The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: James Meyer
Subject: Re: Combine stereo outputs for twice voltage?
X-Newsreader: Forte Agent 1.92/32.572
Date: Thu, 26 Dec 2002 02:20:10 GMT
NNTP-Posting-Date: Wed, 25 Dec 2002 21:20:10 EST
On Thu, 26 Dec 2002 10:26:16 +1100, "Phil Allison" wroth:
>> The original question was for "identical signals" from both channels.
>> That means that antiphase signals can't be used.
> ** That is taking the OP *very* literally.
I've learned to do that. Baring any evidence to the contrary, it's best
to take someone at his word.
> Peter also stated that he was
>> familiar with bridge circuits so he was probably looking for a different
> ** But never said why or the application. Like most PITAs.
Maybe the application is a secret. Maybe it's too silly for words. The
application doesn't matter as long as you meet the design criteria put forth in
the original RFH (request for help).
>> If the amplifier in questiion has transformer coupled outputs
> ** Huh ? A vlave amp ?
Vlaves aren't the only type of output devices that have been used with
>and if the
>> chassis ground that is usually made at one end of the output winding can
>> disconnected without changing the negative feedback,
> ** With no feedback?
Some feedback circuits use the voltage generated across the speaker
winding. Some use the voltage at the primary side. If the feedback is from the
primary, then you can have both sides of the speaker winding unconnected to
ground. Obviously, if the feedback is from the speaker winding and you
disconnect one side from ground, then you've seriously screwed up the feedback.
>then it's a simple matter
>> to connect the windings in series-aiding for twice the voltage and each
>> will have identical signals.
> ** Damn sight easier to invert one channel's input and use bridge mode.
Nobody said it wasn't easier to do it that way. But if you do, then you
aren't playing the game by the rules.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup