Sound Storm Laboratories Amplifiers instruction

Tri-Way Speaker Wiring

Four Channel Amplifiers:

S664, S804, S1004 and S1204 Amplifiers

Tri-Mode Operational Output is a unique feature which allows a Crossover (Subwoofer) to Be operated in MONO mode, while the main speakers are playing in STEREO.

To engage the amplifier in this mode, place the Crossover (Subwoofer) switch in the "OUT" position. Use a 100v non-polar capacitor for a high pass crossover and a wire coil inductor to block high frequencies from the Crossover (Subwoofer) as shown in the figure below. Please review the table below for inductor and capacitor component values to determine the desired crossover frequencies.

SPEAKER IMPEDANCE

4-8 OHMS!

CH 3

SPEAKER

MINIMUM IMPEDANCE

8 OHMS!

SUBWOOFER

LEFT SPEAKER

Component Values

for 6dB Passive Crossover

Frequency	Inductor	Capacitor
80Hz	7.5mH	470uF
100Hz	6.5mH	330uF
120Hz	5.5mH	330uF
152Hz	4mH	220uF

CH 4

SPEAKER

LOW PASS FILTER

INDUCTOR

HIGH PASS FILTER

INDUCTOR

HIGH PASS FILTER

INDUCTOR

	LOW PASS FILTER
CH 1	INDUCTOR	CH 2
SPEAKER		SPEAKER

SPEAKER IMPEDANCE

4-8 OHMS!

SUBWOOFER

LEFT SPEAKER

MINIMUM IMPEDANCE

8 OHMS!

To BATTERY

To REMOTE OUTPUT

from HEAD UNIT

GROUND