| Digital inputs on DSP and a few other questions [message #321922] |
Mon, 12 May 2008 06:09  |
 Magnus "Magic" Johansson
Messages: 131
Registered: April 2004
Location: Vantaa, Finland |
Has No Life |
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Hello all
I have the need  to upgrade from a DCX2496 to something better and have been reading a "million" threads about "260 vs. minidrive", "XTA vs. Xilica", "favourite DSP", "DCX vs. DRPA" and learned a lot.
I am leaning towards the BSS FDS336T, Xilica 3060, or maybe DBX 260, but I would like to have the option of aux fed subs, and the DBX is only 2 inputs. I am trying to find these used so the pricerange is quite flexibe, quality is more concern than price.
There are a few questions left:
- how "important" or beneficial do You see the possibility to use digital signals between mixer and DSP? Today I use AES/EBU from the Roland VM7200 to the DCX.
- I have set up the DCX with the EAW recommended Xover-, delay- and EQ-settings for the KF300e's, but read somewhere that DSP's use different algoritms for the same settings, how much could this actually influence the response ?
[Updated on: Mon, 12 May 2008 06:09]
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| Re: Digital inputs on DSP and a few other questions [message #321982 is a reply to message #321922 ] |
Mon, 12 May 2008 11:01  |
Tim McCulloch
Messages: 3617
Registered: April 2004
Location: Wichita KS USA |
Has No Life |
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Hi Magnus-
Avoiding multiple AD/DA conversions is a good thing. AES/EBU is a good thing IMHO.
Different DSP engineers use different ways to create the filter topologies which probably results in slightly (or very) different phase responses. Since you're looking for uniformity of phase response in the acoustic crossover, you generally can't just plug in the numbers and run. Also, some loudspeaker makes specify filter width in Q, other in bandwidth, and others in octaves or fractions thereof. You will need to convert. You will also need to verify the phase response with Smaart or a similar FFT program.
Have fun, good luck.
Tim Mc
"It's not your fault if he can't play the part. Let him suck out loud."
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