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Francious70 
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Posted: March 04, 2005 at 4:29 PM / IP Logged  
I don't see a need for changing the crossovers on the fly. Once you find a point that is the most efficient for your speakers, you should leave it there.
Paul
racer427 
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Location: United States
Posted: March 04, 2005 at 5:39 PM / IP Logged  

I am now looking to go a different route possably. I might purchase an Alpine CDA_9833 and use the built in 3 way crossover in the radio vers. going with a seperate crossover. What are your opinions there?

  Chris

Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds
Francious70 
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Joined: July 26, 2004
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Posted: March 04, 2005 at 5:47 PM / IP Logged  
Less components = less noise. If you can select the crossover points then I'd say go with it. (When I say select the points I dont mean from a preset list of points. e.g 60, 80, 125 for lowpass ect.)
Paul
racer427 
Silver - Posts: 381
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Joined: August 04, 2004
Location: United States
Posted: March 04, 2005 at 5:49 PM / IP Logged  

The 9833 has a fully adjustable crossover, So, This is a good thing.

  Chris

Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds
racer427 
Silver - Posts: 381
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Joined: August 04, 2004
Location: United States
Posted: March 04, 2005 at 5:52 PM / IP Logged  

Here are the specs for the crossover.

6-Position Digital Crossover with Adjustable Slope: The digital crossover allows you to choose from the following modes:

  • 2-way Mode: A continuously variable 20-200Hz low-pass filter is available for the subwoofer outputs, and a continuously variable 20-200Hz high-pass filter is available for the front and rear preamp outputs. The slope for each filter can be set to 6, 12, 18, or 24dB/octave, or Flat. The level for each filter can be adjusted from 0 to -12dB.
  • 3-way Mode: A continuously variable 20-200Hz low-pass filter is available for the subwoofer outputs, and a continuously variable 1-20kHz high-pass filter is available for the front preamp outputs. The rear preamp outputs have a continuously variable 20Hz-20kHz low-pass filter and a continuously variable 20-200Hz high-pass filter. The slope for each filter can be set to 6, 12, 18, or 24dB/octave, or Flat. The level for each filter can be adjusted from 0 to -12dB
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds
kfr01 
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Joined: April 30, 2003
Posted: March 04, 2005 at 6:00 PM / IP Logged  
Well... I'd double check their definition of "continuously variable."
Eclipse also calls their head unit xo's that, but I only get like 63hz/80hz/100hz/160hz/200hz/ to 20khz etc....
Anyway, it ends up being _near_ variable. Which might be fine, but I'd like to set my crossover at 2.4khz. I can't. The closest I can get is 2.5khz. Something to think about.
New Project: 2003 Pathfinder
racer427 
Silver - Posts: 381
Silver spacespace
Joined: August 04, 2004
Location: United States
Posted: March 04, 2005 at 6:08 PM / IP Logged  

I just checked up on that and the Alpine is the same, near variable. Bit, I don't think that will be a major issue. I just want to get away from having to install too many components.

  Chris

Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds
kfr01 
Gold - Posts: 2,121
Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: April 30, 2003
Posted: March 04, 2005 at 6:19 PM / IP Logged  
racer, I understand, I use my head unit at 2.5khz anyway for the same reason. :-)
New Project: 2003 Pathfinder
racer427 
Silver - Posts: 381
Silver spacespace
Joined: August 04, 2004
Location: United States
Posted: March 04, 2005 at 6:40 PM / IP Logged  

But, in your opinion, should I go with the head unit or seperate crossover?

  Chris

Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds
kfr01 
Gold - Posts: 2,121
Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: April 30, 2003
Posted: March 04, 2005 at 6:43 PM / IP Logged  
I use my head unit. I see no reason for the separate xo unless you want to go 4-way or need different xo points.
New Project: 2003 Pathfinder
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