MACROM 42.17 User Manual

MACROM     INGLESE     42.15 - 42.17     17 FEBBRAIO 1993 11

11

 a) STEREO  MODE. Select the "ST" (mid) position when the

amplifier is used as a 2-channel stereo system.

Note:Even in this case the connection is possible L + R -.

  b) LEFT MODE "L - MONO". Select the "L - Mono" position when

the amplifier is used for only one channel of the stereo system
or for one bridged channel.

Note: Connect the leads coming from one speaker to the

terminals (L+ R-) in order to obtain a BTL-connection. In case
stereo output is requested, connect a second 42.15 / 42.17 in
the same way to the other speaker.

In the mid position an input sensitivity of 500 mV is selected
corresponding to the preamplified outputs of MACROM products.

If the amplifier is to be connected to a head unit that is not of
MACROM make but is fitted with preamplified RCA outputs
proceed as follows:

  a) Adjust the volume control of your head unit to 3/4 of a turn from

the maximum output level.

 b) Turn the input control by means of a screwdriver and adjust

the input gain from 0.1 V to 2 V to the maximum sound level
where no distortion occurs.

 c) L + R MODE. Select the "L+R" position when the amplifier is

used for a subwoofer system using the right and left channels.
Thus, the two inputs are blended into one mono output signal
divided between 2 channels or, one double power channel if
the Sub Woofer is connected to the central channel L + R .

L (MONO)        ST           L+R

L (MONO)        ST           L+R

L (MONO)        ST           L+R