OUTBOARD

Der Pendulum Audio DS-500 Opto De-esser ist ein super gut funktionierender De-esser im API 500 Format.

OCL-500 Specifications
Format: API® 500 series standard, fully compatible
Input Impedance: 20K!, balanced
Output Impedance: less than 50!
Max. Output Level: +27dBu, balanced
Threshold: off to 20dB of gain reduction at +4dBu
Ratio: 1.5:1 to 15: 1, soft knee
Output: Off to +20dB of makeup gain
Max. Gain Reduction: 27 dB
Frequency Response: +/- 1 dB from 10Hz to 95kHz
Noise Level: better than 78dB below +4dBu, 0-30kHz
Total Harmonic Distortion: less than 0.01% with no compression
Time Constants
Position Type Description
F Fast Peak-averaged by the opto-cell
A Average RMS response
V1 Vintage 1 Three-stage multi-slope (auto)
V2 Vintage 2 Slower three-stage multi-slope (auto)
M1 Manual 1 Medium attack, medium release
M1 Manual 2 Slower attack, slower release
Average and Vintage 1 are the presets in the Quartet.
Vintage 2 is the Vintage preset in the Quartet II.
M1 and M2 are manual attack and release settings
often used in the OCL-2.

• JFET (hard) or MOSFET (soft) peak limiting modes
• Two independent channels with stereo link
• Precise readout of peak reduction
• Stepped input and output controls ideal for mastering or session recall
• Limiter circuit out of the signal path when below threshold
• Transformerless Class A solidstate design

• All tube, short signal path design
• Pure class A, high voltage circuitry
• Transformerless tube output stage capable of delivering +35dBu
• Low noise, wide bandwidth and superior transient response
• Choice of mic input transformer for 'full' or 'focused' sound
• 30dB gain range in 3dB steps
• Fully transformerless DI with 100k, 1M and 10M input impedances
• Ten position mic locut filter (20180Hz)
• Goldplated switch contacts, I/O connectors and tube sockets
• Polypropylene caps and metal film resistors (pairs matched to 0.1%)
• Fully regulated high voltage (300V) and filament power supplies with softstart warmup and muting
• Custom toroidal power transformer with shield for minimum hum

• Fast electrooptical input attenuator with an all tube signal path
• Softknee design with fully adjustable compression ratio
• Transformerless high voltage class A signal path
• Low noise, wide bandwidth and superior transient response
• Custom optical cells matched for precise stereo balance
• Three sidechain operating modes: Fast, Presets and Manual
• Two completely independent channels with stereo linking
• Hard bypass switches for each channel
• Sidechain inserts for frequencydependent compression and deessing
• Transformerless output stage capable of delivering +35dBu
• Softstart warmup with output muting
• Goldplated switch contacts, I/O connectors and tube sockets
• Fully regulated high voltage (300V), filament and bipolar power supplies
• Custom toroidal power transformer with shield for minimum hum
• Polypropylene capacitors and metal film resistors
• Singlesided audio pc boards to minimize capacitive interaction

The Quartet is an all-purpose recording tool designed with the ultimate in sound quality and flexibility in mind. We have combined four elements - Mic/DI preamp, Opto-compressor, EQ, and De-esser -into a fully integrated package that it makes it easy to track any source. In addition, the Mic/DI preamp, EQ and Compressor/De-esser are completely independent entities that can be patched out and used separately - a hand feature that makes it a valuable tool for mixing as well as tracking.