Morgan RCA35
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beasleybodyshop
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Morgan RCA35
So, I was looking at the gut shot for one of these Morgan Amps, and this is what im thinking i see:
tweed deluxe preamp with a long tailed phase inverter
split cathodes on v1 a la plexi marshall
master volume control that you can defeat from the circuit
standard fender TMB tone stack
all being fed into a 6L6 power amp section - without seeing the transformers (it says its a 35 watt amp) maybe using something along the lines of a 40 watt bandmaster or super power transformer? Just trying to wrap my head around this one.
tweed deluxe preamp with a long tailed phase inverter
split cathodes on v1 a la plexi marshall
master volume control that you can defeat from the circuit
standard fender TMB tone stack
all being fed into a 6L6 power amp section - without seeing the transformers (it says its a 35 watt amp) maybe using something along the lines of a 40 watt bandmaster or super power transformer? Just trying to wrap my head around this one.
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"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
Re: Morgan RCA35
I don't know.
But, is anyone else bothered by the lead-dress on the three items marked with a red x in the attached photo?
But, is anyone else bothered by the lead-dress on the three items marked with a red x in the attached photo?
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- Milkmansound
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Re: Morgan RCA35
They took great care to mout that cathode ground resistor for the finals on top of the bypass cap maybe forgetting that the whole amp turns upside down - that's a recipe for a dry cap!
The flying lead stuff doesn't bother me so much so long as they wrap them tight around the lugs before soldering
The flying lead stuff doesn't bother me so much so long as they wrap them tight around the lugs before soldering
- randalp3000
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Re: Morgan RCA35
It might look something like this, but you didn't get it from me
however that one has a pull bright
tweed baseman/marshall preamp without cathode follower driving tone stack.
however that one has a pull bright
tweed baseman/marshall preamp without cathode follower driving tone stack.
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- Leo_Gnardo
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Re: Morgan RCA35
Roasting el caps with nearby hot resistors was done by plenty of commercial builders too so just following the norm.Milkmansound wrote:They took great care to mout that cathode ground resistor for the finals on top of the bypass cap maybe forgetting that the whole amp turns upside down - that's a recipe for a dry cap!
When they wrap the wire on & forget to solder, that bugs me. Seen it happen a lot. Heck even I've done that... put head-slap smiley thing here.The flying lead stuff doesn't bother me so much so long as they wrap them tight around the lugs before soldering
down technical blind alleys . . .
Re: Morgan RCA35
Nearly every gut shot I've of this manf across different models, seemed like there was a race to get it assembled in 30 mins.
TM
TM
- randalp3000
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Re: Morgan RCA35
I feel the same way. I've seen 2 with wires not soldered in pots.ToneMerc wrote:Nearly every gut shot I've of this manf across different models, seemed like there was a race to get it assembled in 30 mins.
TM
found one
[IMG
Last edited by randalp3000 on Sun Feb 09, 2014 4:26 pm, edited 1 time in total.
- VacuumVoodoo
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Re: Morgan RCA35
This. And over half of solder joints fail already on visual inspection.NickC wrote: But, is anyone else bothered by the lead-dress on the three items marked with a red x in the attached photo?
Also, where is protective earth cable attached?
Aleksander Niemand
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Life's a party but you get invited only once...
affiliation:TUBEWONDER AMPS
Zagray!-review
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Life's a party but you get invited only once...
affiliation:TUBEWONDER AMPS
Zagray!-review
Re: Morgan RCA35
I was thinking the same thing, pretty poor craftsmanship for $1700, even if it was only $700.VacuumVoodoo wrote: This. And over half of solder joints fail already on visual inspection.
Also, where is protective earth cable attached?
TM
- randalp3000
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Re: Morgan RCA35
OMG I forgot, it's a copy of the 18 Watt Superlite TMB pre with a couple very small tweaks.
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Re: Morgan RCA35
What kind of power section is this exactly? This really looks like a superlite a lot. Does anybody know what changes should be made to the superlite schematic to run it with 6l6? I would use a Bassman power and output transformer probably.
Re: Morgan RCA35
Ahh just saw the schematic. Great !
Re: Morgan RCA35
That schematic has "350-0-350 unloaded" written on it, but then 370V for the first power supply node, which doesn't add up to me unless I'm missing something?shocki wrote:Ahh just saw the schematic. Great !
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beasleybodyshop
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Re: Morgan RCA35
Randall, was there some sarcasm font tossed in there lol?randalp3000 wrote:OMG I forgot, it's a copy of the 18 Watt Superlite TMB pre with a couple very small tweaks.
since i started this post, ive been inside two of these. I definitely agree with the comment that someone made about these things being assembled together in 30 minutes. The two that i looked into both had wires that were literally one nudge from breaking off.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
Re: Morgan RCA35
Yeah but, but, but, but, it has Sozo's and Mercury transformers! 
Tom
Don't let that smoke out!
Don't let that smoke out!