Input Impedance ; Power Requirements:; Volume Control:- Page 53

C I N E M A



SPECIFICATIONS

Performance

Input Impedance 

(processor inputs): 10 kilohms.

Input Impedance (Processor Inputs):

 10 k 

ohms.

Input Impedance (Power Amplifiers Inputs):

> 50 k ohms.

Power Requirements:

  100-240V    , 50-60 

Hz, 32 watts.

Front Panel Controls and Indicators

Channel Select Buttons and LEDs:

 Eight  

pushbutton switches, one for each input 

channel. Pressing a button monitors the 

signal from that channel, and lights the cor-

responding LED. Any combination of eight 

channels can be selected.

Volume Control:

 Rotary potentiometer with 

knob controls the volume of the internal or 

external speaker. Has no effect on the VU 

Bargraph Meter display.

Processor/Amplifier Selector Switch and 

LEDs:

 Pushbutton switch with corresponding 

LEDs selects inputs from cinema procesor or 

power amplfiers for monitoring.

VU Bargraph Meter:

 12-segment meter 

displays input level of selected channels from 

–40 VU to +3 VU. May be calibrated by the 

rear-panel trim adjustment. Operates inde-

pendently of the Volume Control.

Test Jack: 

1/4" phone jack lets the user moni-

tor the audio output of the DSi-8M. Insert-

ing a mono or stereo 1/4" phone plug here 

disables the internal speaker and routes the 

audio output to the Test Jack.

Internal Speaker: 

For convenenient monitor-

ing at the monitor panel.

Power Switch and Power LED:

 Rocker switch 

turns power on or off. LED illuminates when 

power is on.

Rear Panel Controls and Connectors

IEC AC Power Receptacle:

 Connects to an 

IEC AC power cord.

Input Connector 1:

 10-pin Phoenix terminal 

block connects to the power amplifier speaker 

outputs for the Left Surround, Right Sur-

round, Back Surround Left, Back Surround 

Right and Subwoofer channels. This connec-

tor lets you monitor the output of amplifiers 

that do not include HD-15 connector options.

Input Connector 2: 

10-pin Phoenix terminal 

block connects to the power amplifier speaker 

output for the Left High, Left Low, Center 

High, Center Low, Right High and Right Low 

channels. This connector lets you monitor the 

output of amplifiers that do not include HD-15 

connector options.

Amplifier Level Control:

 Trimpot adjusts 

the level of the input signals from the power 

amplifiers.

Processor Level:

 Trimpot adjusts the level of 

the input signals from the processor.

Outputs to Power Amplifier Inputs: 

The six 

HD-15 connectors in this section connect 

to DSi amplifiers for both input and output 

signals. The HD-15 connectors have two 

functions:
1. Connect DSi 8M outputs to DSi amplifier 

inputs.
2. Connect DSi amplifier outputs to DSi 8M 

inputs for monitoring.
Using VGA cables, the HD-15 connectors can 

be connected to Crown DSi power amplifier 

HD-15 connectors as described below.

HD-15 Connector 1:

 For cinema I/O compat-

ibility. Connects to Ls/Rs amplifier.

HD-15 Connector 2:

  Connects to Bsl/Bsr 

amplifier.

HD-15 Connector 3:

  Connects to Rl/Rh 

amplifier.

HD-15 Connector 4:

  Connects to Sw ampli-

fier.

HD-15 Connector 5:

  Connects to Ll/Lh 

amplifier.

HD-15 Connector 6:

  Connects to Cl/Ch 

amplifier.

Optional Input Connector:

 25-pin D-sub 

connector connects to the EX output of the 

processor.

Bargraph Level:

 Trimpot adjusts the sensitiv-

ity of the front-panel VU Bargraph Meter.

Main Input Connector:

 25-pin D-sub con-

nector connects to the main outputs of the 

processor.

“EX” Selector Switch:

 8-position DIP switch. 

Turn on switches 1-4 if system is without EX. 

Turn on switches 5-8 if system is with EX. 

This routes the correct Ls/Rs inputs to the 

DSi-8M circuitry.

Construction

Chassis:

 Steel.

Dimensions:

 EIA Standard 19-inch rack 

mount width (EIA RS-310-B), 3.5 inches (8.9 

cm) high and 9.625 inches (24.4 cm) deep 

behind front mounting surface.

Net Weight

:

10 lb 2 oz (4.63 kg).

Shipping Weight:

16 lb (7.26 kg). 

Regulatory Certifications

T

he Crown

®

 DSi-8M is a projection booth monitor designed to work with bi-amplified cinema 

systems using the Crown DSi Series amplifiers. All controls necessary for daily operation of 

the DSi-8M are easily accessible on the front panel. 8-channel monitoring allows you to moni-

tor either the processor or the power amplifier’s outputs: L, C, R, Ls, Rs, Bsl, Bsr, and Sub in 

any combination. Input levels from the processor and power amplifier can be adjusted indepen-

dently. There are no huge level jumps when switching between processor and power amplifiers. 

The bargraph display can be calibrated to the reference level for your theater. The projectionist 

can see auditorium levels instantly.

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