3 Interfaces, 2 days, 1 big headache

I'm unable to get my latency under control. I started yesterday with the Cake UA25 box, bought a tascam USB unit and it was a dog. Today I bought the new Quad capture from Roland. I have done the installation but really can't get the RTL below 9ms. At this setting there's all sorts of noise and ticking but increasing latency doesn't make it go away.

If anyone is using the Roland Quad capture and would share their settings I would appreciate it. Let me know what settings I need to provide so you can help me. Free tube amp consultations for anyone that helps.

Have you tried the devices in different USB slots?  On some machines the USB slots aren't equal due to IRQ sharing etc.  On my laptop one of the USB ports is clearly superior to all the others even though they're all supposedly USB 2.0.

I agree with John, you should be able to do much better than 9ms RTL.  

Last of all check that the actual latency you end up with is indeed detrimental, many claim ridiculously low RTL figures on here (because little boys tend to behave like that ) yet the amount you can actually live with in the real world may be far greater.

Absolutely true. Sometimes I wonder what is going one with some claims. I remember a claim of .1 ms which I still have trouble believing.

Jonbouy

Here's a little app to do that. Read the instructions for use.

http://centrance.com/downloads/ltu/

... many claim ridiculously low RTL figures on here (because little boys tend to behave like that ) yet the amount you can actually live with in the real world may be far greater.

My Quad set at 64 samples at 48,000 kHz shows 9 ms ASIO RTL reported, the loop back shows the actual to be around 7.4 ms, it's rock solid at that and causes me no timing issues.

Frickin' sweet Mr. Bouy! Nice utility!!! I LOVE IT!!!!!



But ... I have to say ... X1 was only off .3ms which is less than the .5ms variance Centrance says their utility can exhibit.

WOW!

Thanks everyone, I really appreciate the ideas and links. FYI, I have looked at the system with the latency software and my average measurement is about 120us. I've used ASTRA32 to look at my system and USB ports in particular. I'm getting 480mb/sec throughput to the quad capture on a USB 2.0 port connected to the MB. I'll try all the ports to be sure, there's 14, including a self powered USB 2 hub.

I'm finding the numbers being reported in X1's preferences a bit misleading. By that, I mean a reported latency of 15ms can feel more responsive than a set up where the reported latency is 5ms. Admittedly, it's all Geek to me.

I will go through the suggestions and see what I can do.


**Free tip of the day

If you really like the Fender tweed amp sound and want your repro Bassman to kick a** try this.

Get the high voltage under control by using a 5U4GB rectifier tube. The amp will feel much looser due to the reduction in B+ voltage and the increase in B+ drop under load.

Pick up a set of current production Tung Sol 5881 power tubes. NOT any 5881. The Tung Sol is a 23 watt tube just like the original and has the sweetest tone for guitar. It's also virtually identicle to the original in appearance.

When you bias the amp don't run the tubes too hot. Set them to idle at about 12 - 14 watts. At this point you should be so close to the real deal that Leo will be smiling somewhere.

I'm assuming you are talking about the DPC Latency Checker when you said you are seeing 120µs. That's very high. You should be seeing around 10µs where it says "Current Latency".