Samson dB500a - Manual (Page 12)

Operating the dB500a
Controls and Functions - continued
LOW FILTER
The dB500a also incorporates a Low-cut
FILTER which when engaged will roll off the low
frequency response of the cabinet beginning
at 80Hz. The low cut FILTER is two pole, which
means that the low frequency roll off will gradu-
ally cut more and more of the low frequencies
(12dB per octave). When you press the FILTER
switch in, the green LED will illuminate indicat-
ing that the Low-cut FILTER is engaged.
OUTPUT SWITCH
The Output switch is used to select the signal
that is sent to the Line Output. You can have
either a parallel output directly from the Line
input, or a mixed signal including the Mic and line inputs plus the EQ and limiter. When the switch is in the up position, the signal on
the Line Output is exactly the same as the signal on the Line Input. When the switch is in the down position the Line Output carries
the MIX of the Mic and Line Inputs. If the Level controls, High and Low Equalizer and Filter are used, they will also effect the signal
sent to the Line Output.
Optimax LIMITER
In order to keep the sound loud and clean, the dB500a incorporates Optimax multi-band Limiting. The Optimax Limiter divides
the frequency range into separate parts so they can independently react to the limiting circuit. This ensures that the high energy for
the low frequency of a bass drum doesn’t cause the vocals to be over compressed. When you press the LIMITER switch in, the red LED
will illuminate indicating that the Optimax dynamics processing is engaged.
IMPORTANT NOTE: Unless you are using an external limiter, it is highly recommended that the LIMITER switch be engaged at all
times. This will ensure the cleanest possible output, and will protect your speaker system when it accidentally receives a clipped sig-
nal from your mixer.
Input and Output Connectors
MIC XLR Input
The dB500a’s microphone input accepts a standard low impedance (150-600 Ohms) input and the connection is made via a standard
female XLR connector. The microphone input features a high quality, discrete transistor pre-amp providing transparency and extend-
ed dynamic range. The MIC input can work simultaneously with the LINE input so it is possible to use a microphone while playing
alone with a keyboard that is plugged into the dB500a’s LINE input. You can control the microphone input by using the MIC LEVEL
control as described in the section below.
LINE OUTPUT
You can run several monitors by using the LINE OUTPUT to daisy-chain one dB500a to another. The LINE OUTPUT is a balanced out-
put that, depending on the position of the OUTPUT switch,will have either a direct parallel output of the LIne input, or the Mix of the
Line and Mic input. For more information on the Output switch, see section 8 above. For more information on cables and wiring, see
page 13 of this manual for a detailed wiring diagrams.
LINE Combo Balanced Input
For added convenience, the dB500a employs a Combo connector that accepts a standard XLR mic cable for balanced line level
signals, or a standard 1/4" instrument cable for either balanced (TRS – TIP/RING/SLEEVE) or unbalanced (TS – TIP/SLEEVE) line level
signals. The LINE input can work simultaneously with the Mic input so it is possible to use a microphone while playing alone with a
keyboard that is plugged into the dB500a’s LINE input. You can control the LINE input by using the LINE LEVEL control as described
in the previous page. For more information on cable and wiring, see page 13 of this manual for a detailed wiring diagrams
7
PROTECTION
DESIGNED AND ENGINEERED IN THE UNITED STATES BY SAMSON TECHNOLOGIES
www.samsontech.com
dB500A
MADE IN CHIN
A
SAMSON
MIC LEVEL
0 10
AMP / CLIP
LINE OUTPUT MIC INPUT LINE INPUT
LINE LEVEL
0 10 12 12 12 12
8 8 8 8
4 4 4 4
EQUALIZER
LOW 100Hz HIGH 10KHz
P E A K 8
10
9
7 8
10
9
11
11 12
12
ENGLISH
8