Re: Balance to Un-Balance Converter - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 15th March 2013, 02:35 AM   #1
SSDIY is offline SSDIY  Hong Kong
diyAudio Member
 
Join Date: Oct 2009
Location: Hong Kong
Default Re: Balance to Un-Balance Converter

Hi there,

Attached image is the balance to un-balance converter of my Alesis RA300 power amp.

I would like to know what is the difference of the performance wise if use this converter to convert balance signal to un-balance or just simple solder the pin 3 and pin 1 together inside the XLR cable.

Please advice. Thanks
Attached Images
File Type: jpg alesis_ra300[1]-page-001R.jpg (60.4 KB, 205 views)
  Reply With Quote
Old 15th March 2013, 06:14 AM   #2
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
If u have to use a long cable for interconnecting, then balanced is good as it cancels noise picked up by the cable, since it(noise) is common mode. If your connection is short, better use the Ji1. You will find no difference, but do not short 1 and 3 as you will get noise.

Gajanan Phadte
  Reply With Quote
Old 15th March 2013, 07:16 AM   #3
balerit is offline balerit  South Africa
diyAudio Member
 
balerit's Avatar
 
Join Date: Apr 2011
Location: South Africa
Connecting pin 1 to 3 is standard practice. Balanced lines are really only for low level signals like microphones.
  Reply With Quote
Old 15th March 2013, 08:40 AM   #4
SSDIY is offline SSDIY  Hong Kong
diyAudio Member
 
Join Date: Oct 2009
Location: Hong Kong
Quote:
Originally Posted by gmphadte View Post
If u have to use a long cable for interconnecting, then balanced is good as it cancels noise picked up by the cable, since it(noise) is common mode. If your connection is short, better use the Ji1. You will find no difference, but do not short 1 and 3 as you will get noise.

Gajanan Phadte
Hi Gajanan

Thank you for your reply.

I know the pros and cons of balanced connection. Personally I prefer to use balanced connection for my home stereo system because I always think XLR connectors and receptacles are better and stronger built than RCAs and a well made RCA connectors and sockets such as WBT cost a lot of money than a well made XLR connectors and receptacles such as Neutrik.

Recently, I am trying to change my system from RCA to XLR connection. The reason why I ask about the difference between the converter and solder pin 1and pin 3 togeter is because when I connect the signal source to the input of the XLR converter, the sound came out from the speakers are seriously distorted, loudly, foggy and lacking dynamics. However if I solder the pin 1 and pin 3 together and connect the XLR cable direct to the input of the power amp. The sound becomes normal.

Therefore, in this case, I would like to know what is the advantage to design and use a balanced to un-balanced converter if simple soldering pin 1 and pin 3 of a XLR cable together can do a better job.
  Reply With Quote
Old 15th March 2013, 08:43 AM   #5
SSDIY is offline SSDIY  Hong Kong
diyAudio Member
 
Join Date: Oct 2009
Location: Hong Kong
Quote:
Originally Posted by balerit View Post
Connecting pin 1 to 3 is standard practice. Balanced lines are really only for low level signals like microphones.
Hi balerit

I use the XLR cables to connect my CD player and power amps for my home stereo system. The outcome is positive and I feel happy with the connection.
  Reply With Quote
Old 15th March 2013, 11:43 AM   #6
balerit is offline balerit  South Africa
diyAudio Member
 
balerit's Avatar
 
Join Date: Apr 2011
Location: South Africa
Quote:
Originally Posted by SSDIY View Post
Hi balerit

I use the XLR cables to connect my CD player and power amps for my home stereo system. The outcome is positive and I feel happy with the connection.
Great
  Reply With Quote
Old 15th March 2013, 12:07 PM   #7
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Connect Pin1 to chassis.
Do not connect Pin3 to Chassis.
When using the XLR to connect an unbalanced signal connect Pin3 to Signal Ground NOT to chassis.
__________________
regards Andrew T.
  Reply With Quote
Old 16th March 2013, 01:25 AM   #8
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
Maybe I should repeat what Andrew just wrote.

XLR Pin1 is a shield and is only connected to the chassis with a very short wire.
XLR Pin1 is not circuit ground.
__________________
Kevin
  Reply With Quote
Old 19th March 2013, 04:25 AM   #9
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
It should show no difference. Something is not correct.

Gajanan Phadte
Quote:
Originally Posted by SSDIY View Post
Hi Gajanan

Thank you for your reply.

... dynamics. However if I solder the pin 1 and pin 3 together and connect the XLR cable direct to the input of the power amp. The sound becomes normal.

Therefore, in this case, I would like to know what is the advantage to design and use a balanced to un-balanced converter if simple soldering pin 1 and pin 3 of a XLR cable together can do a better job.
  Reply With Quote
Old 19th March 2013, 07:56 AM   #10
SSDIY is offline SSDIY  Hong Kong
diyAudio Member
 
Join Date: Oct 2009
Location: Hong Kong
Quote:
Originally Posted by AndrewT View Post
Connect Pin1 to chassis.
Do not connect Pin3 to Chassis.
When using the XLR to connect an unbalanced signal connect Pin3 to Signal Ground NOT to chassis.
Hi Andrew

Thank you for advice. Will do accordingly.
  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
balance Professor smith Multi-Way 15 16th February 2012 06:04 PM
Cyrus 2 No balance 02dag Solid State 1 11th December 2011 03:51 PM
What is true balance? Aaron323 Solid State 8 5th January 2006 07:38 AM
very low noise balance to unbalance converter YUTK Solid State 10 12th November 2005 05:00 PM
Readjusting balance Jasmeleg Solid State 3 12th September 2005 10:39 AM


New To Site? Need Help?

All times are GMT. The time now is 12:19 AM.


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