UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

TonyDuell · 24th Oct 2017, 11:50 am

The latest on this machine. I found my old Philips headphones with the 5 pin 360 degree plug which are historically the right ones for this machine. I wired a couple of cheap microphones to 5 pin DIN plugs (why is there no standardisation as to the pinout of these, Philips and B&O use pin 1 for the signal, Uher uses pin 3...) and plugged everything it.

It works fine. I can record, play back, monitor off-tape etc. Never having used a machine with separate record and playback heads for microphone recording before, the delay between speaking and hearing the off-tape signal in the headphones took a bit of getting used to.

So I've put the covers back on. All that needs to be done to complete it is to make a trim strip for the plastic dust cover (I mentioned that many posts ago).

24th Oct 2017, 11:50 am	#62
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Philips N4450 The latest on this machine. I found my old Philips headphones with the 5 pin 360 degree plug which are historically the right ones for this machine. I wired a couple of cheap microphones to 5 pin DIN plugs (why is there no standardisation as to the pinout of these, Philips and B&O use pin 1 for the signal, Uher uses pin 3...) and plugged everything it. It works fine. I can record, play back, monitor off-tape etc. Never having used a machine with separate record and playback heads for microphone recording before, the delay between speaking and hearing the off-tape signal in the headphones took a bit of getting used to. So I've put the covers back on. All that needs to be done to complete it is to make a trim strip for the plastic dust cover (I mentioned that many posts ago).