This raises an intresting question: Is the single/double crowns THAT much better? I mean good enough to justify around or well over USD100?
When I built a TDA1541A DAC, I put two chips in parallel. Paralleling several chip is an old tried and tested technique for reducing inconsistencies by averaging out the measurements across the chips and flattening (making more consistent) the response. Having a double crown eliminates the need to do this, as the double crown has no notable inconsistencies. It is for those that want the top 1% of measured chips and to to eek out every last bit of consistency across the spectrum from this chip and related designs.
I'm trying to design a dac with 4xTDA1541A, fed by normal/inverted signal.
The intention is a 2+2 (balanced + parallell) TDA1541A dac.
The intention is a 2+2 (balanced + parallell) TDA1541A dac.
Two things that make me suspicious:
- lasering instead of white printing;
- datecode 0449 (didn't Philips stop making these ~1996?).
These can be bought for $15 each and are not fakes .
They are recent production as are the standard 2004 chips .
They are recent production as are the standard 2004 chips .
Paul, can you kindly provide some 'evidence' to back this up?
I am sure that would be a breakthrough in this discussion
I am sure that would be a breakthrough in this discussion
I wonder if a double crown device made 10+ years ago would still meet its spec. The premium parts are selections for more accurate resistor matching, but the networks do age, even on the shelf
Also had one original 200x chip. That one did not have print but it was laser engraved with a different font. That one came from Marantz.
When there is demand things get produced. Always wondered why so many new TDA chips exist. I can not imagine that Philips made 100.000 extra for keeping in stock 🙂
When there is demand things get produced. Always wondered why so many new TDA chips exist. I can not imagine that Philips made 100.000 extra for keeping in stock 🙂
Well seems it sold (not to me). I hope the new owner is happy...
Perhaps if it was bought by a member here (purely for research purposes, of course), we'll hear in due course the outcome?