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The newest member of the HQ SERIES: HQ 231. features ART?s FDC? Feedback Detection Circuitry.
The A R T proprietary FDC differs from similar systems in that it is extremely fast. Although it illuminates
the band with the greatest energy with the brightest LED, it doesn't fully discriminate between bands
and will not get "stuck" on one band when there is no signal.
The HQ 231 utilizes a set of indicators that show which of the many EQ bands has the greatest energy.
The LED indicators can immediately show which band corresponds to the feedback frequency, allowing
the sound engineer to reduce gain in that band to quickly kill the feedback while having a minimal impact
on the sound of the live program material. The FDC also acts as a simple spectrum viewer while the concert
proceeds showing where the ?hot? areas are. During system setup and sound check, the FDC may be used
to help identify room and sound system resonances. By increasing the gain until feedback, it is easy to
identify those frequencies that are likely to be problems. Reducing the gain in these bands helps tune the
sound system, and, remove problem areas before the show begins. It also helps increase the gain margin
before feedback.
The unit also features constant Q circuitry, 45mm center detent sliders with selectable boost or cut range
of 6dB or 12dB, balanced XLR, Ό? and unbalanced RCA input and output connections, high and low pass
filters, analog level metering, variable input controls, signal clip level indicators, ground lift switch, internal
power supply and selectable line voltage. The rugged, all-steel chassis occupies 2U rack spaces and is
intended for installation into standard 19? equipment racks.
Applications for the HQ-231 include Live Sound Systems/PA, Permanent or Fixed Installations, Church,
Club and Practice PA Systems, DJ Sound Systems, Home and Project Recording Systems, and Monitor Systems.
HQ231 - Pro Dual 31 Band EQ w/ FDC? Features:
FDC? Feedback Detection Circuit
Dual Channel 31-Band Graphic Equalizer
Output Level VU Metering on Each Channel
Constant-Q Filtering
Individual High and Low Pass Filters on Each Chanel
Center-Detented Frequency Band Sliders
Independent Level and Bypass Controls on Each Channel
Relay Bypass - If Power is Lost, Signal Will Still Pass
Occupies 2 Rack Spaces
Variable Input Controls
Signal Clip Level Indicators
Ground Lift Switch
Internal Power Supply
Selectable Line Voltage | High-Definition 31-Band Stereo Graphic Equalizer with FBQ Feedback Detection System
- Professional 31-band stereo graphic equalizer for live and studio applications
- Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
- Ultra-low noise 4580 operational amplifiers for highest signal integrity
- Dedicated mono subwoofer output with adjustable crossover frequency
- Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc.
- Highly accurate 12-segment LED input/output metering and input gain controls for easy level setting
- Relay-controlled hard-bypass with an auto-bypass function during power failure (fail-safe relay)
- Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
- “Planet Earth" switching power supply for maximum flexibility (100
- 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
- 3-Year Warranty Program*
- Conceived and designed by BEHRINGER Germany
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DBX 2215 Dual 15-Band Graphic Equalizer with Noise Reduction
It's amazing. One little button. So much effect. dbx? Type III? Noise Reduction is an entirely new concept... virtually instantaneous encode/decode within the circuitry of the box. We started out to build the finest EQs possible, boxes with the heritage and performance to rival our famous 30 Series EQs. And to no one's surprise they came out awfully darn good. (Ask to see the Audio Precision plots compared to the competition.) But then, Roger (our chief engineer, a nice guy, as far as engineers go) got the crazy idea of putting this new noise reduction stuff in the box. We listened to it and were amazed. The EQs sounded great without it but with it the performance was nothing short of incredible. Check it out yourself and see.
But hey, Roger wasn't about to stop there. PeakPlus? Limiter. Who knows more about limiting than the folks at dbx; nobody... that's who. So when the guys were developing this new series of EQs they wanted something that would be unique to these EQs. That's when Roger got another one of his bright ideas and said "I bet they'll work a lot better if there's a cool limiter built in." Next thing you know, all the guys are in the studio amazed at the new limiter Roger had designed specially for the 20 Series. Once again, hearing is believing... With a threshold range of 0dbu to plus 20dbu, the patent-pending PeakPlus limiter is designed to tame your program material from the subtlest nuances to the rowdiest hits. Also, the four stage LED ladder gives you a great visual indication as to what the limiter is doing.
20 Series EQs. You used to have to settle for second best in a reasonably priced EQ but not any more. With the new 20 Series from dbx Professional Products you get a great EQ circuit, a graceful yet powerful limiter and the revolutionary new design of the Type III Noise Reduction. Check out the dbx 20 Series graphic EQs at your pro audio outfitter. You'll see, with the 20 Series EQs you get MORE!!!
SPECIFICATIONS:
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INPUT
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Connectors:
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1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip
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Type:
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Electronically balanced/unbalanced, RF filtered
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Impedance:
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Balanced 40k ohm, unbalanced 20k ohm
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Max Input Level:
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>+21dBu balanced or unbalanced
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CMRR:
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>40dB, typically >55dB at 1kHz
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OUTPUTS
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Connectors:
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1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip
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Type:
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Impedance-balanaced/unbalanced, RF filtered
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Impedance:
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Balanced 200 ohm, unbalanced 100 ohm
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Max Output Level:
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>+21dBu balanced/unbalanced into 2k or greater
>+18dBm balanced/unbalanced (into 600)
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SYSTEM PERFORMANCE
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Bandwidth:
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20Hz to 20kHz, +/-0.5dB
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Frequency Response:
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50kHz, +0.5/-3dB
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Noise Reduction In:
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(+/-6 and +/-15dB range):
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Signal-to-Noise:
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>102dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
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Dynamic Range:
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>120dB, unweighted
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Noise Reduction Out:
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(+/-6dB range):
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Signal-to-Noise:
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>94dB, unweighted, ref: +4dBu, 22kHz measurment bandwidth
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Dynamic Range:
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>112dB, unweighted
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Noise Reduction Out:
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(+/-15dB range):
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Signal-to-Noise:
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>90dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
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Dynamic Range:
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>108dB, unweighted
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THD + Noise:
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| | INPUT
Connectors: 1/4" TRS, female XLR (pin 2 hot)
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced 40k ohm, unbalanced 20k ohm
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-balanaced/unbalanced, RF filtered
Impedance: Balanced 100 ohm, unbalanced 50 ohm
Max Output Level: >+21dBu balanced/unbalanced into 2k ohm or greater
>+18dBm balanced/unbalanced (into 600 ohm)
SYSTEM PERFORMANCE
Bandwidth: 20Hz to 20kHz, +0.5/-1dB
Frequency Response: 50kHz, +0.5/-3dB
Dynamic Range: Typicall >112dB
Signal-to-Noise: Typically >95dB
THD+Noise: |
- Professional 15-band stereo graphic equalizer for live and studio applications
- Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
- Ultra-low noise 4580 operational amplifiers for highest signal integrity
- Dedicated mono subwoofer output with adjustable crossover frequency
- Additional low-cut filter removes unwanted frequencies, e.g. floor rumble
- Highly accurate 4-segment LED output metering and input gain controls for easy level setting
- Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
- “Planet Earth" switching power supply for maximum flexibility (100
- 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
- 3-Year Warranty Program*
- Designed and engineered in Germany
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* 2 channel 15 2/3 octave band graphic equalizer
* 25Hz - 16kHz frequency control * Constant Q circuitry
(3% frequency accuracy) * Selectable 6dB or 12dB control
* Variable level control * By-pass switch * Overload threshold LED (5dB below clipping) * Ground lift switch * XLR & 1/4" TRS balanced Inputs/Outputs * Power: Selectable 120V/220V voltage
* Dimensions: 1.75" H x 19" W x x 8.5" D / 44.5mm x 483mm x 216mm - 1 space r.m. * Weight: 4.5 lbs. / 2.5kg
XEQ-152 Specifactions:
* Input type: Active balanced / Unbalanced * Output Impedance: |
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