Thinking of going active.
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Thinking of going active.
I've heard het many wonders of active crossovers and it's to the point where i'd like to try it out. My setup is currently running the following:
ERA G320 processor (Front/Rear/Sub RCA outputs)
(2) Alpine MRP F250 Amps running bridged (I could change the wiring to run x4 so each driver gets it's own channel)
(2) Alpine SPX 177r comp sets.
2 questions:
a) If i were to go active, would I still need to keep the passive crossovers?
b) Looking for a quality two 2 ch 2-way crossovers. (to keep things neat, I'd like to have the fronts and rears to have seperate xovers that i would mount under the amps. What do you guys reccomend?
ERA G320 processor (Front/Rear/Sub RCA outputs)
(2) Alpine MRP F250 Amps running bridged (I could change the wiring to run x4 so each driver gets it's own channel)
(2) Alpine SPX 177r comp sets.
2 questions:
a) If i were to go active, would I still need to keep the passive crossovers?
b) Looking for a quality two 2 ch 2-way crossovers. (to keep things neat, I'd like to have the fronts and rears to have seperate xovers that i would mount under the amps. What do you guys reccomend?
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
My Processor has a subwoofer crossover (though i have yet to figure it out) and my CDA 7998 head unit has most of it's processing being taken over by the ERA G320 with an Ai net connection. I also have a seperate bass processor for the sub (Epicenter 150)
Le Mans Master
Joined: Jun 2004
Posts: 5,572
Likes: 4
From: Los Angeles Ca
see if you can sell the era g320 and upgrade to the h701 (can be found pretty reasonably used on ebay) this will handle all of your processing needs/wants/desires.
or while you're saving your money you can wait to hear my impressions of the behringer dcx2496 w/12v mod.
brand new you can walk away from that @ about $400 and it's supposed to be easier to use then the alpine and it has a more intensive eq system
oh...another one to check out is the ppi unit that fej is using
or while you're saving your money you can wait to hear my impressions of the behringer dcx2496 w/12v mod.
brand new you can walk away from that @ about $400 and it's supposed to be easier to use then the alpine and it has a more intensive eq system
oh...another one to check out is the ppi unit that fej is using
Last edited by scott_fx; Sep 18, 2007 at 05:50 PM.
Pro
Joined: May 2007
Posts: 744
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From: WayTooCloseToNY Northeast PA
Yeah, I sound like a broken record, but...
a) You still need a few passive components to do this correctly (most people don't, IMO).
b) Whatever you use, it should have integrated level control and not just frequency. If you're really serious, get phase control and more than 12dB/octave.
a) You still need a few passive components to do this correctly (most people don't, IMO).
b) Whatever you use, it should have integrated level control and not just frequency. If you're really serious, get phase control and more than 12dB/octave.
Le Mans Master
Joined: Jun 2004
Posts: 5,572
Likes: 4
From: Los Angeles Ca
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
Yeah, I sound like a broken record, but...
a) You still need a few passive components to do this correctly (most people don't, IMO).
b) Whatever you use, it should have integrated level control and not just frequency. If you're really serious, get phase control and more than 12dB/octave.
a) You still need a few passive components to do this correctly (most people don't, IMO).
b) Whatever you use, it should have integrated level control and not just frequency. If you're really serious, get phase control and more than 12dB/octave.
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Melting Slicks
Joined: Dec 2004
Posts: 2,394
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From: Bay Area CA
Spkr is referring to proper impedance control via the passive crossovers, which active units do not account for (at least that I know of). Home theater yes IMO, car audio not really necessary if you are active. The environment has enough issues without worrying about the impedance curve (again IMO).
If you are going active, I recommend using the 7998 in 3 way mode, dropping the passive boxes altogether (which likely do not account for impedance anyway), and using the HU to handle all of your processing needs, at least at first. If you still feel you need some more tuning capability than the H701 scott recommended is a great option, just make small changes as Spkr recommends. Lots of ways to improve, or degrade your system's sounds in that little box.
I personally am quite happy with my Eclipse 8053 as an all-in-one solution for processing/eq/ta. Worth looking into with your 7998 and does not cost you any more money.
Fej
If you are going active, I recommend using the 7998 in 3 way mode, dropping the passive boxes altogether (which likely do not account for impedance anyway), and using the HU to handle all of your processing needs, at least at first. If you still feel you need some more tuning capability than the H701 scott recommended is a great option, just make small changes as Spkr recommends. Lots of ways to improve, or degrade your system's sounds in that little box.
I personally am quite happy with my Eclipse 8053 as an all-in-one solution for processing/eq/ta. Worth looking into with your 7998 and does not cost you any more money.
Fej
Burning Brakes
Joined: Feb 2006
Posts: 796
Likes: 4
So I just ordered the Arc Audio MX-3, Dynaudio 172 woofers and Seas tweets. I am going to go active with this. What passive components do I need to do it right?
I have the DNX7100 which I do not believe has a 3-way mode so I will have to do this with the MX-3.
Shan
I have the DNX7100 which I do not believe has a 3-way mode so I will have to do this with the MX-3.
Shan
Team Owner
Joined: Feb 2000
Posts: 51,504
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From: Sacramento CA
impedence is pretty flat on the seas neos in the range you are using too. MHO, I wouldn't worry about it.
not sure why you got the mx3 over the mx1?
Team Owner
Joined: Feb 2000
Posts: 51,504
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From: Sacramento CA
Burning Brakes
Joined: Feb 2006
Posts: 796
Likes: 4
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
Burning Brakes
Joined: Feb 2006
Posts: 796
Likes: 4
Le Mans Master
Joined: Jun 2004
Posts: 5,572
Likes: 4
From: Los Angeles Ca
i'm not agreeing nor disagreeing with it, i was just assuming he meant more then a zobel. I have no experience with any of the diy passive circuits, i dont know how much a benefit i'd actually hear from them. but it's fun to learn 
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Scott: From what I've read regarding the owners's manual the PXA H701 only has a 2 way active crossover for the fronts.
...nooooo
Since i'm using the ERA G320, my 7998 won't give my Xover adjustments. I do however get seperate 7 band equalization for front and rear speakers from the ERA g320.
Look on the bright side.....you can't drown in a stereo 
...noooooSince i'm using the ERA G320, my 7998 won't give my Xover adjustments. I do however get seperate 7 band equalization for front and rear speakers from the ERA g320.