Imac + project mix + liquid mix

[vitto]

Hello there,
I would like to buy a liquid mix ( focusrite ) but my set up is quite small:
PT-M with project mix I/O on iMac.
Someone told me that my Mac has yes 2 firewire but both on the same bus so that probably will cause problems ( too load for a single buss )
Can someone confirm this ?
Is there someone with both devices working with iMac ?
Thanks in avance :)

[marcioguitar]

I have Mac Pro + Digi 003 + liquid mix, I had to install a extra firewire card in order to have a separated buss, otherwise you start to get drops and error messages, also you have to realize that you need 1 firewire port for your project mix I/O, another one for your external driver, another one for your liquid mix, and hubs are not recommended.

[vitto]

Thanks a lot, I will look for some good channel strip native to replace the loss