Peter.
See my post about d8b and Cubase. I posted a lot of pertinent information about this sort of setup.
I also have a Focusrite LS56. You need to use a 75ohm cable with BNC connectors and use the LS56 as the master clock. So, connect the Word Clock out from the LS56 to the Word Clock in on the d8b. Go to Sync setting in the Setting menu on the d8b and make the Mackie sync to Word Clock. That should free up your crackling noises. As for the audio, what sort of tape i/o cards do you have? My setup has 1 analog i/o and 2 adat i/o. If yours is the same, using the db25 to TRS snake, connect all your analog outputs (1-8) to the line inputs of the LS56. And use optical cables to hook up tape out 9-16 and 17-24. You will have to route your d8b channels to tape outputs. For simplicity sake, I will assume that you will assign channel to channel. 1-1, 2-2, 3-3 and so on. Above the TIMECODE display, press the button that says ROUTE TO TAPE. Next, press the select button for Channel 1, then Press the ASSIGN button on channel 1. You can route Any channel to Any output using this method. Now, within ProTools, your first 8 inputs will be the Analog sends 1-8. The next 2 will be the SPDIF inputs on the rear of the LS56. The next 16 will be the ADAT 1/2 (9-16, 17-24) and then the last 2 are the DSP "loopback" channels that you can route "DAW Return" channels to within Saffire Mix control panel.
Clocking the devices is KEY. You don't necessarily need to use the WORD Clock as your Sync Master. You can use SPDIF out. Just make sure that you use a HIGH QUALITY 75 RCA-RCA video-type cable. Monster Cable works best and can be readily purchased at a Best Buy or a WalMart. If you have the Apogee Clock card installed (which, if you don't you SHOULD), you can opt to use the d8b as your Clock Master. In Which case, using either the Word Clock or SPDIF, reverse the connectors (ie.. d8b word clock out/spdif to the LS56 word clock in/spdif in) and within Saffire Mix, assign the Sync Source to the respective input.
You can get some info on Sync and Clocking here:
http://www.sweetwater.com/expert-center ... 08/03/2001I hope this helps. Also, check out my other post about my setup here:
viewtopic.php?f=2&t=775Happy Tracking.
Tavon Markov
Horizontal Experiment ProductionsErie, PA
d8b Tape Out to Liquid Saffire Input Listd8b Tape Out 1 ------> 1 - Analog 1
d8b Tape Out 2 ------> 2 - Analog 2
d8b Tape Out 3 ------> 3 - Analog 3
d8b Tape Out 4 ------> 4 - Analog 4
d8b Tape Out 5 ------> 5 - Analog 5
d8b Tape Out 6 ------> 6 - Analog 6
d8b Tape Out 7 ------> 7 - Analog 7
d8b Tape Out 8 ------> 8 - Analog 8
---------------------------- 9 - SPIDF L
---------------------------- 10 - SPDIF R
d8b Tape Out 9 ------> 11 - ADAT A 1
d8b Tape Out 10 ------> 12 - ADAT A 2
d8b Tape Out 11 ------> 13 - ADAT A 3
d8b Tape Out 12 ------> 14 - ADAT A 4
d8b Tape Out 13 ------> 15 - ADAT A 5
d8b Tape Out 14 ------> 16 - ADAT A 6
d8b Tape Out 15 ------> 17 - ADAT A 7
d8b Tape Out 16 ------> 18 - ADAT A 8
d8b Tape Out 17 ------> 19 - ADAT B 1
d8b Tape Out 18 ------> 20 - ADAT B 2
d8b Tape Out 19 ------> 21 - ADAT B 3
d8b Tape Out 20 ------> 22 - ADAT B 4
d8b Tape Out 21 ------> 23 - ADAT B 5
d8b Tape Out 22 ------> 24 - ADAT B 6
d8b Tape Out 23 ------> 25 - ADAT B 7
d8b Tape Out 24 ------> 26 - ADAT B 8
------------------------------ 27 - Loopback L
------------------------------ 28 - Loopback R