rscott4563
Standard Member
Ok I've read an article on PL2x and I thought I had a pretty good grasp on how all the Dolby Digital/Pro Logic/THX systems worked but I have a question, which hopefully someone can help me with.
This is what I understand so far:
*If I have a 2.0 source then I can get 5.1 with DD PL2/DTS NEO6
*If I have a 2.0 source then I can get 6.1 with DTS NEO6
*If I have a 2.0 source then I can get 7.1 with DD PL2x
*If I have a 5.1 source then I can get 6.1 with DD EX/THX EX/DTS ES (this can be with a single rear speaker or with two on some amps, but with two they are using the same signal so still 6.1, just to disperse the sound a bit better)
*If I have a 6.1 source (DTS ES Discrete is the only one as far as I know) then I can get 6.1 with DTS ES Discrete
*If I have a 5.1 source then I can get 7.1 with DD PL2x/THX Ultra 2 (these will give me stereo rear surrounds, not two rear speakers using the same signal, as with DD EX or THX EX)
Also DD PL2x and THX Ultra 2 work out there rear stereo surrounds differently, DD PL2x uses PL2x (obviously), but THX Ultra 2 uses its own processing called ASA, and when THX Ultra 2 is creating 7.1 from 2.0 it uses normal PL2 to work out the extra 3.1 and then its own ASA for the rear 2 surrounds.
Is this correct, is there anything I've missed??
(I'm obviously not counting surround systems such as Logic7 or DSP's)
I'd really appreciate some feedback as I've gathered all of this from various sources and forum posts and so I'm not really sure if I've really understood it properly.
Cheers
Ryan
This is what I understand so far:
*If I have a 2.0 source then I can get 5.1 with DD PL2/DTS NEO6
*If I have a 2.0 source then I can get 6.1 with DTS NEO6
*If I have a 2.0 source then I can get 7.1 with DD PL2x
*If I have a 5.1 source then I can get 6.1 with DD EX/THX EX/DTS ES (this can be with a single rear speaker or with two on some amps, but with two they are using the same signal so still 6.1, just to disperse the sound a bit better)
*If I have a 6.1 source (DTS ES Discrete is the only one as far as I know) then I can get 6.1 with DTS ES Discrete
*If I have a 5.1 source then I can get 7.1 with DD PL2x/THX Ultra 2 (these will give me stereo rear surrounds, not two rear speakers using the same signal, as with DD EX or THX EX)
Also DD PL2x and THX Ultra 2 work out there rear stereo surrounds differently, DD PL2x uses PL2x (obviously), but THX Ultra 2 uses its own processing called ASA, and when THX Ultra 2 is creating 7.1 from 2.0 it uses normal PL2 to work out the extra 3.1 and then its own ASA for the rear 2 surrounds.
Is this correct, is there anything I've missed??
(I'm obviously not counting surround systems such as Logic7 or DSP's)
I'd really appreciate some feedback as I've gathered all of this from various sources and forum posts and so I'm not really sure if I've really understood it properly.
Cheers
Ryan