7
left speaker
right speaker
right channel amplifier
left channel amplifier
Bi-Amplifying
Using One Amplifier for the Bass and One for the High End
Unscrew both sets
of terminals and
remove the jumper
straps.
Connect the cables
from the bottom
set of terminals to
the amplifier
driving the bass
unit.
Connect the cables
from the top set of
terminals to the
amplifier driving
the tweeters.
When making
connections, be sure to c to + (red) and – to – (black).
Do not use an external crossover. It will interact with the phase and frequency response of
the QBx 25.
LISTENING LEVELS AND POWER HANDLING
The power recommendation for the system assumes you will operate the amplifier in a way
that will not produce distortion. All speakers can be damaged by even a modest amplifier
if it is producing distortion. If you hear a gritty noise or other signs of strain, turn down
the volume. Prolonged or repeated operation of your speakers with a distorted signal can
cause damage that is not covered by the warranty. It is especially important that you do
not overdrive the bass capability of smaller speakers. Watch for noises, such as pops,
caused by the music’s bass line. Use of the loudness control and/or full bass boost at
louder volumes is likely to overdrive the woofer. Use such controls sparingly.
