Doug Fleenor Designs DMX12DIM-ELV
12 Channel 100W Rack Mount Dimmer - Reverse Phase


The DMX12DIM-ELV from Doug Fleenor Design is a 12 channel, 100 Watt per channel dimmer pack that is fed by a single 120VAC 15A branch circuit.
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Doug Fleenor Designs DMX12DIM-ELV
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The DMX12DIM-ELV from Doug Fleenor Design is a 12 channel, 100 Watt per channel dimmer pack that is fed by a single 120VAC 15A branch circuit. Each of the dimmers can be separately controlled using a DMX512-based lighting controller. The dimmers use MOSFET power devices and the dimmed outputs are Electronic Low Voltage (ELV) compatible using reverse phase (aka: trailing edge) control techniques.  The DMX12DIM-ELV is housed in an enclosure suitable for portable use or for mounting in a standard 19" rack.  The DMX12DIM-ELV occupies 1U of rack space and provides grounded parallel blade output connectors. 


  • Safety warnings:
    • For indoor use only
    • There are no user serviceable parts in the DMX12DIM ELV. Servicing should be referred to qualified service personnel
    • Do NOT connect or disconnect loads to the DMX12DIM-ELV with the power on

Doug Fleenor DMX12DIM-ELV Specifications:

  • Input circuit: Protected EIA-485 receiver (LT1785)
  • Input protection: Undamaged by up to 60 Volts continuous, 15KV transients
  • Input signal: 0.2 volts minimum, 12 volts maximum, DMX512, DMX512/1990, or DMX512-A
  • Input connector: Gold plated 5 pin male XLR (NeutrikD-1 series) 3 pin XLR optional
  • Input pass through: Gold plated 5 pin female XLR (Neutrik D-1 series). All five pins are passed through
  • Termination: None. Unused pass through connectors mustbe externally terminated
  • Power input: 120 VAC 60 Hz 10 Amps at full load. Actual current draw is 0.07A plus connected load
  • Power input connector: NEMA 5-15P (15A U-ground) on 18" 12 gauge pigtail
  • Idle power: 7 Watts
  • Power output: 120 VAC 60 Hz 0.83 Amps (100W) maximum per output
  • Minimum load: No minimum load requirement
  • Output protection: 1.5A internal fuse on each output channel
  • Output connectors: NEMA 5-15R (15A grounded parallel blade)
  • Dimming circuit: Digitally fired, opto-isolated, MOSFET power devices. These components allow for forward or reverse phase dimmer control
  • Rise/fall time: 2 uS (10% to 90% at 90° firing angle) at rated load
  • Dimming curve: Square law. Visually appealing on LED lamps (120V), halogen lamps, magnetic low-voltage (MLV) and electronic low-voltage (ELV)
  • Non-dim curve: Each channel can be configured as a non-dim which turns on at 60%, off at 40%
  • Outputs switch on at zero crossing. Other non-dim trip point options include 50% and 1% (globally settable)
  • DMX footprint: Twelve consecutive DMX slots beginning with the selected DMX starting address
  • DMX starting address: Three digit front panel thumbwheel switch. Address changes are immediate (no power cycling required)
  • Local control: An “address switch” setting of 601 turns on output 1, 602 turns on output 2, etc. Setting 699 turns on all outputs. Setting 698 turns on all outputs when DMX is present. Setting 697 turns on all outputs if any DMX level is above zero
  • Status indicators:
    • Red POWER indicator
    • Green MIMIC 1 indicator mimics the intensity of output 1 (useful in troubleshooting)
    • Green SIGNAL indicator illuminates when DMX512 is present; flashes when local control is active (address switch settings of 601 thru 624 and 697 thru 699)
  • Cooling: Processor controlled low speed fan exchanges internal air from front to side
  • Isolation: DMX512 input is optically isolated from AC power circuits to 600 Volts
  • Color: Silver hammer tone with black front and rear panels
  • Safety listing: Pending ETL Listing to UL 508
  • Size and weight: 1.7" high x 10.5" deep x 19" wide (17" behind rack ears), 7 pounds. Rack ears are included
  • Environmental Operating temperature: 32° - 104°F (0° -40ºC)
  • Operating humidity: 10 - 90% non-condensing
  • Warranty: Five years parts and labor. Dimmer must be returned to Doug Fleenor Design for warranty repair. Shipping to Doug Fleenor Design is to be paid by the customer. Return ground freight is paid by Doug Fleenor Design.Warranty covers manufacturing defects

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