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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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10th Oct 2019, 7:06 pm | #1 |
Heptode
Join Date: Feb 2011
Location: Southend, Essex, UK.
Posts: 802
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Pioneer SA 410, mains sockets problem
I picked up one of the above amps at a boot sale, super condition and performs very well for a tenner!
It has on its rear panel two switched and one unswitched mains sockets for powering other units. Initially the sockets looked like the more normal 'kettle plug' type but upon offering up a plug the earth pin socket is about half the size as normal and hence won't fit! Does anyone know what this socket type is called? and can the plugs be got hold of? It has moulded it it CM-10 and HIRAKAWA. Alan |
10th Oct 2019, 9:47 pm | #2 |
Dekatron
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 3,315
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Re: Pioneer SA 410, mains sockets problem
A picture will help. Just looked via Google and there are 3 different sockets shown in images all saying they are Pioneer SA 410.
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10th Oct 2019, 10:26 pm | #3 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
Posts: 556
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Re: Pioneer SA 410, mains sockets problem
Hi Alan. From your description I would say it was like the plug on the TX 410 in this link :- https://www.ebay.co.uk/itm/Pioneer-T...8AAOSwA71dg-oK
They are not common anymore but you ocassionaly see them on ebay although the descriptions vary so not easy to find. Pioneer used them for their stack systems for convenience. There are 2 pin and 3 pin versions and a non earthed type which has a plastic earth pin for location only so polarity is maintained. I had one on a pioneer timer and replaced it with a standard chassis iec socket. I think a little bit of filing was necessary but makes it much more usable. Of course if you go this route the mains lead to the amp would need to be a 3 core to be safe and comply. David. |
10th Oct 2019, 10:48 pm | #4 |
Heptode
Join Date: Feb 2011
Location: Southend, Essex, UK.
Posts: 802
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Re: Pioneer SA 410, mains sockets problem
Thanks for your replies. David that looks like the beastie!
As you can see from photo it looks like a kettle plug with the earth pin filed to half it's width, think I will have to manufacture one. Alan |
10th Oct 2019, 11:20 pm | #5 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
Posts: 556
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Re: Pioneer SA 410, mains sockets problem
The earth pin on the plug for that type of socket is just plastic as you wouldn't want the rest of the system earthed or there would be earth loop hums.
I see what looks like a 3 core mains lead so you could get 3 iec sockets and install those for less than the price of the original plugs. David. |
11th Oct 2019, 9:34 am | #6 |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,669
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Re: Pioneer SA 410, mains sockets problem
Another option for a connector to fit those might be the pale grey "Rendar" type mains plugs. Their pins are the same size and pitch as a standard IEC C13/14 connector, but without the shroud round the outside. This means that it's very easy to put the earth pin in to one of the live pins of a standard "kettle" mains lead, which is really dangerous and is probably why they fell out of favour.
I've seen them used on 1980s professional equipment and there are probably still some around somewhere. Chris
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12th Oct 2019, 12:00 am | #7 |
Heptode
Join Date: Dec 2008
Location: Somerset, UK.
Posts: 553
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Re: Pioneer SA 410, mains sockets problem
Looks like this one. A Bulgin part P672
Alan |
12th Oct 2019, 2:18 am | #8 |
Heptode
Join Date: Jan 2004
Location: Stockport, Greater Manchester, UK.
Posts: 827
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Re: Pioneer SA 410, mains sockets problem
And that was superseded, for the reason Chris mentioned, in about 1988, by one with a plastic projection to stop it fitting an IEC lead, which could be removed with a sharp knife and brute force when needed as a legitimate replacement for the earlier type!
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12th Oct 2019, 2:52 am | #9 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
Posts: 556
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Re: Pioneer SA 410, mains sockets problem
I still say replace them with IEC snap in sockets and have done with it.
https://www.ebay.co.uk/itm/2-3-pin-I...YAAOxyeglTbOTZ David. |
13th Oct 2019, 11:30 pm | #10 |
Heptode
Join Date: Feb 2011
Location: Southend, Essex, UK.
Posts: 802
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Re: Pioneer SA 410, mains sockets problem
Thanks, changing the sockets seems a better way to go plus it would give the opportunity bro change the mains cable which looks like it could supply a 3kw heater!
Alan |
14th Oct 2019, 8:01 am | #11 |
Dekatron
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 3,315
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Re: Pioneer SA 410, mains sockets problem
The mains cable has to be big enough to supply all the sockets and the amp. If there is 110 volt capability then the current will be roughly doubled - hence the fat cable is needed. It may just be that they used the same cable on all models sold worldwide. I would leave the cable as it is.
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14th Oct 2019, 8:18 am | #12 |
Guest
Posts: n/a
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Re: Pioneer SA 410, mains sockets problem
You can get two pole IEC plugs/sockets.
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