Joemeek oneQ2 Master Studio Channel
Mix Magazine "Compression And Compressors"
By Barry Rudolph
There are seven analog processors in this single channel unit: mic preamp/Input section, Joemeek's signature optical compressor, Meequalizer, De-Esser, Enhancer, Master Fader and A/D converter. Any section can be inserted, "On" in Meekspeak, into the signal chain at the touch of a button. The large, lighted Nissei VU meter switches between measuring the preamp's output, gain reduction, and final output. The Master Fader section provides up to +10dB additional level and functions as a master fader for direct recordings. Burr-Brown OPA2134 op amps are used throughout and the input Gain control now ranges from 18dB to 60dB for both the mic and line inputs. A Cinemag transformer (CMM1-10PCA) is always inline for the mic input and but also available for line level processing when toggling the Iron switch. The 80Hz, 12dB/octave high pass filter is now available for all three sources: mic, line and the 1/4-inch instrument input. The 1/4-inch DI input now has a 0dB to +40dB operating range. The mic preamp accepts up to +24dBu with the -20dB attenuator pad inserted. The line input gain range is now -19dB to +22dB with unity still at the straight up 12 O'clock knob position. A red LED lights when the preamp section clips at around +15dB. The Input section finishes with +48-volt phantom, polarity flip, line/mic button, and a rear panel unbalanced TRS send/return insert jack. The A/D converter has AES/EBU, S/PDIF, and Lightpipe TOSLINK digital output connectors, plus BNC connectors for external Word clock in/out. The original 24-bit Wolfson A/D converter is used with sample rates up to 96kHz selectable on the rear panel. The output Peak FSD LED lights at +16dBu or 2dB below full-scale digital clip. There is a single balanced TRS 1/4-inch analog line level input jack on the rear panel that utilizes the otherwise unused right channel of the stereo A/D converter.
Compression, EQ and More The compressor section is unchanged and uses the same Silonex opto-coupler. Controls are: Compress for setting threshold, Slope or ratio adjustable from 1:1 to 10:1, program-adaptive Attack and Release controls, and a Make Up gain control. The Post EQ button toggles the compressor before or after the Meequalizer. The Meequalizer has two overlapping semi-parametric mid-range sections: low-mid section has a variable frequency range from 120Hz to 2kHz and the high-mid section goes from 600Hz to 10kHz. They each have a fixed Q of 0.9 There are two 12dB/octave shelving EQs. The high shelf has 7kHz and 14kHz positions and the low shelf with 80 and 120Hz choices. The Enhancer section has a variable control over the frequency: 800Hz to 16kHz--above which boost is dynamically added according to the amount set by the Effect control. The Q knob sets the amount of a resonant peak at the selected frequency from 0 to 10. The De-Esser has a Listen button to aid in setting controls for its frequency (Tune) from 2kHz to 10kHz and amount (De-Ess) 0 to 10. All the sections and controls on the oneQ2 Master Channel interact greatly; while audio is coursing through the unit, there is an unavoidable level shift or slight pop when toggling in/out any of the sections. Feeling The Love For all evaluations, I kept the Cinemag transformer always inserted; it rounds out the low frequencies in a clean, polyunsaturated way. I used the secondary analog line level input that feeds the right channel of the unit's built-in A/D converter the best way to evaluate the oneQ2 Master Channel's performance because a common A/D is used throughout all testing. I routed the A/D converter's digital output to the stereo AES/EBU Enclosure XLR input on the back of my HD 192 I/O and recorded into Pro Tools HD 10 24-bit/44.1kHz. I externally clocked both the HD 192 and the oneQ2 from my Benchmark Media ADC1 A/D converter over short BNC cables. My first test was recording a direct Fender Strat. I used the Creation Audio Labs Studio Tool MW1 to provide two identical guitar signals from one instrument. One signal connected to the oneQ2 DI jack and the other to a RTZ Professional Audio 9762 Dual-Combo Mic Preamp--it also has a high impedance DI. The line level output of the RTZ connected to the second analog input on the back of the oneQ2. The RTZ is a copy of the Neve 1272 circuit but custom-built to mil-spec.
When a 1/4-inch plug is inserted into the front of the oneQ2, the XLR mic input is defeated. Having a front panel mic input XLR is handy but there should be a way to disconnect it from the rear panel mic XLR--they are hard-wired in parallel.
å A troublesome direct bass guitar recording was easily fixed using both the Compressor section and the De-Esser section to reduce transitory, bright moments, especially whenever the player/part went up the octave or he did occasional "pops" that jutted way out in front of my mix. Using the Listen button, I set the frequency to 2kHz and was able to come to a good balance without the tedium of drawing breakpoint automation--plus this sounds better. The Enhancer section works the other way around from the De-Esser. Using both sections together at cross-purposes: boosting frequencies above 1kHz, Q knob on 10, Effect on 10 with the Enhancer and then De-Ess at 5kHz; these two sections become analog sound-designer tools capable of very interesting sound treatments akin to software-based tools--plus this is faster. The Meequalizer works excellently for both smooth touches--+/-3dB all the way to massive EQ cranks, vocal effects and radical boost/cut EQ styles. It has a broad mid-range character and overlapping frequency ranges. For all microphone preamp tests, I used a transformer mic splitter box made using a Jensen JT-MB-E to split the output from a Pearlman 250 tube condenser microphone (cardioid, no roll-off, no pad) between the oneQ2 and the RTZ. I used about 50dB of gain on both units for quiet singing. I found the oneQ2 to sound slightly thicker and the RTZ more linear in its overload characteristics. The oneQ2 is excellent for vocal recording or processing during mixing. In general, I preferred using the compressor first in the chain followed by various amounts of the Meequalizer, Enhancer and De-Esser--a little of those three goes a long way for natural sounding recordings.
Barry Rudolph is an L.A.-based recording engineer. Visit his Web site at: WWW.BARRYRUDOLPH.COM ![]() This Review Is Copyright © 2010 Through By Future Plc, an international media group and leading digital publisher. All Rights Reserved.
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