Single channel 31-band constant-Q equalizer The BBE EQA131 Equalizer delivers the precise EQ you need to handle the entire spectrum of applications. On the EQA131’s active filter sections are the constant-Q (constant bandwidth) design: the bandwidth of each individual filter has a perfect balance between being narrow enough to prevent unwanted interaction between filters, yet wide enough to deliver exactly the type of correction curve demanded by even the most unusual acoustic surroundings. Also included are continuously variable high and low cut filters. The low-cut filter ranges from 10Hz to 250Hz (12dB/octave). The high-cut filter ranges from 3KHz to 40Hz (12dB/octave). A selectable control range allows musicians to switch easily between 6 dB and 12 dB on the graphic filters. Along with TRS and XLR input connectors, EQA131 comes complete with a Bypass switch, Signal Clip indicator, Output gain control and selectable line voltage switch between 115 and 230 VAC operations. Features: Constant-Q filters Variable low-cut filter from 10Hz to 250Hz (12dB/octave) Variable high-cut filter from 3KHz to 40Hz (12dB/octave) True hard-wire bypass Balanced XLR or TRS input/output connections Clip indicator Line voltage switchable between 115 and 230 VAC operations 5-year warranty
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More info: BBE EQA131 Single Channel 31-Band Eq
These units are extremely well built. The controls exude great precision, and the feel is a solid "click". Also, when you open the box, you won’t find the external power supply that accompanies most processors in this price range. That’s because dbx understands how difficult external power supplies can be to work with and even though it costs a little more they put the high quality power supply right in the unit. All the inputs and outputs are TRS differentially balanced 1/4" jacks that are bolted down to the chassis. This "nutting down" of the jacks ensures that even if someone stomps on a cable plugged into the unit, it’s not going to tear up the circuit board inside. Every dbx crossovers features Linkwitz-Riley 24dB per octave filters, the professional standard. But then again, what did you expect? Via a switch on the back panel, you first select whether you’re operating your system in stereo 2-way or mono 3-way. Then you also set, on the back panel, whether or not you want to mono sum the LF (subwoofer) out. (Most systems that use a subwoofer are mono subbed to take advantage of amplifier power and because low frequencies are non-directional.) Back panel switches allow you to select the range of the crossover frequencies individually for both channels. The crossover frequency controls have a green LED that indicates when the x10 switch on the back panel is activated (so you won’t have to check the switch position on the back every time you wonder where it’s set). All these switches are on the back panel because it could be disastrous if you were to change them mid-program. On the front panel you’ll notice there are LEDs that indicate whether the unit is in mono or stereo mode. Each channel has an input gain control for proper level setting. There’s a recessed 40 Hz low cut (HPF) on each channel to remove unwanted low frequencies. Both the low and high outputs on each channel have a gain control to allow muting of individual outputs and for level matching. Also, these outputs each have phase reverse switches that will help get you out of a bind without having to reconfigure your system. These phase reverse switches may be internally reconfigured as mute switches. You’ll get great performance, all the features you’d expect from a professional product and the knowledge that you’re buying a processor from the people that have been producing the worlds finest processors for over 20 years.
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More info: Dbx 2-Way/3-Way Mono Crossover
2-input / 6-output Digital Loudspeaker Management processor The DS26 loudspeaker management system features 2 inputs and 6 outputs, and has a 5 band parametric equalizer for each output. Outputs all feature crossover filters, 5 band parametric equalizer, selectable high and low shelving filters, fully featured limiter and delay. Full metering is provided for inputs and outputs, with mute and access buttons allowing quick set up and gain adjustment. Other features included a choice of 12, 18 or 24dB/Octave roll-off, and Butterworth, Bessel or Linkwitz-Riley responses. Independent control of each high and low pass filter allows asymmetric crossover bands to be created. The DS26 can also be controlled from a PC via the DS24’s RS232 connection. Along with XLR input/output connectors, DS26 comes complete with selectable line voltages between 90 and 250 VAC operations. Specifications: 24-bit AD/DA, 48k sampling rate Internal 32-bit DSP processing Parametric EQ provides -40dB to +6dB of gain with frequency gain and bandwidth adjustment Full limiter for each output 7ms delay per output RS-232 Computer control 5 year warranty
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More info: BBE DS26 2In/6Out Digital Crossover/Spkr Processor
RANE AC 22B Active Crossover The Rane AC 22B Active Crossover is configurable as stereo 2-way or mono 3-way. It employs state-variable 4th-order Linkwitz-Riley filter alignments to minimize phase difficulties in the critical crossover region. The AC 22B uses XLR connectors with active balanced inputs and outputs. The Linkwitz-Riley alignment is two cascaded 2nd-order Butterworth filters exhibiting identical phase characteristics on their Low pass and High pass Outputs. This guarantees in-phase outputs at all frequencies, mandatory for proper acoustic summing of common signals from adjacent drivers in the crossover region. An added benefit of this topology is steep 24 dB per octave rolloff slopes. A slope of this magnitude guarantees drivers designed to produce a specific range of frequencies, and no more, will not be driven past their limits, thereby minimizing distortion and driver fatigue. To further guarantee the transparent operation of the AC 22B, adjustable time delay circuits appear on the low (and mid when used in 3-way mode) outputs of each channel to compensate for any physical misalignment of the drivers. Time correction ensures the mechanical phase alignment of adjacent drivers will be acoustically correct, thus maintaining the integrity of the electrical phase alignment of the crossover’s filters. The low delay circuit may be internally transplanted to the high output when neccessary. CD horn equalization is also possible with an internal modification. A mono subwoofer switch provides the option to sum both low outputs in stereo 2-way mode.
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More info: Rane Stereo 2 Way Or 3 Way Crossover
DBX 234-XL: Stereo 2 or 3-Way or Mono 4-Way Crossover The dbx 234XL Crossover is amazingly versatile and extremely well built. The controls exude great precision and all the inputs and outputs are balanced XLR connectors that are screwed directly to the chassis. This connecting of the jacks ensures that even if someone steps on a cable plugged into the unit, it’s not going to tear up the circuit board inside. Like all dbx crossovers, the 234-XL feature Linkwitz-Riley 24dB per octave filters, the professional standard. It also has a built-in power supply; no wall wart. Two back panel switches let you select stereo 2-way, 3-way or mono 4-way. Another back panel switch also selects whether or not you want to mono sum the LF (subwoofer) out. (Most systems that use a subwoofer are mono summed to take advantage of amplifier power and because low frequencies are non-directional.) Back panel switches allow you to select the range of the crossover frequencies individually for both channels. The crossover frequency controls have a green LED that indicates the x10 switch on the back panel is activated. All these switches are on the back panel because it could be disastrous if you were to change them mid-program. On the front panel you’ll notice there are LEDs that indicate whether the unit is in mono or stereo mode. Each channel has an input gain control for proper level setting. There’s a recessed 40Hz low cut (HPF) on each channel to remove unwanted low frequencies. Both the low and high outputs on each channel have a gain control ranging from -infinity to +6dB, to allow muting of individual outputs and for level matching. Also, these outputs each have phase reverse switches that’ll help get you out of a bind without having to reconfigure your system. These phase reverse switches may be internally reconfigured as mute switches. You’ll get great performance, all the features you’d expect from a professional product and the knowledge that you’re buying a processor from the people that have been producing the world’s finest processors for over 20 years. The technology that made dbx famous brings you a crossover which has been tested to the highest professional standards at a price that’s just too low to believe. Features: XLR differentially balanced ins and outs Mode switches for mono 4-way or stereo 2-way/3-way operation Low frequency summed (subwoofer) output x10 range switch on both channels 40Hz high pass (low cut) filter both channels Phase reverse switch on all outputs Individual level controls on all band outputs 24dB per octave Linkwitz-Riley filters (the professional standard) Stereo/Mono status LEDs indicate the selected mode dbx 2 year parts and labor as standard CSA NRTL/C approved CE compliant
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More info: Dbx Stereo 2/3 Way Mono 4 Way Crossover W/Xlr
Features: XLR balanced ins and outs Mode switch for stereo 2-way or mono 3-way operation Low frequency summed (subwoofer) output x10 range switch on both channels 40Hz high pass (low cut) filter both channels Phase reverse switch on all outputs Individual level controls on all outputs 24dB per octave Linkwitz-Riley filters (the professional standard) Stereo/Mono status LEDs indicate the selected mode dbx? 2 year parts and labor as standard CSA NRTL/C approved CE compliant
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More info: Dbx 223Xl Crossover W/Xlr
2-input / 4-output Digital Loudspeaker Management processor The DS24 loudspeaker management system features 2 inputs and 4 outputs, and has a 5 band parametric equalizer for each output. Other features included on the DS24’s output section include a high performance limiter, provided with complete control over attack, release and threshold parameters, variable high and low pass filters, with a choice of 12, 18 or 24dB/Octave roll-off, and Butterworth, Bessel or Linkwitz-Riley responses. Independent control of each high and low pass filter allows asymmetric crossover bands to be created. The DS24 can also be controlled from a PC via the DS24’s RS232 connection. Along with XLR input/output connectors, DS24 comes complete with selectable line voltages between 90 and 250 VAC operations. Specifications: 24-bit AD/DA, 48k sampling rate Internal 32-bit DSP processing Parametric EQ provides -40dB to +6dB of gain with frequency,gain and bandwidth adjustment Full limiter for each output 7ms delay per output RS-232 Computer control 5 year warranty
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More info: BBE DS24 2In/4Out Digital Crossover/Spkr Processor
Dual channel 31-band constant-Q equalizer The BBE EQA231 is a high quality dual 31-band graphic equalizer. It is idea for use in live sound rigs and installed setups such as studio, stage, DJ and sound contracting. The EQA231’s logical layout makes it a snap to use; room equalization and sound shaping is a breeze. Its sonic integrity assures clean, distortion free audio. The BBE EQA231 makes state-of-the-art equalization technology affordable, but it much more than a high-quality, superbly engineered EQ. Also included are continuously variable high and low cut filters. The low-cut filter ranges from 10Hz to 250Hz (12dB/octabe). The high-cut filter ranges from 3KHz to 40Hz (12dB/octave). A selectable control range allows musicians to switch easily between 6dB and 12dB on the graphic filters. Along with the TRS and XLR input connectors, EQA 231 comes complete with a Bypass switch, Signal Clip indicator, Output gain control and selectable line voltage switch between 115 and 230 VAC operations. Features: Constant-Q filters Variable low-cut filter from 10Hz to 250Hz (12dB/octave) Variable high-cut filter from 3KHz to 40Hz (12dB/octave) True hard-wire bypass Balanced XLR or TRS input/output connections Clip indicator Line voltage switchable between 115 and 230 VAC operations 5-year warranty
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More info: BBE EQA231 Dual Channel 31 Band Eq
RANE AC 23B Active Crossover The Rane AC 23B Active Crossover can be configured as stereo 2 or 3-way, or mono 4 or 5-way. It features XLR connectors with active balanced inputs and outputs. It also employs 4th-order Linkwitz-Riley filter alignments to minimize phase difficulties in the critical crossover region. Simply put, a Linkwitz-Riley alignment is two cascaded 2nd-order Butterworth filters exhibiting identical phase characteristics on their Low-pass and High-pass outputs. This characteristic guarantees in-phase outputs at all frequencies. In-phase outputs are mandatory for proper acoustic summing of common signals from adjacent drivers in the crossover region. An added benefit of this topology is steep 24 dB per octave rolloff slopes. A slope of this magnitude guarantees drivers designed to produce a specific range of frequencies, and no more, will not be driven past their limits, thereby minimizing distortion and driver fatigue. To further guarantee the transparent operation, adjustable time delay circuits appear on the low and mid outputs of each channel to compensate for any physical misalignment of the drivers. Time correction ensures the mechanical phase alignment of adjacent drivers will be acoustically correct, thus maintaining the integrity of the electrical phase alignment of the crossover’s filters. CD horn equalization is possible with an internal modification. Time delay can also be internally transplanted to the mid and high outputs if desired.
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More info: Rane Stereo 39116 Way Or Mono 39177 Way Crossover
