Yamaha BBT 500H, Руководство пользователя

Страница: 14 / 21

14
Utility Mode
The Utility Mode provides settings for the Crossover Filter and MIDI.
These settings are saved internally when you exit the Utility Mode and
kept even when the amplifier’s power is switched OFF.
●
Entering the Utility Mode
To enter the Utility Mode, from any mode press and hold the [FUNC-
TION] switch for more than 3 seconds, until “
utL
” appears on the dis-
play.
INPUT
TUNER
OUT
SPEAKER
First amplifier (HPF 500Hz)
Second amplifier (LPF500Hz)
SPEAKER
Produces
higher
frequencies
above 500Hz
Produces
low
frequencies
up to 500Hz
Detailed Parameter Settings
* Set the INPUT LEVEL
to its minimum level
INPUT
Bass
* Set to “
h50
” with
the COMP control
knob
* Set to “
L50
” with the
COMP control knob
●
How Knobs Function in the Utility Mode
In the Utility Mode, only the INPUT LEVEL, OUTPUT, and COMP knobs
function. All other knobs (SOUND TYPE, GAIN - TREBLE) have no func-
tion.
• INPUT LEVEL: Sets the Input Level
• OUTPUT: Sets the output level
• COMP: Sets the cut off frequency of the crossover filter
When the COMP knob is used (when setting the crossover filter), the
setting’s value is shown in the display. Other than that, only
utL
ap-
pears on the display.
Use the [MANUAL] switch and Memory Switches [1] through [5] to set
individual MIDI settings. (
→
[MIDI Settings] pg. 15)
q w e
When the COMP knob is used (when
setting the crossover filter), the setting’s
value is shown in the display. Other than
that, only
utL
appears on the display.
Individual MIDI
Settings
Crossover Filter
By connecting two BBT500Hs as shown in the illustration below, you
can create a bi-amplified system, where one amplifier is used to drive
high frequencies and a second amplifier drives low. This system uses
the amplifier’s onboard crossover filter (LPF or HPF) to determine the
range of frequencies that each amplifier will deliver.
●
Setting the Crossover Filter
1 Press and hold the [FUNCTION] switch for more than three sec-
onds (until “
utL
” appears on the display) to enter the Utility
Mode.
2 Rotate the COMP knob to set the Crossover filter’s cutoff fre-
quency.
* Range of cutoff frequency
L10
(LPF 100Hz) to
L00
(LPF 1000Hz),
byP
(Bypass),
h10
(HPF 100Hz) to
h00
(HPF 1000Hz), 93 steps
When using a bi-amplified system, make sure
that the INPUT LEVEL control knob on the
second BBT500H is set to its minimum level.
Ex.) Operating a bi-amplified system in which the crossover fil-
ter on the first amplifier is set to h50 (HPF 500Hz) to pro-
duce high frequencies, and the crossover filter on the sec-
ond amplifier is set to L50 (LPF 500Hz) to produce low fre-
quencies.