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Overview: The dbx 215s single 15-band graphic equalizer is a versatile,
professional-quality EQ with simple, straight-forward controls. It features two
independent channels and 15 frequency bands, broken down in 2/3-octaves. Each
non-conductive slider has approximately 1" of movement with a detent at the 0
(flat) position. The 215s fits neatly into a standard equipment rack (1U space
required), and includes 4 rack mount screws and washers.
Input Gain: The 215s is equipped with a rotary input gain control to set the
signal level to the equalizer. The input gain control has a range of -12dB to
+12dB. You can monitor the input to the EQ through the 4-LED Output Level Bar
Graph, which has green (2), yellow (1), and red (1) indicators. There is also a
red LED to indicate if the input signal is clipping. The 215s has independent
input gain controls for each channel.
Frequency Bands: The 215s includes the following frequency bands: 25Hz, 40Hz, 63Hz, 100Hz, 160Hz, 250Hz, 400Hz,
450Hz, 630Hz, 1kHz, 1.6Hz, 2.5kHz, 4kHz, 10kHz, and 16kHz.
Switchable Boost/Cut Range: The dbx 215s has a maximum
boost/cut range of +/- 12dB. If desired, you can switch to a range of +/- 6dB.
This gives you finer control within the range. The boost/cut range switch is
located on the front panel. When the button is pressed in, the button lights up
to indicate the range is +/- 12dB. When the button is in the out position, the
range is +/- 6dB, and the button is unlit. There are Boost/Cut Range switches
for each channel.
Low Cut: To instantly cut out low frequencies, you can
engage the built-in 50Hz 12dB/octave high pass filter. The Low Cut switch is
located on the front panel, and remains lit when pressed in and activated. There
are Low Cut switches for each channel.
EQ Bypass: Each channel has an EQ Bypass switch, which
bypasses the graphic equalizer section in the signal path, when activated. An EQ Bypass switch
is provided for each channel, and remains lit when engaged.
Inputs: The dbx 215s is equipped with a 1/4" TRS (tip/ring/sleeve) phone jack
and a female locking XLR (pin 2 hot) input connector for each channel. The
input can accept balanced or unbalanced input sources. The maximum acceptable
input level is typically +22dBu (ref: 0.775Vrms).
Outputs: Each channel has a 1/4" TRS phone jack and a male XLR output
connector. The outputs can be used with either balanced or unbalanced loads. The
maximum output level is greater than +21 dBu balanced/unbalanced into 2 kΩ
or greater, >+18 dBm balanced/unbalanced (into 600Ω).
AC Power: The 215s has a 3-pin IEC power cord receptacle, and accepts 100-240
- Frequency Response: <10 Hz to >50 kHz, +0.5/-3 dB
- Bandwidth: 20 Hz to 20 kHz, +0.5/-1 dB
- Dynamic Range: Typically >112 dB
- Signal-to-Noise: Typically >95 dB
- THD+Noise: <0.003%
- Interchannel Crosstalk: <-90 dB, 20 Hz to 20 kHz
- Input Impedance: Balanced 40 kΩ, Unbalanced 20 kΩ
- Output Impedance: Balanced 100 Ω, Unbalanced 50 Ω