HR78X
AM/FM Digital Tuner
With XLR Outputs
Rolls Corporation
Salt Lake City, UT
9/19
SPECIFICATIONS
FM
Intermediate Frequency:
10.7 MHz +/- 0.05
Tuning Range:
87.5 - 108 MHz
30 dB quieting sensitivity:
28 dB
IF Rejection 87.9 MHz:
50 - 56 dB
Image Rejection 105.9 MHz:
20 - 26 dB
3dB Limiting Sensitivity:
28 - 35 dB
THD 1 mV Input:
0.5 - 2 %
Auto Tuning Sensitivity 97.9 MHz:
25 - 30 dB
AM Suppression:
26 - 32 dB
AM
Intermediate Frequency:
450 kHz +/- 5
Tuning Range:
US:
530 - 1710 kHz
20 dB quieting sensitivity:
58 dB
IF Rejection 603 kHz:
25 - 32 dB
Image Rejection 1404 kHz:
32 - 38 dB
Auto Tuning Sensitivity 999 kHz:
28 - 35 dB
Max Output @ 1 kHz:
0.5V +/- 0.05V
Supply Voltage:
15 VDC Rolls PS27s
Dimensions:
6.75"w x 4.5"d x 1.75"h
Weight:
3.5 lbs
www.rolls.com
AM LOOP ANTENNA
- Connect the cord of the accessory AM loop antenna to the AM LOOP 300 Ohm terminals. When
tuning in AM stations, move the antenna to the left or right and set in the direction which yields
the optimum reception.
• Do not place the power cord or speaker cords near the loop antenna. Interference or noise may
be generated.
Multi path reflections
FM waves, like light waves, travel in a straight direction unless reflected off objects in their path.
Because of this, two sets of waves reach your antenna from the FM station; those that have
traveled directly to the antenna, and those that have been reflected off buildings or mountains.
When the antenna receives both kinds of signals, the two interfere with each other and result
in distorted sound and poor separation. This phenomenon is called "multi path reflection". To
reduce this problem, select an antenna with good directivity and place it in the best location
with strong reception.
QUICK START OPERATION GUIDE
