Parametric vs graphic, dta

[grunge311]

I am in a spot where I can choose one of three setups for my truck regarding DTA and EQ. I will list them because people seem to reply more to lists they can skim rather than burying things in a paragraph.

1. 30 band 1/3 octave graphic EQ + limited (left side / right side) time alignment. The time alignment would align the left and right only, and not separate the tweeter and midwoofer, which in our stock location are very far apart.

2. 3 band parametric EQ with advanced time alignment. This time alignment would align each driver, but I would only have 3 bands of parametric EQ that would be varable (kenwood deck EQ kvt-915dvd)

3. 30 band + advanced time alignment. I can have it all, but it means using a whole separate sound processor and I would lose all the control up front or have to install a 2nd up front sound processor, and would negate many things my HU would do internally. This was my plan A but I am trying to avoid this.

Any other suggestions? What I am trying to do is go active off of my head unit and add a 30 band EQ. I can run the tweets of the front, and the mids off of the rear and gain advanced time alignment, but then won't be able to add a 30 band, (or only add it to the tweets, or rear) unless I use two or if there is a product out there that would allow me to run front and rear RCAs into it, do a 30 band graphic, while keeping the channels discrete, then outputting as fronts and rears so I can amp them discretely.

[t22a80]

What about adding a Audio Control DQX??

http://www.mobileaudiocontrol.com/de...d=5247&l1=5247

[grunge311]

I actually have that one sitting in my basement right now, and unfortunatly I just learned I need at least the DQXS for the 4 channel inputs extra inputs.

I think I will just go with the option number 3, which just seems like such a waste to duplicate all those features only to gain a decent EQ.

[Tx_flip]

Originally Posted by grunge311

if there is a product out there that would allow me to run front and rear RCAs into it, do a 30 band graphic, while keeping the channels discrete, then outputting as fronts and rears so I can amp them discretely.

Audiocontrol DQS

[t22a80]

Hmm... well your main concern is the 2 front channels so why do you need the 4ch input? Dont worry about your 2 rear channels, they should just be for rear fill anyway. You really dont need TA for that.

[Tx_flip]

In all honesty I would T/A rear fill before even considering the front stage.

[t22a80]

hmmm, that seems backwards to me... can you explain why TX?
I'm asking because I dont know. I've never messed with that stuff in previous installs. I can see it for a surround setup but thats about it.

[Tx_flip]

Though some don't bother by just cutting it out completely but to achieve a sense of ambience, rear fill is often used. Front staging, IMO, is degraded with T/A L&R to either the driver or the passenger up front. Rear signal impacts both at the same time.
Here is the write up by Wayne on rear fill.
http://www.termpro.com/articles/rearfill.html

As you read you see his primary adjustment is that of fading the signal. In my experience I've found more success delaying the signal rather than simply attenuating it (yes almost the same but I found that the volume was better and my soundstage height stabilized due to that). That is of course using processors like the older Sony ES and XES processors. Note, these are cars though and have speakers on the rear deck or quarter panel. Characteristics of our truck are quite different and ambience is not always achieved in the same way but this is something I will need to play with in the Titan.

[Tx_flip]

Back to the topic on hand and don't want to hi-jack a thread, Grunge, the DQS is the only piece I can think of for you to attain all the abilities of the headunit's T/A, which I do feel is beneficial if all drivers have T/A capability plus even utilizing the 3 band for on the fly adjustment. If you didn't want to go 30 band, then the EQS would be a step below that but this does not offer the option to control from up front...that is of course unless you installed the unit somewhere upfront.

[t22a80]

Good to know, I'll have to read that article.

I dont have any rear fill right now because its too cold for me to go out and take my back doors off. But I do miss some sound coming from the back.

[grunge311]

The reason I need a 4 channel is that I will run the front channel to the tweeters and the rear channel to the woofers, that way I can have advanced time alignment off of my HU.

The kenwood HUs have Xovers, and have time alignment between the 5 channels (2 fronts, 2 rears, and sub) but cannot time align between drivers only sets. My plan was to use the rear channels as midrange, and front channels for tweeters.

And I looked into the DQS and the EQS and they would work, but at that price I might as well use the alpine h701 I have now and just have a 2nd control unit up front.

[Tx_flip]

Well in my biased opinion...H701 is the way to go then. I like that piece. Though I've seen DQS pieces go for about 2 bills on ebay and EQS as low as 75 and average around 130ish.

[grunge311]

Yeah the h701 is bad ***, but I just hate using the h701 when my kenwood does 80% of what that unit will do. I was hoping for an easy extra 20%, the DQS would fit the bill exactly, but I already have the H701 so I might as well use it rather than try to find a deal on the DQS, waiting for shipping, hoping I didn't get scammed, all the hassles involved with ebay....

In the end the H701 is much better, I just will have two volume knobs up front, 2 eqs, 2 dtas not that big of a deal. In the future I will remember the DQS.

[lizardking]

ZAPCO DSP for the win!!

[tech12volt]

Originally Posted by lizardking

ZAPCO DSP for the win!!

i agree if the bugs are worked out of. and to what tx was sayin . i alway run rear fill mono.