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| An observation of the SDP-E800 signal processor. https://forum.lddb.com/viewtopic.php?f=24&t=3781 |
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| Author: | dumbchemist [ 21 Feb 2014, 16:02 ] |
| Post subject: | An observation of the SDP-E800 signal processor. |
In case you don't know it, the SDP-E800 will NOT decode DTS. I checked its service manual and its operating instructions and can find no reference to DTS decoding. I also confirmed this when I tried to play the sound for a DTS LD (Casper) through the E800 and use its line level to feed my AVR's multi-channel inputs. This is too bad as I wanted to use the E800 to do DTS and Dolby sound decoding (Dolby works pefectly). |
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| Author: | substance [ 21 Feb 2014, 16:24 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
I wouldn't prefer any decoding actually. AFAIK E800 can convert RF signal into digital coax for your receiver to decode. Although the AC-3/DTS decoding will not improve much from this device to a much newer modern AVR however any modern AVR will have much more precise delay, channel level, crossover functions. Unfortunately most modern AVRs(other than really high end) will not pass 6ch external input directly into its output. AVR will digitize for volume control and possibly for other processing. This means multiple Digital to Analog, Analog to Digital conversions in the chain. It is best to pass AC-3 info to your AVR in digital and let your AVR handle decoding, crossover points, level, delay, possibly room correction/equalizer functions in digital domain. For example a newer AVR allow you to adjust delay per channel in 0.1 FT increments, Level in 0.5db and crossover settings in 10hz increments(individual points per channel is possible). Most old decoders will give you one crossover point at 80hz for small speakers. Delay in 0.5ft increments and level in 1db. Now if E800 had multiple RF inputs for multiple LD players, it would make a nice switch. |
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| Author: | elahrairrah [ 21 Feb 2014, 16:40 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
Yeah, you gotta be careful with some of these older processors as they will only do Dolby Digital (no RF Demodulation!) and Pro Logic. This Technics DSP that I had some time ago did both Dolby and DTS though . . . http://forum.lddb.com/viewtopic.php?p=16479#p16479 Worked really well too. |
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| Author: | rchiffelle [ 21 Feb 2014, 17:11 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
The E800 will pass DTS, I have a few and they've worked fine as AC3 demodulators. Unfortunately there is no remote power button, and analog isn't converted to digital so I still have to have those cables from the players to the AV receiver. EP99ES is a better unit, but again no remote power button, bizarre really, I prefer not getting up to turn components on. |
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| Author: | elahrairrah [ 21 Feb 2014, 18:31 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
rchiffelle wrote: The E800 will pass DTS Then why doesn't it say so in this marketing sheet?https://docs.sony.com/release/specs/SDPE800_mksp.pdf It should also have the DTS logo on the front if it would decode DTS. In fact, it's specifically called a "Dolby Digital Decoder" Now you're saying "pass DTS." Well, not sure what you mean there, but this DSP definitely won't decode DTS. |
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| Author: | integra [ 21 Feb 2014, 18:46 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
By "Pass" it means: DTS signal received at the digital input, will go out on digital output. No conversion, but just pass thru. |
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| Author: | elahrairrah [ 21 Feb 2014, 19:17 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
Then it's just a waste of space if you're trying to decode both DTS and Dolby Digital. Best just to replace it. |
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| Author: | dumbchemist [ 22 Feb 2014, 15:51 ] |
| Post subject: | Re: An observation of the SDP-E800 signal processor. |
Let me clarify what I meant. The SDP-E800 and my AVR (STR-DA2ES) have the Dolby Digital Pro Logic label on them. My AVR also has the DTS ES 96/24 label on it. The E800 service manual states: "This processor incorporates the Dolby Pro Logic Surround System. Manufactured under license from Dolby Laboratories Licensing Corporation." No where in the manual can I find a reference to DTS. When I said "passes through", I meant that the E800 did not indicate that the signal was DTS and only passed the optical signal to the AVR. If you use the 5.1 signal output of the E800 to feed the multi-channel input on the AVR, you will only get the front 2 channels which indicates that the E800 does not process the DTS signal. I still plan on using the E800 as it makes a good switcher for optical signals. I currently have a CLD-D406 connected to the digital 1 inputs and a Sony MDP-600 attached to the digital 2 input. The D406 is feeding its AC-3 and optical audio signals into the E800. The Sony is passing its optical audio output into the E800 digital 2 input. In the future, I plan on putting an A/D converter on the line level output of the D406 and feeding the coax output of the converter into the digital 1 coax input. In this way, I can play those rare discs that I have that lack the digital sound track. |
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