Recommended UK transformer for 3875 chipamp?

Colin · 26th February 2007, 11:01 PM

The time has come at last to build the LM3875 chipamp as I've had Peter's kit long enough to start feeling guilty about it.

The Plitron transformers are prohibitively expensive to buy from here in the UK (postage is more than the transformer), so what other transformers would UK builders recommend?

Nisbeth · 27th February 2007, 03:08 AM

http://www.madaboutsound.com/prod_det.asp?product_id=33

/U.

Colin · 27th February 2007, 11:11 AM

Thanks but I think he's discontinued those.

markiemrboo · 27th February 2007, 11:29 AM

http://uk.farnell.com/jsp/search2/br...RY%7c1#results

Minimum order of £20, but the delivery is free... and a single big transformer / two smaller ones will very likely be over £20 anyway

I got two 120VA dual 25vac secondaries, dual mono style regulated supplies, 'Multicomp' ones and they work great. These rectified to about 36-37vdc, so you'll probably have to be a bit careful if you're going with an unregulated supply.

CarlosT · 28th February 2007, 02:58 PM

Are these guys anywhere near you? The little encapsulated Avels powering my LM3875 are just peachy and made in England...

http://www.avellindberg.co.uk/

Colin · 28th February 2007, 04:20 PM

Aha, that looks more like it. I tried hunting online for Holden and Fisher who used to make the very solid, well-built toroids which appeared in early, Olive-case Naim gear, but either they are no more or are hiding. The Avels have a good reputation, though, so thanks for drawing that to my attention.

AndrewT · 1st March 2007, 08:02 PM

Hi,
Rapidonline were discounting their non ROHS stock, but I fear they are very depleted now. They have had a -30% offer and a -10% offer just recently. The Non ROHS are more like -50% to -75% on what are very competitive prices.

26th February 2007, 11:01 PM	#1
Colin diyAudio Member Join Date: Aug 2003	Recommended UK transformer for 3875 chipamp? The time has come at last to build the LM3875 chipamp as I've had Peter's kit long enough to start feeling guilty about it. The Plitron transformers are prohibitively expensive to buy from here in the UK (postage is more than the transformer), so what other transformers would UK builders recommend?

1st March 2007, 08:02 PM	#7
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, Rapidonline were discounting their non ROHS stock, but I fear they are very depleted now. They have had a -30% offer and a -10% offer just recently. The Non ROHS are more like -50% to -75% on what are very competitive prices. __________________ regards Andrew T.

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27th February 2007, 03:08 AM	#2
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	http://www.madaboutsound.com/prod_det.asp?product_id=33 /U.

27th February 2007, 11:11 AM	#3
Colin diyAudio Member Join Date: Aug 2003	Thanks but I think he's discontinued those.

27th February 2007, 11:29 AM	#4
markiemrboo diyAudio Member Join Date: Mar 2006 Location: Great Yarmouth, UK	http://uk.farnell.com/jsp/search2/br...RY%7c1#results Minimum order of £20, but the delivery is free... and a single big transformer / two smaller ones will very likely be over £20 anyway I got two 120VA dual 25vac secondaries, dual mono style regulated supplies, 'Multicomp' ones and they work great. These rectified to about 36-37vdc, so you'll probably have to be a bit careful if you're going with an unregulated supply.

28th February 2007, 02:58 PM	#5
CarlosT diyAudio Member Join Date: Oct 2006	Are these guys anywhere near you? The little encapsulated Avels powering my LM3875 are just peachy and made in England... http://www.avellindberg.co.uk/

28th February 2007, 04:20 PM	#6
Colin diyAudio Member Join Date: Aug 2003	Aha, that looks more like it. I tried hunting online for Holden and Fisher who used to make the very solid, well-built toroids which appeared in early, Olive-case Naim gear, but either they are no more or are hiding. The Avels have a good reputation, though, so thanks for drawing that to my attention.

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