dual recto power consumption

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BaklavaMetal
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dual recto power consumption

Post by BaklavaMetal » Tue Sep 27, 2011 6:46 am

Hello there!
Does anybody know how much Watts does Dual rectifier 3chan need to operate safely?
I'll be getting one this week, but US 120v version but i'm in europe so the voltage here is 230v.
so, i will need a stepdown transformer. I searched the web, and read the manual more than one time, and i couldn't find how much power this amp needs. Will 300w transformer be enough?

thank you!

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domct203
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Re: dual recto power consumption

Post by domct203 » Tue Sep 27, 2011 7:40 am

Welcome to The Board.

Your amp could draw up to 480W at maximum power before blowing the 4A fuse.

I would recommend a minimum of a 500W transformer

Dom
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BaklavaMetal
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Re: dual recto power consumption

Post by BaklavaMetal » Tue Sep 27, 2011 9:21 am

thanks for the welcome and thanks for the info :)

just one more hypothetical question: if i pull out 2 power tubes/1 rectifier tube so it runs on 50w power, will i lower the power consumption of the amplifier?

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domct203
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Re: dual recto power consumption

Post by domct203 » Tue Sep 27, 2011 9:42 am

Theoreticaly yes, but it will not be reduced by half.

Do not go cheap on the step-down tranny. The last thing you want to do is starve a tube amp of power. Your overall tone and dynamics will suffer.

Whether it is 2 or 4 powertubes I still recommend a minimum of a 500W tranny. There is the rare chance that if the step-down tranny fails due to overload you could expose the amp to pure mains voltage (240V). The parts of the amp that will need replaceing after that would be 2-3 times the cost of a high quality/power step-down tranny.

Dom
'07 Roadster Voodoo modded
'08 Stiletto Deuce II
'10 Mark V - sold
'18 TC-100
'01 Recto 4X12 Slant
'04 Recto 4X12 Slant/Straight
'74 Les Paul Custom
'95 American Strat
'12 Les Paul Signature T
TC G-System
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BaklavaMetal
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Re: dual recto power consumption

Post by BaklavaMetal » Tue Sep 27, 2011 10:00 am

don't worry, i won't spend 1500$ (and this is a BARGAIN price for a used one) on an amp and then go cheap on the transformer i need to run it. that's why i stated it's a hypothetical question :)

thanks!

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mikey383
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Re: dual recto power consumption

Post by mikey383 » Tue Sep 27, 2011 8:54 pm

I agree with Dom....MINIMUM of 500 watts....and I'll also add to make sure you get a quality transformer. This is one area to not skimp out on. It's better to spend a few bucks more on a quality tranny than spend a few grand on a new amp.
Guitars:Schecter C-1 Classic, Ibanez RG7321, Epiphone LP Supreme
Amps:70's Earth head
Cabs:Recto 4x12, 5150 4x12
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Past amps '95 Dual Recto, '96 Dual Recto, Stiletto Trident, 3 ch. Triple Rec

BaklavaMetal
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Re: dual recto power consumption

Post by BaklavaMetal » Wed Sep 28, 2011 5:56 am

i'll custom order a step down from a comapny here that makes transformers. i was wondering, where could i get the specs for the PT in the amp? so i can give them the specs to make me a new PT instead of rewinding the old one. stepdown is just a temporary solution because it's not practical, and i want to avoid all posibility of me or someone else plugging it straight in the wall and ruining it.

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domct203
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Re: dual recto power consumption

Post by domct203 » Wed Sep 28, 2011 7:03 am

The Dual Recto's Power Tranny is somewhat unique due to the variac (bold/spongy) function, which is actually an additional tap on the primary side. It is NOT your basic 100W amp PT. Here is a schematic of the Rectifier series power supply:

Image

That's the 2-channel version, but you can see the extra tap on the primary side. I do not know the actual specs of your transformer.

Personally, I would either get the replacement from Mesa (which I understand is not easy in Europe), or through Mercury Magnetics http://www.mercurymagnetics.com/pages/mainframe.htm

I believe you need the Mercury Magnetic "MESAB-DUALR-P-120/240" model, which is a high quality upgraded transformer. I have personally dealt with Patrick Selfridge at MM (email him and tell him Dominic with the Roadster Power Transformer recommended him), they are a great group of people willing to help you preserve and improve the integrity of your amp.

I agree, replacing the PT with a QUALITY unit is the best approach.

Dom
'07 Roadster Voodoo modded
'08 Stiletto Deuce II
'10 Mark V - sold
'18 TC-100
'01 Recto 4X12 Slant
'04 Recto 4X12 Slant/Straight
'74 Les Paul Custom
'95 American Strat
'12 Les Paul Signature T
TC G-System
==> NOMAD on Facebook <==

BaklavaMetal
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Location: Croatia - Europe

Re: dual recto power consumption

Post by BaklavaMetal » Wed Sep 28, 2011 8:32 am

okay, i'll look into it

thanks for the help :)

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