Originally posted by Bghead8che
1. My processor has a Subwoofer XLR output. Is there any advantage to using this over the standard RCA output if I DON'T hear any noise or hum w/ my current setup? I would need to buy an XLR cable if I switched.
2. I noticed this right of the bat. In the manual all of the screen shots show a graph that goes from 0 DB to 100 DB. However, when actually using the software mine only goes from 0 to 87DB. Am I missing something?
3. I ended up using my processors's crossover set at 80 and the DD-18 set to 199. The processor does have the option to send a full range subwoofer signal. I own a Parasound C2 and they put a lot of work into making the crossover phase and time correct. Any reason I should switch and use the 18's crossover?
Thanks! I'll post my listening impressions soon.
We've been on and offline over the holidays, sorry for the delayed response.
In response to your questions:
1. THe XLR (or balanced) input doesn't really offer any benefit if your system is noise free as you say. All inputs are summed and go to the same A to D conversion circuit.
2. You're talking about the Y axis on the graphs, right? Sadly, this is an errata that we have since corrected. We changed the scale right before we shipped to calibrate the system and the manuals had already gone to press. The key, though is to get a flat graph +/- 3 dB (see my comments on your graph below.
3. The Parasound and DD crossovers do essentially the same thing, so there is no compelling reason to use the DD's. Regarding phase/time sync, any delay usually shows up at or around the crossover frequency as a dip, and you can use the phase settings on the setting screen to compensate.
The smaller the "Q" number the more frequencies that are affected, correct?
Yes, the smaller the Q number, the lower the "Quality" of the filter, and the more frequencies that are affected up and down from the primary frequency. A low Q is like a very wide wave and a high Q can be like a needlepoint.
Out of curiosity, what is the range of Q values that are offered?
Hi Ran, sorry for not answering your earlier post sooner...
The Q ranges from .3 to 20.0, with a default of 4.3 (the default width for third-octave centers, which is how the EQs start off). The contour filter (one for each preset - set on the settings page), actually acts as a 9th EQ, and its Q is fixed at 4.3.
Graph comments next...