Modding a XR45: adding USB port.

antorsae · 10th February 2004, 12:40 PM

Hi,

I plan to mod my panasonic XR45 digital receiver. My main goal is to get rid of jitter.

I want to add a USB port to the panasonic by just putting a M-Audio Sonica USB (http://www.short-media.com/article.php?115) inside and wiring the SPDIF line out of the Sonica to the AKM 4114 spdif receiver in the panny. I would bypass optical/coax.

Do you believe this would reduce jitter? (as there would be no optical/coax cables involved)

Regards,

Andres

tubesguy · 18th October 2004, 03:20 PM

bump

Any success witht this project yet? I've got a couple of XR10s, and I'm really intrigued by all of the PC-audio activity lately. TIA - Pat

antorsae · 18th October 2004, 03:25 PM

Hi,

At the end the Sonica is not very reliable under heavy CPU load. The USB interface in the PC gets hit and the audio gets choppy, so I left with the impression that USB 1.1 is not enough for sound.

I have one space SA-XR25 (in addition to the XR45) and I already got all the parts to make: High Resolution Multi-Channel Digital Interface

Now I just need time!

-Andres

raxy · 30th October 2004, 12:36 PM

jitter takes places on the spdif portion of the path,
you'd better try to output the classical LRCK,SDATA,CLOCK signals before the spdif line driver of the sonica.
Connecting the out clock of the sonica to the pany's will eliminate jitter by construction.

tubesguy · 1st February 2006, 04:21 PM

I'm still thinking about this. I'm using a Squeezebox via coax to the XR10 now, but I'd like to add a USB-in to the receiver and go directly from the computer to the receiver.

So, is it as simple as just adding a USB-I2S board, such as the dddac, and wiring the I2S outputs to the Equibit board, as outlined in this post:

http://www.diyaudio.com/forums/showt...ht=#post241476

or is more required, such as additional logic or other conversion steps?

I'm a newbie with regard to this stuff, but I'd appreciate any advice that anyone could offer.

Thanks - Pat

10th February 2004, 12:40 PM	#1
antorsae diyAudio Member Join Date: Feb 2004 Location: Spain	Modding a XR45: adding USB port. Hi, I plan to mod my panasonic XR45 digital receiver. My main goal is to get rid of jitter. I want to add a USB port to the panasonic by just putting a M-Audio Sonica USB (http://www.short-media.com/article.php?115) inside and wiring the SPDIF line out of the Sonica to the AKM 4114 spdif receiver in the panny. I would bypass optical/coax. Do you believe this would reduce jitter? (as there would be no optical/coax cables involved) Regards, Andres

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
Help with Pan XR45 / DCX2496 configuration	ultrachrome	Class D	3	26th November 2005 08:52 AM
Adding Vol Port to this LM3886 Circuit!	FREQUENCY	Chip Amps	12	12th March 2005 09:08 AM
Panasonic SA-XR10 vs SA-XR45/70	Snoodge	Class D	1	16th December 2004 07:17 AM
Adding a Port to my enclosure	Maples	Multi-Way	6	26th July 2004 06:29 AM
Adding a port	Howard	Multi-Way	35	15th August 2003 09:06 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

18th October 2004, 03:20 PM	#2
tubesguy diyAudio Member Join Date: May 2002 Location: Madison, WI	bump Any success witht this project yet? I've got a couple of XR10s, and I'm really intrigued by all of the PC-audio activity lately. TIA - Pat

18th October 2004, 03:25 PM	#3
antorsae diyAudio Member Join Date: Feb 2004 Location: Spain	Hi, At the end the Sonica is not very reliable under heavy CPU load. The USB interface in the PC gets hit and the audio gets choppy, so I left with the impression that USB 1.1 is not enough for sound. I have one space SA-XR25 (in addition to the XR45) and I already got all the parts to make: High Resolution Multi-Channel Digital Interface Now I just need time! -Andres

30th October 2004, 12:36 PM	#4
raxy diyAudio Member Join Date: Oct 2004	jitter takes places on the spdif portion of the path, you'd better try to output the classical LRCK,SDATA,CLOCK signals before the spdif line driver of the sonica. Connecting the out clock of the sonica to the pany's will eliminate jitter by construction.

1st February 2006, 04:21 PM	#5
tubesguy diyAudio Member Join Date: May 2002 Location: Madison, WI	I'm still thinking about this. I'm using a Squeezebox via coax to the XR10 now, but I'd like to add a USB-in to the receiver and go directly from the computer to the receiver. So, is it as simple as just adding a USB-I2S board, such as the dddac, and wiring the I2S outputs to the Equibit board, as outlined in this post: http://www.diyaudio.com/forums/showt...ht=#post241476 or is more required, such as additional logic or other conversion steps? I'm a newbie with regard to this stuff, but I'd appreciate any advice that anyone could offer. Thanks - Pat

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