Yamaha BBT 500H, Owner'S Manual

Page: 9 / 21

9
* Total Impedance
Whenever two or more speaker cabinets are connected to the unit,
consideration must be given to the total impedance of the speaker
system.
Normally, a speaker cabinet has an impedance of 4, 8 or 16
Ω
. But
when two or more speaker cabinets are used together, the total
impedance will change according to the manner in which the cabi-
nets are connected.
●
Connecting in a Series
Total impedance = 1st S 2nd S 3rd Speaker …
Connecting three 4
Ω
speaker cabinets in a series as shown below,
results in a total impedance of 12
Ω
.
Panel Controls and Connections
This setting can be used when you want the line signal
processed with the same EQ setting as the speaker.
* The FX LOOP is active on both PRE EQ and POST EQ signals.
@0
Speaker Simulator Switch (SP SIM: OFF/LINE/ON)
This switch is used to switch the Speaker Simulator circuit ON/OFF.
When the Speaker Simulator is activated, this special circuit adds the
live characteristics of a speaker to the line out signal and headphones
output. This feature is useful when you want to produce a distorted tone
with a speaker system that incorporates a tweeter, or to add the reso-
nance of a large speaker and its enclosure to a speaker system that
uses only small speakers. The sound created with the Speaker Simula-
tor is optimized to compliment the selected Sound Type.
OFF .............. Deactivates the Speaker Simulator on LINE OUT,
SPEAKER, and PHONES jack signals.
LINE ............. Activates the Speaker Simulator on LINE OUT, and
PHONES jack signals only.
ON ................ Activates the Speaker Simulator on LINE OUT,
SPEAKER, and PHONES jack signals.
* The Speaker Simulator can only be applied to the LINE OUT jack output
when the
!9
Line Out Source Switch is set to “POST EQ”.
@1
Output Limiter Switch (OUTPUT LIMITER: ON/OFF)
This switch is used to switch the Output Limiter circuit ON/OFF.
When set to the ON position, the limiter suppresses the signal if it ex-
ceeds the threshold before sending it to the SPEAKER jack and LINE
OUT jack.
OFF .............. Deactivates the Limiter on both LINE OUT and SPEAKER
jack signals.
ON ................ Activates the Limiter on both LINE OUT and SPEAKER
jack signals.
@2
MIDI OUT Jack
Connect this jack to the MIDI IN jack on an external MIDI device that
can save MIDI data (such as a MIDI data filer, etc.), and save patch data
from the BBT500H to an external device. (
→
pg. 16: MIDI Bulk Out)
Also, when MIDI Merge is set ON, MIDI data received from an external
MIDI device via the MIDI IN jack is transmitted from the MIDI OUT jack
without alteration. (
→
pg. 16)
@3
MIDI IN Jack
Connect this jack to the MIDI OUT jack on MIDI Foot Controller, etc., to
select patches, control volume, etc., with the MIDI Foot Controller. (
→
pg. 15)
Also, patches that have been saved to an external MIDI device can be
loaded into the BBT500H’s internal memory. (
→
pg. 16: MIDI Bulk IN)
@4
Speaker Jacks (SPEAKER 1, 2)
Two Speaker Jacks are provided for connecting speaker systems.
The two jacks are connected in parallel inside the unit. Make sure that
the speaker cabinet you use meets the requirements given below.
●
When using a single SPEAKER Jack (1 or 2)
Please use a system that complies with one of the following re-
quirements.
• The total impedance* of the circuit should never be less than 2
Ω
.
• A 2
Ω
speaker system must have a power handling capability of
500W or greater.
• A 4
Ω
speaker system must have a power handling capability of
250W or greater.
• An 8
Ω
speaker system must have a power handling capability of
125W or greater.
●
When using both SPEAKER Jacks (1 & 2)
Please use a system that complies with one of the following re-
quirements.
• The total impedance* of the circuit should never be less than 2
Ω
.
• A 4
Ω
speaker system must have a power handling capability of
250W or greater.
• An 8
Ω
speaker system must have a power handling capability of
125W or greater.
To obtain optimum performance from the amplifier, we recommend that
a speaker system with a power handling capability of 250W or greater
and impedance of 4
Ω
be used with each SPEAKER jack (1 and 2).
* For U.S. and Canadian models only
To protect against electromagnetic waves, attach the sup-
plied Clamp Filters to the cables connecting the amplifier’s
SPEAKER 1, 2 jacks to the speakers. (
→
pg. 17)
@5
Power Connector (AC IN)
Connect the supplied power cable to this terminal to supply the unit with
power from an AC power outlet.
When connecting the power cable, make sure the
amplifier’s POWER switch is turned OFF.
●
Connected in Parallel
Total impedance =
Connecting three 4
Ω
speaker cabinets in a parallel configuration
as shown below, results in a total impedance of about 1.3
Ω
.
4 4 4