Speaker level to line level converters - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 7th December 2007, 12:08 AM   #1
qguy is offline qguy  Canada
diyAudio Member
 
Join Date: Mar 2005
Location: Burnaby
Send a message via AIM to qguy Send a message via MSN to qguy Send a message via Yahoo to qguy
Default Speaker level to line level converters

How does the plate amp for subwoofers convert the speaker level to a line level ?
__________________
na
  Reply With Quote
Old 7th December 2007, 04:49 AM   #2
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
A couple large value resistors - 47k in the example i found.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 9th December 2007, 03:58 PM   #3
diyAudio Member
 
Join Date: Sep 2007
Send a message via MSN to Kevin_Murray
Further to what Dave said, when a design sums the left and right inputs, the attenuated L&R signals are often fed through opamps in a differential scheme before summing. This is not for signal quality but rather to prevent problems when connecting amplifiers which have BTL outputs (Bridge-Tied-Load or "bridged"). The L&R "-" speaker outputs on these amps are not a common electrical point, to short them together would severely damage the amplifier. While very uncommon, amplifiers (receivers) with this output configuration do exist. Mostly inexpensive models.

Kevin
  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
Convert Line Level to Electric Guitar Level miallen Solid State 4 16th May 2010 01:22 PM
speaker level input vs line level question crippledchicken Subwoofers 4 17th July 2007 03:36 AM
lesser of two evils, high level -> line level, digital volume control mazurek Solid State 3 19th November 2006 12:25 AM
Speaker Level Converters Mikett Car Audio 1 27th September 2004 05:21 AM
how to bring down line level signal to preamplifier level deji Solid State 15 15th April 2004 04:13 PM


New To Site? Need Help?

All times are GMT. The time now is 05:13 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