Clare Controls amp.7150, User Manual

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4 amp.7150 User Guide
Installation – getting connected
Caution: All connections and switching must be done with the amplifier powered
off. Do not connect the power cord to the amplifier until your connections and set
up is complete.
Inputs
For line level connections, use high-quality RCA cables that feature low
impedance, shielding and high-quality connectors.
Speaker outputs
Use 14-18 gauge stranded two-conductor loudspeaker wire for all high level
connections. At each loudspeaker-level connection, ensure that at least 2 inches
of each conductor are separated. Strip away 1/4 inch of insulation from each
conductor. Connect the appropriate conductor to the speaker connection using
the terminal connectors, observing correct polarity.
Verifying phase
If during or after calibrating your receiver you suspect the sound is not right and
you cannot see any markings on the wire to verify that polarity is correct, try this
simple test:
1. Sit in the normal listening position for the system.
2. Play some music with your receiver set to Mono. Listen to the music and
observe the audio.
Does the bass sound full and even with the other audio?
Do the vocals sound centered and even in volume? If any of the answers are
NO, follow steps 3 and 4.
3. Turn off your receiver and reverse the connections for one of the speakers.
4. Repeat your test at the same volume level while reversing connections for
each speaker, one by one. When the sound has the loudest and best
sounding bass, and vocals are centered and clear, your connections are
correct and in-phase.