Panny SA-XR50 ?

altec416 · « **on:** 13 Jul 2004, 02:27 pm »

Does the Panny SA-XR50 accept upsampled 192HZ signals through the digital input and the analog inputs?

AphileEarlyAdopter · « **Reply #1 on:** 13 Jul 2004, 02:59 pm »

Yes, It accepts 192Khz/24bit from the digital inputs and samples analog inputs at the same rate. You could also biamp in stereo mode, easily with A-B speaker terminals.

AphileEarlyAdopter · « **Reply #2 on:** 13 Jul 2004, 03:00 pm »

Yes, It accepts 192Khz/24bit from the digital inputs and samples analog inputs at the same rate. You could also biamp in stereo mode, easily with A-B speaker terminals.

Wayne1 · « **Reply #3 on:** 13 Jul 2004, 05:36 pm »

A & B speaker terminals are connected to the same amplifiers.

This would not be BI-AMPING. This would be a easy hook-up for BI-WIRE.

In order to BI-AMP the speakers need to be hooked up to the front channels, either A or B speakers, AND the surround speaker outputs. The unit then needs to be put in "Party Mode" so the same information is fed to the main and surround channels.

AphileEarlyAdopter · « **Reply #4 on:** 13 Jul 2004, 08:48 pm »

Wayne,
Are you saying this based on your inspection of the internals ? If so, this is a disappointment for me. There does seem to be a slight change in the sound. Hopefully the XR70 will correct this.

The manual says, the surround and center channel terminals do not have any output when both A and B are engaged. I assumed the surround amplifiers would be used for the B terminals.

Wayne1 · « **Reply #5 on:** 13 Jul 2004, 11:06 pm »

This is after inspection of internals and schematic.

A & B speakers are just that. Two pair of speakers run off the same amp. Just like any other receiver or amp. I do not expect the XR-70 to be any different.

The only difference you might be hearing is because of the Bi-wire.

If you want to Bi-AMP you need two amps per speaker. Remember the Panasonic receivers are designed for HT use. Not "audiophile" use.

The B set of speaker terminals is simply so another set of speakers can be used in a remote location.

AphileEarlyAdopter · « **Reply #6 on:** 14 Jul 2004, 02:11 am »

Wayne,
So I guess, the convert the 5.1 channel sound to stereo when both A and B are switched on and let the same amp drive both terminals. Is there a some sort of network to drive the resistances of two speakers in parallel ? The Panasonic specs 6-8ohm speaker impedences. It is going to halve when in parallel.

BTW, the XR70 seems to document the biamp capability specifically as 'Multi-Channel Multi-drive' unlike the XR50 which does not mention how the B speaker terminals work.

Quote from: Wayne1

This is after inspection of internals and schematic.

A & B speakers are just that. Two pair of speakers run off the same amp. Just like any other receiver or amp. I do not expect the XR-70 to be any different.

The only difference you might be hearing is because of the Bi-wire.

If you want to Bi-AMP you need two amps per speaker. Remember the Panasonic receivers are designed for HT use. Not "audiophile" use.

The B set of speaker terminals is simply so another set of speakers can be used in a remote location.

altec416 · « **Reply #7 on:** 14 Jul 2004, 08:49 pm »

Thanks for the help. This is my second atempt trying a Panny. The first one I tried was the SA-XR10. Didn't sound to good IMO. I'm still shaking my head in disbelief that the SA-XR50 right out of the box shows this well. Nice bass, pretty smooth and very detailed. Not much depth though.

My first session went about 4hrs. and no listener fatigue what so ever. I think this a real key. All of the SS gear that I have had in the past accept for the class A designs wore on me. I've mainly been a tube guy for the past fifteen years and so far I think I can leave with this digital amp. Right now without full breakin or upgraded PC it real blows away any of the vintage Fisher, Dynaco and Scott integrated amps that I've owned of heard in the past. Mixing and matching amps and preamps, tube and ss was fun for awhile but it kinda fried me out. I have to agree with the digital amp technolgy supporters, looks to be a very positive future ahead in digital sound.

Wayne1 · « **Reply #8 on:** 14 Jul 2004, 08:54 pm »

Quote from: AphileEarlyAdopter

Wayne,
Is there a some sort of network to drive the resistances of two speakers in parallel ? The Panasonic specs 6-8ohm speaker impedences. It is going to halve when in parallel.

I believe that is why Panasonic changed the driver section of th front channels on the XR-50.

AphileEarlyAdopter · « **Reply #9 on:** 14 Jul 2004, 09:23 pm »

Quote from: Wayne1

Quote from: AphileEarlyAdopter
Wayne,
Is there a some sort of network to drive the resistances of two speakers in parallel ? The Panasonic specs 6-8ohm speaker impedences. It is going to halve when in parallel.

I believe that is why Panasonic changed the driver section of th front channels on the XR-50.

Wayne,
Thanks for the reply. Maybe this A-B setting can be used as a 4-ohm speaker connection (?).

altec,
What sort of speakers are you using ? I have highly efficient speakers (Silverline Sonatina) which are usually used with SET amps. The XR50 sounds great with this speakers. I have seen posts where people have reported that the Panny was having trouble driving their speakers, probably ones whose impedences drop too low.

Yes, the future is digital and just like computers we are going to see falling prices and more features. The quality of sound should also improve.