Not at all, just my general opinion and comments to others.............

There are 2 sides to everything........

 

Audio control is interesting. When you set your EQ to complete flat and press in the defeat button in and out and the sound changes [img]graemlins/dunno.gif[/img]

 

Actually I was just saying that you have about the most experience on processing from what I have heard. But I can understand why you would have taken it the way you did.

Heck it provided some good discussion.


1K and 200HZ adjustments can make a world of differance.

 

just curious to know how you now how the dqxs sounds as it hasent even been released yet for sale. at ces they had a prototype but that was the only one of its kind. after talking to chris at a/c he told me about the new peice and how much better it was than the previous model, dqs. so for the record this peice isent avalible until mid feb through kars electronics in maple ridge, this processor is a 30 band digital eq with a 4 way digital xover. it has 8 presets with a costant q. the xover is selectable between 6.12.18.24. db. it has a new processor in it which is said to be more transparent that the last one and much faster. dave if you are comparing it to last yrs modle, which i beleive you meant to say, then please look at all the cars that won on the iasca and usaci sq circuit and see how many cars had a a/c eq in it as to the alpine peices. now tim on your statement about not e.q.ing the sound in a car, because there are no eqs in live recording, well dude get out of your moms basement more often and go to a concert. even better go to west van and visit mushroom studios, yep its still there. in every recording hall, studio, church, nightclub, ect. they have a eq. even the unpluged live recording have some form of e.q.ing done. mr. clark is correct in his statement that a perfect system in a perfect enviroment shouldnt need any eq. CORRECT!! i agree 100% but nothing is perfect. we have lots of glass, carpet, seats, vynil dash poor speaker locations, that damn steering wheel always seems to be in the way, ect. so i guess my philosophy on eqs is a tad diffent than yours, through proper design and the use of good equipment, i hope to smooth out the problems inherent with the car,(not my system )to help it to sound better. and isent that what we are all after anyway?

 

Randy reread my statement.............unamplified live music.............you can't eq a instrument when it's not electronically hooked up to something.........

 

Just to toss my .02 in there, my truck has a very bad 200 Hz peak especially where my head sits (maybe that's why the millions of 6x9s on booster eqs that were installed in 73-87 Chevys throughout the 80s and 90s always sounded wicked boomy but that could have been the $19 0.25 cu. ft. 6x9 boxes behind the seat too lol). I have an elec. 4-way Alpine crossover and an Alpine 7 band fully parametric eq. When trying to use the eq to smooth out the peak, I couldn't get the sound I was looking for. When using the xover instead to provide a gap between the 7s and 4s in that range, I got a way better response.

 

Sux, I've found the same as I've mentioned before.

Maybe I should coin and patent the term "mechanical EQ". This is what most of you are talking about doing, as part of the install, independant of the electronics used.

As all of you posting on this thread have illustrated, there is some need for flexibility in choosing X.O. points and slope. There are some units that offer the former but not the later. This is one of 2 drawbacks I found of the DQX. The second, and more important drawback of the DQXs functionality, was that I couldn't indeppendantly adjust X.O. points between overlapping signal outputs. I couldn't for example, run the tweeter from 7khz up, and the midrange from 4.5khz down. I admit, that the average stereo user isn't going to find the above an issue.

Some of us do though...

Mechanical EQ:
-Driver location
-Driver Angle
-Driver enclosure volume
-Driver baffle mounting (recessed, flush, surface mount)
-Damping properties of the baffle
-Damping properties of the enclosure internally
-Damping properties of the enclosure externally
-Reflective properties of the materials and structure close to the driver.
-Refractive properties of the materials and structure close to the driver
-Ambient noise sourced inside the car
-Ambient noise sourced outside of the car

Have I missed anything?

Adam

 

Well in AQ's or Alpine's defense that is fairly common, and is part of my "amps have a sound quality" rant. The fact that there is a connection into and out of the processor, and that there are 'passive' circuits involved should affect the sound (negatively usually but sometimes the sound seems improved but both are deviations from neutrality). Slow/n\low I also use that technique for evaluating how a piece of equipment affects the signal path, the less editorializing a piece of equipment does to the signal the better.

 

I am trying to eliminate all electronic EQ in my system by doing the crazy x-over points and L-pad technique. Some success. I am using mechanical EQ through material selection: different fabrics, carpets, vinyl etc. to achieve flattish response. Different fibre sizes in the carpet, different materials (i.e. wool or poly) of fabric have different absorption and reflection characteristics. It is fun and educational, and it is a great way to dick up the appearance of your car. I have been obsessing over the speaker cabinets and the back-wave of the driver by using different materials inside the kick panel to achieve the right level of damping and detail and bass authority.


But this has nothing to do with the AQ sorry, thread hijack successful!