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User Manual
2-Series
Insert the graphic equalizer between the signal source (usually a mixer) and the
power amplifiers (or the crossover if there is one). Adjust the level and equalization as
required to yield the desired system response.
For optimum signal-to-noise response, the gain structure of the sound system must be
properly set up. Each component of the sound system should be set at its nominal
operating level, starting with the first element in the system, usually a mixing console.
Each element should be run at its nominal operating level in order to take advantage
of the maximum signal-to-noise properties of that element. Loudspeaker amplifiers, as
the last element in the chain, should be set only as loud as necessary, in order to
avoid inducing unnecessary noise into the system.
SPECIFICATIONS
Inputs
Connectors: 1/4" TRS, female XLR (pin 2 hot)
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced 40kΩ, unbalanced 20kΩ
Max Input Level: >+21dBu balanced or unbalanced
CMRR: >40dB, typically >55dB at 1kHz
Outputs
Connectors: 1/4" TRS, male XLR (pin 2 hot)
Type: Impedance-balanced/unbalanced, RF filtered
Impedance: Balanced 100Ω, unbalanced 50Ω
Max Output Level: >+21dBu balanced/unbalanced into 2kΩ or greater
>+18dBm balanced/unbalanced (into 600Ω)
System Performance
Bandwidth: 20Hz to 20kHz, +0.5/-1dB
Frequency Response: <10Hz to >50kHz, +0.5/-3dB
Dynamic Range: 108db
Signal-to-Noise: 90db
THD+Noise: <0.004%
Interchannel Crosstalk: <-80dB, 20Hz to 20kHz
Function Switches
EQ Bypass: Bypasses the graphic equalizer section in the sig-
nal path
Low Cut: Activates the 50Hz 12dB/octave high-pass filter
Range: Selects either +/- 6dB or +/- 12dB slider boost/cut
range
Power Supply
Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz, 230VAC 50/60Hz
Power Consumption: 12W (231=15W)
Mains Connection: IEC receptacle
Physical Dimensions
231: Size: 3.5"Hx19"Wx6"D Weight: 6 lbs
215: Size: 1.75"Hx19"Wx6"D Weight: 4.7 lbs
131: Size: 1.75"Hx19"Wx6"D Weight: 4.7 lbs
Note: Specifications subject to change.