a nice explanation: viewtopic.php?p=234730#p234730
Brillant..
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Re: Thoughts on a 5E3 Hybrid

Postby geoff 1965 » Wed 11/20/19 12:38 pm

that is basically what Josh suggested,you're problem here is if you want the 4 inputs and the 18W LTP you will have to sacrifice the second stage of the preamp without modifying the chassis for the extra tube.
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Re: Thoughts on a 5E3 Hybrid

Postby crgfrench » Wed 11/20/19 1:23 pm

Ampman5150 wrote:
Wed 11/20/19 6:58 am
This is my scenario and my basic question:
I have a 5E3 Deluxe chassis, cab, speaker, and transformer set.
I want to match up a 4 input V1 pre-amp from the 5E3 to a LTP of a 'Marshall type' PI. I would like to retain the separate volume controls of the 2 channels with the single tone knob (Keeping the stock look of the chassis.)
My idea was to build a 'sleeper'...
Something that 'looks' like a tweed deluxe but with a bunch more snarl.
I've done the Robinette mods, the Caldwell mods, and a bunch more mods but haven't been able to get that snort out of it yet.
Modifying the chassis is a no go as I have not yet been able to find one that the nickel wont peel off if I drill a hole in it...

I like this project. It's very similar to my thinking when I developed the Fullerwell, which has 18W snarl. The main differences I see are:
1) you want the LTP whereas the Fullerwell uses cathodyne
2) you're using the 5E3 trannies whereas the Fullerwell uses 18W Heyboers
3) you're (presumably) using 6V6s whereas the Fullerwell uses EL84s
4) you're (presumably) using a 5Y3 whereas the Fullerwell used an EZ81

Only thinking about this briefly, You could get more snarl by reconsidering your choices in #1 and #2 above. Viz #1, going to cathodyne will give you an extra gain stage due to the extra triode available in the PI tube and this will add snarl, especially if you're using a 12AX7 for the PI tube. Viz. #2, you want the right iron if you're looking for a marshall sound vs the fender sound. You can go either way with #3 or #4 and if you stick with the 5Y3 you'll get a bit more sag than the EZ81 provides. You can mod #3 to use noval sockets for EL84s without altering the chassis by using chassis adapter plates Mojo & others sell.

...Oh, and use a 12AX7 in the first preamp tube rather than the 12AY7. That will add snarl.
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Re: Thoughts on a 5E3 Hybrid

Postby crgfrench » Wed 11/20/19 1:36 pm

My current "Hellhound" build is a sleeper like you describe; it's an 18W Fullerwell using 6V6s in a tweed 5E3 cab & chassis.
20191002_213332.jpg
20191002_212633.jpg
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Re: Thoughts on a 5E3 Hybrid

Postby JMPGuitars » Wed 11/20/19 1:56 pm

Ampman5150 wrote:
Wed 11/20/19 11:57 am
Brillant..
If you want to keep it simple like that, you certainly can. You can stick with the tubes you have if you want, or you can use socket adapters to change to noval sockets as per that schematic. That's entirely up to you, and the sound you're after.

Personally, if I wanted to make something funky in there, I would use this schematic for the 18watt portion: storage/18wattLite2b.gif

Then I would do your hi/lo triode half inputs like the 5E3, and use a push-pull pot to disable 1 channel and have the input tube used in parallel instead of just half. That would give you a lot of fun options.

I would also suggest experimenting between the AY7 and AX7 input tube and see what you like best.

Also, you will want to make sure you bias the output tubes correctly. If you use EL84s, a pair should show 12V across the cathode bias resistor. 125R (in the schematic you shared) will almost certainly be too low. I usually use around 180R, but YMMV.

Thanks,
Josh
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