• Hardware
  • MOTU Ultralite Mk3 Hybrid roundtrip latency
2010/03/06 18:13:24
Mus
I'm assuming not too many people have this interface but does anyone know whether I can expect better roundtrip latency from MOTU 64-bit drivers than my current Tascam US 122L?

Current roundtrip is 12.2ms at 128 samples on a low latency setting (the lowest latency setting is unworkable)

I need a notch (or two?) better than that to trigger softsynths when recording...

Ta
2010/03/06 19:41:46
CJaysMusic
I cant help, cause i have XP32, but I get a 5.4 Round trip latency (not one way) with my Motu ultralite
Alot of users have this interface, but i dunno about the 64bit part.
My ASIo buffers do go down to 64 and Motu drivers are known to be better than Tascam's
Cj
2010/03/06 22:19:08
Player
Round trip 5.3 msec, 64 samples, and 64 bit here--Ultralite mk3.  Rock solid.
2010/03/07 06:39:05
Mus
Player


Round trip 5.3 msec, 64 samples, and 64 bit here--Ultralite mk3.  Rock solid.

Using the USB, not the FW, right?

How do you like the interface? Good quality pres, software etc.? I'm looking to buy it next week and was hoping not to have to go up to an RME to get the latency down.


The Tascam will only go down to 128 samples without glitching.

However, I just tried ASIO4ALL with the internal HP soundcard at 64 samples and a reported roundtrip of 10.9ms and the softsynth midi input/playback with my Oxygen8 was totally workable.

Hopefully this augurs well for the UL Mk3 working well, and as a bonus I can probably also use my Audient pre at home through the SPDIF.
2010/03/07 17:14:06
Player
My apologies.  I don't own the the Hybrid, just the Ultralite mk3.  It would be great if the USB works as well as the firewire.  Let us know if you purchase one.  I think Jim at Studio Cat sells them.  He would know the specs and performance, driver issues, etc.
2010/03/07 18:56:16
Mus
Player


My apologies.  I don't own the the Hybrid, just the Ultralite mk3.  It would be great if the USB works as well as the firewire.  Let us know if you purchase one.  I think Jim at Studio Cat sells them.  He would know the specs and performance, driver issues, etc.


Ah right, easily done.

I know that Jim advocates the RME Fireface UC over the MOTU for USB, but it's a hefty price.

I might review my strategy in view of my discovery today that I can input midi via ASIO4ALL and the internal soundcard. I don't need it on stage to trigger midi or anything.

Maybe what I need is max 4 inputs plus SPDIF and good quality converters...
2010/03/08 02:05:13
Jim Roseberry
Ah right, easily done. I know that Jim advocates the RME Fireface UC over the MOTU for USB, but it's a hefty price.

 
If you want/need low round-trip latency (via USB), the Fireface UC is currently the only unit that'll deliver ~6ms at a 64-sample ASIO buffer size/44.1k.  Most USB units don't even offer ASIO buffer sizes smaller than 128-samples... plus they're using a large hidden safety buffer... so round-trip latency is thru the roof.  
 
If you get the Ultralite mkIII, run it via a good TI Firewire controller... and you'll have decent round-trip latency.
It's a couple of ms higher than the pre-mkIII units (to support the onboard DSP), but if you run at higher sample rates (88.2 or 96k) it'll negate the extra latency (albeit at a higher CPU load - which is a good trade-off if you're running a fast DAW).
2010/03/08 02:22:35
Mus
Thanks Jim. I'll bear that in mind.
2010/03/08 06:14:07
Mus
Here ya go:
 
http://www.motunation.com/forum/viewtopic.php?f=14&t=39578
 
Rubbish USB drivers
2010/03/08 18:58:28
Mus
Actually, ASIO4ALL gets the Tascam down to 128 samples and 7.3ms roundtrip - just about workable to record softsynths for a Johnny-one-note pianist like me :-)
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