Denon AVR-2801 Owners Manual - Page 11

Protector circuit, Note on speaker impedance - problems

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Connections • When making connections, also refer to the operating instructions of the other components. Connection jack for subwoofer with built-in amplifier (super woofer), etc. FRONT SPEAKER SYSTEMS (B) CENTER SPEAKER SYSTEM SURROUND SPEAKER SYSTEMS (L) (R) (L) (R) ENGLISH FRONT SPEAKER SYSTEMS (A) (L) (R) ANTENNA 9kHz EXT. IN R L IN 10kHz FR FL DVD LOOP ANT. SW C VDP AM SR SL TV / DBS FM COAX. 75 R L CD SIGNAL GND PHONO IN OPT.-1 VCR-1 VCR-2/ V.AUX CDR/ TAPE VCR-1 OPT.-2 COAXIAL OPT.-3 DIGITAL VCR-2/ V.AUX R L AUDIO CDR/ TAPE OUT MONITOR C-VIDEO S-VIDEO SURROUND R L CENTER L L R R SUB SURROUND WOOFER FRONT PRE OUT CENTER FRONT RBL FRONT RAL SPEAKER SYSTEMS • Precautions when connecting speakers If a speaker is placed near a TV or video monitor, the colors on the screen may be disturbed by the speaker's magnetism. If this should happen, move the speaker away to a position where it does not have this effect. Protector circuit • This unit is equipped with a high-speed protection circuit. The purpose of this circuit is to protect the speakers under circumstances such as when the output of the power amplifier is inadvertently short-circuited and a large current flows, when the temperature surrounding the unit becomes unusually high, or when the unit is used at high output over a long period which results in an extreme temperature rise. When the protection circuit is activated, the speaker output is cut off and the power supply indicator LED flashes. Should this occur, please follow these steps: be sure to switch off the power of this unit, check whether there are any faults with the wiring of the speaker cables or input cables, and wait for the unit to cool down if it is very hot. Improve the ventilation condition around the unit and switch the power back on. If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the unit, switch off the power and contact a DENON service center. Note on speaker impedance • The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4 Ω/ohms) are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set's power, wait for the set to cool down, improve the ventilation around the set, then turn the power back on. 11

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ENGLISH
11
IN
IN
OUT
SIGNAL
GND
DVD
EXT. IN
ANTENNA
VDP
TV/
DBS
VCR-2/
V.AUX
COAXIAL
VCR-2/
V.AUX
CDR/
TAPE
CDR/
TAPE
VCR-1
VCR-1
OPT.-1
OPT.-2
OPT.-3
FR
LOOP
ANT.
AM
FM
COAX.
75
SW
SR
CD
PHONO
FL
C
SL
SPEAKER SYSTEMS
AUDIO
DIGITAL
C-VIDEO
MONITOR
S-VIDEO
PRE OUT
L
R
L
R
L
R
L
R
L
R
L
R
L
R
B
R
L
A
FRONT
SURROUND
SURROUND
CENTER
FRONT
FRONT
SUB
CENTER
WOOFER
(L)
(R)
(L)
(R)
(L)
(R)
Connection
jack
for
subwoofer with built-in
amplifier (super woofer),
etc.
FRONT SPEAKER
SYSTEMS (B)
CENTER SPEAKER
SYSTEM
SURROUND SPEAKER
SYSTEMS
•
Precautions when connecting speakers
If a speaker is placed near a TV or video monitor, the colors on the screen may be disturbed by the speaker’s magnetism. If this should happen, move the speaker
away to a position where it does not have this effect.
Connections
•
When making connections, also refer to the operating instructions of the other components.
• This unit is equipped with a high-speed protection circuit. The purpose of this circuit is to protect the speakers under
circumstances such as when the output of the power amplifier is inadvertently short-circuited and a large current flows, when
the temperature surrounding the unit becomes unusually high, or when the unit is used at high output over a long period
which results in an extreme temperature rise.
When the protection circuit is activated, the speaker output is cut off and the power supply indicator LED flashes. Should
this occur, please follow these steps: be sure to switch off the power of this unit, check whether there are any faults with
the wiring of the speaker cables or input cables, and wait for the unit to cool down if it is very hot. Improve the ventilation
condition around the unit and switch the power back on.
If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the
unit, switch off the power and contact a DENON service center.
Protector circuit
• The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an
impedance lower than the specified impedance (for example speakers with an impedance of lower than 4
Ω
/ohms) are
connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set’s power, wait for the set to cool
down, improve the ventilation around the set, then turn the power back on.
Note on speaker impedance
FRONT SPEAKER
SYSTEMS (A)