Marantz PM-32 question

AdrianW · 21st May 2007, 10:52 AM

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...

AdrianW · 24th May 2007, 08:52 AM

I'm sure there's someone out there who knows the answer!

richie00boy · 25th May 2007, 12:29 PM

Why don't you post a photo of the markings to see if we can decipher them?

AdrianW · 25th May 2007, 03:22 PM

Duh! Will do so some time over the weekend.

Thanks Richie

AdrianW · 26th May 2007, 07:11 PM

Ok, here's the picture...

Hope someone can help!

richie00boy · 26th May 2007, 10:35 PM

OK not much to be had from that, can't see were you deduced 25V 1A from?

destroyer X · 27th May 2007, 03:05 PM

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

AdrianW · 28th May 2007, 01:20 PM

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?

destroyer X · 28th May 2007, 02:14 PM

Power will be smaller.

regards,

Carlos

21st May 2007, 10:52 AM	#1
AdrianW diyAudio Member Join Date: Feb 2007	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... __________________ Adrian W

24th May 2007, 08:52 AM	#2
AdrianW diyAudio Member Join Date: Feb 2007	I'm sure there's someone out there who knows the answer! __________________ Adrian W

25th May 2007, 12:29 PM	#3
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Why don't you post a photo of the markings to see if we can decipher them? __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

25th May 2007, 03:22 PM	#4
AdrianW diyAudio Member Join Date: Feb 2007	Duh! Will do so some time over the weekend. Thanks Richie __________________ Adrian W

26th May 2007, 07:11 PM	#5
AdrianW diyAudio Member Join Date: Feb 2007	Ok, here's the picture... Hope someone can help! __________________ Adrian W


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26th May 2007, 10:35 PM	#6
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	OK not much to be had from that, can't see were you deduced 25V 1A from? __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

28th May 2007, 01:20 PM	#8
AdrianW diyAudio Member Join Date: Feb 2007	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? __________________ Adrian W

28th May 2007, 02:14 PM	#9
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	Yes Adrian....lower than i have imagined. Power will be smaller. regards, Carlos __________________ Try to build an amplifier folks ... it is pure adrenaline!

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