- Joined
- Feb 11, 2008
- Posts
- 8,816
- Likes
- 3,528
it's a power thing, USB 1 only puts out 500ma maximum, so not enough to fuel the mojo.
Sorry,not doubting but wondering...
Eager to learn.
Do you need more than 500mA in order to establish protocol communication ?
Unclear for me since Mojo is powered by a dedicated usb power input.
I made a post to answer this but it's not here. Maybe a mod deleted it.
I will try again though because I think it is relevant to the Mojo.
This is what the What Hi-Fi review of the Meridian Explorer says about requiring USB 2.0.
Quote, "
Furthermore, the Explorer employs USB audio class 2.0, which allows full native playback of high-resolution 192kHz sample rates. This is opposed to audio class 1.0 –as is found in the HRT microStreamer, for example – which limits the sample rate to 96kHz, with higher sample rates having to be downsampled."
Read more at http://www.whathifi.com/meridian/explorer-dac/review#q2iX4Kesd3TtEP32.99
The Mojo will still get a 5V signal on it's audio data line in, on a USB 1.0 hub.
It seems more likely that the issue is with bandwidth, as stated in the What Hi-Fi review of the Meridian Explorer.
Anyway @Arpiben found it in the manual.
Quote from Arpiben's post. (Post 20297 on page 1354.)
" Nevertheless,that is the reason why Chord in Mojo's manual is writing the following:
Connect Mojo to the host computer, phone, or tablet by inserting a USB lead into any available USB
socket. To support high sample rates (96Khz and above) the USB socket on the computer must be USB
2.0 or above."
No, it's still there, 4 pages back:
I found the point they made on the What Hi Fi of why the Meridian Explorer needs USB 2.0. (This must be why it doesn't work on my USB 1.0 hub even with CD FLAC files.)
Quote, "Furthermore, the Explorer employs USB audio class 2.0, which allows full native playback of high-resolution 192kHz sample rates. This is opposed to audio class 1.0 –as is found in the HRT microStreamer, for example – which limits the sample rate to 96kHz, with higher sample rates having to be downsampled."
http://www.whathifi.com/meridian/explorer-dac/review
I guess the Mojo sees the same reasoning.
I could buy a 2.0 hub and try the Mojo on it, but I'd rather not spend until someone confirms it. Thanks folks.
------------
Or of course I could use a USB extension cable. Hub or USB extension cable though will kind of defeat the object. If I end up buying a quality shielded USB cable for the Mojo that is. (Am thinking about buying a shielded cable to try stops random clicks on playback.)
A hub or extension cable will however make it easy to disconnect the PC from the Mojo. Thus allowing for input selection of optical easily; which is where this started.
PS: if you'd like to be singled-out for unfair treatment by the mods, with random un-called-for post-deletions, I can find out if that could be arranged!