10
amplifiers or recording devices, they can rob power and cause distortion while
adding little, if anything, to sound quality.
The High Cut’s range is 3KHz to 40 KHz. Roll off beyond the cutoff point is at 12 dB
per octave.
8. LEVEL CONTROL
Adjusts the overall output volume. The combined effect of the EQ Frequency
sliders typically results in an increase or decrease of overall output level. The
Level Control can compensate for this change in level. Compare the level of the
equalized signal with that of the unequalized signal (bypass button in), and use
the Level Control to eliminate any difference in levels.
9. LEVEL METERS (Q-2152V, Q-1312V)
Each channel of the EQ is equipped with a backlit VU meter. The meter is
calibrated for “0” level equal to +4 dBu output.
Rear Panel
10. POWER CABLE
This cable is used to connect to an AC power source. For North American models,
this source shall be 115 115VAC; for export models, the source shall be 230VAC.
11. FUSE HOLDER
This holder contains the AC primary fuse. If the fuse has blown, replace with the
same size and rating. If the fuse continues to blow, refer servicing to qualified
technical personnel.
12. AC VOLTAGE SELECTOR
Set this switch to match the AC line voltage in your area.
13. GROUND LIFT SWITCH
In many installations, hum-causing ground loops are formed by the common
connection of various pieces of equipment to the power line ground, and by
contact between chassis, as in a rack with metal rails. Sliding the Ground Lift
switch up completely isolates all signal grounds from the chassis, breaking any
ground loops. The chassis always remains connected to the ground pin on the
AC cord for safety and to shield against RF interference. Try both positions of the
Ground Lift switch, and leave the switch in the position that results in the least
hum in your system.
Note:
The ground lift can be rendered ineffective by 3 pin audio connectors that
tie pin 1 (signal ground) to the metal shell is optional on all 3 pin connectors, and
can be removed, if present, by opening up the connector on the cable and
disconnecting it.
Содержание Q-1311
Страница 1: ...1...