Tweedle D build in progress - looking for suggestions
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Tweedle D build in progress - looking for suggestions
Hi Folks,chassis is is all assembled, I got my board all drilled out and loaded it with all vintage 1W NOS resistors. I have some NOS mustard caps but I am not sure this is the circuit to use them in.... I am trying to decide on coupling caps ..choices are NOS mullard mustards, Orange drops 715/716, Mallory 150's or SOZO's. opinions?
Tubedepot is currently sold out of F&T 30uf-500V axial caps. worth waiting for the right part or you think I could get away with 2x 47uf and 2x 22uf ?
I got all these ideas to implement into the small 5e3 chassis, i am way ahead of myself....I was thinking of using the ground switch as a diode/tube rectification switch for alittle more modern tones and perhaps even adding a dumble fixed tone stack after the first gain stage, before the volume control for that fat bouncy clean... crazy idea, anyone done this before?
Tubedepot is currently sold out of F&T 30uf-500V axial caps. worth waiting for the right part or you think I could get away with 2x 47uf and 2x 22uf ?
I got all these ideas to implement into the small 5e3 chassis, i am way ahead of myself....I was thinking of using the ground switch as a diode/tube rectification switch for alittle more modern tones and perhaps even adding a dumble fixed tone stack after the first gain stage, before the volume control for that fat bouncy clean... crazy idea, anyone done this before?
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Re: Tweedle D build in progress - looking for suggestions
I just built a deluxe and used kemet 32uF caps from mouser.com, they worked great, but ymmv as for the coupling caps, I think the 715P are the 'norm' but I'm not an expert, it may be some of the other poly types?
I used all 715P on mine, but they don't match the exact values in some cases, example, the schematic said to use a .005 or .05 I don't recall which, but I could only find .0047 or .0056, so I think I used the .0047 (ignore one zero for whichever it is there lol). effectively, though, to me, the amp I built sounds outstanding!
~Phil
I used all 715P on mine, but they don't match the exact values in some cases, example, the schematic said to use a .005 or .05 I don't recall which, but I could only find .0047 or .0056, so I think I used the .0047 (ignore one zero for whichever it is there lol). effectively, though, to me, the amp I built sounds outstanding!
~Phil
tUber Nerd!
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Re: Tweedle D build in progress - looking for suggestions
I know its super subjective which coupling caps are used. I reg use Xicon coupling caps and have had no complaints. I forgot about radial filter caps. way cheaper and I can get finished soonerpompeiisneaks wrote: ↑Wed Dec 27, 2017 5:59 pm I just built a deluxe and used kemet 32uF caps from mouser.com, they worked great, but ymmv as for the coupling caps, I think the 715P are the 'norm' but I'm not an expert, it may be some of the other poly types?
I used all 715P on mine, but they don't match the exact values in some cases, example, the schematic said to use a .005 or .05 I don't recall which, but I could only find .0047 or .0056, so I think I used the .0047 (ignore one zero for whichever it is there lol). effectively, though, to me, the amp I built sounds outstanding!
~Phil
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Re: Tweedle D build in progress - looking for suggestions
pics are coming.. I decided I didn't want to deal with the voltage fluctuations and ensuring the bias was correct with a diode/tube rectification switch. I wired the ground switch to the HV Centertap (not that I will use it anyways). used a few different coupling caps, NOS Panasonic polyester caps for the plate couplers and then Mallory 150s for the phase inverter. boards installed, should have fired up by the weekend I used a section of some weird 50's eyelet material board. Seems like fibers laid in some material. works good, got a bunch of it from a friends grandpa. tough as hell and looks the part of being vintage.
Re: Tweedle D build in progress - looking for suggestions
I hope it's not conductive.I used a section of some weird 50's eyelet material board.
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Re: Tweedle D build in progress - looking for suggestions
All I got left before testing is the heater wiring and PT Primary wiring. The Linen phenolic board is thin, prob a 1/16th of an inch but tough as all hell. I use a tile saw or snips to cut it
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Re: Tweedle D build in progress - looking for suggestions
Nice build.
The one thing consistent in all dumble builds is his use of 6PS orange drops. They are a huge part of the sound.
The one thing consistent in all dumble builds is his use of 6PS orange drops. They are a huge part of the sound.
Eric
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
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- pompeiisneaks
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Re: Tweedle D build in progress - looking for suggestions
I built mine with 715P or 716P and love the sound, but maybe I'm nuts
~Phil
~Phil
tUber Nerd!
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Re: Tweedle D build in progress - looking for suggestions
I specifically used polyester caps, different then 6PS specs but only a handful of us will even noticepompeiisneaks wrote: ↑Thu Jan 04, 2018 8:29 pm I built mine with 715P or 716P and love the sound, but maybe I'm nuts
~Phil
Re: Tweedle D build in progress - looking for suggestions
I used 6PS and CDE but the big one was the 1959 OPT 4/8 ohm secondary's
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Re: Tweedle D build in progress - looking for suggestions
Dumble used 716P in the original.
CW
CW
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Re: Tweedle D build in progress - looking for suggestions
Thanks Charlie, maybe thats why I loved the sound of mine
~Phil
~Phil
tUber Nerd!