Quote: Originally Posted by khewa The Naim DAC does exactly this. ie. it buffers the streaming data and plays it when it has enough data in it's buffer. Whatever it actually does, it is not what you say, for that means that it will stop playing when it runs out of data, or skip...

My friend asked me for advice on speakers to buy for primarily watching movies, 5.1 channel, so as I don't know anything about home theatre-related audio, I thought I would post here on his behalf and get suggestions. His price range is up to $300. I know that's low but he's not an audiophile...

Quote: Originally Posted by Wavelength less than 1.2ps at 10Hz which is really good It's not at all good for a 24-bit system, unless you only play 16-bit content.

Why pay $60 when there's an $2 way to defeat ground loops? Leave earth connected to the chassis, but between earth and the power supply ground use a heavy 10 ohm resistor, paralleled with two antiparallel diodes (opposite directions, in parallel) of a current rating higher than the equipment...

Looking at the transformer specs, the phase distortion is not too bad, but the THD is unacceptable, especially at low frequencies. This is nothing close to transparent. Note also that they don't present a measurement of the hysteresis, which is a form of distortion specific to cored inductors...

The I/V is current feedback and embeds a filter. There's no useful voltage at the input since the input impedance is fraction of milliohm and not really constant over the audio band.

Unfortunately those THD analyzers don't show the individual harmonics, which is critical since different harmonics have a very different perceptual weighting. The oscillator looks great though.

Since the DAC performance is not known, I'll need to isolate the I/V contribution to distortion, and thus need an ultra-low distortion sine generator. Then I can add the DAC to the loop and have an idea of its contribution. The 19k+20k is probably my best bet, since sound card ADC analog...

Quote: Originally Posted by Matias 03lab, My DAC1 USB stays warm after the 15s power-off too, burning away electricity and raising my power bill, definitively not an eco-friendly solution. The only way to completely shut if off, that is, not staying warm afterwards, is disconnecting...

XO or VCXO, I haven't decided yet (same jitter and price from what I understood of the quote). It's only cheap because I'm going to order a 100. I might organize a group order since I won't need that many (initially). I need to measure if using a CDCV304 clock distributor will have a low...

Quote: Originally Posted by jcx indirect Intermodulation measurements can get near the spot noise floor (~ -130 dB) for resolving specific orders of nonlinearity add some narrow filters, low noise gain and detecting -160 dB distortion products is possible even with $130 Juli@ you...

I wonder if this NI digitizer would be available for rent somewhere. Renting AP is about $2400 per month here, can't get any worse than that.

This used to be serious thread... :|

Quote: Originally Posted by spritzer No less then any electrostatic headphone with an amp. I would be more worried about the very high voltage which is an order of magnitude above electrostatics. And the voltage you get from walking across a dry carpet is an order of magnitude...

Quote: Originally Posted by b0dhi Anyone have a link to distortion specs of the Hill design? I've seen the plasmasonic specs and they weren't impressive. jayphil's page is now defunct but he had a bunch of measurements of the original and his modified plasmatronics--the main...

Bored much?

Interesting. I hadn't heard of Easy-PC before. It's not much more expensive than diptrace, so I'll have to do feature-by feature comparison between those two and Eagle as well.

Is there any sound card with lower than -100 dB noise/distortion of its input (preferably lower than -110 dB)? I want to avoid renting an Audio Precision to do distortion measurements since it's over two thousand bucks a month where I live. And I mean not just for 1 kHz, but at least 10 kHz...

Some people voted for "Other" but didn't bother to post what they were thinking of :|

The problem with the really nice stuff is that the really nice stuff is Altium Designer and that's about $12,000. :/ As for autorouter, it'd be nice for the digital stuff but I guess not the most important thing. I'd say the interface (both ease of use and power) and parts libraries are the...

Of course not. The power supply should have a high enough rejection ratio to filter any contribution from the fuses. That doesn't take away from what I wrote, however--I worded myself very carefully.

Not exactly amateur any more LOL... else I wouldn't be considering "buying"

trains, I don't give a **** about your off-topic crap; take your lame jokes elsewhere! Last time I checked, the thread topic was "I'm looking for hermetically sealed small signal latching relays that use a spring rather than permanent magnet latching system, with high quality contacts." When...

Bump...