Harman Kardon CA 240 Owner's Manual page 8

Speaker Systems
For a conventional stereo system with one or two speaker
systems per channel, connect the speaker systems to these
terminals. Be careful to connect the positive speaker termi¬
nals to the positive CA240 terminals. Do not connect the
negative speaker terminals to the car chassis.
When one pair of speakers is used, each one may have an
impedance in the range of 2 — 8 Ohms and a power rating
of at least 40 watts. If two pairs of speakers are used, each
one may have an impedance in the range of 4 — 8 Ohms
and a power rating of at least 40 watts.
Input Jacks
These input jacks are for connection to the line (preamplifi¬
er) output jacks on the car stereo or tuner/deck. It is recom¬
mended that high quality shielded coaxial cables with
tight-fitting RCA plugs be used for this connection.
If the car stereo has a built-in power amplifier and does not
have line (preamplifier) output jacks, connect the speaker
wires to these input jacks. Male phono plugs (not provid¬
ed) are required.
7
Input Sensitivity Control
This control matches the input sensitivity of the CA240 to
the output level of the car stereo or tuner/deck.
Set this control in the low (counterclockwise) range when
the car stereo speaker wires are connected to the input
jacks. Use a higher setting when connecting tuner/deck line
(preamplifier) output jacks to the CA240 input jacks.