Yamaha SM10IV User Manual download pdf (Page 5)

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CONNECTION EXAMPLE 2

This example shows audio connections for a system using SW118IV or SW118IVS Subwoofers and a PN90 Crossover Network.

SW118IV

or

SW118IV

MIXING

CONSOLE

TWO-CHANNEL

GRAPHIC

EQUALIZER

LEFT

INPUTS

RIGHT

PN90

LEFT

HIGH

RIGHT

INPUT

TO POWER

AMP INPUTS

LEFT

RIGHT

LOW INPUT

TWO-CHANNEL

POWER AMPLIFIER

TWO-CHANNEL

POWER AMPLIFIER

OUTPUT

SPEAKE

R

SYSTEM

SW118IV

or

SW118IV

SPEAKE

R

SYSTEM

• Do not connect the PN90 between the power amplifiers and the SW118IV, SW118IVS subwoofers, as doing so will damage

the equipment.

• Although the PN90 has a standard load impedance of 15 kΩ, it can be used with loads between 7.5 and 30 kΩ, allowing use

with most power amplifiers.

• Since the LOW signal polarity is inverted at the crossover point between the LOW and HIGH signals, be sure to reverse the

polarity when connecting the SW118IV, SW118IVS input jacks to the power amplifier output jacks.

This polarity correction must not be made by reversing the polarity of the connections between the PN90 and the power

amplifiers, as doing so will damage the equipment. Please reverse the polarity between the power amplifiers and the

SW118IVs, SW118IVSs.

• The PN90 uses unbalanced connectors. Use shielded audio cable with high-quality phone plugs to connect the PN90.

The balance between the LOW and HIGH signal levels may be adjusted using the power amplifier volume controls. A good

starting point is generally achieved for typical sound sources by raising the LOW signal level about 8 dB higher than that of the

HIGH signal.

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Yamaha SM10IV User Manual Page 5

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