APOGEE ACOUSTICS ORIGINAL ACTIVE CROSSOVER Owners Manual And Setup Instructions - Page 4

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DUETTA SERIES II

The Duetta Series II has a dedicated active crossover. The crossover is set for

operation as a two-way crossover with the correct frequency shaping networks for

the

Duetta Series II speaker.

SYSTEM CONFIGURATION FOR OPERATION OF ACTIVE CROSSOVER WITH LARGE

FULL RANGE APOGEE

Bi-Amp Operation

Configuration A or Configuration B may be utilised for the bi-amp operation. The

selection of the most satisfactory configuration is based on a number of system

considerations such as the amplifier, interconnects, cable characteristics and

overall acoustic properties resulting from the selected configuration.

a. Connect crossover between pre-amp and power amps.

b. Connect pre-amp output to crossover input. Connect active crossover woofer

output to the woofer amp input and active crossover TWT output to the MRT

amp input.

CAUTION!! Prior to making power amplifier connections to the speaker insure that all

front end connections have been properly made in full accordance with the

manufacturers' instructions. Pre-amp gain should be set low and then

adjusted to listening level.

Do not make front end system changes while the power is on and speaker

connected. All such changes should be made with power off and the speaker

disconnected.

c. Connect the left channel woofer amplifier to the terminals labelled

"Woofer" of the left speaker transformer box. (See Figure 2.1)

d. Connect the right channel woofer amplifier to the terminals labelled

"Woofer" of the right speaker transformer box.

e. Connect the left channel of the midrange/tweeter amplifier to the

terminals labelled "Midrange" of the left transformer box.

DO NOT CONNECT anything to the tweeter terminals. The midrange and tweeter

crossovers are contoured within the transformer box.

f. Connect the right channel of the midrange/tweeter amplifier to the

terminals labelled "Midrange" of the right the transformer box.

(See Figure 2)

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