rega arm rewire - Page 10 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

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 1st August 2013, 04:46 PM   #91
GKF is offline GKF  Canada
diyAudio Member
 
GKF's Avatar
 
Join Date: Oct 2011
Location: miramichi NB
Quote:
Originally Posted by soundchaser001 View Post
Hi GKF;

Is that an exploded parts list/diagram of an RB300 I see in the background? Can I get a copy if it is? I am a vinylengine site member and have not seen it there.

Nice work and thanks

Matt
hey matt
yes i downloaded it from a uk based site but can't remember the name.
i'll have a look for the sheet and let you know.
thanks
gordie
  Reply With Quote
Old 1st August 2013, 05:38 PM   #92
diyAudio Member
 
Join Date: Dec 2005
Location: Germany
Default Hope this helps

I think it was this website:
http://www.audiomods.co.uk/images/re...destructed.jpg


Greez

SigFire
__________________
S.K.
  Reply With Quote
Old 1st August 2013, 05:58 PM   #93
diyAudio Member
 
soundchaser001's Avatar
 
Join Date: Oct 2007
Location: Kanata
Smile Thanks!

Thanks a lot guys!
  Reply With Quote
Old 1st August 2013, 06:02 PM   #94
GKF is offline GKF  Canada
diyAudio Member
 
GKF's Avatar
 
Join Date: Oct 2011
Location: miramichi NB
yes thats the one , thank you sigfire for posting this link.
saves me some work and helps matt .
good stuff.

ps sorry i haven't posted any updates in my arm rewire but i've been loving the mods so much that every night i spend 3 to 5 hours listening .
this path i took was the best improvement and shock as how good it turned out.
worth every hour of work and every dollar it cost.
i love the rewire upgrade.
  Reply With Quote
Old 2nd August 2013, 03:39 PM   #95
diyAudio Member
 
ticktock's Avatar
 
Join Date: Dec 2006
Quote:
Originally Posted by MrPig View Post
Yes, Heybrook were an English company who made a lot of well respected and loved equipment.
Wasn't Heybrook based in Glasgow/Scotland (like Linn too)?
__________________
thanks
Blaue Leuchtdioden machen blöd. (hb)
sent from NSA monitored device
  Reply With Quote
Old 9th October 2016, 09:20 AM   #96
diyAudio Member
 
Join Date: Mar 2012
Location: Melbourne
Hi Guys, don't if anyone is still following this thread after 3 years ... but i have a question about Rega tone arm and balanced operation.

I've just finished building my new balanced phone stage (design by Forum member polyphase). My main turntable (customised Lenco with MG-1 air bearing arm) is being serviced right now so i got my old old table out of mothballs - an AR turntable with Rega RB300arm. The new phono amp has 3.5mm TRS jacks, so i desoldered the RCA plugs from the old table and replaced them with 3.5mm TRS plugs.

Plug in right channel - and I hear music. Plug in left channel - the right channel goes to pot, as if its being severely overloaded. Nothing coming out of left channel. I've tried to trouble shoot with my good fiend Google, I have found a thread on Auidogon talking about the need to re-wire Rega arms before you can use the in balanced mode. So - I am hoping that the issues I am hearing are due to arm wiring, not because I have screwed up my phono amp.

Right now, I am playing The Angry Young Them - mono press. I can plug the right channel (red/green wires) from the turntable into either input of the pre-amp and get music, so both channels of the pre-amp work OK. As soon as I plug in left channel (white/blue wires) from the turntable then it goes to crap. So seems like the pre-amp is working. So is it correct - I need to modify the rega for balanced operation? Other options are:
1. Play mono records and listen to one speaker
2. Wait for the Lenco to come back.

Any thought? Thanks guys.
  Reply With Quote
Old 9th October 2016, 10:07 AM   #97
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Is there a connection between the cartridge channels?
Is the sleeve of the TRS cable connector only connected to screen/shield and chassis?

Does connecting Blu/Wht alone give any sound in any channel?
__________________
regards Andrew T.
Sent from my desktop computer using a keyboard
  Reply With Quote
Old 9th October 2016, 11:02 AM   #98
diyAudio Member
 
Join Date: Mar 2012
Location: Melbourne
Quote:
Originally Posted by AndrewT View Post
Is there a connection between the cartridge channels?
Is the sleeve of the TRS cable connector only connected to screen/shield and chassis?

Does connecting Blu/Wht alone give any sound in any channel?
Hi Andrew thanks for getting back to me, all good questions that I should have checked for myself.
1. Ive just checked for connection between channels with my DVM. Does not appear to be any connection.
2. The sleeve is not connected to anything. Cartridge cables go to tip and ring, and from the jack the signal goes to +ve and -ve inputs but the sleeve tag on the input jack is not connected to anything.
3. Good question. I have to go to work tomorrow so I have shut down for the night (hey its 10pm here). I will check this again tomorrow.

Thanks again Andrew. I listened to Sgt Pepper mono tonight, if I dont get this sorted I guess that I can listen to the rest of my Beatles mono box while I wait for my Lenco!

Regards,
Hazard

Sent from my SM-G900I using Tapatalk
  Reply With Quote
Old 9th October 2016, 07:44 PM   #99
diyAudio Member
 
Hamish119's Avatar
 
Join Date: Sep 2014
Location: London, UK
Quote:
Originally Posted by hazard500 View Post
...So is it correct - I need to modify the rega for balanced operation?
You most definitely need to modify the 'standard' REGA for balanced operation - see this from here.

WARNING: The following link shows a disturbing image of manufacturer mis-wiring of a tone-arm.
The deliberate connection between the BLUE & BLACK leads is horrific!
The BLACK lead should be extended to the headshell (the missing' 5th wire).

However, the horror doesn't end with the tone-arm wiring.
Many cartridge manufacturers are also guilty of using a SIGNAL pin (usually a - pin) to connect the cartridge body casing to an imaginary ground instead of using the 'missing' 5th wire in the tone-arm.

The 'smarter' manufacturers make it easy to identify and correct their wiring error.

Example - see the source of imbalance on the GREEN signal pin, which should be disconnected from the GREEN pin and connected to the 'missing' 5th wire in the tone-arm.

Good Luck!

EDIT: Every tone-arm should present a minimum of 5 x wires at the headshell (4 x SIGNAL leads + GROUND lead).
__________________
Differential input phono amplifiers - the correct way of amplifying the output from a phono cartridge!

Last edited by Hamish119; 9th October 2016 at 07:57 PM.
  Reply With Quote
Old 9th October 2016, 09:28 PM   #100
diyAudio Member
 
Join Date: Mar 2012
Location: Melbourne
Quote:
Originally Posted by Hamish119 View Post
You most definitely need to modify the 'standard' REGA for balanced operation - see this from here.

WARNING: The following link shows a disturbing image of manufacturer mis-wiring of a tone-arm.
The deliberate connection between the BLUE & BLACK leads is horrific!
The BLACK lead should be extended to the headshell (the missing' 5th wire).

However, the horror doesn't end with the tone-arm wiring.
Many cartridge manufacturers are also guilty of using a SIGNAL pin (usually a - pin) to connect the cartridge body casing to an imaginary ground instead of using the 'missing' 5th wire in the tone-arm.

The 'smarter' manufacturers make it easy to identify and correct their wiring error.

Example - see the source of imbalance on the GREEN signal pin, which should be disconnected from the GREEN pin and connected to the 'missing' 5th wire in the tone-arm.

Good Luck!

EDIT: Every tone-arm should present a minimum of 5 x wires at the headshell (4 x SIGNAL leads + GROUND lead).
That's great, thanks Hamish. So its clear from this why the right channel works, but not the left channel.

Looks like I got some work to do on my tonearm. Question, if I disconnect the ground from the left channel and don't reconnect the black wire 9just because I'm lazy) what happens?

Regards,
Hazard
  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
WTB: Rega RB250 or RB300 in need of rewire beeah Swap Meet 0 15th December 2011 03:11 PM
Rega R200 rewire AdrianStone Analogue Source 0 6th October 2008 09:45 PM
rewire Rega RB250 dafdesign Analogue Source 3 7th August 2007 04:13 AM
rewire Rega P3 dafdesign Analogue Source 3 19th July 2007 01:55 PM


New To Site? Need Help?

All times are GMT. The time now is 05:50 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki