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Trusted musician and artist reviews for Lexicon PCM-91
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Lexicon PCM 91 Digital Stereo Reverb Processor
High quality reverberation...
The Lexicon PCM 91 gives you Lexicon’s renowned high-end reverb effects with a powerful new interface that provides easy access to superbly crafted presets as well as a wealth of programming capabilities for the sound designer.
The Lexicon PCM 91 contains a built-in library of 450 reverb effects that simulate realistic halls, rooms and plates, and let you create completely natural, or other-worldly spaces. The presets are organized into 9 Banks of 50, and are functionally grouped for different applications. Be sure to experiment with all 450 presets to get a feel for the full range of Lexicon PCM 91 capabilities.
A program sorting function allows you to tag programs with KeyWords and display only programs which have been tagged. (Press Program Banks or Register Banks repeatedly to step through all available banks and then to the KeyWord display.) The default KeyWord selection, A to Z, allows you to view all of the presets in alphabetical order. Others allow you to view, for example, only Acoustic or Spatial effects. Each preset has already been assigned from 1 to 4 KeyWords – you can easily change these assignments in Edit mode. The selection of the KeyWord you want to use for sorting is accessed in Control mode.
Each preset has one or more of its parameters patched to the front panel ADJUST knob, giving you instant control over the primary aspect of the effect – without going into Edit mode. As many as four additional Custom Controls can be created for any effect, allowing you to tailor presets for specific applications. We’ve created some interesting Custom Controls in the presets, and assigned them descriptive names. You can change both the parameter assignments and the names in Edit mode.
The Lexicon PCM 91 uses 5 stereo algorithms to create different types of reverb effects and 10 Dual Reverb algorithms which offer superb dual reverb and cascade configured stereo effects. Each single algorithm includes an uncompromised stereo reverb effect with selected “tools” for ambience, post-processing, compression/expansion, as well as modulation and patching parameters which are common to each algorithm. Each dual algorithm contains two independent reverb blocks, as well as the full set of modulation and patch features in the single effects.
The Lexicon PCM 91 gives you a unique set of tempo controls.Tempos can be tapped in with the front panel Tap button (or an assigned controller) or “dialed-in”, in BPM (beats per minute) on the display.
The Lexicon PCM 91 also lets you generate MIDI clock from your tempo, as well as receive MIDI tempo from an external sequencer or drum machine. In the Lexicon PCM 91, tempo can control LFO speeds and Time Switch controls, as well as all delay parameters, ensuring that all of your modulations are in tempo with your music. You can even set independent rhythmic values for different parameters within a single program.
Tempo can be set and displayed in either rhythmic value or time values. Many presets have delay times assigned to Tap tempo. Try loading some of these and pressing Tap twice in rhythm to change tempo.
An enormous range of editing control is provided for each algorithm, with parameters organized in an edit matrix. In addition to providing this powerful sound design capability, the Lexicon PCM 91 also allows you to customize these controls for your day-to-day editing needs, or to use a subset of controls specially designed for each preset.
The Lexicon PCM 91 has two levels of Edit Mode control called Go mode and Pro mode. In Go mode, the most useful parameters within an effect are grouped for instant access via the front panel Edit button.
Parameters can even be grouped for control by a single master control. These master parameters, called Custom Controls, can be labeled with names that describe their function. Each preset has a specially selected set of Go mode parameters which let you make value changes to the effect without losing the character of the sound. Pro mode gives you access to the full parameter editing matrix for the algorithm of any loaded effect when you press Edit.
In this mode, you can access a complete set of Modulation and Patching parameters, create your own ADJUST knob patch, create Custom Controls, and assign your own Go mode parameters.
A unique Patching and Modulation system provides unprecedented control over your effects, with a versatile set of internal modulators: two LFOs, AR Envelope, Envelope Follower, Latch and Time Switches, MIDI Delay and Sample and Hold. These allow you to create modulation sweeps which move in time with music, or animated effects. You can create as many as 10 patches per effect, each with as many as 8 pivot points. You can patch multiple parameters to a single controller, or patch multiple sources to a single destination.
For all of its programming power and flexibility, you’ll find the Lexicon PCM 91 simple to use. The large, 2-line fluorescent display is easy to see from any angle whether the surroundings are bright or dark.
Separate SELECT and ADJUST knobs make program loading and editing quick and easy. We’ve even designed in a special Info mode – press and hold any button to find out what its function is, or to get status information such as the name of the running effect, current tempo rate, etc.
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 Crosstalk -55dB 10Hz to 20kHz THD <0.006%, 10Hz - 20kHz Dynamic Range D/A:>98dB typical, 10Hz - 20kHzA/D:>105dB typical, 10Hz- 20kHzA/A:>96dB typical, 10Hz - 20kHz MIDI Interface 5-pin DIN connectors for MIDI IN, THRU and OUT 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 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 wattsAutomatic 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