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PO BOX 7231, COLORADO SPRINGS, COLORADO 80933 USA E-mAIL: jRDG@jEffROwLAND.COm www.jEffROwLAND.COm TELEPHONE (719) 473-1181
RISK OF ELECTRICAL SHOCK!
WARNING: The instructions in this section are
meant for qualied JRDG service per sonnel
only; however, if you as an end user choose to attempt
these adjustments yourself, JRDG cannot be held
liable for any damage that may occur to your Model
312 Stereo Amplier because of your actions. Further,
accessing the interior of your Model 312 by removing
the bottom cover can expose you to dangerous, poten-
tially lethal
electrical voltages. Thus, JRDG cannot be
held liable for any injury you may sustain
should you
undertake any of these adjustments yourself.
OVERALL GAIN ADjUSTMENT
By removing the top cover the overall gain of the Model 312 Stereo Power
Amplifier can be adjusted to either 26 dB or 32 dB via jumpers located on
the rear panel circuit board inside the amplifier. The default setting from the
factory is 26 dB, which is adequate for the majority of applications. There is
no sonic difference between the two settings.
Because of the potentially dangerous voltages inside of the chassis, it is recommended
that you contact your dealer for information regarding the overall gain setting adjustments.
NOTE: Do not attempt to remove the top cover to adjust the overall gain without explicit instruc-
tions from your dealer or JRDG.
optional adjustments
OWNER’S MANUAL MODEL 312 STEREO AMPLIFIER