Let's See Your Transformers!

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Redboy

Re: Let's See Your Transformers!
« Reply #20 on: 31 Oct 2014, 02:30 pm »
I have a weakness for good transformers.  There's something about good iron that I cannot resist! 

I don't have photos of my "collection" as I might be forced to confront a problem I'd rather deny existed...




FullRangeMan

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Re: Let's See Your Transformers!
« Reply #21 on: 31 Oct 2014, 05:50 pm »
Nice thanks.
Transformers are solution.

Freo-1

Re: Let's See Your Transformers!
« Reply #22 on: 31 Oct 2014, 06:18 pm »
Nice thanks.
Transformers are solution.




They sure are.  The primary reason this 6AH4 sounds so good is the step down transformers.  This preamp is quieter than most SS preamps I have had.   :o


 




 


ElliottStudio

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Re: Let's See Your Transformers!
« Reply #23 on: 3 Nov 2014, 03:49 am »
^^^ Yes! step downs work wonders in preamps to lower the voltage, impedance and noise all in one shot. Who needs 25V p-p to drive their power amps? Most amps clip well before 2V p-p input.

Here's the power transformer to one of my amps. It's custom wound by an industrial transformer winder here in Seattle. It's chunky! Rated for 50 / 60hz service, with a temp rise rating of 115 degrees, 410VA. Noise level (acoustic buzz) is rated at 40dB max! These guys know what they're doing.





TrungT

Re: Let's See Your Transformers!
« Reply #24 on: 3 Nov 2014, 04:15 am »
^^^^^
Nice  :thumb:

shoot

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Re: Let's See Your Transformers!
« Reply #25 on: 5 Nov 2014, 05:00 pm »
Vintage Tango
Almost 9 lbs each.

 


 

gorgeous!! Unfortunately the manufacturer has been shut down.

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #26 on: 17 Nov 2014, 12:01 am »
Never order audio transformer in a commercial transformer builder.
This result may be it, the lump in the side is a amendment with solder in the winding that the negligent do.
This is a 3A, 2,5kg toroidal to reduce 220V to 120V to a CD player.


FullRangeMan

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Re: Let's See Your Transformers!
« Reply #27 on: 17 Nov 2014, 12:06 am »

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #28 on: 17 Nov 2014, 12:07 am »

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #29 on: 17 Nov 2014, 03:24 am »
Unfortunatelly a new try with a 6kg toroid dont reveal better sound quality, even with alu tape and QED speaker cable as leads.

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #30 on: 17 Nov 2014, 03:24 am »

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #31 on: 17 Nov 2014, 03:32 am »
Maybe a cheap trafo from any hardware store would do the same sound quality:
« Last Edit: 17 Feb 2017, 05:26 pm by FullRangeMan »

malpa

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Re: Let's See Your Transformers!
« Reply #32 on: 17 Nov 2014, 10:50 pm »
They are C core, awg 29, M6 and take me four months to get ready, more sea ship.
OBS.: Updated to new photo.


...i think i have seen it before :-),...good luck with your transformer,.....it looks amazing and i bet its the real deal !!!!!!!!!!
best.

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #33 on: 18 Nov 2014, 11:03 pm »
You are right, your GM70 amp use trafos from Ogonowski too.
Regards

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #34 on: 20 Nov 2014, 12:38 pm »

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #35 on: 25 Nov 2014, 05:43 am »

sturgus

Re: Let's See Your Transformers!
« Reply #36 on: 26 Nov 2014, 10:14 pm »
Well said I will, I was think on sides in real wood and top in 5mm aluminim or 10mm acrylic(poor heat dissipating) but it can be easily bent.
Any suggestion??

You could try the commercial grade baking pans. I am working on a project that uses 9x13x 2 aluminum pans. they are quite sturdy. I can stand on one and it does not flex. I weigh in at 250lbs. they cost around $25 a piece. I found them locally at a specialty cooking shop.
You can also buy aluminium spray paint that bakes on for a very hard finish.
 
http://www.cooksdream.com/mm5/graphics/productimages/UB10411_560x560.jpg

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #37 on: 27 Nov 2014, 01:29 am »
Thanks for remember this option, I will look here if they have 5mm pan.
I cant use these 1 or 2 mm pan you mention as the transformers are too heavy.
Good luck on your project.

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #38 on: 28 Nov 2014, 11:19 am »
Power transformer vs amp output power, real world talk:
https://www.youtube.com/watch?v=V1-_gNE6YYE
Language is very easy.

FullRangeMan

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Re: Let's See Your Transformers!
« Reply #39 on: 29 Nov 2014, 02:55 am »
Scope demo on transformer location at the chassis:
https://www.youtube.com/watch?v=Ublo6uSBwfw