4 Channel Mic Preamp

Manley Labs Voxbox Combo Tube Channel Strip

Product Code: ga16541
Availability: In Stock

$16,497.00 $26,065.26

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Description
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The VOXBOX Combo Tube Channel Strip from Manley Labs is a signal processor with mic preamp, compressor, EQ, and De-Esser/Limiter. While the unit can be used as a single input channel strip, it can also process 2 independent audio signals; one through the mic preamp/compressor and the other through EQ/De-Esser/Limiter. The original design idea was intended for vocal processing. However, the VOXBOX also excels at processing drums, guitar, bass, and stereo mixes.

The VOXBOX incorporates many of Manley's technological innovations including the preamp from the Mono Mic Preamp, an electro-optical ELOP compressor, a Pultec-style mid-EQ, and a dedicated ELOP de-esser/limiter. The mic preamp features a hand-wound iron transformer with nickel laminations, negative feedback gain circuit, and triode vacuum tube circuit. The ELOP compressor is an electro-optical limiter with a fixed ratio of 3:1. The attack, release and threshold knobs adjust 4 different time constraints simultaneously resulting in "parametric compression," which allows for a broad spectrum of professional results for any vocal, instrument, or mix bus signal. While other manufacturer's designs have the compressor post mic pre, the VOXBOX places the circuit before the mic preamp making it near impossible to clip. This also shortens the signal path and ensures a quality, low noise signal.

The EQ section features Manley's Pultec-style Mid EQ, a 3-band EQ (low peak, mid dip, high peak) with an extended frequency range covering 20 Hz to 20 kHz. The de-esser/limiter features another ELOP circuit with 4 notch frequencies to tame sibilance and a 5th setting to provide a LA-2A style limiter. This design allows for compression of the signal pre-EQ and limiting post-EQ. Another useful feature is the silent bypass switches, which allow for the engaging and disengaging of any circuit during recording or playback without any audible artifacts. The large VU meters offer a 5-way toggle switch for monitoring the line input, preamp output, final output, compression gain reduction, and de-esser/limiter action. Handmade in the USA, the unit is housed in a 3U steel chassis with a CNC machined 1/4" faceplate that is also inlaid with laser engraved inserts. The VOXBOX ships with a standard IEC power cable.

2 Discrete Processors in One Unit Hand-Wound Nickel Transformers Hand-Selected Tubes ELOP Compression and Limiting Circuits Auto-Mute Warm Up Circuit Magnetic Field Containment Smart Grounding Stereo Link for Compressor and De-Esser Handmade in the USA

Parameters
Input / Output	1 x Mic Input: Balanced transformer coupled XLR at 2 kΩ 1 x Line Input: Balanced transformer coupled XLR at 3 kΩ 1 x Line Input: Balanced transformer coupled 1/4" TRS at 3 kΩ 1 x Insert Input (EQ Section): Balanced transformer coupled XLR at 3 kΩ 1 x Insert Input (EQ Section): Balanced transformer coupled 1/4" TRS at 3 kΩ 1 x Direct Input: Unbalanced 1/4" at 100 kΩ 1 x Preamp Output: Balanced transformer coupled XLR at 50 Ω 1 x EQ Output: Balanced transformer coupled XLR at 50 Ω 1 x Preamp Output: Unbalanced transformer-less 1/4" TRS (+4 dB) 1 x EQ Output: Unbalanced transformer-less 1/4" TRS (+4 dB) 1 x De-Esser stereo link via RCA jack 1 x Compressor stereo link via RCA jack
Compressor	Ratio: 3:1 Maximum Gain Reduction: 16 dB Attack Time: 4 to 70 ms Release Time: .3, .5, 1, 2, 5 Sec
EQ Section	Low Peak: 20, 35, 50, 70, 100, 150, 200, 300, 500, 700, 1000 Hz +10 dB Mid Dip: 200, 300, 500, 700, 1k, 1.5k, 2k, 3k, 4k, 5k, 7k Hz -10 dB High Peak: 1k, 2k, 3k, 4k, 5k, 6.4k, 8k, 10k, 12k, 16k, 20k Hz +10 dB
De-Esser & Limiter	Ratio: 10:1 Maximum Gain Reduction: 32 dB Attack Time: 2 ms Release Time: 500 ms De-Ess Notch Frequencies: 3, 6,9,12 kHz, none (Limit)
Tubes	Mic Preamp: 1 x 12AX7LPS and 1 x 6414 EQ Section: 1 x 5751 and 1 x 6414
Headroom	Headroom (Referenced to +4 dBv): 27 dB
Frequency Response (Audio)	Preamp: 20 Hz to 60 kHz ±1 dB EQ: 10 Hz to 100 kHz ±1 dB
THD & Noise	Mic Preamp THD & Noise (1kHz @ +20 dBm): 0.3% EQ THD & Noise (1kHz @ +20 dBm): 0.3% Both THD & Noise (1kHz @ +20 dBm): 0.35%
Noise Floor	Mic Preamp Noise Floor (Settings to Minimum): -86 dB EQ Noise Floor (Settings to Minimum): -89 dB Both (Settings to Minimum): -84 dB
Signal to Noise Ratio	Mic Preamp: 113 dB typical EQ: 116 dB typical Both: 110 dB typical
Maximum Input Level	Mic: +20 dB Line: +40 dB
Maximum Output	Maximum Output (1.5% THD): +31 dBv
Gain	Microphone Input: 60 dB Line Input: 20 dB Insert Input: 20 dB
Power	Power Supply: 200 mA @ 115 VAC Power Consumption: 24 W Mains Voltage Frequency: 60 Hz Fuse: Mains 120 VAC = 1 A Slo-Blo
Rackmountable	3U
Dimensions	19.0 x 5.3 x 10.0" / 48.3 x 13.3 x 25.4 cm
Weight	14.0 lb / 6.4 kg
Packaging Info
Package Weight	18.6 lb
Box Dimensions (LxWxH)	22.4 x 14.7 x 10.4"

Phantom 48 Volts: 48v power for microphones requiring phantom power

3-way Toggle Switch for High Pass Filter: Flat (bypassed), 80, and 120 Hz

3-way Toggle Switch for Phase Reverse and Line Selection: 0, line, and 180

1/4" 100 KΩ direct injection (DI) input for instruments

Mic Preamp Gain Switch: 40 to 60 dB of negative feedback gain

Input Level: Input attenuator or variable pad for mic, line, and DI

Manley ELOP circuit

Fixed 3:1 ratio

Continuously variable threshold control

5-way Selection Knobs for Attack and Release: Fast, med fast, medium, med slow, and slow

Compress 3:1 Bypass: Silent bypass allows for discretely engaging the compressor during playback or recording

Link: Selects stereo operation of a second VOXBOX

Pultec style mid-EQ with extended frequency range

Low Peak Frequency: 11 position knob - 20 to 1000 Hz

Low Peak Boost: 0 to +10 dB

Mid Dip Frequency: 11 position knob - 200 to 7000 Hz

Mid Dip: 0 to -10 dB

High Peak Frequency: 11 position knob - 1.5 to 20 kHz

High Peak Boost: 0 to +10 dB

EQ In Bypass: Silent bypass switch allows for discretely engaging the EQ during playback and recording

EQ Input: 3-way toggle switch for selecting line input, preamp output, and insert return

De-Ess Bypass: Silent switch for discretely engaging the de-esser during playback and recording

De-Ess Select: 5 position rotary switch for selecting de-essing frequencies

Limit: Setting removes frequency selection and works as an electro-optical limiter

Continuously variable threshold control

Full size illuminated Sifam VU Meter

5-Way Switch: Line input, preamp output, EQ output, compressor gain reduction, and de-esser/limiter action

Auto-Mute Warm Up Delay: 30 seconds

Hand-wound Manley iron input transformer

Silent conductive plastic input attenuator

Magnetic field containment

Smart-grounding

Related Questions and Answers

Q: 1. Are these speakers compatible with a desktop pc?

A: Yes, the Creative Labs Pebble Plus 2.1-Channel Desktop Speakers with Subwoofer BH #CRCPP21SSBK is compatible with a desktop PC.

Q: 2. Is this appliance voltage 220V?

A: The Manley Labs Slam tube stereo limiter and mic preamp is not 220V. It is rated for 120V use only.

Q: 3. Is this appliance voltage 220V

A: Yes. It runs anywhere between 100v and 240v.

Q: 4. excuse me my email is my question is i have a focusrite 14 and a program call samplitude prox 2 how do i connect them? and do i need it?, i need more gain and mor quality audio.

A: The TubeOpto8 is an 8 channel mic preamp. This unit features an optical ADAT digital output that carries all 8 channels. Unfortunately the Focusrite saffire Pro 14 does not have an ADAT input and would not be compatible.

Q: 5. Is the power requirements strictly US (i.e. 105-125V AC@60Hz)? If I ordered it will suit my power ratings in my country? (240V AC)

A: The units available here at B&H are designed to operate at 105 to 125 VAC/ 60 Hz only. Unfortunately we are not able to offer a 240 VAC unit.

Q: 6. How would you compare this one to the dbx 286s - Microphone Preamp/Channel Strip? I'm very new to channel strips, so any comments would help.

A: The DBX 286s is a great, straight forward, channel strip offering the essentials of a decent mic pre, compressor, de-esser, expander and gate. The Art Voice Tube Channel strip offers the same functions, but allows for more detailed control over the compressor and EQ. As well, the included tube and variable impedance knob will allow for more variety in tone shaping your signal. And this unit includes multiple outputs, including digital AES, optical, SPDIF, and USB.

Q: 7. Is it works with PreSonus studio one artist?

A: This version of the Waves Renaissance DeEsser includes the plug in in Audio Units and VST format. Both which are compatible with Studio One software.

Q: 8. Can this be used in place of a mic activator, such as a cloud lifter ?

A: Yes, you can use the TubeOpto instead of a Cloudlifer. The TubeOpto can be used with dynamic and condenser microphones while the Cloudlifter is specifically for use with dynamic mics. The Cloudlifer has a passive design that uses phantom power from the mic input you connecting to and can add up to 25 dB of clean gain. The TubeOpto does much more than just add clean gain since it is fully featured tube-based mic preamp. Its eight channels each have their own input and output gain controls which can add up to 70 dB of clean gain as well as additional features to shape the sound.

Q: 9. Would this work with the ShiftCam Pro Grip?

A: No, the Moondog Labs Smartphone Hood (XL) BH #MOSHXL would not be compatible with the ShiftCam Pro Grip.

Q: 10. What kind of cord do I need to connect the extension microphone to the Owl? One end of our cord got bent.

A: The Owl Labs Expansion Mic for Meeting Owl 3 BH #OWEMMO3 employs a micro-HDMI cable. SmallHD Micro-HDMI Cable (3') B&H # SMLHDMICRF36 - -Micro-HDMI to Micro-HDMI

Patrick	25/07/2024
This thing takes the EyeDirect and completely improves upon all of its shortcomings. First off, it's quick. It mounts right to your 15mm rails. 2nd, it's light. 3rd, it's simple design makes for easy setup and adjustments. As a bonus there's a iPad mount for zoom calls and prompting. Versatile Bit of kit. 5