Balanced line

jleaman · 15th October 2002, 07:00 PM

Well i was wondering if there is a circuit out there that i can build or use for my problem here..

i have a aleph p1.7 preamp that has rca jacks or balanced i also have a aleph 5 balanced amp that im building and want to take advantage of the balanced fetures. now my cd player is rca is there a circuit that will convert rca to balanced ( xlr ).. i have a schematic from my dad that uses a cap to make balanced to rca but i dont know if that is backwards compatable. is it .. ?

Bob2 · 15th October 2002, 07:08 PM

Jason

look at ESP project 51

Bob2

jleaman · 15th October 2002, 07:21 PM

id love to but i have not installed all my user files onto my new apple i book what is teh esp webpage address.. ?

skaara · 15th October 2002, 07:27 PM

Doesnt aleph p accept rca inputs too and provide balanced output?!

Bob2 · 15th October 2002, 07:33 PM

Jason

Sorry I don't know how to link this

http://sound.westhost.com/project51.htm
http://sound.westhost.com/project87.htm

Bob2

Steve Eddy · 15th October 2002, 08:18 PM

Quote:

Originally posted by JasonL
Well i was wondering if there is a circuit out there that i can build or use for my problem here..

i have a aleph p1.7 preamp that has rca jacks or balanced i also have a aleph 5 balanced amp that im building and want to take advantage of the balanced fetures. now my cd player is rca is there a circuit that will convert rca to balanced ( xlr ).. i have a schematic from my dad that uses a cap to make balanced to rca but i dont know if that is backwards compatable. is it .. ?

Something you might want to consider is the <a href="http://www.jensentransformers.com">Jensen</a> DM2-2RX IsoMax unit. At $200 it's not exactly cheap, but one of the best ways I've found to convert from balanced to unbalanced and vice versa is with a transformer.

You can also buy the raw transformers (either the JT-11-DMCF or the JT-11-DMPC depending whether you want flying leads or PC mount) and do it yourself. The transformers are about $80 each so you don't save a whole lot but it gives you more freedom with the design.

se

Nelson Pass · 15th October 2002, 10:58 PM

The Aleph P is perfectly happy to do this conversion
for you without loss of performance.

Steve Eddy · 15th October 2002, 11:43 PM

Quote:

Originally posted by Nelson Pass
The Aleph P is perfectly happy to do this conversion
for you without loss of performance.

How will his Aleph P convert the unbalanced output of his CD player into a balanced output?

The way I read his post, he has a CD player with unbalanced outputs and he wants to convert those to balanced so he can feed the Aleph P's balanced inputs.

se

Peter Daniel · 16th October 2002, 12:02 AM

If your CD player doesn't have a true balance output, I think that additional circuit can only degrade the sound and benefit of going from CDP to preamp balanced would be diminished.

So you can either use quality transformer for conversion (if you really want to go full balanced from CDP to Pre) or use Aleph P to do it for you

. I would say this is the main advantage of using preamp in that place, because in addition controlling the volume it does the conversion. Unless you want to build Aleph P inside your CD player and somehow place volume knob on a front panel.

GRollins · 16th October 2002, 12:12 AM

The Aleph P is essentially a differential circuit, albeit with two curent sources and a bit of resistance between the sources. Differentials make fine phase splitters as long as there is enough resistance under the cathode/source/emitter.

Grey

15th October 2002, 07:00 PM	#1
jleaman Banned Join Date: Apr 2002	Balanced line Well i was wondering if there is a circuit out there that i can build or use for my problem here.. i have a aleph p1.7 preamp that has rca jacks or balanced i also have a aleph 5 balanced amp that im building and want to take advantage of the balanced fetures. now my cd player is rca is there a circuit that will convert rca to balanced ( xlr ).. i have a schematic from my dad that uses a cap to make balanced to rca but i dont know if that is backwards compatable. is it .. ?

16th October 2002, 12:02 AM	#9
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	If your CD player doesn't have a true balance output, I think that additional circuit can only degrade the sound and benefit of going from CDP to preamp balanced would be diminished. So you can either use quality transformer for conversion (if you really want to go full balanced from CDP to Pre) or use Aleph P to do it for you. I would say this is the main advantage of using preamp in that place, because in addition controlling the volume it does the conversion. Unless you want to build Aleph P inside your CD player and somehow place volume knob on a front panel. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Balanced zen line stage	hcbonfim	Pass Labs	17	4th June 2007 09:17 PM
Balanced Line to Mic Pad DIY??	Zero Cool	Instruments and Amps	2	23rd February 2006 04:38 PM
Balanced Zen v5 + balanced Zen line stage	Adrie	Pass Labs	0	30th May 2004 05:27 PM
Zen Balanced Line Stage Balanced vs Unbalanced	macka	Pass Labs	28	11th December 2002 06:18 AM
Balanced line stage	lykkedk	Pass Labs	1	5th December 2002 07:36 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

15th October 2002, 07:08 PM	#2
Bob2 diyAudio Member Join Date: Feb 2002 Location: Winnipeg, Canada	Jason look at ESP project 51 Bob2

15th October 2002, 07:21 PM	#3
jleaman Banned Join Date: Apr 2002	id love to but i have not installed all my user files onto my new apple i book what is teh esp webpage address.. ?

15th October 2002, 07:27 PM	#4
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	Doesnt aleph p accept rca inputs too and provide balanced output?!

15th October 2002, 07:33 PM	#5
Bob2 diyAudio Member Join Date: Feb 2002 Location: Winnipeg, Canada	Jason Sorry I don't know how to link this http://sound.westhost.com/project51.htm http://sound.westhost.com/project87.htm Bob2

15th October 2002, 10:58 PM	#7
Nelson Pass The one and only Join Date: Mar 2001	The Aleph P is perfectly happy to do this conversion for you without loss of performance.

16th October 2002, 12:12 AM	#10
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	The Aleph P is essentially a differential circuit, albeit with two curent sources and a bit of resistance between the sources. Differentials make fine phase splitters as long as there is enough resistance under the cathode/source/emitter. Grey

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)