
PCM91
2-in/2-out Studio Standard/Live Sound Reverb Processor
The PCM 91 Digital Reverberator offers Lexicon's highest quality reverbs in a compact, affordable package with a powerful interface which allows both easy access and a wealth of programming capabilities for the sound designer. All of the features of the acclaimed PCM 90 are included, plus full AES/EBU I/O, new Dual Reverb algorithms, and new presets with dynamic spatialization effects for 2-channel or surround applications. All of the Dual Reverb algorithms and presets (available for the PCM 90 on a PC card) are built into the PCM 91.
450 presets provide sounds for real-world applications— and a unique KeyWord search and sort function allows you to find the preset you want fast. A PCM CIA card slot allows you to store your own programs on memory cards.
Features at a Glance
- All of the features of the PCM 90 PLUS built-in Dual Reverb
- AES/EBU and S/PDIF I/O
- 15 Algorithms: 5 Stereo and 10 Dual Reverb
- 450 Preset programs; 100 User
- Dynamic spatialization effects for 2-channel or surround applications
Standard Features
- Lexicon's "greatest hits" – reverb algorithms of the last decade including Random Hall, Random Ambience, Rich Plate, Concert Hall and Split Chamber
- Balanced Analog I/O- XLR and 1/4" inputs and outputs
- Digital I/O- S/PDIF and AES/EBU
- Keyword Search: Allows quick, intelligent search of the presets by application (i.e. vocals, drums etc.) or alphabetical order
- A front panel Adjust knob is automatically attached to one or more of the parameters you're likely to want to change in each factory tailored preset. This allows immediate modification of each preset in real time without ever going into the Edit mode.
- Pro and Go Modes: Go mode gives you access to as many as ten hand-picked parameters for any particular preset. Pro Mode allows full access to an Edit Matrix of as many as a hundred parameters.
- Greater than 110dB of Dynamic Range
- Dual Lexichip Architecture- These are our own proprietary microprocessors, custom designed by our own chief scientists to meet Lexicon's rigorous specifications.
- PCMCIA Card Slot for software updates and user-edited preset and system set up storage.
- 450 Factory Presets and 100 Internal User registrations are standard.
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PCM91 Specifications
The PCM 91 Reverb Realism
The PCM 91 offers Lexicon’s highest quality reverbs in a compact, affordable package with a powerful interface which allows both easy access and a wealth of programming capabilities for the sound designer. All of the features of the acclaimed PCM 90 are included, plus full AES/EBU I/O, Dual Reverb algorithms, and presets with dynamic spatialization effects for 2-channel or surround applications (available for the PCM 90 on a PC card).
One of the stunning advances in the PCM 91 is the ability to create incredibly realistic small spaces. For both music and film sound, it is often vital to have the ambiences of a phone booth or very small drum room. In the PCM 91 you can create them with a reality never heard before from any processor other than a Lexicon.
The Interface
Considerable effort went into providing you with processors that are as comfortable to operate as they are a joy to hear. At the top operating level, you s
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| Analog Audio Input |
XLR and 1/4" balanced (T/R/S)
|
| Input Level |
-2dBu to +20dBu, balanced; -22dBu to 0dBu, unbalanced
|
| Input Impedance |
100kΩ, balanced;50kΩ, unbalanced
|
| Analog Audio Output |
XLR and 1/4"T/R/S balanced
|
| Output Level |
+18dBm, balanced;+4dBm, unbalanced
|
| Output Impedance |
125Ω, balanced
|
| Digital Audio Input |
XLR, AES/EBU; Coaxial RCA, S/PDIF
|
| Format |
AES/EBU, balanced; S/PDIF, unbalanced
|
| Sample Rate |
44.1kHz and 48kHz
|
| Digital Audio Output |
XLR, AES/EBU; Coaxial RCA, S/PDIF
|
| Format |
AES/EBU, balanced; S/PDIF, unbalanced
|
| Sample Rate |
44.1kHz and 48kHz
|
| Conversion |
24-bit A/D;24-bit D/A
|
| Internal Audio DSP |
24-bit (PCM 81);20-bit (PCM 91)
|
| Frequency Response |
10Hz - 20kHz ±.5dB
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| Crosstalk |
-55dB 10Hz to 20kHz
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| THD |
<0.006%, 10Hz - 20kHz
|
| Dynamic Range |
D/A:>98dB typical, 10Hz - 20kHz A/D:>105dB typical, 10Hz- 20kHz A/A:>96dB typical, 10Hz - 20kHz
|
| MIDI Interface |
5-pin DIN connectors for MIDI IN, THRU and OUT
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| Footswitch |
1/4"T/R/S connector for two independent momentary footswitches (system detects normal-open, or normal-closed on power up)
|
| Foot Controller |
1/4"T/R/S connector for foot pedal(100Ω- 10kΩimpedance)
|
| Memory Card
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| Connector |
PCMCIA type l cards, 68 pins
|
| Standards |
PCMCIA 2.0 and JEIDA 4.0
|
| Card Format |
Up to 1MB of SRAM (attribute memory not required)
|
| Power Requirements |
100 - 240 volts AC;50 - 60Hz;35 watts Automatic switching (3-pin IEC connector)
|
| Remote Power In |
2.5 mm 9 volts AC (not included)
|
| Dimensions |
19" W x 1.75" H (1U) x 12" D (483 x 45 x 305 mm), rack mount standard
|
| Weight |
6.4 lbs.(2.9 kg)
|
| Operating Temperature |
32°to 104°F (0°to 40°C)
|
| Maximum Humidity |
95% without condensation |
PCM91 Images
This is a small collection of larger images of the Lexicon PCM91. Click on a thumbnail preview below to view a full size version of the image in the thumbnail.
PCM91 Frequently Asked Questions
| Why is the right output of my PCM91 louder than the left output? |
There is a slight precedence effect in the PCM91 which causes one of the inputs to seem slightly more prominent, but this varies quite a bit from setting to setting, and with the type of program material. Tweak the return level on one side to compensate. |
| I would like to store registers from my PCM91 onto a PCMCIA card. Where can I purchase one? |
Ordering blank PCMCIA SRAM Cards for PCM91
Following is some basic information on how and where to order blank PCMCIA (also called PC) Cards for the Lexicon PCM91 Digital Effects Processor.
The PCM91 was designed to address <1 Mbyte SRAM PC cards for storing Register Banks (or user memory banks) of sounds as well as complete Setups (system configurations in control mode). The chart below gives you an idea of how many programs can be stored on different card sizes:
| Card Size |
Banks |
Programs |
| 64K |
2 |
10 |
| 128K |
5 |
550 |
| 256K |
11 |
1150 |
| 512K |
23 |
2350 |
| 1MB |
47 |
2350 |
| (2MB) |
47 |
2350 |
Additional Technical Info: Note that the PCM90 will accept 2MB SRAM cards but will format them as if they are 1 MB. Access time for these cards is 250nsec or faster. The PCM91 can use either 8-bit or 8/16-bit bus configuration. Attribute memory can be present, but is not used. Please consult Page 1-8 of the Owner’s Manual for additional information.
PCMCIA Card Vendors
Digikey
Toll Free: 1-800-344-4539
Phone 2: 1-218-681-6674
fax: 1-218-681-3380
Internet: http://www.digikey.com
Centennial
Toll Free: 1-800-535-3668
Phone 2: 1-508-670-0646
fax: 1-508-670-9025 |
| How do I connect to the PCM91 for a mono input? |
You should use a Y cable from the source to the two inputs of your PCM91.
Last reviewed: 8/24/06 |
| Does the PCM91 include compression? |
The Concert Hall algorithm of the PCM91 includes a digital compressor which increases gain when the signal falls below the threshold that you set. |
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