connecting sub with frontspeakers ? - 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 16th February 2006, 12:28 PM   #1
ROVSING is offline ROVSING  Denmark
diyAudio Member
 
ROVSING's Avatar
 
Join Date: Sep 2004
Location: Fyn Odense
Default connecting sub with frontspeakers ?

I'm rather new in carhifi i got 2 pairs of loudspeakers in my car but no special sub connection is it possible to combine the frontspeakers with a sub ?
Would it be easy to make a crossover wich takes care of that ?
I assume that the sub should be connected to both outputs but how ?
My plan is to build chipamps into the car based on either LM 3886, LM 3875 or OPA 549, i have allready started building my SMPS fore this based on SG3525, but till i reach that point i would like to get my sub installed temporarily- if possible.
Eventually schematic would be very helpfull.
Suggestions fore 2+2+sub amplifiers and wich chip to prefere would be helpfull too, thanks.
__________________
Frandsen
  Reply With Quote
Old 16th February 2006, 12:59 PM   #2
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
In the absence of line level pre-outs you need to tap off the speaker connections and use these to drive your amp. In front of the amp you should add a L+R summing circuit and an active filter, 2nd-order Butterworth adjustable 60-120Hz should do the job.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 16th February 2006, 01:55 PM   #3
ROVSING is offline ROVSING  Denmark
diyAudio Member
 
ROVSING's Avatar
 
Join Date: Sep 2004
Location: Fyn Odense
there is line level preouts and i've found an adjustable Sallen-key butterworth filter 45-225 hz somewhere else in this forum, but could you please explain what L+R summing circuit is ?
eventually guide me to a link that explains it ?
Can i use preouts and loudspeakerconnections at the same time ?
thank you for helping me so far.
__________________
Frandsen
  Reply With Quote
Old 16th February 2006, 02:18 PM   #4
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
It mixed the left and right channels to produce a mono output. Google for 'virtual earth summing op-amp' or look at http://sound.au.com
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 17th February 2006, 10:27 AM   #5
ROVSING is offline ROVSING  Denmark
diyAudio Member
 
ROVSING's Avatar
 
Join Date: Sep 2004
Location: Fyn Odense
Thank you for the help, i found a good link explaining most of the things that i can use fore this project.[URL=http://--http://www.eng.yale.edu-ee-labs/morse/compo/sloa058.pdf[/URL]
27 seven pages explaining a lot about op amps.
Now i got something to study this weekend.
__________________
Frandsen
  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
need help connecting pro amp to pc joka22 Solid State 23 6th July 2007 01:43 AM
connecting a pot jarthel Parts 8 3rd September 2006 10:54 PM
Need help with connecting OPT. juoto Tubes / Valves 1 17th January 2006 07:51 PM


New To Site? Need Help?

All times are GMT. The time now is 09:00 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