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Old 21st May 2007, 10:52 AM   #1
AdrianW is offline AdrianW  United Kingdom
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Default Marantz PM-32 question

Would anybody know the spec for the transformer used in the Marantz PM-32 integrated amp?
I have one of these in my possession that has a transformer with a shorted winding.
It has markings on the top that would suggest it might be 25v 1amp but it's not at all clear.
Don't want to throw it out, it served me well for years! Hoping to sell on to a good home.

Any help gratefully received...
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Old 24th May 2007, 08:52 AM   #2
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I'm sure there's someone out there who knows the answer!
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Old 25th May 2007, 12:29 PM   #3
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Why don't you post a photo of the markings to see if we can decipher them?
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Old 25th May 2007, 03:22 PM   #4
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Duh! Will do so some time over the weekend.

Thanks Richie
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Old 26th May 2007, 07:11 PM   #5
AdrianW is offline AdrianW  United Kingdom
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Ok, here's the picture...

Click the image to open in full size.

Hope someone can help!
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Old 26th May 2007, 10:35 PM   #6
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OK not much to be had from that, can't see were you deduced 25V 1A from?
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Old 27th May 2007, 03:05 PM   #7
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Default The amplifier that is using this transformer is a 40 watts per channel unit

80 watts of audio power, both channels driven....maybe a 170 watts transformer.

40 watts of audio, over 8 ohms means something around 18 volts in the output.

To produce 18 volts, the amplifier will need a 33 plus 33 supply (more commom value... around that).

Also something alike 2.2 Amperes each channel.

This transformer may be 20 + 20 Volts AC....and able to feed 4.4 amps.

Well..... i have not "cristal ball"... and also not magic power...but, it may be something around that.

regards,

Carlos
Attached Images
File Type: gif maybe 170w.gif (44.9 KB, 50 views)
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Old 28th May 2007, 01:20 PM   #8
AdrianW is offline AdrianW  United Kingdom
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Default Size...

I've measured the unit and the dimensions come out at...

2.25 in wide 2 in deep 3 in high
57mm 51mm 76mm

Weighs approx. 3lbs (2.5 kg)

So possibly slightly lower powered than suggested?
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Old 28th May 2007, 02:14 PM   #9
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Default Yes Adrian....lower than i have imagined.

Power will be smaller.

regards,

Carlos
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