Behringer Ultrabass BA115, User Manual

Page: 8 / 9

8
ULTRABASS BA115
BEHRINGER is constantly striving to maintain the highest professional
standards. As a result of these efforts, modifications may be made from
time to time to existing products without prior notice. Specifications and
appearance may differ from those listed or illustrated.
4. INSTALLATION
4.1 Speaker connector
When combining several speakers/cabinets, you should bear
in mind the resulting overall impedance. Here are some brief
explanations about different kinds of connections:
Serial connection : The individual impedance values of the
connected speakers are added up. If two 4-Ohm speakers are
connected to one another, there is an overall impedance value of
8 Ohms .
Parallel connection : If speaker/cabinets with identical
impedance values are connected in parallel, the overall nominal
impedance is reversely proportional to the number of speakers,
e.g. if you connect two speakers/cabinets, the nominal impedance
is halved; if you connect three speakers/cabinets, the nominal
impedance is one third of the individual speakers’ impedance;
with four speakers, it’s one quarter, and so on. For example, this
way you can turn two 8-Ohm systems into one 4-Ohm system.
If four or more speakers/cabinets need to be connected, this
can be done using a serial parallel connection . With four
speakers with an impedance value of 4 Ohms each, the resulting
overall impedance does not change.
+
Whenever possible, try to use thick and short speaker
cables to minimize power loss. Don’t lay output cables
near input cables.
Wiring options for loudspeakers are additionally explained in
the following illustrations and tables.
Fig. 4.1: Different types of connections
Number of speakers 2x 2x 2x 4x 4x 4x
Impedance of
each speaker (
Ω)
4 8 16 4 8 16
Resulting impedance with
parallel connection (
Ω
)
2 4 8 1 2 4
Resulting impedance with
serial connection (
Ω
)
8 16 32 16 32 64
Resulting impedance with
serial parallel connection (
Ω
)
- - - 4 8 16
Table 4.1: Speaker wiring options and resulting impedance
+
Please note that if the LINK connector is utilized, the
BA and BB series bass cabinets only support parallel
connections.
4.2 Audio connections
Fig. 4.2: Professional speaker connector with polarity allocation
Fig. 4.3: 1/4" TS connector
5. SPECIFICATIONS
High-power bass speakers 15" BUGERA
TM
Aluminum cone speaker
Sensitivity 97 dB @ 1 W / 1 m
Impedance 8 Ohm
Frequency response 40 Hz - 16 kHz
Power (RMS / Music) 600 W
Tweeter 1" tweeter driver
SPEAKER CONNECTIONS
Input/Link
2 professional
speaker connectors,
compatible with
NEUTRIK
®
SPEAKON
®
(wired in parallel)
as well as one 1/4" TS
connector
DIMENSIONS/WEIGHT
Dimensions ( H x W x D ) 655 mm (25 4/5") x
655 mm (25 4/5") x
366 mm (14 2/5")
Weight ca. 32 kg (70.6 lb)
5. SPECIFICATIONS