hmmm

[denontillidie]

I have recently moved my CD player from the CD input on my amp to the AUX input, just for a listen.

I have found that the performance increased dramtically, much more vibrant and, basically, better.

I have a theory that this is because rotel have 'tuned' the CD pre-amp to work best with their own CD player. To the detrement of any third party brands (pioneer).

Hence, any third party kit should be treated an as auxillary source.

Am I right or did i just happen to strike lucky?

Rob

 

[Andrew Everard]

No, it's probably just that the aux input has higher sensitivity than the CD one, given that CD players generally tend to output a higher signal level than other line sources

 

[denontillidie]

maybe. I will have to dig out my manual for the amp to check the specs.

But, it sounds so much better, i expect that maybe the rotel CD player has a very different output characteristic from the PD-D6 and the AUX socket matches it more closely to that of the pioneer amp.

Before it sounded just a bit 'wrong', like it was someone talking to you but looking the other way. if that makes any sense 🙂

rob

 

[denontillidie]

there is truth in both of these angles.

Have checked the output voltage level of the RCD-1070, and it sits at 0.5p-p (500mV) during playback.

The pioneer rather stingily sits at 200mv p-p. Hence, the CD input on the rotel amp is expecting to see something around the 500mV level if you have been a good boy and bought a matching CD player.

But if you are being difficult and want to match up an existing CD player, it will be under-driven. Hence, shove it in the AUX and see what happens.

have fun,

rob (who is now going to go and stick P.U.L.S.E on)

 

[denontillidie]

quick amendment:

the CD player is actually too loud for the rotels cd input and is saturating the signal, the aux input is less sensitive.

same principle applies though

 

[Anonymous]

Interesting. This is something that I had never thought of. Good detective work!

I wonder if this is is normal?