User manual
QTA 6000 Series 
User Manual
User Manual
Q-Tech Commercial Series
QTA 6060M/6120M/6250M 
10
Connections
Speaker Connections
70V LINE
70V 100V
COM
4
(QTA 6120M)
40.8
4
70V 100V
COM
4
100V LINE
83
70V 100V
COM
4
(QTA 6120M)
Notes:
• Both the 4Ω 70V/100V terminals cannot be used at the same time
• Impedances indicated in the figures represent the total speaker system (load) impedances
WARNING
Be sure to attach the supplied terminal cover after connection completion. Because 
high voltage is applied to the speaker terminals, never touch these terminals to 
avoid electric shocks.
Wiring The Vcc-10k Vca Potentiom-
eter
Quest part number, VCC-10K, consists of a single 
gang wall plate with a pre- mounted 10K poten-
tiometer and knob. This pot may be mounted on 
a plate to match the wall plates as nominated by 
the Architect. Use two conductor unshielded wire 
connecting the pot terminals to the terminals 
marked “VCA” on the back of the amp.
Security Covers Option
In order to prevent unauthorized operation of 
the 60w/120w/250w Mixer amplifiers, optional 
security covers are available which take the 
place of the front panel knobs. 
After the 60w/120w 250w Mixer amp has been 
installed and is operating as desired, grasp the 
front panel knobs and pull straight out from the 
front panel. Replace the knobs with security 
covers, Quest part number VCC-5 available in 
quantities of 5.
 To VCA Terminals










