Xantech 760-00 - Manual
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Table of Contents:
- Page 2 – SETTING THE IMPEDANCE MATCHING JUMPERS; and the charts and procedures that follow.; Jumper Placement For Impedance Matching; . Their proper placement
- Page 4 – Impedance Setting Tips
- Page 5 – Speakers & Volume Controls; A Typical 3-Room System; INSTALLATION; As shown in; MATCH MAKER; ROOM 1
- Page 6 – alignment of the 760.; THE ELECTRICAL JUNCTION BOX, IN WHICH THE 760-00 IS MOUNTED, MUST BE; 60 Mounting Details
1
Speakers & Volume Controls
INSTALLATION INSTRUCTIONS
760-00
MATCH MAKER™ SPEAKER VOLUME CONTROL
The Model 760-00 is an in-wall mountable stereo speaker volume control with impedance matching
capability. From one to sixteen pairs of stereo speakers may be driven from one stereo power amplifier,
using an equal number of 760's. It maintains correct impedance matching between the amplifier and the
speakers by the use of instant setting S1, S4 and S8 jumpers on the control. This eliminates the need for
separate impedance matching components in multi-room installations.
L+ L– R– R+
L+ L– R– R+
IN
PU
T
O U T P U T
760-00
SPEAKER VOLUME
CONTROL
SYLMAR,
CA
®
SPECIFICATIONS:
Type:
2 channel TRI-FI™ wound precision autoformers, with independent grounds.
Terminals:
Eight 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 position 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:
Will not fit certain retro-fit boxes, such as the Carlon 14 and 25 cu. inch series. Be
sure to check fit before choosing J-boxes!
Dimensions:
1-5/8" W x 2-7/8" H x 2-5/16" D
Fig. 1
The 760-00
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Summary
2 760-00 SETTING THE IMPEDANCE MATCHING JUMPERS Fig. 2 shows the location of the pins and the jumper locations on the pins for the three impedance multiplierpositions. To set the jumpers correctly, refer to Fig. 2 and the charts and procedures that follow. WHEN USING 8 OHM SPEAKERS WHEN USING 4 OH...
4 5. Next, calculate the overall paralleled impedance with the following formulae: Z O = 1 ÷ [(1 ÷ Z 1 ) + (1 ÷ Z 2 ) + (1 ÷ Z N ...etc.)] Z O = overall paralleled impedance Z 1 = 1st paralleled group after S setting Z 2 = 2nd paralleled group after S setting Z N = additional paralleled groups, wh...
5 Speakers & Volume Controls Fig. 3. A Typical 3-Room System INSTALLATION As shown in Fig. 3 , 4-conductor speaker wire (two wires for each channel) is connected from each of the 760's to the power amplifier (home run from each room). Also, each channel (left and right) requires a pairof wires...
