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Anyone know where I can get the Empirical test disk for the DTS 6D? or any other test disks? I dont see any in the warehouse.
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Is it the DS3 iso? -
There are marketing DTS discs on eBay, but I assume those are different than the test disk you are seeking.Comment
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All you need to setup the 6D is the DS5 disc.Comment
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I think Frank's after the specific disc by that name mentioned in the manual, particularly the post 1997 version would be useful. There doesn't seem to be an ISO of it hosted visibly in the warehouse.
If it shipped with the unit, I'm sure one of us with a 6D lying around has the disc floating around our booth. There is a mountain of music and other discs I have not thoroughly combed through in my back room, will check on my end. Although now that I think about it, the post 1997 version would most certainly not shipped with the units.
It's name does not correspond to the DSnum discs mentioned separately in the manual.
Maybe Datasat has those ISOs still?
DTSTestDiscs.png
Contents of Empirical Test Disc:
EmpiricalTestContent.pngComment
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Ryan do I need the empirical disk? Or will the test disk in the warehouse be enough to get levels.Comment
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Shouldn't current LFE level be at 91db? Same for the DS1:
2025-03-27 16_53_42-DS1.jpg.png
Latest DS5:
2025-03-27 17_01_11-Microsoft Word - TN-E40001B _DS5infofinal_ Rev 14 Feb 03 PM.doc.png
TN-E400-01B.pdf
I have all these setup discs except the strobe and speed test.Comment
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Kinda depends on if your DTS is the primary digital room processor or not. Useful if yes, but if you have an upstream processor I would assume leave all the DTS adjustments default/flat (that is our setup, though we have an 650/XD10 feeding an AP20.
the disc seems mostly related towards B chain, but has other items too.Comment
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I went through our discs pile and found a couple cdr’s labeled “DTS Test”, one dated 2007. But neither would read in the one laptop with a drive. Pretty scratched, I’ll try again after cleaning with a better reader, just curious what they are now.
The effort wasn't entirely pointless. I found the Disc A for 70mm "Dr. Doolittle", which corresponds to our one DTS 70mm test loop. As well as a disc labeled "Pink & Brown Noise", presumably just stereo CD Audio.Comment
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I wonder what's on the 2007 discs.Comment
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subwoofer level changed over the years with DTS.
It used to be 85dB if memory serves then they switched to the RP200 standard which says it should be +10dB "in band gain". Disks which follow this new standard have "RP200" printed on it - again, if memory serves. See this 1996 extract from the installation manual
dtsxx.jpg
The latest and greatest way is to use provided test tones and adjust the outputs using a TrueRMS multimeter - DTS released a simple breakout board to use. You set all your outputs to 300mV and happy days. That basically means "levels are flat". The room levels are done in the cinema processors - unless you don't have one but I can't see a situation where a DTS-6/6D would go straight into amplifiers!
The RTA/SPL thing is simple: in an ideal world your subwoofer is flat 20hz to 150Hz. If you set the perfect LFE to +10dB compared to the centre channel (that is: the RTA line is 10dB higher ON THE RTA SCREEN, so it matches the 82dB line in 1/3 octave) then a C-weighted SPL reading should read 91dB. But if your LFE is not flat or doesn't extend down to 20Hz etc, then if you set what's left of the LFE to the same RTA level, the SPL will read a lower value.
Also, it's C-weighted which means that those low frequencies are really not considered a lot in the equation. That's why they recommend using an RTA. Nowadays, the SPL number is only an indication, you really want to look at the curve. I believe the latest standard iteration is also moving to A-weighted instead of C.
Fun fact: I've met so many cinema techs over the 35mm years who thought that "+10dB in band gain" meant 95dB
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I added the disc to the warehouse under MANUALS > SOFTWAREComment
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Thank you Brad
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