3-way front crossover, active or passive? - diyAudio
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 14th August 2010, 08:27 PM   #1
Jonas83 is offline Jonas83  Sweden
diyAudio Member
 
Join Date: Jul 2010
Default 3-way front crossover, active or passive?

IŽam thinking of setting up a 3-way front system.
IŽve read some similar threads within the subject, but still confused.

Should i use passive or active crossovers? in my mind active would be better since i need/want an 18db slope, a passive filter like that contains some components.... the possibility of level adjustment via active filters is also intresting.

However, my active crossover knowledge is quite small.....

Setup:
1 x 2ch amp (6,5") + 1 x 4ch amp (mid + tweeter)

Nice 6,5" (not decided yet), DLS UP2.5" driver, Mb quart QM19HX

--600hz|600hz-5100hz|5100hz--

Any ideas? = )
  Reply With Quote
Old 15th August 2010, 10:01 AM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I'd suggest that you use active crossovers. Do the amps have crossovers built in?
  Reply With Quote
Old 15th August 2010, 10:41 AM   #3
Jonas83 is offline Jonas83  Sweden
diyAudio Member
 
Join Date: Jul 2010
Ok. Yes they do but only lowpass on the 4ch. I do want to change amps later on so it would be nice to just swap them at that point. Any suggestion on components? (have a couple of analog devices OP27 somewhere) and maybe schematics with level control that is any good? = ). Never been building active before, only passive. so help is appriciated (sorry if my english is bad = P)

//J
  Reply With Quote
Old 15th August 2010, 04:07 PM   #4
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
You may want to purchase a head unit with a built-in DSP. The ones with a microphone can automatically equalize the system.
  Reply With Quote
Old 15th August 2010, 10:53 PM   #5
Jonas83 is offline Jonas83  Sweden
diyAudio Member
 
Join Date: Jul 2010
DSP in all honor, i usally do i with Truerta software + mic. I have a nice kenwood HU and manually adjust the eq. Thats kind of the fun part, i want to know how,when and why all that falls away using auto-dsp+mic it feels like. Maybe iŽam a little oldschool there but as long as i get it the way i want iŽam pleased. Of course there is alot of better HU avalible, but the quiestion is do i really really need it? and would it make 500$ worth of difference?
  Reply With Quote
Old 15th August 2010, 11:28 PM   #6
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I assumed that you wanted the most precise reproduction when you mentioned the OP27s. If you like your current head unit and have an RTA with an accurate mic, that may be all you need for equalization.

Maybe someone here can suggest a specific crossover. A lot of people like the Audio Control stuff but in the past, they were impossible to get working properly without engine noise. Maybe the new stuff is better. Some of the older, high-end (non-digital) crossovers from Pioneer or Sony may be what you're looking for.
  Reply With Quote
Old 16th August 2010, 03:17 PM   #7
Jonas83 is offline Jonas83  Sweden
diyAudio Member
 
Join Date: Jul 2010
The OP27Žs wasnŽt mentioned for this project, but i do have them..... I think if i just get the crossovers right it will produce a good result with even if it demands a little tricky tricky = ). The real problem is still the active filter layout, passive i know.... active i donŽt. IŽve had my eyes open for some time now after an older crossover but they is not easy to find, and those i did found where way to expensive compared to digital new ones and often in a really bad condition. and yes... engine noise can be a little annoying.
  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
Passive or Active Crossover before amp Zero One Parts 1 6th May 2009 01:17 PM
Changing a passive crossover to active soundengine355 Multi-Way 101 18th August 2008 05:50 PM
Passive crossover into active crossover hahfran Multi-Way 16 10th February 2008 07:16 PM
subwoofer crossover passive and active yikchean Subwoofers 3 3rd December 2006 03:18 PM
using passive crossover before amps to active biamp? cowanrg Multi-Way 7 29th October 2004 02:45 AM


New To Site? Need Help?

All times are GMT. The time now is 06:47 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