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アンプ DaytonAudio MCA3545のPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。DaytonAudio MCA3545 4 ページ。 80 watt bi-amplifier

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Jumper Settings

The MCA3545 has user selectable high and low frequency crossover points

which make the amplifier extremely versatile. The unit has 5 crossover

points that feature 24dB / octave slope and are selected using jumper type

connectors. Fig 1 shows location of crossover points on the preamp board

along with the proper method of connecting the jumpers.

Note: The factory setting is 3.8KHz for both the tweeter and woofer circuits.

Both the high (Tweeter) and low frequency (Woofer) crossover circuits have

their own jumpers. This makes it possible for the user to select different

crossover points for the "tweeter" verses the "woofer" circuits. The "tweeter"

connections are always the two left pins for each crossover point.

Note: Only one crossover point should be selected for each circuit (tweeter

or woofer).

Low Frequency Boost

The low frequency circuit also features a switchable boost setting. The boost

circuit adds roughly 3dB of gain throughout the low frequency range.Because of

this the crossover points for each setting are higher when the boost is activated.

Note: The factory setting for the boost circuit is "OFF". When activating the

boost both "Boost" jumpers must be in the "ON" position.The boost circuit only

effects the low frequency response.

Pre Amp Board

Fig. 1

Frequency Response Graphs

These graphs show the frequency response of each crossover point for

both the low frequency (woofer) and high frequency (tweeter). Each graph

also shows the effect of the "boost" circuit for each low frequency crossover

point. Note: As you can see from the graphs the crossover points are higher

when the boost circuit is activated.

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