grl@drutx.UUCP (LymanGR) (08/30/85)
NEW PRODUCT ANNOUNCEMENT
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The LIRPA CD Enhancer/LP Record Simulator:
==========================================
A revolutionary new device for all those who believe that CD players
produce "mid-fi" results, and that analog recordings (LPs) are superior
to CDs.
PURPOSE:
~~~~~~~~
This device allows you to taylor the signal produced by the
Compact Disk medium to more closely resemble that of LP records.
It can be placed between the Compact Disk player and your
receiver, in a tape monitor loop or external processing loop, or
between the preamp and power amplifier of your stereo system.
STANDARD FEATURES:
~~~~~~~~~~~~~~~~~~
o HARMONIC DISTORTION GENERATOR: Adjustible from 0% to 100% THD
(total harmonic distortion). This allows you to increase the total
harmonic distortion of the Compact Disk from 0.01% to levels found
on typical LPs played with "top-of-the-line" stereo cartridges
(commonly 1% THD +). An additional benefit is found in that this
control also contributes to that ultra-sonic information above
22kHz which was lost in the digital process.
o SEPARATION-REDUCTION CONTROL: Permits variable blending of left and
right channels over a range from 90dB separation (found on Compact
Disks) to full blending (monophonic sound). Adjustment of about
30dB separation is recommended to simulate the typical "state-of-
the-art" stereo cartridge.
o DYNAMIC RANGE COMPRESSOR: Now you don't have to worry whether your
power amplifier or your speakers are "Digital-Ready". This knob
allows you to reduce the dynamic range of the Compact Disk from
90dB to as low as 45dB. This is a definite "must" for those who
prefer the TELARC 1812 LP to the TELARC 1812 CD (suggested adjustment
for this recording: 65dB).
o SUB-SONIC DOPPLER DISTORTION GENERATOR: Superimposes sub-sonic
information on top of the "music" from the Compact Disk (variable
in the 4Hz to 8Hz bandwidth from "slight warpage" to "fully warped").
This re-creates that breath-taking (and amplifier power-robbing)
doppler distortion created by those subtle warps found only on
analog records but missing from all known Compact Disks.
o SURFACE NOISE GENERATOR: Creates that "sea shore" sound so familiar
with LPs, especially between tracks. Allows you to know whether
there is more music to come or if the CD has come to the end.
o RANDOM POP GENERATOR: You could never tell where that next "pop"
was going to come from when playing your favorite LPs, despite
meticulous cleaning on your part. As the Compact Disk does not
contain this useful "pop" information, this switch can be turned
on to produce that familiar noise while listening to your CDs.
The variable adjustment allows simulation ranging from "virgin
vinyl" to that wonderful noise found only on your favorite, well-
played LPs.
o PREDICTABLE POP GENERATOR: This can be set at 33 1/3, 45 or 78
to generate repetitive pops, simulating scratches on an LP at the
various standard speeds.
o WOW, FLUTTER & RUMBLE GENERATOR: Everyone knows that there is no
measurable Wow, Flutter, or Rumble on a Compact Disk, and what a
bummer to not get something like that after paying $16.95 for a
CD! Now you can return to the sounds of yesterday with a simple
adjustment of this knob -- GET WHAT YOU PAYED FOR AND BE ABLE TO
MEASURE IT TOO!
OPTIONAL ACCESSORY PACKAGE:
~~~~~~~~~~~~~~~~~~~~~~~~~~~
o MOVING COIL CARTRIDGE SIMULATOR: Introduces a 6dB peak at 19kHz,
simulating those energetic resonances at very high frequencies
typical of MC cartridges. This causes the music to sound bright,
with added "definition and detail".
o "KA-CHUNK" SIMULATOR: Adds an assortment of interesting sounds
to the information contained on the Compact Disk, including
"familiar sounds of dust covers closing", "needle hitting the
groove", and "end of record 'thunk'".
o ACOUSTIC FEEDBACK LOOP PROCESSOR: Allows your speakers to howl
when the volume is turned up. Especially good for simulating
the effects of a turntable mounted on top of a speaker cabinet.
o DIRT BALL SIMULATOR: Muddles the music from the CD to mimic
the sound of a dirt clot clinging to the diamond during the
playing of an LP.
o MANUAL RECORD PLAYER SIMULATOR/END OF CD ALARM: This useful
accessory emits an audible alarm at the end of the playing of
a Compact Disk. The alarm sound resembles this: "kathwoosh,
kathwoosh, kathwoosh,". It is programmable for the usual
33 1/3, 45, and 78 RPM.
o FLOOR VIBRATION SENSING UNIT: It is very difficult to get a
Compact Disk to skip, but with this deluxe addition to your
Lirpa Enhancer you can actually sense when people walk by your
CD player. Features a sensitive accelerometer which can be
mounted to the floor with a few simple household tools. Movement
of the floor near the sensing unit causes a small electrical
signal to be transmitted to the motorized unit (included) which
mounts to the CD player directly. The motorized unit can then
shake the @#$%& out of your CD player until it causes the CD
to skip, simulating some of the finest analog equipment available.
PRICE INFORMATION:
~~~~~~~~~~~~~~~~~~
o 100% Solid State Model:
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STANDARD PACKAGE: $ 2499.95 (U. S.)
ACCESSORY PACKAGE: $ 1499.95
o Vacuum Tube Model:
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STANDARD PACKAGE: $ 6499.99
ACCESSORY PACKAGE: $ 4499.99
...............................................................................pjk@hou2a.UUCP (P.KEMP) (08/31/85)
LymanGR (drutx!grl) forgot to mention that:
The "MANUAL RECORD PLAYER/END OF CD ALARM" circuit
in the accessory package can also be set to operate
in 20 to 25 minute intervals, requiring that the CD
be removed and re-inserted for the music to continue.
--
Paul Kemp
ihnp4!hou2a!pjk
The above statements are those of the author only,
and are not those of AT&T Bell Laboratories.