Reversed channel of Nait 1 tuner input

Is one a 3 pin DIN and the other a 5 pin DIN?

If with one source end RCA channel disconnected the Nait L-R channels are reversed when changing the DIN end cable connection between Nait  Tape & Tuner,  then it can only be that the Nait internal socket connection is reversed. 

Huge posted:

Is one a 3 pin DIN and the other a 5 pin DIN?

It happens with 5-pin DIN -> RCA cable.

..which is nigh on impossible because the DINs are directly mounted to the PCB, so can't be mis-wired. 

//HUGE

It happens with 5-Pin Din -> RCA cable.

//MIKE-B

Sorry but can't understand technical part :-P. Do you mean that Nait 1 has a internal socket problem??

Good point Richard.  Maybe Do Kim you/we need to start over:  disconnect the left channel RCA plug on the KDS,  then check the left channel is not playing on the Nait on both Tape & Tuner DIN inputs.    Then report back      

Richard Dane posted:

..which is nigh on impossible because the DINs are directly mounted to the PCB, so can't be mis-wired. 

Yup. I used several naim devices, but this problem is somewhat confused..

I plan to send it to the repair shop if it is a matter of nait 1, but I want to make sure it is not any other problem before that.

Mike-B posted:

Good point Richard.  Maybe Do Kim you/we need to start over:  disconnect the left channel RCA plug on the KDS,  then check the left channel is not playing on the Nait on both Tape & Tuner DIN inputs.    Then report back      

Thank you Mike-B

I disconnect the left channel RCA plug on the KDS

Tape input : I can listen Right speaker only and it sounds right (I can listen RIGHT sound part at RIGHT speaker)

Tuner input : I can listen Left channel only and it sounds wrong (I can listen RIGHT sound part at LEFT speaker.)

:-3

Adam, yes, I have just been going through my old notes and you have jogged my memory, and saved me going further - thank you.

Also a board error on the first batch of NAIT 2s - but  a slightly different problem and that one did get spotted before release. Possibly the earliest example of Naim putting the speaker terminals the "right" way around...

I have an early NAIT that I use in my bedroom - I will have to check the channels between Tuner and Tape input!

Adam Meredith posted:

A rare moment when my memory actually works - the original Nait did have this quirk on the Tuner Input - until quite late in its life.

Difficult to say how it got through - although, as Richard says, the sockets are mounted to the circuit board - so it wasn't a wiring error. Fixed around board version 6 or 7.

So - you are not imagining this. It's a (typically quirky?) design error, not entirely a fault.

The Service Department can fix this but there would be a charge MUCH easier to Just swap over the plugs at the tuner end - if using RCA phonos.

 

Thank you for your memory Adam.

So do you think this problem is due to design error?? I checked the serial number(14***) and it seems to have been made around 1984. Even if Naim company was established at that time, it is hard to imagine such a design mistake.

If it is simply a design mistake, it is relieved. I only have one amp now and I can not listen to music if I send Nait. :-P

I wonder why the old user did not realize this problem. Perhaps it's because jazz music was not as strict as the symphony orchestra..

Funnily enough, this reminds me the oddity of the NAP100 speaker outlets being the wrong way round - the wires crossed over each other towards the speakers.

Mike Sullivan posted:

Funnily enough, this reminds me the oddity of the NAP100 speaker outlets being the wrong way round - the wires crossed over each other towards the speakers.

Just to confuse you further, that's the right way around with Naim - a throwback to pro days and a useful reminder that placing a system between the speakers isn't always the best idea - although I see that Naim have since changed to the more conventional way around with the latest Uniti models.

Richard Dane posted:

Mike Sullivan posted:

Funnily enough, this reminds me the oddity of the NAP100 speaker outlets being the wrong way round - the wires crossed over each other towards the speakers.

Just to confuse you further, that's the right way around with Naim - a throwback to pro days and a useful reminder that placing a system between the speakers isn't always the best idea - although I see that Naim have since changed to the more conventional way around with the latest Uniti models.

Indeed I was further confused when I got my Nova and it was different to the NAP100.

Richard Dane posted:

Mike Sullivan posted:

Funnily enough, this reminds me the oddity of the NAP100 speaker outlets being the wrong way round - the wires crossed over each other towards the speakers.

Just to confuse you further, that's the right way around with Naim - a throwback to pro days and a useful reminder that placing a system between the speakers isn't always the best idea - although I see that Naim have since changed to the more conventional way around with the latest Uniti models.

I Always wondered why the speaker teminals were the wrong way  around in the past. Thought it had something to do with a sonic advantage. Now I know the answer.

I had to leave this & go on a hunter-gathering expedition,  now back & its good to see its a little less confused.  But a big thank goodness for Adam's memory as without that intervention I could see this getting seriously bent out of shape.      My OCD insisted I had to check my Nait-2 (its a later model & with the pre-amp output),   & whew, the tuner tape & aux are all L&R channel correct,  not that Nait's are renowned for their sound staging.

Let us know what you are going to do with it Do Kim.  

Mike-B posted:

I had to leave this & go on a hunter-gathering expedition,  now back & its good to see its a little less confused.  But a big thank goodness for Adam's memory as without that intervention I could see this getting seriously bent out of shape.      My OCD insisted I had to check my Nait-2 (its a later model & with the pre-amp output),   & whew, the tuner tape & aux are all L&R channel correct,  not that Nait's are renowned for their sound staging.

Let us know what you are going to do with it Do Kim.  

Thanks for your effort Mike

As Adam said, if it was a design error, I do not plan on doing something.

I do not think the mistake in design will affect the sound quality. (Perhaps ...?)

I can live with that for a while.. If I send Nait1 repairs, I will post the post again. :-)

Richard Dane posted:

Mike Sullivan posted:

Funnily enough, this reminds me the oddity of the NAP100 speaker outlets being the wrong way round - the wires crossed over each other towards the speakers.

Just to confuse you further, that's the right way around with Naim - a throwback to pro days and a useful reminder that placing a system between the speakers isn't always the best idea - although I see that Naim have since changed to the more conventional way around with the latest Uniti models.

This sort of conversation confused me for years, I’ve always had my amps and sources a good distance away from the speakers, usually on a different wall, so it’s just a question of which cable has to be ribboned to make it shorter. It wasn’t until I looked at the System Pics thread I realised it was if you had your amps between the speakers.