A real DAC Philips TDA1541A "Double Crown"?

[Bernhard]

I measure with a 1kHz @ -60dB test CD and have a look at K2 - K9 with spectrum analyzer.

[TDA1540]

LSB is roughly 0.00006 % of the signal

[jean-paul]

Maybe Philips emphasises on other measurements and/or has better measurement gear ( other interpretation included ) ?

Just a thought

[Bernhard]

Originally posted by TDA1540
LSB is roughly 0.00006 % of the signal

Of the 0dB signal. That's why -60dB.

[Bernhard]

Originally posted by jean-paul
Maybe Philips emphasises on other measurements and/or has better measurement gear ( other interpretation included ) ?

Just a thought

You doubt the accuracy of my analyzer ?

Have a look at the 1541 datasheet, Philips measures total THD over frequency.

So if K2 to K4 is low and K6 to K9 is low but K5 is terrible, total THD will still be low.

Which means if you have S1 it could be garbage.

Also it does not say if all orders are equal or if even or odd orders are dominating, but what I read in the solid state forum, that is very important.

I see that all

[dbhh]

... for your answers. Now i'm a little bit more sure, that i get a real "double crown" (thx jean-paul). So i can start my upgrade project of the reVox B-266s.

Bye for now.
Dirk

[dbhh]

... is attached ...

[dbhh]

Hi jean-paul.

I bought it from an official distributor of replacement parts of MARANTZ (i lost my thread there?!).

First i did not knew a source of distrubution. 2nd i heared about fakes in this forum. So i thought: this will be the safest way to get a "real double crown" from "Audiotronic/Germany".