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Panny PB50 (or PG50) Connection to External Amp Query.

Discussion in 'Televisions' started by Monster, Aug 18, 2001.

  1. Monster

    Monster
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    Although this set has its own DD, DTS sourround speakers etc I would like to connect it to my Sony 940 amp. I think the connections on the rear are the same as the PG50.

    The manual states this is done by connecting the front left and right audio outs to the TV inputs on the amp but the diagram shows the front left and centre!

    I've connected FL & FR and it seems to be ok delivering DPL from suitable nicam sources and I've turned off the internal speakers via the surround sound menu BUT........

    I have to turn the volume on the TV up high so the sound via the amp is comparable to the other sources. Also if you alter the bass/treble settings on the TV it affects the sound from the amp. (all this with the internal speakers set to off) Have I done this right???

    On my previous TV (32PK1) the L&R audio outs connected to the amp and the volume/bass/treble had no effect on the audio out signal. The sound from the PB50 seems to suffer. In fact it sounds better through the Panny VCR audio outs. (Same interconnects)

    Am I missing something or it this TV not really suitable for connecting to an external amp?

    <img src="confused.gif" border="0"> <img src="confused.gif" border="0"> <img src="confused.gif" border="0">
     
  2. Colger

    Colger
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    John<br />Your connections are correct, but you are right in that the connections shown in the manual show centre instead of FR. I have a PG50 and that is how it is shown in the manual (misprint, obviously).<br />I also have to turn the volume of the TV fairly high in order to get a reasonable level of sound through a Yamaha A1000 prologic Amp.<br />I complained to Panasonic just after purchasing the PG50 but they say the set is performing normal.<br />Having said that, they do admit that there are problems with the picture in NTSC mode, a moire' patterning being evident and also slight vertical shadowing down both sides of the screen. This is currently being investigate by Panasonic and many of us are still awaiting the outcome.<br />FYI this is my 6th widescreen set in 12 months.<br />All started in last year with 3 panasonics (different models), 2 sonys and now back to panasonic with a PG50. All of them had problems ranging from purity,convergence or some other picture defect. You will gather I am not particularly happy!!!!!<br />Feel free to contact me by email if you wish
     
  3. Guest

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    Surely "Line Out" should be just that? At a predetermined level, regardless of the volume level. I could understand it if it was via the headphone socket or such like, it doesn't sound "normal" to me.
     
  4. Monster

    Monster
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    Thanks GerrC.

    Colin, that's what I thought but it seems not!! Its a pain having to faff about <img src="mad.gif" border="0"> <img src="mad.gif" border="0"> <img src="mad.gif" border="0">
     
  5. Guest

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    I cooected a PF10 to an external amp, Line Out was exactly what it said it was. I've never heard of any other Panasonic TV that do this other than the PGs and PBs, perhaps this is another problem with these TVs? (I suspect that this function is software driven too) Have you tried pushing Panasonic for an answer with reference to this not being the case on their other models and equipment?
     
  6. Guest

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    Not quite sure if I understand their thinking there...........<br />Are they assuming that a purchaser of these models will never want to upgrade to an external amp? If so, isn't that rather reducing the number of potential purchaser? ie Someone who is looking for a damn good picture............ But with the list of problems these models seem to have it seems that Panasonic may have lost the plot there too!
     
  7. Colger

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    ColinH<br />I must admit, I hadnt connected my previous Panasonic TV's (PF10 and PK20) to an external amp but I believe the reason for the difference with the PG/PB range is that they suggest you can connect front L and R audio to external amplifier and speaker thereby improving the sound compared to the internal speakers. In that case, then I can understand why the outputs are controlled by the TV volume control so that all 5 speakers are controlled.<br />I haven't pushed Panasonic on this one as eventually I shall go for a separate DTS Amp. I am more concerned with the NTSC picture problems at the moment, moire' and dark vertical bands L & R.<br />There is also another difference with the newer ranges and that is that the P-NR function always reverts to its off state when the set is switched off. On previous sets the TV retains the setting. Panasonics answer to this, is that it avoids unnessary service calls - must admit I dont understand their reasoning. <br />It is clear that the PB/PG range leaves much to be desired in the 'function' area.
     
  8. Monster

    Monster
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    I also do not understand their logic with the PNR function.

    Also, I have been told that in general 'customers' prefer an integrated set rather than seperates and that the seperates market is suffering. (This came from a salesman in ...Comet yes, I know!)

    As far as the other problems with the TV are concerned I also have intolerable moire with NTSC signals which can also be seen to a lesser extent with all other sources including terrestrial TV via a conventional ariel! There are also gemoetry problems and Buzzing( this is quiet enough not to be a real problem).

    The engineer is due to arrive tomorrow morning and I will be interested to see what he has to say. The geometry, I am pretty sure, he will be able to rectify via the service menu but if he cannot fix the moire I will be looking to replace the set. (Probably with a Toshiba 32ZP18B)
     
  9. Colger

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    In case anyone has missed earlier threads, Panasonic are investigating the moire' patterning problem as well as the dark vertical bands on the L & R of the screen. The guy dealing with this returns to the office next week and I am hoping for an update on these problems.<br />Incidentally, I have found that using 100Hz rather than Auto, or progressive scanning minimises the effect of the moire' patterning which I only notice on NTSC.<br />This is on a 32 inch screen and I would suspect the effect is magnified on a 36 inch screen.<br />Earlier threads also noted that some service engineers slightly defocus the picture to minimise the moire' effect
     
  10. rimmers

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    I have just noticed last night that the moire effect on the PB series is slightly visible on PAL TV. It is hardly noticeable but nonetheless there.

    I have also noticed that if you select 100Hz when watching NTSC that the effect is reduced.

    Are Panasonic aware of these problems on the PB series as well.

    Neil
     
  11. Dave Nicholson

    Dave Nicholson
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    I have the Panasonic 32PG30 (Nicam model) connected to a Denon AVR3801, and it works fine with the TV volume off.

    Your problem must be restricted to the surround sound models in the PG range.
     
  12. mandlebrot

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    I'm so glad you posted about the PG30 Dave, had I actually downgraded from the PG50 to the PG30 because the DD was crappy and the tv had a lot of buzzing.

    So I thought nicam set and external amp, then I read all these messages and start worrying has the PG30 wont let you turn off the internal speakers in the menu.

    Can you or anyone else confirm that if I connect an external DD amp to the PG30, I just turn the tv volume right down without it affecting the volume on the amp?

    Fractal<br />P.S. has there been any word from Panasonic on the NTSC moire problems yet, e.g. A fix?
     
  13. eXOBeX

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    A long gap between postings here, but I'd just like to point out that my TX-36PB50 has the same problem (line-outs are VERY quiet, certainly not normal line-level).
    Does anybody out there have a PB50 with decent line-out level? If so, it might be interesting to compare Service Menu 2 hex-settings, in case one of these has been mis-set?
    Mine are: 0D 00 13 10 00 50 00 41 85 80 19 48 FA
    (chassis is Euro7, firmware is V3.050 9/10/2001)
     

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