ProCo Sound IGATE Audio Gateway

The Pro Co iGate Audio Gateway is a device that provides simple and reliable connection of three different audio sources to the balanced microphone inputs of audio mixing consoles. It serves as a mic input, a direct box and an MP3 player interface all together in a conveniently packaged single rack-space unit. The iGate provides a pass-through input for a balanced microphone, inputs for the stereo headphone output of audio devices such as MP3 players, Apple iPods, laptop computers and consumer-type CD and DVD players, and an input for unbalanced "instrument" signal sources.

MIC IN input is wired directly to MIC OUT on the rear panel for a convenient microphone pass-through. The INSTRUMENT input accepts unbalanced instrument or other signal sources and, through the use of the Pro Co DBT-P direct box transformer, provides a floating transformer-balanced output through the INSTRUMENT OUT on the rear panel. The iGate provides both a stereo mini COMPUTER/iPOD input and left/right RCA phono LINE LEVEL INPUT inputs for easy connection of MP3 or computer audio outputs with standard patch cables. A STEREO/MONO switch provides passive input summing to a dual mono output feed where required. The inputs may be used simultaneously. If only a single source is used, the second set of inputs may be used to derive an unbalanced mono feed for recording purposes.

All outputs (except MIC OUT) are transformer-isolated via the Pro Co audiophile-grade transformers. The transformers offer wide bandwidth, low distortion and phase shift. They are magnetically shielded in mu-metal cans and

electrostatically isolated with dual Faraday shields. The result is near-ideal rejection of common-mode signals from all sources of RFI and EMI, including radio pickup, SCR dimmers and 60 Hz hum.

The GND/LIFT switch allows correct grounding for either AC or battery-powered sources, eliminating hum and buzz from ground loops between portable and house equipment. The GND/LIFT switch affects the COMPUTER/iPOD and LINE LEVEL IN L/R inputs only

The iGate's rugged 16-gauge steel and aluminum "Uni-box" construction enclosure is finished in a durable black texture powder coat finish with black anodized aluminum side channels. All functions are clearly identified by laser-engraved legends, providing an attractive and professional appearance in addition to trouble-free technical functionality. The iGate can be mounted in any standard 19" (482.6mm) rack. Top quality connectors and switches provide trouble-free service even in abusive situations such as remote broadcast and recording operations.

Features:

• Convenient connection point for MP3 players and laptop computers, instrument-level sources and a mic input to house sound systems
• Floating transformer-balanced XLR output for instrument and line-level inputs
• XLR input for mic pass-thru
• Single rack space
• Ideal for installation in meeting rooms, churches, clubs, theaters, and one-man-band portable applications

Specifications:

• INSTRUMENT CHANNEL
• All measurements made with a 20 kO source feeding IN/OUT and 1.0 kO load on LO-Z OUTPUT to simulate typical "real world" instrument pick up and mic preamp. 0 dBv ref. = .775 volt.
• Frequency Repsonse:
• 20 Hz - 20 kHz, +/- 0.5 dB @ -15 dBv output.
• -3 dB @ approximately 85 kHz
• Total Harmonic Distortion:
• < .03% 20 Hz - 20 kHz @ -30 dBv output.
• < 0.1% 30 Hz - 20 kHz @ -15 dBv output.
• < .25% 20 Hz - 20 kHz @ -15 dBv output.
• Phase Response: < -18 degrees @ 20 kHz (ref. 1.0 kHz).
• Rise Time: < 4.5 microseconds (2.0 kHz square wave, 10% - 90%).
• Voltage Stepdown: < 22 dB @ 1.0 kHz
• Input Impedance:
• > 130 k Ohms @ 1.0 kHz (INST mode).
• >105 k Ohms @ 10 kHz (INST mode).
• Nominal source impedance is 20 k Ohms.
• Output Impedance:
• < 200 Ohms @ 1.0 kHz.
• < 215 Ohms @ 10 kHz.
• Maximum Input Level @ 50 Hz for 1% THD:
• +16 dBv @ 20 Hz.
• +21 dBv @ 30 Hz.
• +26 dBv @ 50 Hz.
  
  
• COMPUTER/iPOD INPUT CHANNEL
• Frequency Repsonse (Re: 1.0 kHz):
• +0.2 dB @ 20 Hz
• -0.6 dB @ 20 kHz
• -0.4 dB @ 65 kHz
• Total Harmonic Distortion: < 0.1% 30 Hz - 20 kHz @ -15 dBv output
• Voltage Loss (@ 1.0 kHz): 1.0 dB
• Input Impedance: 150 k Ohms.
• Secondary Source Impedance: 270 Ohms @ 1.0 KHZ.
• Insulation: 600 V winding/shield/winding