Pioneer D-23 Betriebsanleitung - Seite 11
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- 1. Electronic Crossover
- 2. Operating Instructions
- 3. Table of Contents
- 4. Features
- 5. 3-Way Amplifier Systems
- 6. Multi-Amplifier Systems
- 7. Connection Diagram
- 8. Connections
- 9. Precautions
- 10. Front Panel Facilities
- 11. Before Operating the
- 12. 4-Way Amplifier Systems
- 13. 2-Way Amplifier Systems
- 14. Characteristics Charts
- 15. Specifications
OPERATIONAL
PROCEDURE
1. Make the connections according to the multi-
amplifier system being employed.
NOTE:
Check that the power supply of the
amplifiers
is OFF.
2. Select suitable crossover frequencies by means
of the frequency selector controls.
Crossover frequencies are determined according
to the characteristics of each of the speakers.
See under "Crossover Frequencies" on page 8
for details.
3. Select suitable slopes for each of the crossover
frequencies
by
means of
controls. See under "Slopes" on page 8 for
details.
4. Turn the power ON, and adjust each of the
LEVEL controls on the front panel of the D-23.
See
under
"Phase"
Adjustments" on page 10 for details.
5. Commence playing the program source, setting
the volume control on the preamplifier to the
normal listening level. Further adjustments to
account for the room's acoustical characteristics
and
any
peculiarities
itself, will improve the overall quality.
NOTE:
The
SLOPE
selector controls must
over
to
the
FLAT
position
program.
and all the
D-23,
the
slope
selector
on
page
8,
and
"Level
in the program source
NEVER
be switched
during
the playing of a
4-WAY AMPLIFIER
SYSTEMS
4-way systems, shown in Fig. 14, consist of 4
separate power amplifiers connected to the output
terminals
(LOW,
MID-LOW,
HIGH) of D-23, plus independent pairs of speakers
connected to each power amplifier.
The crossover frequencies and slopes for each fre
quency
range
are
selector
and
slope
frequency range, after due consideration of the
characteristics of each combination of speakers
(see Fig. 16). This operation is described previously
under "Operational Procedure".
NOTES:
In 4-way systems, the lSdB/oct slope is usually the
•
best setting.
If any of the slope selector controls are set to
•
the 4-way amplifier system will not operate properly,
and there is a possibility of rupturing the speakers.
Input
Output
High
Mid-high
Mid-low
Low
63-630Hz
320Hz-3.2kHz
LOW
MID-LOW
HP
LP
HP
fc
Input
Mid-low
Mid-lOW
��
HP
���
LP
or
control
Slope
selector
control
FLAT
Low LP
MID-HIGH,
selected
by
the
frequency
selector
controls
for
FLAT,
Stereo power amplifier
Tweeter
High
mid-range
speaker
Low
mid-rang e
speaker
Woofer
Fig. 14
I .6kHz"' I 6kHz
MID-HIGH
HIGH
LP
HP
LP
fc
Fig. 15
High
High H P
Slope
Level
���f;gi
output
Mid-high
Mid-high
��
��
LP
?fc;
?fc�
output
or
or
control
control
FLAT
Mid-low
Slope
selector
output
control
Low
output
Fig. 16
and
each