Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 19th November 2007, 06:05 AM   #1
diyAudio Member
 
Join Date: Nov 2007
Default Audison & PG amp crossover help!

I'm hooking up 4 dedicated amps to my Ford Focus. My main problem is I am have difficultly in understanding the selection buttons to the crossover on both the Audison LRX2 amps and PG Xenon amps.

What I am trying to do is:
Tweeter - Audison LRX 150 to see 20K to 3500
Mid - PG Xenon 100.2 to see 3500-200
Midbass - Audison LRX 250 to 200-80
Sub - PG Xenon 400.1 to see 80- 20

For those folks familiar with Audison amps, you may know what I running against. There is a combination of buttons that will make this work. I hope I am clear in my direction. Thanks
  Reply With Quote
Old 21st November 2007, 06:51 AM   #2
diyAudio Member
 
Join Date: Nov 2007
What no love or help?! This is the frustrating part... the wait.
  Reply With Quote
Old 21st November 2007, 04:49 PM   #3
shagone is offline shagone  United States
diyAudio Member
 
Join Date: Apr 2007
you could start by posting pictures of the controls of each amp or by posting what each amp has on it. that will help us to help you. and by stating exactly what you don't understand. most amps can't do what you are trying to do and may require more complex outboard x-overs but these amps might. you just have to let us know what you have available because most of us don't have these exact amps in front of us.
  Reply With Quote
Old 21st November 2007, 08:38 PM   #4
PM650 is offline PM650  United States
diyAudio Member
 
Join Date: Jul 2005
Location: Tennessee
I just took some time to look at the manuals and this is not doable without an external crossover. You will need a single external high-pass filter to feed your lrx-250; most any headunit will be able to do this, you will just need to run an extra pair of cables.

Here's a summary of how the filters and pre-outs work on your amps:
The phoenix golds can be used in high or low pass or both (band-pass) on the speakers connected; the pre-outs aren't filtered for any setting.
The audison's have selectable high/low pass for the speakers; the pre-outs are the opposite of the amplifier signal (high pass for speakers means low-pass for the pre-out and vice versa); the high/low filters can be disabled, allowing the amplifier to run full range and the pre-out to be filtered or to run the amplifier filtered with a full-range pre-out.

Hope this helps.
  Reply With Quote
Old 22nd November 2007, 05:12 AM   #5
diyAudio Member
 
Join Date: Nov 2007
Thanks Guys for responding to my questions. I enclose pics of the amps in question and the system itself.

Thanks PM650 for taking the time in researching my problem. I realize too the need of external crossover for the mid-bass Audison LRX amp. I do have a three way passive network which may work (mid: 4.5-500, mid-bass: 700-20).

Could this work?

On the PG mid amp, I could set high pass around 500 and low pass overlap around 500 on this amp.

Could this work?
  Reply With Quote
Old 22nd November 2007, 05:12 AM   #6
diyAudio Member
 
Join Date: Nov 2007
Sorry here is the pics
Attached Images
File Type: jpg a3.jpg (83.2 KB, 68 views)
  Reply With Quote
Old 22nd November 2007, 09:08 AM   #7
PM650 is offline PM650  United States
diyAudio Member
 
Join Date: Jul 2005
Location: Tennessee
By passive network, are you talking about a preamp level non-active (i.e. unpowered) crossover? Personally, I'm not a fan of those and wouldn't recommend it, but its your setup.

Also, you said its a 3-way but you listed two band-pass frequency ranges? I'm a bit confused here.

Increasing the crossover point between mid & midbass would increase power handling on the mid a bit, expecially if its a small driver.
  Reply With Quote
Old 22nd November 2007, 04:11 PM   #8
diyAudio Member
 
Join Date: Nov 2007
Sorry about not mentioning the remainder crossover point this is 4.5K to 20K.

I agree with you, I'm not a fan of passives either, but I do have it on hand to continue on with the set-up until I change it for an active unit.

Here is pic of the trunk set-up.

So, it sound like I will find a 4 way active crossover and incorporate that into the system, then I have all the flexibility I need to run the system properly.
Attached Images
File Type: jpg a4.jpg (62.2 KB, 55 views)
  Reply With Quote
Old 22nd November 2007, 04:12 PM   #9
diyAudio Member
 
Join Date: Nov 2007
"Increasing the crossover point between mid & midbass would increase power handling on the mid a bit, expecially if its a small driver."

Yeah, it looks like i will have to do this. The mids are the 6.5 Illusion Audio LM-6 drivers, so there won't be any major power benefit here. They use upto 60 watts on those.


Any good 4 way crossover unit you guys can recommend?
Attached Images
File Type: jpg a5.jpg (62.6 KB, 53 views)
  Reply With Quote
Old 23rd November 2007, 01:58 AM   #10
PM650 is offline PM650  United States
diyAudio Member
 
Join Date: Jul 2005
Location: Tennessee
Can't recommend any brands personally; car audio isn't my area really. The passive should work fine if you decide to use it; frankly, I would use the integrated active crossovers and only use the passive for what the amp wont do (i.e. use the passive for the midbass and set the midbass amp crossover at 80hz highpass to get 80-700).
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Crossover for vifa 2 way setup - how can I find out what this crossover is doing? Tino Multi-Way 11 17th May 2009 04:21 AM
Audison,Tru, Alpine, Pioneer,Eclipse ThumperX Car Audio 0 21st February 2009 03:04 PM
Audison LrX 6.9 Madmike2 Car Audio 0 6th April 2008 01:47 AM
audison vrx (old vs newer versions) peter190e Car Audio 2 11th November 2007 12:33 PM
Can you hear the crossover point of a speaker with a well-designed crossover? 454Casull Multi-Way 11 2nd April 2004 05:48 AM


New To Site? Need Help?

All times are GMT. The time now is 04:52 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2