Xantech VCIR-CFL Install Manual
INSTALLATION INSTRUCTIONS
VCIR-CFL
™
MATCH MAKER™ SPEAKER VOLUME CONTROL
WITH IR RECEIVER
The Model VCIR-CFL is an impedance matching stereo speaker volume control combined
with a "CFL Friendly" IR Receiver. It mounts in
a single gang J-box. The volume control section has the same impedance matching capabilities as that of the Xantech Model 760-00
Match Maker volume control. The IR Receiver
section has similar performance to that of the
480-80 CFL Dinky Link IR Receiver with the
4-Conductor 18" Ribbon
Cable for IR Receiver.
OUTPUT
L+ L– R– R+
VCIR
™
SPEAKER VOLUME CONTROL
WITH IR RECEIVER
®
SYLMAR, CA
Dual LED
Red-Talkback
Green-Status
added feature of a STATUS LED for system
ON/OFF indication.
CAUTION:
The VCIR-CFL is designed to
control products that operate with 36 to 42
kHz IR Carriers only!
NOTE: The volume control section of the
VCIR-CFL is manually controlled only.
The IR
INPUT
IR Receiver
Stereo Volume Control
Section (auto-former)
Section
Fig. 1 The VCIR-CFL
L+ L– R– R+
IR Receiver
Photo Diode
Receiver section is for control of other system components -- it cannot control the volume control
section!
SPECIFICATIONS – VOLUME CONTROL SECTION
• Type: 2 channel TRI-FI™ wound precision autoformers, with independent gnds.
• Terminals: Plug-in type screw terminals.
• Power Rating: 25 Watts continuous, 150 Watts peak.
• Freq. Response: 20-20,000 Hz ± 1dB at 1 watt.
• Attenuation: 11 steps at 3 to 6 dB per step - 35 dB max. (Max. CCW is OFF).
S1 setting: 0 dB @ Max. CW (pass-through position).
S4 setting: 9 dB @ Max. CW.
S8 setting: 13 dB @ Max. CW.
• Impedance:
S1 setting: Pass-through position. i.e. 8 Ohms on OUTPUT reflects 8 Ohms to INPUT (Max.
CW position).
S4 setting: 8 Ohms on OUTPUT reflects 32 Ohms to INPUT . Likewise, 4 Ohms on OUTPUT reflects 16
Ohms to INPUT (Max. CW position).
S8 setting: 8 Ohms on OUTPUT reflects 64 Ohms to INPUT. Likewise, 4 Ohms on OUTPUT reflects 32
Ohms to INPUT (Max. CW position).
• Mounting: Fits most new construction junction boxes - uses single space.
NOTE: It may be necessary to cut off the back portion of a J-box or use a "P" ring to have sufficient room.
Be sure to check fit before choosing J-boxes!
• Dimensions: 1-5/8" (41.3mm) W x 2-7/8" (73mm) H x 2-7/16" (62mm) D
Speakers & Volume Controls
VCIR-CFL
1
SPECIFICATIONS – IR RECEIVER SECTION
• Infrared carrier frequency bandwidth: 36 kHz to 42 kHz.
• IR reception range: Up to 60 feet on axis (range may be more or less depending on device being
controlled and levels of IR or EM interference).
• Reception angle: Approx. 50% range reduction @ ±45° off axis horizontally.
• Cable requirements: When running long lengths use:
4-conductor/24 gauge solid or stranded wire up to 200', 22 gauge up to 600', 20 gauge up to 2000' and
18 gauge up to 5000' (unshielded OK).
• Maximum cable length: One mile with 18 gauge.
• 4-Terminal Block (with double sided tape for mounting) included for easy extension of 18" ribbon lead.
See Fig. 6 for lead identifications.
• Red talkback LED: Tests system for correct wiring and indicates IR reception.
• Green system ON/OFF status LED: (draws 10 mA @ 12 VDC).
• SUN780 Sunscreen filters available separately. Order these to help with sunlight and stray IR problems.
They fit easily over rear of photodiode opening.
• IR receiver works in normal 3-wire mode with 4th lead for Status.
• NOTE:
Unit will not work in Phantom mode!
• Use Xantech Connecting Blocks for connection to emitters.
• Power requirements: 12 Volts DC ± 2 V @ 20 mA.
• Up to 10 VCIR-CFL's may be powered by one 781RG power supply.
SETTING THE IMPEDANCE MATCHING JUMPERS
Fig. 2 shows the location of the pins and the jumper locations on the pins for the three impedance multiplier
positions. To set the jumpers correctly, refer to Fig. 2 and the charts and procedures that follow.
The jumpers are located under the one side of the autoformers as shown in Fig.2. Their proper placement
depends on the number of VCIR's and speakers used in the total installation. To set them for the best
impedance matching condition, refer to the charts and procedures that follow.
Left Channel Jumper
Left Channel Jumper Positions
S8
S8
Right Channel Jumper Positions
S4 S1
S4 S1
S8S4S1
S8S4S1
Right Channel Jumper
OUTPUT
L+ L– R– R+
VCIR
™
SPEAKER VOLUME CONTROL
WITH IR RECEIVER
®
SYLMAR, CA
L+ L– R– R+
INPUT
Fig. 2 Jumper Placement For Impedance Matching
2
VCIR-CFL
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