Phase
1000 Watt CAFz'r
Joined: May 2002
Posts: 1,649
Tuning for hi-end is a nitemare. Everytime you touch anything, you have to go back and pretty much redo/check everything else. Change your x-over, and it screws your time alignment, etc, etc, etc. It's nutz. You basically have to tune everything, make an adjustment, retune everything, make an adjustment and so on about a billion times............ assuming you want to be perfectly high-end like Defro 
New 900 will soon have a slot where you pop in a quarter and out pops bacon and eggs with a side sausage. [img]graemlins/bow.gif[/img]
New 900 will soon have a slot where you pop in a quarter and out pops bacon and eggs with a side sausage. [img]graemlins/bow.gif[/img]
Guest
Posts: n/a
Originally posted by defro13:
dukk, you mean to tell me that not only had you never used or heard a h900 but that you didnt even know the capabilities of the it and were so outspoken about its value, im amazed you cant hear my laughter from wherever you are.
dukk, you mean to tell me that not only had you never used or heard a h900 but that you didnt even know the capabilities of the it and were so outspoken about its value, im amazed you cant hear my laughter from wherever you are.
Anyway, all I saw is a 0/180degree setting. woo. As cutting edge as swapping polarity. Where's my Platinum card - that did it for me [img]graemlins/freak.gif[/img]
So answer the question Mr. Expert - does it offer variable phase? From what I can see the answer is no.
Guest
Posts: n/a
youve seen a processor for car audio that has 11 individual burr brown da's, 171 band graphic eq, 68 band parametric eq, varialble 6,12,18,24,30 db/octave 7 channel x-over, time delay, hdcd capabilities, PHASE ADJUSTMENT, its own tuning software with pc control, dts decoding, memory preset, auto eq capabilities and all this with a groovy remote, all in one convienient, valued packed beautiful aluminum case, where else have you seens such a thing
Guest
Posts: n/a
Originally posted by defro:
youve seen a processor for car audio that has 11 individual burr brown da's, 171 band graphic eq, 68 band parametric eq, varialble 6,12,18,24,30 db/octave 7 channel x-over, time delay, hdcd capabilities, PHASE ADJUSTMENT, its own tuning software with pc control, dts decoding, memory preset, auto eq capabilities and all this with a groovy remote, all in one convienient, valued packed beautiful aluminum case, where else have you seens such a thing
youve seen a processor for car audio that has 11 individual burr brown da's, 171 band graphic eq, 68 band parametric eq, varialble 6,12,18,24,30 db/octave 7 channel x-over, time delay, hdcd capabilities, PHASE ADJUSTMENT, its own tuning software with pc control, dts decoding, memory preset, auto eq capabilities and all this with a groovy remote, all in one convienient, valued packed beautiful aluminum case, where else have you seens such a thing
But since you are avoiding directly answering the question I will assume the answer is no it does not have more than a polarity adjustment. That or you don't know.. [img]graemlins/dunno.gif[/img]
The value packed part was funny though [img]graemlins/thumb.gif[/img]
Yankee
Joined: Oct 2003
Posts: 3,599
First, ALL drivers do NOT have uniform phase response. That is, they don't reproduce all frequecies in absolute phase. What tends to happen, is that there is increasing delay in phase response as frequency increases. For example, a midrange may reproduce a 300hz tone with a 30 degree "lag" versus the input signal, and 180 degree "lag" when reproducing a 1khz signal. Think of it as a big downhill slope where the driver is further out of phase (with relation to input signal) as freqency increases.
Well it's going to get worse. You see, using 2 drivers with overlapping frequency response also means they have overlapping phase response. This wouldn't be too bad if the energy recieved by the ear did not include near field reflections. Without near field reflections, what your ears would hear would be a summed phase response, with timing cues
Well it's going to get worse. You see, using 2 drivers with overlapping frequency response also means they have overlapping phase response. This wouldn't be too bad if the energy recieved by the ear did not include near field reflections. Without near field reflections, what your ears would hear would be a summed phase response, with timing cues
I think this is why people like (some) horns and planar drivers. The work a fairly large freq. band and the critical point for both is the crossover region.
I have heard good sounding speakers with steep slopes (Joseph Audios predecessor) but I usually prefer a gentle crossover slope. Funny how actives always tend to be 18db/octave or steeper
I try to set up my car system to be a near field listening experience, with direct sound and minimal reflection from the drivers.
Yankee
Joined: Oct 2003
Posts: 3,599
Seriously does ANYONE dislike the sound of planers or for that matter ribbons? (I didn’t like Sound Labs a few years ago too rolled off in the HF). As a genre I think their only real shortcoming is, of course, bass and ultimate volume
