580 500 SERIES MICROPHONE PREAMPLIFIER OWNER’S MANUAL
580 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. This warranty is valid to the original purchaser only and is non-transferable. 3.
580 Table of Contents Overview �������������������������������������������������������������������������������� 2 Introduction ������������������������������������������������������������������������������������2 Features ������������������������������������������������������������������������������������������2 Installation ���������������������������������������������������������������������������� 3 The User Interface ��������������������������������������������������������������� 4 Technical Informat
580 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.
80 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). Therefore, it is recommended that you do not install the 580 into this slot and reserve it for line-level module use only. To install the 580 into a 500 series chassis: 1.
580 The User Interface 1. VU Meter This VU meter shows output signal level, with 0 indicating the optimal level (0 VU = +4 dBu). 1 2. 20dB Pad Button & LED 2 7 8 3 9 4 10 11 12 5 6 13 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. The pad is inserted before the signal is routed through the gain stage.
580 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. POLARITY INVERT Button & LED Engaging this button will invert the polarity of the microphone input signal. This button does not affect the INSTRUMENT input.
580 Technical Information Detail Filters – Frequency Response Plots High Detail +15 dB +18 +16 +14 +12 +10 +8 d B u +6 +4 +2 +0 -2 -4 -6 20 50 100 200 500 1k 2k 5k 10k 20k 1k 2k 5k 10k 20k Hz Low Detail +15 dB +18 +16 +14 +12 +10 +8 d B u +6 +4 +2 +0 -2 -4 -6 20 50 100 200 500 Hz 6
580 Mic Input Instrument Input Block Diagram +48V Amplifier 20dB Pad Polarity Invert Gain Control Mic/Instr Switch Amplifier Low Cut Peak LED Detail Circuit VU Meter Output 7
580 Specifications MIC PRE INPUT Type: Impedance: Maximum Input Level: Maximum Gain: CMRR: Electronically balanced/unbalanced, RF filtered 1.
580 PHYSICAL Rack System: Rack Space Dimensions (H x W x D) Weight: Shipping Weight: 500 Series Compatible Power-frame 1 Slot 5.25” x 1.5” x 6” (13.34 cm x 3.81 cm x 15.24 cm) 1.3 lbs (0.59 kg) 1.7 lbs (0.77 kg) Notes: Noise and frequency response specifications are at unity gain. 0 dBu=0.775V rms Specifications are subject to change without notice.
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Phone: (801) 566-8800 Website: dbxpro.com Support: dbxpro.
