Crackly 896--bad MOTU drivers in Mt. Lion 10.8..???

[MELTHEDOG13]

I've had an 896 for years running on a Mac Pro 1,1. The 896 received full BLA mods about 6 years ago and has been working like a champ. I just bought a new Mac Mini. Migrated everything over from my Mac Pro. All my projects seem to be opening and playing back fine....BUT when I try to record new audio, the input signal has a digital crackling sound. It's not constant and it only happens when there is audio input coming in. The meters are no where near clipping and the source signal is clean. It's not an "overdriven" distortion, but more of a digital bit-crushing sound. If I record the audio, the crackling gets recorded with it. It doesn't matter if I try to record audio into a new project or en existing one. Changing the buffer size doesn't effect it....Then I tried flipping the 44.1/48 switch on the 896 (part of the BLA mod) from 44 to 48. Under DP hardware settings I then changed the bit rate from 44 to 48.....And the crackling went away. Switch everything back to 44.1 and the crackling returns.....

I've got the 896 daisy chained via firewire into a UAD Satellite DUO.

Can ANYBODY shed some light on what the issue could be...???!!!

Many thanks in advance.....

William

[MELTHEDOG13]

Quick update. I tried the 896 directly into my Mac Mini (not running thru the Satellite firewire bus) and still had the same issue. I then hooked the 896 up to my old Mac Pro system (OS 10.6) and had no problem at all--no digital crackling on the audio input in 44.1 or 48. This seems to point to an issue with the MOTU drivers and Mt. Lion, no...???

[mikehalloran]

This seems to point to an issue with the MOTU drivers and Mt. Lion, no...???

Not the way that I read it.

Then I tried flipping the 44.1/48 switch on the 896 (part of the BLA mod)

What does BLA say?

[MELTHEDOG13]

I ran the 869 for years on my Mac Pro (OS 10.6) without problem, switching between 44/48 as needed. Now using it with my new Mt. Lion Mac Mini machine, its crackly audio at 44.1.