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Do I need an AC-3 demodulator if my LD player has a digital output? And where to buy?

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Do I need an AC-3 demodulator if my LD player has a digital output? And where to buy?

Old 01-24-02, 11:19 AM
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Do I need an AC-3 demodulator if my LD player has a digital output? What about DTS?

I'm looking at some LD players on ebay. Some only have AC-3 RF outputs, which of course require a demodulator since my receiver (Onkyo TX-DS797) only has coax/optical inputs. However, some LD models have optical or coaxial outputs. Can my receiver decode Dolby Digital on its own via the LD player's digital output, or do I have to get a demodulator and use the RF output? I've heard that an LD player has to be "Dolby Digital ready" in order for its digital output to be decoded by an external processor. Otherwise the receiver can't decode the digital signal.

Any recommendations on where to buy older LD players and demodulators are welcome also. The only place I know right now is ebay. I don't want a newer combo DVD/LD player since I already own a high-end DVD player (Toshiba SD9200).

Thanks

Last edited by thirdkind; 01-24-02 at 06:32 PM.
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Old 01-24-02, 12:13 PM
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To playback the AC-3/DD audio track from a LD, you have to use the AC-3 RF output (RCA coax connector) from the LD player (if it has the output) and connect it to a RF AC-3 Demodulator, which will then output a "normal" DD bitstream (like the one from your DVD player) and hook that output up to your receiver's digital input.

The LD's digital output is just for PCM digital data for the digital stereo tracks on most LDs, this should not be confused with the AC-3/DD audio track, which resides in RF modulated form on the right analog track on the LD.

Ebay is probably the only place to find one, and they still tend to be expensive.
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Old 01-24-02, 01:06 PM
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Demodulator

I really like the Pioneer brand LD players. I have the CLD-D704 which has the same transport as their Elite models (particularly the CLD-99)

There are quite a few RF Demodulators out, although I'm not sure how many are currently in production (if any still).

The one I currently have is the Nakamichi DE-1.
See my system: http://www.geocities.com/jinhopark/photopagespiral.html

Lexicon also makes one, which is called the LDD-1.

Sony has one called the MOD-RF1.

Pioneer has one called the RFD-1.

Yamaha has one called the APD-1.

I have a large collection of LD's that for some reason or other is not, or will never, be available on DVD's. The Star Wars Trilogy is first rate...
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Old 01-24-02, 01:14 PM
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I've already grabbed the Star Wars trilogy (definitive collection) even though I don't have the player yet

So how much should a demodulator cost? There are a couple brand new ones on ebay right now, including the Yamaha (currently at ~$100US).
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Old 01-24-02, 01:48 PM
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Fair price

I would say $150 would be a fair price for a new one. I paid $200 (included shipping) for my Nakamichi model a few years back.
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Old 01-24-02, 06:16 PM
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What about DTS?

What about DTS laserdiscs? Is the digital output on any LD player enough, or does this require a "DTS ready" LD player or external decoder?
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Old 01-24-02, 06:28 PM
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Re: What about DTS?

Originally posted by thirdkind
What about DTS laserdiscs? Is the digital output on any LD player enough, or does this require a "DTS ready" LD player or external decoder?
If the player has a digital output (not the AC3 output), then it can pass the dts signal to your receiver/processor.

Also, the Definitive Collection boxed set is only Dolby Surround encoded, and not 5.1, so you don't need to worry about a demodulator for those titles. The Special Editions on the other hand...
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Old 01-24-02, 06:38 PM
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Re: Re: What about DTS?

Originally posted by DVD_O_Rama
Also, the Definitive Collection boxed set is only Dolby Surround encoded, and not 5.1, so you don't need to worry about a demodulator for those titles. The Special Editions on the other hand...
I'm a purist. I'd rather have Han shooting Greedo first than 5.1 surround
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Old 01-24-02, 08:11 PM
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Re: Re: Re: What about DTS?

Originally posted by thirdkind


I'm a purist. I'd rather have Han shooting Greedo first than 5.1 surround
Understandable, but seeing as how you mentioned needing a demodulator first, then owning the Def. Collection, I'd just thought I'd let ya know. I guess I'm not a purist, as I own both versions
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Old 01-24-02, 09:19 PM
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I actually didn't know that they were plain old Dolby Surround. I'll probably end up picking up the Special Edition just to have it as a comparison. Is it much better visually as well?

Most newer LDs are done in Dolby Digital right? I prefer DTS, but since it's not available on everything, Dolby Digital is the next best thing. I figured the number of LDs done in DD makes the cost of the demodulator justifiable.
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Old 01-26-02, 03:19 PM
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Are there any LD players that do not require the use of a external demodulator for 5.1 surround?
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Old 01-28-02, 06:58 AM
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Don't kid yourself, IIRC, the first AC-3 LD was Clear and Present Danger (around 1995), the number of AC-3 titles out there isn't all that great, and most of the stuff you'll find will indeed be encoded in plain old Dolby Surround. As AC-3 was getting added to Lds, the birth of DVD led to the demise of the LD market, which contributed to the dearth of AC-3 LDs relatively speaking.

The dts LD are pretty well done (I own over 40 of them). And it doesn't require an AC-3 RF demodular (though I do own the Yamaha APD-1, which only gets a workout when I play The Phantom Menace AC-3 LD).
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Old 01-29-02, 11:05 AM
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That many?!?!

The dts LD are pretty well done (I own over 40 of them). And it doesn't require an AC-3 RF demodular (though I do own the Yamaha APD-1, which only gets a workout when I play The Phantom Menace AC-3 LD).
I didn't realize that there were that many DTS LaserDiscs... Where might I find a complete listing of all of them?
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Old 01-29-02, 11:26 AM
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There were over 100 different dts LDs put out in the late 1990's.

The only place I can think of is:

Lasertown, but it's just a list of in stock titles, which aren't all that great. (Click on the "laserdisc" link on their home page, and scrool down for the "dts" LD icon link).

dts Online used to have a list of all their dts LDs, but it's not up anymore.

Try doing a google search...
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Old 01-29-02, 03:34 PM
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Here is the list

Where might I find a complete listing of all of them?
Right here. I have all of these in my collection, including one I bought from Patman.....

12 Monkeys
Alien Resurrection
Apollo 13
Armageddon
Austin Powers
Babe
Blade
Blown Away
Boogie Nights
Born on the Fourth of July
Broken Arrow
Carlito's Way
Casino
Casper
Con Air
Crimson Tide
Crow
Dante's Peak
Dark City
Daylight
Deep Rising
Die Hard 1
Die Hard 2
Die Hard 3
Dragon:The Bruce Lee Story
DragonHeart
Eagles:Hell Freezes Over
English Patient
Eric Clapton Unplugged
Evita
Firestorm
Flubber
Frighteners
From Dusk till Dawn
Gate to the Mind's Eye
Get Shorty
Getaway
GoldenEye
Good Will Hunting
Great Expectations
Halloween H20
Happy Gilmore
Hard Target
Heart and Souls
Hercules
Hoodlum
Imax Super Speedway
In the Mouth of Madness
In the Name of the Father
Independence Day
Jackie Brown
Jackie Chan's First Strike
Jurassic Park
Kingpin
Kull the Conqueror
Last Man Standing
Liar Liar
Long Kiss Goodnight
Lost in Space
Lost World: Jurassic Park
Man in the Iron Mask
Mask
Mimic
Mortal Combat 1
Mortal Combat 2
Most Wanted
Mr. Holland's Opus
Mr. Nice Guy
Mulholland Falls
Night Before Christmas
Phenomenon
Pocahontas
Pulp Fiction
Red Corner
River Wild
Rob Roy
Ronin
Rush Hour
Schindler's List
Scream 1
Scream 2
Seven
Shine
Six Days, Seven Nights
Spawn
Species
Speed
Stargate
Strange Days
Street Fighter
Sudden Death
The Game
The Hunchback of Notre Dame
The Jackal
The Nutty Professor
The Quest
The Rock
The Shadow
The Wedding Singer
Timecop
Tina Turner:Live in Amsterdam
Titanic
Tomorrow Never Dies
Toy Story
True Lies
Vertigo
Village of the Damned
Volcano
Wag the Dog
Waterworld
West Side Story
X-Files
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