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I tried a 15 foot cable and it made the audio garbled.. Went to a 2 foot cable and it worked fine. BTW - The 15 foot Cable works fine for other other applications, so there is nothing wrong with it.Cut-Throat
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Audio Quest would charge hundreds.
spdif with correct cable impedance and bnc 75R sockets is better than usb. Typically a 5m spdif cable sounds better than a short one as refelction effects are minimised
IS your USB interface XMOS based? If so, then it may need power, even though the DAC is powered. Also, these are notorious for being extra sensitive to the cable quality. It is due to the receiver chip in that design. XMOS forums shows other designers having problems there too. I have had problems as well.
Steve N.
Nt
I was using a laptop on battery and 15 feet was a no go. What is your set up. PC Tower with plenty of juice, maybe ???
Cut-Throat
DAC has it's own power supply. Doesn't matter if Laptop is running on battery of power supply.
I've never tried THAT.
It is a regular full DAC with power supply and 110 volt cord. Just a 15 foot USB Cable that works for other applications.
Cut-Throat
over to the Marantz NA7004 Network Audio Streamer in my main system.
I am using an Asus Tablet with keyboard and a known good 15 ft.. USB Cable. It put out some sound that was very faint and garbled. When I switched to the 1 ft. USB Cord, everything worked fine. - So, I think there are some limitations on USB Cord Length. They certainly seem to be more sensitive than Ethernet Cables.
Cut-Throat
There are tolerances for USB transmitters, USB cables and USB receivers. So long as the sum total of these margins is not exhausted the system will work reliably, otherwise there will be various errors, the extent depending on how far the margins have been exhausted. This is nature of digital communications: things are "perfect" up to a point and then start falling apart. If you want to know whether it was the cheap computer, the cheap USB cable or the cheap USB device that wasn't working right there is test equipment you could buy, but it could cost 100 times the equipment and cables you might want to test. A simpler solution is to avoid long cables and to junk equipment that doesn't work reliably with a bunch of other devices.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
5 meters. But you use 2 repeaters to give you the 15'. I believe you can have up to 4 repeaters, giving you approx 25 feet. Pushing specification boundaries would be optimum IMO. Let your ears direct you...5> repeater> 5> repeater> 5 equals 15 meters
I was checking out some USB cables with built in repeaters on Amazon. Don't know anything about them though.
Edits: 10/30/14 10/30/14 10/30/14 10/30/14
So, the folks here that are using PCs hooked to a DAC have their PCs within 5 feet of the DAC unless they are using a 'repeater' ???
If true, This is not that cool to me.
Cut-Throat
obviously your equipment is drawing more power than the cable will bare. I'm with Tony.
Personally, I've never had the need run longer than 1 meter.
They certainly seem to be more sensitive than Ethernet Cables
They are.
5 m is max for USB, 15 ft is pretty close to this max
Ethernet allows for 100m.
You might try a USB2 certified cable.
The 15 ft cable might work in other circumstances e.g. driving a printer but in this case we talk bulk mode. If there is an error, there will be a retry. In case of audio it is isochronous mode so no retry.
It is thinkable that the cable does a bad job but in bulk mode this is harder to detect (low throughput)
The Well Tempered Computer
nt
Cut-Throat
So, it's either crappy cable or crappy equipment at one or both ends of the cable.
For about $8 bucks you can stop wondering.
Link below:
I ordered one... We'll see how it goes. I am pretty much a confirmed Squeezebox touch user, but wanted to see how others are using their Computers to a DAC. So, far I have to say that I am not impressed!
Cut-Throat
"So, far I have to say that I am not impressed!"
The USB of your DAC is not very good, it uses the PCM2707. The Mini Max + is much better. Get a modern USB to SPDIF convertor and you will hear a difference.
I am using the Teac UD-301 and USB for both the SBT and PC.
Cut-Throat
Oh,
Though you had the MiniMax in a picture. Have not heard the 301, but it looks like a nice DAC. IMO a PC done properly will be much better than the SBT and most of the streamers that have been recently discussed. I find it a bit surprising how impressed some are by the SOTM mini server.
regards
Bob
For what it is worth, I use, successfully, a 5 meter Belkin Gold USB cable from a Paul Pang PCI-e USB 3.0 card to my Dangerous Music Source DAC. The Source is self powered. No problems, at all.
I have also used a Monoprice-sourced repeater USB cable, when I positioned my DAC about 25 feet from my music computer, but close to my amplifier. No problems at all. But I thought I'd try positioning my DAC closer to my computer so I could use a shorter USB cable with long interconnects. Both arrangements work well.
Rich
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