Termpro Audio Forum Post New Topic  Post A Reply
my profile | directory login | register | faq | forum home

  next oldest topic   next newest topic
» Termpro Audio Forum » Installer's Corner » Advanced Topics » Confusion: crossovers and power, impedance

 - UBBFriend: Email this page to someone!    
Author Topic: Confusion: crossovers and power, impedance
Exaran
New Member
Member # 15003

Icon 1 posted      Profile for Exaran   Email Exaran   Send New Private Message       Edit/Delete Post   Reply With Quote 
I'm trying to piece together a DIY component set that will work well with my amp (2 channel Xtant: 50W each @4ohms, 100W each @2ohms)

I read that if you pair a 4 ohm tweet with a 4 ohm mid in paralalle with a crossover, the total impedance to the amp will still be 4 ohms (not 2 like I would expect), because as you move into the blocked frequencies on a crossover the impedence rises towards infinity and effectivly removes the speaker from the circuit.

What I'm trying to figure out is how much power will make it to each speaker. I'm starting to think that with a 4ohm tweet and a 4ohm mid 50W will go to each speaker, with the amp seeing a load of 4ohms... Is this right?

Can somebody help me out? A yes or no answer will work, but if somebody wants to take the time to explain the how and whys, that would be awesome [Big Grin]

Posts: 45 | From: Richmond, VA | Registered: Apr 2004  |  IP: Logged | Report this post to a Moderator
jc2
Senior Member
Member # 61

Icon 1 posted      Profile for jc2   Email jc2   Send New Private Message       Edit/Delete Post   Reply With Quote 
You are correct about the impedance, and the reasoning behind it.

As for how much power each driver gets, wel lit depends on the frequencies being played. If you have a 100 watt sine wave at 100Hz, your mid will get 100 watts (minus some loss in the croosover). With music it would be split, but still depend on the frequencies, since there is more power in the lower frequencies, your mid will get more power than the tweets.

http://www.audiocontrol.com/techpapers/techpaper104.pdf

Posts: 2575 | From: GA | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
   

Quick Reply
Message:

HTML is not enabled.
UBB Code™ is enabled.

Instant Graemlins
   


Post New Topic  Post A Reply Close Topic   Feature Topic   Move Topic   Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:


(c) 1996-2007 WHE Inc, Carson City Nevada, USA

Powered by Infopop Corporation
UBB.classic™ 6.7.2