Specifications, Connecting the speakers (2), Connecting to the amplifier – Teac LS-301 User Manual
Page 4: Checking the phase
4
Specifications
Format . . . . . . . . . . . . . . . . . . . . . Coaxial two-way speakers, Bass reflex (rear ports)
Loudspeaker units
Low-frequency . . . . . . . . . . . . . . . . . . . . ø100mm (4") chassis with paper cones
High-frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2cm (3/4") soft dome
Rated input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 W
Maximum input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Ω
Output sound pressure level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 dB (1 W, 1 m)
Playback frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65–40,000 Hz
Crossover frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 .8 kHz
Cabinet volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 .5 liters
External dimensions (W × H × D) . . . . . . . . . . . . . . . . . . . . . . . 161 × 230 × 207 mm
(6 3/8" × 9 1/8" × 8 1/4")
(not including terminal protrusions)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 .7 kg (6 lb)/speaker
Included accessories . . . . . . . . . . . . . . . . . . . . . . . . . .Speaker cables (1 .8 m or 6') × 2
Cork speaker feet × 8
Owner's manual (this document) × 1
Warranty × 1 (for customers in the USA and Canada only)
o
In order to improve the product, specifications and appearances might
be changed without notice .
o
Weight and dimensions are approximate .
o
Illustrations in this Owner's Manual might differ in part from the actual
product .
Connecting the speakers (2)
Connecting to the amplifier
Use speaker cables to securely connect the positive (+) terminals of the amp
to the positive (+) terminals of the speakers and the negative (−) terminals of
the amp to the negative terminals (−) of the speakers .
Amp (AI-301DA, etc.)
Checking the phase
If the polarities (+/−) of the left and right speakers do not match, they will be
out of phase and good stereo playback sound will not be possible . To check
the phase, play a mono audio recording that has strong bass frequencies
through one speaker and then both speakers . If the bass frequencies sound
is weaker with both speakers, they are probably out of phase .
If they are in phase, low-frequency sound should be rich abundant and the
stereo image should be placed in the middle between the left and right
speakers . If they are out of phase, low frequencies will be missing and the
stereo image will be unclear . In this case, check the polarities (+/−) of the
connections between the speakers and the amplifier .
By reversing the polarity for one speaker, the phase can be corrected .
Speaker cables are connected to the input terminals on the backs of the
speakers . The red terminal is positive (+) and the black terminal is negative
(−) . Check these carefully when making connections .
Disassembly and modification prohibited
Never disassemble or modify this equipment .
If repair or modification of this equipment is conducted by anyone other
than one of our designated service providers, the warranty will be invali-
dated immediately even if the product is still within the warranty period .
If this equipment is broken or damaged by repair or modification con-
ducted by anyone other than one of our designated service providers,
our company will bear no responsibility even if harm occurs to people or
property .