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| Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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25th Apr 2021, 5:51 pm
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#1 |
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Diode
Join Date: Apr 2021
Location: Bournemouth, Dorset, UK.
Posts: 9
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Hitachi SDT 400 tape out din
Hi And thank you for letting me join.
I have recently got my hands on a Hitachi SDT400 music center and was wondering if anyone could help with the rear tape out din socket ? i want to connect the music center to my sound system which has a 3.5mm stereo plug . i was looking on ebay and found a lead pic atached . would this work as i see not all the pins are connected. and what is this RIF switch for ? Many thanks for any replies. Rog |
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25th Apr 2021, 6:09 pm
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#2 |
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Nonode
Join Date: Jun 2009
Location: Herefordshire, UK.
Posts: 2,495
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Re: Hitachi SDT 400 tape out din
I think RIF stands for radio interference function. The idea was that if you were recording a radio programme on MW or LW and got interference from the recording process then switching to the alternative setting might remove the interference. What the switch does is alter the internal bias oscillator frequency.
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25th Apr 2021, 6:17 pm
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#3 |
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Nonode
Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 2,117
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Re: Hitachi SDT 400 tape out din
That DIN plug is correct, being the 120° version, but it will connect to only one side of the DIN socket, which could be input or output. Someone here will know if there was a standard for this.
It would be safer to find a DIN plug to two jack plugs, (I would prefer phono plugs). You will need both the IN and OUT connections if you want to play tapes into or record from the external system
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- Julian It's good here 
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25th Apr 2021, 6:58 pm
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#4 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Hitachi SDT 400 tape out din
Looks like a 180 degree DIN plug from here......
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25th Apr 2021, 7:11 pm
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#5 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Hitachi SDT 400 tape out din
So far as I know the connecting lead you show is correct, Pin 3 is the L channel signal output, Pin 5 is the R channel signal output and Pin 2 is the common ground for both channels.
The RIF switch function is as Steve says. Lawrence. |
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25th Apr 2021, 7:45 pm
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#6 |
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Nonode
Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 2,117
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Re: Hitachi SDT 400 tape out din
Sorry, I really meant 180°, fingers got it wrong
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- Julian It's good here
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25th Apr 2021, 8:18 pm
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#7 |
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Dekatron
Join Date: Feb 2009
Location: Chesterfield, Derbyshire, UK.
Posts: 3,766
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Re: Hitachi SDT 400 tape out din
Very nice unit ,I remember them new , I seem to think they cost around £400. yes 3 an5 output 2 common earth . Mick.
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25th Apr 2021, 10:37 pm
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#8 |
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Dekatron
Join Date: Jul 2008
Location: Kington, Herefordshire, UK.
Posts: 3,675
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Re: Hitachi SDT 400 tape out din
Not sure about this - it depends whether the socket is talking to the cassette deck or for use with an external tape machine. In order to allow tape machines and receivers to talk to one another with a pin-to-pin DIN cable, recorders had inputs on 1,4 and 2 and outputs on 3,5 and 2, whilst receivers were reversed - inputs on 3,5 and 2 and outputs on 1,4 and 2.
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26th Apr 2021, 2:19 pm
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#9 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Hitachi SDT 400 tape out din
Found this schematic, not a SDT-400 but a SDT-116, in that one Pins 1 and 4 are the outputs, that said the outputs from the stereo decoder are interesting
 as is the stereo/mono switch https://www.petervis.com/manuals/hit...it-diagram.jpg Lawrence |
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