Hook up Plasma TV to Audio system

If the TV doesn't have analog audio outputs, you will need to run the optical through a DAC. Otherwise you would need to run analog audio from your video sources directly to the 150, bypassing the TV.

Also, probably, the DAC will have to support DolbyDigital, not just PCM.

I was anticipating the same as you when I got my new Plasma as I thought the speakers wouldn't be good enough for casual listening. For HT (blu ray) I simply run the OPPO directly to my integrated.

If all you have is a Toslink audio out, you can try this:
http://www.amazon.com/ViewHD-Optical-Converter-Simultaneous-Headphone/dp/B007KXI2R8/ref=sr_1_5?ie=UTF8&qid=1353295115&sr=8-5&keywords=toslink+to+rca+adaptor
or
http://www.amazon.com/D3-Digital-Converter-Optical-Toslink/dp/B005K2TXMO/ref=sr_1_8?ie=UTF8&qid=1353295956&sr=8-8&keywords=toslink+to+rca+adaptor

Hope this helps.

All the best,
Nonoise

You also have to consider what kind of audio you want to send out of the TV to your receiver/DAC. 5.1 surround coming over the air through a digital antenna is almost always piped out of the TV's optical input, but audio coming thru HDMI (high def or not) is almost *never* piped out of the TV's digital output. I don't know about audio signals coming from cable boxes or DVRs, I don't own any of these. It has to do with the internal boards inside the TV, this defines which audio input, and what kind of audio, gets output thru Toslink.

Eagleman6722, I intended to buy Panasonic Plasma and connect it to my DAC in 2 channel (PCM only) system but found out that it does not have DOLBY/PCM optical output format selection in the menu. It outputs automatically PCM with NTSC and DOLBY with ATSC.