Setting up a 3-way system - 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 29th March 2006, 03:42 AM   #1
LEESTER is offline LEESTER  United States
diyAudio Member
 
Join Date: Mar 2006
Location: LONGWOOD
Default Setting up a 3-way system

I'm looking at adding a mid-bass / sub-woofer driver to an existing set of components to help out with some lower freq. The components have a passive crossover , i would need to add a cap and coil to the new driver.
What info do I need to calculate the req'd elements. Please excuse the noob question, I think I know what i need, just no way of figuring it out.
  Reply With Quote
Old 29th March 2006, 02:54 PM   #2
diyAudio Member
 
trusound's Avatar
 
Join Date: Aug 2005
Location: Missouri
Send a message via AIM to trusound
my advice is to go active and save the headaches....passive networks in a car invironment..will always be inferior to the flexibility of an active xover/eq
  Reply With Quote
Old 29th March 2006, 03:12 PM   #3
diyAudio Member
 
N-Channel's Avatar
 
Join Date: Mar 2003
Location: Sol System
Send a message via AIM to N-Channel
AMEN to that!
  Reply With Quote
Old 29th March 2006, 03:17 PM   #4
LEESTER is offline LEESTER  United States
diyAudio Member
 
Join Date: Mar 2006
Location: LONGWOOD
Agreed, however multiple amps have drawbacks as well. Due to limitations and simplicity, I desire to setup a three-way front stage running off the same amp, ( big enough amp to pull the duty @ 200 w ' channel @ 12.0v). I have some additional subwoofers in the trunk and variable rear channel, but to get a full range signal up front at the listening level iasca judges use, a mid bass woofer directly in the doors would be nice. since my original post and after reading the forum i'm considering adding an additional full range 3 1/2" speaker to the system and run a 4-way type passive cross-over, or maybe incorporate the original passive supplied with the component set. i guess my question is what info should i get from the manufacturer to make a decision to try this or not and maybe come up with some theoretical numbers to start, oh and where to start building such a critter.
thanx and excuse the long post
  Reply With Quote
Old 29th March 2006, 03:27 PM   #5
diyAudio Member
 
Join Date: Oct 2005
it really depends on what your going to be happy with,simply putting a 6 inch mid with a passive 12 db lp crossover will give yo more mid-bass -but you will be very limited in tuning and driver levels wich may end up sounding not soo good-if your going the 3 way route and expect better, either go active with full tuning capability ,or spend mucho cash on a decent 3 way set with passives included- at least they will be level matched better.
  Reply With Quote
Old 29th March 2006, 05:55 PM   #6
LEESTER is offline LEESTER  United States
diyAudio Member
 
Join Date: Mar 2006
Location: LONGWOOD
Is it possible to incorporate adjustable levels into a passive crossover? I really need to avoid adding another amp.

here's the equipment i'm dealing with:

speakers
mid bass

amp

thx
  Reply With Quote
Old 29th March 2006, 05:55 PM   #7
LEESTER is offline LEESTER  United States
diyAudio Member
 
Join Date: Mar 2006
Location: LONGWOOD
After some thought, this might be quite the project, honestly i would like to have the ability to do this, but i know my limitations, maybe later on i can try this. with that said, is there a prebuilt option available that has x-over points close enough to allow me to make a decision of a new 4-channel amp, or other ?
  Reply With Quote
Old 30th March 2006, 06:04 PM   #8
diyAudio Member
 
trusound's Avatar
 
Join Date: Aug 2005
Location: Missouri
Send a message via AIM to trusound
Driver position and placement"also in regards to the other drivers position and placement" , on and off axis, relections, all these issues contribute why just adding a driver and making a passive IMO is not a good idea...

just having to option to change xover points can make or break driver cohesion...stage height and depth etc.... and is why having the flexibliity in a car makes sence
  Reply With Quote
Old 30th March 2006, 06:14 PM   #9
LEESTER is offline LEESTER  United States
diyAudio Member
 
Join Date: Mar 2006
Location: LONGWOOD
i have considered now, another approach: to simply add a two-way crossover, high pass to go on to the existing passive crossover for my components, the low-pass going to the mid-bass-woofer. The current setup for the components are very well matched and scored very well for staging charachteristics. the addition of the subwoofer is to help out with midbass and bring low freq to the front, hopefully very subtle change. An L-pad may help as well. is there any prebuilt units that will x-over around 200 hz @ 4ohm ?
  Reply With Quote
Old 4th April 2006, 09:56 AM   #10
Minds is offline Minds  Indonesia
diyAudio Member
 
Join Date: Jan 2006
Location: Jakarta
my advice : go semi active

for midbasses you go active

for tweeter and midranges you go for passive

lots of car audio enthusiast in my country do that

for midbasses if i can reccomend go for peerless or i heard some visaton (www.visaton.de) but i forgot the type maybe the ceramic or the alumunium ones (black colored cones)
  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
Help on setting up system evilhomer Car Audio 1 15th January 2007 09:26 AM
bias setting ben goh Solid State 8 14th August 2006 04:26 PM
Gain Setting HU/Amp vadi Car Audio 2 19th July 2006 11:57 AM
Setting up EQ manually ackcheng Multi-Way 6 21st April 2004 11:15 PM
the best setting A'af Digital Source 0 19th January 2002 07:18 AM


New To Site? Need Help?

All times are GMT. The time now is 12:28 PM.


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