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LOWPASS ON/OFF
Pushing this button “IN” engages the Lowpass filter. Pushing this button
“OUT” will bypass the filter.
LOWPASS FREQUENCY
Turning this control sets the Lowpass crossover point from 50Hz (fully
counterclockwise) to 5kHz (fully clockwise).
HIGHPASS FREQUENCY
Turning this control sets the Highpass crossover point from 50Hz (fully
counterclockwise) to 5kHz (fully clockwise).
HIGHPASS ON/OFF
Pushing this button “IN” engages the Highpass filter. Pushing this button
“OUT” will bypass the filter.
Note: By engaging both Highpass and Lowpass filters and setting the desired
crossover points, a Bandpass filter can be created:
D7 CROSSOVER FREQUENCIES
Diamond Audio
D7 Professional Reference Series Amplifiers
feature fully
variable crossovers. The frequency control knobs (located in the tray on the
top of the amplifier) are labeled 50Hz when the knob is rotated fully counter-
clockwise (left) and 5kHz when rotated fully clockwise (right).
To make basic setting of the crossover frequencies a little easier, we’ve
come up with the following rotational diagram:
HIGHPASS/LOWPASS
FREQUENCY
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Notice that the outer most circle of numbers (1:00, 2:00, etc.) represent
numbers as they appear on the face of a clock. The number underneath each
“hour” designation on the simulated clock face is the
approximate
crossover
frequency at that position.
BRIDGING
All pairs of Diamond Audio D7 amplifier channels are capable of being
bridged to a 4 Ohm mono output. Creation of the mono channel is accomp-
lished by using the
left channel positive (+)
output connection of the amplifier
for the speaker positive and the
right channel negative (-)
output connection
of the amplifier for the speaker negative.
Example: Two 8 ohm Woofers Wired In Parallel = 4 ohm Bridged Impedance.
Note: It is important that a 4 Ohm minimum total speaker impedance load is
observed! If an impedance load of less than 4 Ohms is used, you will
eventually damage your amplifier and void your warranty.
RCA INPUTS AND OUTPUTS
The
D7056 Professional Reference Amplifier
features 3 pairs of stereo input
RCA jacks. Each pair of amplifier channels can be driven separately or they
can be combined in a number of different ways. This amplifier IS NOT
equipped with an AUXILIARY Crossover.
