EDI SP1 Q-1 Quad 1800 watt dimmer for theater, home, DJ

Only THIRTY TWO quad channel units remaining!

Requires external DMX receiver, rack, or control module.

We received these EDI SP1 Q-1 quad 1800 watt incandescent dimmers
from a high school theater lighting upgrade. We test these before shipment and fully
guarantee them to operate. They are in quite clean used condition. 110 volt units are
fully DMX compatible. Each of the four independent incandescent lighting
only channels is rated as high as 1800 watts.

These are intended to directly plug into an older EDI mainframe. We were
told they fit the EDI Mark VII racks as well as newer blackface Scrimmer
racks.

But they are easily modified for your custom use as theater, home, DJ work,
rock  concert, church, club, or traveling shows. They are fairly easy to
computer or external DMX control. At a tiny faction of the usual price.

The quad unit measures 4 x 5-1/2 x 15 inchles deep. There are four
separate 15 amp breakers and four very high quality, high current
noise filter wound toroids. Main power control is by way of a
pair of dual solid state relays. Additional circuitry includes
LED input and output status indicators, an overtemperature
thermostat, and the input and output connectors.

Power connections are presently via six male bifurcated brass
3/8 inch diameter by 1 inch long pins. These are easily
substituted for most any reasonable higher current interface.

The low level input is via a stock eight pin Amphenol
connector. The six used pins input pulses for the phase
controls, a common positive supply, and output the overtemperature sensor.

Connections are as follows:

       Lower Left power pin -- 110 vac common input for channels 1 and 2
       Lower Right power pin -- 110 vac common  input for channels 3 and 4
       Lower Center power pin -- 110 vac output for channel 1
       Upper Center power pin -- 110 vac output for channel 2
       Upper Right power pin -- 110 vac output for channel 3
       Upper Left power pin -- 110 vac output for channel 4

       Input blue pin #1 -- ground to activate channel 1
       Input blue pin #2 -- ground to activate channel 2
       Input blue pin #3 -- ground to activate channel 3
       Input blue pin #4 -- ground to activate channel 4
       Input blue pin #5 -- No connection on SP1 Q1; Thermostatically protected +5 to + 12 vdc common input source on SP1 Q2
       Input blue pin #6 -- No connection on SP1 Q2 ; Thermostatically protected +5 to +12 vdc common input source on SP1 Q1
       Input blue pin #7 -- Thermostat safety trip output signal.
       Input blue pin #8 -- No connection

Operation is as follows: Grounding a channel input with a low level signal will activate that channel.
Holding the input grounded will turn the output lamp load on to full brightness. Delaying the input
signal synchronously after each 8.33 millisecond power line crossing will adjust the output lamp.
A low delay provides maximum brightness; a long delay provides minimum brightness.

A typical external DMX receiver or rack will provide these control signals automatically.
Each channel is directly plug-and-go compatible with a suitable DMX receiver.

You also do have the option of providing your
own control pulses from a personal computer, a BASIC
STAMP, a PIC Microprocessor, or a microcontroller.

The TTL level pulse is timed from each 8.33 millisecond
zero crossing of the ac power line. An early pulse provides
high brightness. A late pulse provides low brightness.
You can also provide continuous on-off remote control.

Input control voltage suply range is believed to be +5 to +12 VDC.
We are not absolutely sure that operation is guaranteed at +5 VDC.
The input equivalent circuit consists of a series resistor and two series  LED's,
one to indicate status and one inside the solid state triac controller.

Nine status LED's are included. A green for an input signal and a yellow
for 110 vac active. Their brightness will vary with the lamp brightness
settings. The ninth red LED is an overtemperature alarm tripped by
the internal thermal overload safety thermostat.

Unit includes a fancy heatsink. Cooling air should be
provided at very high power levels. Note also that there
is a minimum load value for proper operation, probably
around fifteen to twenty watts or so. Not intended for
fluorescent or motor loads. Possibly adaptable for
three phase use.

Please note again that an external DMX or custom pulse source
MUST be provided for these units to operate! Or, at the
very least, TTL level logic signals or open collector input for on-off control.

You can click here to reach the EDI website.
You can click here for a DMX Turorial.
You can click here for extensive DMX Support.

You can click here for details on DMX 8 Channel Receivers.
You can click here for a PIC DMX Ap Note.

Guaranteed usable. Fifteen day inspection privelege. Buyer to pay
all shippng. May include minor storage and shipping cosmetics.

On-off tested before shipping.

Also available: Similar packaged EDI 2X2 quad dimmers that
appear to be a slightly newer release and rated 2400 watts per channel.
You can tell us your preference, subject to remaining stock.

Your unit bit is for one quad 1800 watt per channel 110 volt
DMX compatible incandescent only dimmer module as described above..

We accept PayPal. No foreign bidders. US-only buyer to pay shipping charges
of thirteen pounds per module.. AZ residents add 8.1% sales tax.

Shipping may be combined on multiple or quantity orders.
Please email us for the lowest possible combined shipping quote.

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