JL Audio Subwoofeの取扱説明書

ページ1に含まれる内容の要旨

Subwoofer Specifi cations
8W1-4 8W1-8
Fs (free-air resonance): 33.2 Hz
35.7 Hz
Qts (total speaker “Q”):
0.345 0.385
Qes (electrical “Q”):
0.355 0.414
Qms (mechanical “Q”):
11.5 6.247
3
3
Vas (equivalent compliance):
0.90 ft 25.5 liters 0.78 22.1 liters
ft
Xmax (linear excursion one-way): 0.282 7.2
in. mm 0.282 7.2 in. mm
Effi ciency (1W/1m)*:
86.0 dB 85.6 dB
2 2
2 2
Sd (effective piston surface area):
30.7 in 0.0198m 30.7 0.0198
in m
Re (DC resistance):
3.34 Ω 6.89 Ω
Znom (nominal impedance):
4

ページ2に含まれる内容の要旨

Wired directly to the amplifi er: A single 4Ω speaker will present a 4Ω load. A single 8Ω speaker will present a 8Ω load. With speakers wired in parallel: Two 4Ω speakers will present a 2Ω load. Two 8Ω speakers will present a 4Ω load. With speakers wired in parallel: Three 4Ω speakers will present a 1.3Ω load. Three 8Ω speakers will present a 2.7Ω load. Do NOT use different impedance speakers when using multiple subwoofers! JL Audio recommends using subwoofers as part of a bi-amplifi ed system u