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500 SERIES MICROPHONE PREAMPLIFIER OWNER’S MANUAL...
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Warranty 1. Please register your product online at www.dbxpro.com. Proof-of-purchase is considered to be the responsibility of the consumer. A copy of the original purchase receipt must be provided for any warranty service. 2. dbx warrants this product, when purchased new from an authorized U.S. dbx dealer and used solely within the U.S., to be free from defects in materials and workmanship under normal use and service.
Overview Introduction The 580 is a 500 series compliant microphone preamplifier with dedicated front-panel instrument input, making it well suited for microphone or direct instrument recording applications. A MIC/INSTR switch allows for switching between the microphone or front-panel instrument input jack. A 20dB pad switch can be engaged to attenuate the 580’s input for accepting high-output signal levels from “hot”...
Installation FOR 500 SERIES CHASSIS MOUNT USE ONLY! IMPORTANT NOTE: Many 500 series chassis have the potential to cause noise when preamplifiers are mounted in the slot closest to the power supply. This noise is exacerbated with preamplifiers due to the large amount of gain which they apply (typically 48 dB or more).
The User Interface 1. VU Meter This VU meter shows output signal level, with 0 indicating the optimal level (0 VU = +4 dBu). 2. 20dB Pad Button & LED When this button is engaged, the LED will light and a 20 dB attenuation circuit will be inserted into the signal path post the microphone input.
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9. LOW CUT Button Engages the low cut circuit and enables the variable LOW CUT control. 10. LOW CUT Control When the LOW CUT button is engaged, this control sets the frequency below which frequencies will be attenuated using a 12 dB/octave Bessel filter. 11.
Specifications MIC PRE INPUT Type: Electronically balanced/unbalanced, RF filtered Impedance: 1.7 kΩ Maximum Input Level: +15 dBu balanced or unbalanced (20dB PAD disabled) +35 dBu balanced or unbalanced (20dB PAD enabled) Maximum Gain: 60 dB CMRR: >60 dB; typically >70 dB from 20 Hz – 20 kHz INSTRUMENT INPUT (FRONT PANEL) Connector: Tip-Sleeve ¼”...
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PHYSICAL Rack System: 500 Series Compatible Power-frame Rack Space 1 Slot Dimensions (H x W x D) 5.25” x 1.5” x 6” (13.34 cm x 3.81 cm x 15.24 cm) Weight: 1.3 lbs (0.59 kg) Shipping Weight: 1.7 lbs (0.77 kg) Notes: Noise and frequency response specifications are at unity gain.
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