"Dave Plowman (News)" wrote in message
...
In article ,
David Looser wrote:

Err.. no. The DIN system worked with high output impedences and low
input impedances. There was, of course, significant signal attenuation
in so doing with consequent S/N ratio implications, but it did reduce
the HF loss due to cable capacitance.

You've got me confused there. Thought low out high in was the rule.

It is now.

What
make would I be looking at for this?

Pretty much anything German made in the 50s or 60s: Grundig, Telefunken,
etc.

I had a Quad 3 series that used DIN
connectors throughout - but that was all low(ish) out high(ish) in.

Yes, but that sort of stuff used the DIN connector without using the DIN
standard.

The standard originated as a way of feeding a tape recorder from a valve
radio. In order to provide a recordable output that wasn't going to be
effected by the volume control the tape-recorder output was derived directly
from the AM detector/FM discrminator, but to minimise the loading on that it
was fed via a resistor of 100k or so. Then the "diode" input of the tape
recorder had an input impedance of around 2k. Since the tape recorders
always had adequate gain in the recording amplifier to work from a
microphone the signal loss from this form of connection wasn't a problem.

This standard dragged on in a half-hearted sort of way into the '70s when
domestic tape decks (by then often Japanese in origin) had both phono and
DIN connectors. Compared with the phono sockets the DIN had a higher output
impedance, a lower input impedance and greater input gain.

David.