3
Amplifiers & Preamplifiers
AV61
INSTALLATION NOTES
1. Use high quality low-loss cables for all A/V connections. For runs in excess of 10 feet, use low-loss
RG-6 coax. Runs in excess of 50 feet are not recommended.
2. AV-61 Distribution Amplifiers, used in zoned systems, prevent loading mismatch on the source
components & audio distortion on music peaks when some zones are turned off while one or more are
still on. You need one AV-61 for each source, as shown in
Fig. 3
.
3. The distribution amps should have their AC power switched on and off along with the common source
components in zoned systems. Refer to the Xantech model 680 AC Switcher instructions for details.
4. The A/V Receivers also need AC power management. Refer to the 680 instructions for details.
5.
Fig. 3
assumes the use of A/V Receivers having base-band video switching capabilities.
SPECIFICATIONS
AUDIO
Gain:
Unity
Input Overload:
3.0 V RMS
Input Impedance:
> 20k Ohms (ea. input)
Output Impedance:
< 100 Ohms
THD:
0.06% at 1.0 V input level
Freq. Response:
10-45 kHz +/- 1 dB
Channel Separation:
> 75 dB @ 1 kHz
IN-OUT Isolation:
> 60 dB
OUT-OUT Isolation:
> 60 dB
Signal to Noise:
100 dB (re 2V out)
VIDEO
Gain:
Unity
Input Impedance:
75 Ohms
Output Impedance:
< 3 Ohms
Video Insertion Loss:
50 Hz - 10 mHz < 1 dB
IN-OUT Isolation:
50 Hz - 10 mHz > 25 dB
OUT-IN Isolation:
50 Hz - 10 mHz > 55 dB
Return Loss:
50 Hz - 10 mHz > 20 dB
GENERAL
A/V input/outputs:
RCA-type phono jacks
Power Requirements:
16V DC @ 300 mA
(Power Supply included)
Power jack:
2.1 mm coaxial type
Dimensions:
10" W x 2 3/4" D x 1 1/4" H
9-20-00
