Tremolo TMB SE build!!!
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Tremolo TMB SE build!!!
Hiya!
I’ve been busy lately building a single ended 6L6GC Tremolo TMB. So I finished the amp today. I had a reasonably loud hum that was caused by low filtering, which was the 2x 32uf can cap. When I add 50uf to the 1st cap section the hum is extremely reduced… so I will tweak on that part some in the next moments I will work on it.
Next job is a PCB reverb with LND150 mosfets.. I reserved room for that as you can see.
Soundclips upcoming!!
I’ve been busy lately building a single ended 6L6GC Tremolo TMB. So I finished the amp today. I had a reasonably loud hum that was caused by low filtering, which was the 2x 32uf can cap. When I add 50uf to the 1st cap section the hum is extremely reduced… so I will tweak on that part some in the next moments I will work on it.
Next job is a PCB reverb with LND150 mosfets.. I reserved room for that as you can see.
Soundclips upcoming!!
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Re: Tremolo TMB SE build!!!
Well.. here's the schematic as the amp is built now.
I wonder though... I thought it would have like 10 watts, but I think it's way less. Sounds great, but I wonder if a PI circuit (adapted for SE) will give more volume?
I wonder though... I thought it would have like 10 watts, but I think it's way less. Sounds great, but I wonder if a PI circuit (adapted for SE) will give more volume?
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Re: Tremolo TMB SE build!!!
There's no point in a PI, but if you want more gain, you could add another gain stage. Though that won't necessarily do anything for your overall volume.
Did you calculate the dissipation? I don't see enough voltages listed in your schematic.
Did you calculate the dissipation? I don't see enough voltages listed in your schematic.
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Re: Tremolo TMB SE build!!!
I’m not necessarily sure I want more volume.. it is a nice home level volume. Just wondering though.JMPGuitars wrote: ↑Fri 02/17/23 11:53 amThere's no point in a PI, but if you want more gain, you could add another gain stage. Though that won't necessarily do anything for your overall volume.
Did you calculate the dissipation? I don't see enough voltages listed in your schematic.
Dissipation is good. It’s a 6L6GC 30W: Va 365V Vk 22.8V with a 270R 10W Rk/ 1000uf 50V cap
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Re: Tremolo TMB SE build!!!
I saw Barry at ampmaker has a switch in his 18w to make it single ended which is neat. Interested to see how you get on with the LND verb.
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Re: Tremolo TMB SE build!!!
Me too
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Re: Tremolo TMB SE build!!!
re. your schematic, is that drawn correctly? Where is the power tube grid reference? You've eliminated the 1M grid leak and have a cap (0.0047uF) blocking a path to ground through the volume pot. I'd move the bright cap there between the treble pot and volume pot.
Don't ask me how I spotted this .
Don't ask me how I spotted this .
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Re: Tremolo TMB SE build!!!
How did you spot this?Pressed_Rat wrote: ↑Mon 02/27/23 5:11 amre. your schematic, is that drawn correctly? Where is the power tube grid reference? You've eliminated the 1M grid leak and have a cap (0.0047uF) blocking a path to ground through the volume pot. I'd move the bright cap there between the treble pot and volume pot.
Don't ask me how I spotted this .
You’re absolutely right though. I first had the resistor undefined on the schematic to tweak where it should land in value. But since lifting it from ground really made no difference I didn’t see the point in keeping it… accidentally resulting in no grid reference at all. Nice catch!
Although I’m not keeping the SE character I’m afraid. It’s useless to me… and honestly merely an experiment
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Re: Tremolo TMB SE build!!!
What didn't you like about it? Guess you're not adding the reverb then...
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Re: Tremolo TMB SE build!!!
The reverb is built in. But it’s pretty generic sounding. The volume is too low to be useable… nah… I know how good this amp gets, and this is nowhere near
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Re: Tremolo TMB SE build!!!
Ok after tweaking the reverb in sequence of the other changes I unfortunately have to say it ruined a or some components in the reverb circuit.
Nevertheless the amp sounds great sans reverb, with a decent volume too.
But I don’t know when I can deliver a sound clip. My son had a severe snowboarding accident last weekend and lies in a hospital bed next to my work shop
Nevertheless the amp sounds great sans reverb, with a decent volume too.
But I don’t know when I can deliver a sound clip. My son had a severe snowboarding accident last weekend and lies in a hospital bed next to my work shop
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Re: Tremolo TMB SE build!!!
Yikes! I hope he has a fast and full recovery. I'm sure your loud guitar playing will be soothing to him.
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Re: Tremolo TMB SE build!!!
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Re: Tremolo TMB SE build!!!
Sounds great as usual. No criticism intended but for me your playing/ amps mostly sound better without the reverb. Want to work out an SE mod for my 36w if I ever get it working properly. Very sorry about your son, must be very stressful.
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Re: Tremolo TMB SE build!!!
Sounds great! Nice choice not giving up on it.
I'm eventually going to do an EL34 SE version. I might do it with a F* style reverb circuit since I'll have the space.
I'm eventually going to do an EL34 SE version. I might do it with a F* style reverb circuit since I'll have the space.
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Re: Tremolo TMB SE build!!!
Might beat ya to itJMPGuitars wrote: ↑Sat 03/04/23 3:11 pmSounds great! Nice choice not giving up on it.
I'm eventually going to do an EL34 SE version. I might do it with a F* style reverb circuit since I'll have the space.
Anyway… this EL34 stays in it. Much better than the 6L6
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Re: Tremolo TMB SE build!!!
You're welcome.Bieworm wrote: ↑Sat 03/04/23 3:34 pmMight beat ya to itJMPGuitars wrote: ↑Sat 03/04/23 3:11 pmSounds great! Nice choice not giving up on it.
I'm eventually going to do an EL34 SE version. I might do it with a F* style reverb circuit since I'll have the space.
Anyway… this EL34 stays in it. Much better than the 6L6
...do it! If I like it, I'll build it also and make some official docs for it.
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Re: Tremolo TMB SE build!!!
I’ve built in a full blackface reverb. I think it sounds good, but it’s late to try the amp on decent volume. I hear a nasty buzz… but I will address that later…
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Re: Tremolo TMB SE build!!!
Here’s a clip with the BF reverb. This is soooo nice… less drive on this tele though.. but you get the idea
https://youtu.be/GTJ8-E9c5I4
https://youtu.be/GTJ8-E9c5I4
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Re: Tremolo TMB SE build!!!
I dunno what it is, but that tele has a poorly defined low end. How are the pickup heights?Bieworm wrote: ↑Mon 03/06/23 3:27 pmHere’s a clip with the BF reverb. This is soooo nice… less drive on this tele though.. but you get the idea
https://youtu.be/GTJ8-E9c5I4
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