Legacy LA4670-SL BK User Manual

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SUBWOOFER MINIMUM
IMPEDANCE 8 OHMS!
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HIGH PASS
FILTER (CAPACITORS)
SPEAKER IMPEDANCE
4 - 8 OHMS!
LOW PASS
FILTER (INDUCTOR)
Full Range
Speakers
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2-Channel Amplifiers:
Two Channel Mode
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LEFT
SPEAKER
RIGHT
SPEAKER
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Bridged Mode
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SUBWOOFER
Speaker
SPEAKER
IMPEDANCE
4-8 OHMS
SPEAKER
IMPEDANCE
2-8 OHMS
Dual Tri-Mode Speaker Wiring
To engage the amplifier in this mode, place the Crossover (Subwoofer) switch
in the "FULL" position. Use a 100v non-polar capacitor for a high pass
crossover and a wire coil inductor to block high frequencies from the
Subwoofer, as shown in the figure below. Please review the table below for
inductor and capacitor component values to determinethe desired crossover
frequencies.
Component ValuesComponent Values
for 6dB Passive
Crossover
for 6dB Passive
Crossover
Frequency Inductor Capacitor
80Hz 7.5mH 470uF
100Hz 6.5mH 330uF
120Hz 5.5mH 330uF
150Hz 4mH 220uF
Tri-Mode Operation is a unique feature which allows two channel of an
amplifier to drive a subwoofer operated in MONO mode, while
simultaneously driving full range speakers in STEREO.
Four Channel Speaker Wiring
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CH 3
SPEAKER
CH 1
SPEAKER
CH 2
SPEAKER
CH 4
SPEAKER
Bridged Speaker Wiring
Four Channel Amplifiers:
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SUBWOOFER
SPEAKER
++
SUBWOOFER
SPEAKER
SPEAKER IMPEDANCE
4 - 8 OHMS!
SPEAKER
IMPEDANCE
4 - 8 OHMS!
To REMOTE TURN-ON
from HEAD UNIT
To REMOTE TURN-ON
from HEAD UNIT

Legacy LA4670-SL BK Specifications

General

Brand	Legacy
Model	LA4670-SL BK
Category	Car Amplifier
Language	English