Yamaha BBT410S Benutzerhandbuch - Seite 7

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Using the Speaker System

■ Amplifier Requirements

The speaker system has a rated power handling capability of 250W and

an impedance of 4Ω.

Check the specifications (power output/impedance) of the head ampli-

fier/power amplifier you are going to connect to the speaker system and

use it under the conditions that meet the requirements of the speaker

system.

Also, if you are planning to connect two or more speaker systems to-

gether, determine the system's total impedance* and use a head ampli-

fier/power amplifier that is within the system's requirements.

■ Connections

• To protect the speaker system from damage, make sure that

the power is switched OFF on the head amplifier/power am-

plifier or the volume is set to "0" before making any connec-

tions.

• Use the supplied speaker cable or a commercially available

speaker cable (standard monaural phone plug) when mak-

ing connections. The use of a normal shielded guitar cable,

etc., may result in overheating or damage to the cable, as the

level of the signal is high.

Using the supplied speaker cable, connect the INPUT jack on the

enclosure's rear panel to the Speaker Output jack on the head amplifier/

power amplifier (SPEAKER 1, 2 jack on the Yamaha BBT500H).

■ Adjusting the Tweeter Level

The tweeter mainly produces high frequencies above 4kHz.

Use the TWEETER LEVEL control knob on the unit's rear panel to ad-

just the output level of the tweeter.

[Speaker System Rear Panel]

Tweeter Level Adjustment

* Total Impedance

Whenever two or more speaker cabinets are used in a system, the

total impedance of the speaker system will vary according to the

manner in which the speakers are connected.

● Connecting in a Series

Total impedance = 1st Speaker + 2nd Speaker + 3rd Speaker ...

Connecting three 4Ω speaker cabinets in a series as shown below,

results in a total impedance of 12Ω.

● Connected in Parallel

Total impedance =

Connecting three 4Ω speaker cabinets in a parallel configuration

as shown below, results in a total impedance of about 1.3Ω.

Speaker Output Jack on the Head

Amplifier/Power Amplifier.

Speaker Cable (supplied)