ART HQ231 - Dual Channel 31-Band Equalizer with 20mm Faders, Feedback Detection Circuitry, LED Energy Indicators, XLR, 1/4" TRS Balanced and RCA Unbalanced Inputs/Outputs
The HQ231 from ART is a dual channel, 31 band graphic equalizer that features FDC (Feedback Detection Circuitry.) The unit also features constant Q circuitry, 45mm center detent sliders with selectable boost or cut range of 6dB or 12dB and connectivity includes XLR, 1/4" and unbalanced RCA input and output connections.
The ART proprietary FDC differs from similar systems in that it is extremely fast and utilizes a set of indicators that show which of the many EQ bands has the greatest energy. 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 function can also act as a simple spectrum viewer.
The rugged, all-steel chassis occupies 2U rack spaces and is intended for installation into standard 19" equipment racks. Applications for the HQ231 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.
- Dual channel, 31-band graphic equalizer
- Constant-Q filtering
- FDC Feedback Detection Circuit
- Individual high and low pass filters on each channel
- Center-detented, 20mm frequency band sliders with selectable range
- Independent level and bypass controls on each channel
- Relay bypass - in the event of power loss to the equalizer, signal will still pass
- Signal clip level indicators
- Ground lift switch
- Internal power supply with selectable line voltage
| Filter Type | Constant - 3% center accuracy |
| Number of Channels | Two |
| Inputs |
2 x XLR 2 x 1/4" TRS phone 2 x RCA phono |
| Outputs |
2 x XLR 2 x 1/4" TRS phone 2 x RCA phono |
| Maximum Input Level | +22dBm |
| Frequency Bands | 2 x 31 |
| Bandwidth | 1/3 octave, ISO spacing |
| Range (Boost/Cut) | +/-6dB o+/-12dB, selectable |
| Maximum Output Level | +22dBm |
| Frequency Response | 20Hz to 20kHz, +/-0.5dB |
| Dynamic Range | Not specified by manufacturer |
| Noise | -94dBm, unweighted |
| Dimensions (WxDxH) | 19" x 7 1/2" x 3 1/2" |
| Weight | 12 lbs |
| Specialties | FDC (Feedback Detection Circuitry) instantly illuminates the EQ band with the greatest signal. |
REVIEW SNAPSHOT®
by PowerReviews(based on 4 reviews)
Ratings Distribution
100%
of respondents would recommend this to a friend.
Pros
- Good audio (3)
Cons
Best Uses
- Reviewer Profile:
- Experienced (3)
REVIEWS
Reviewed by 4 customers
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Displaying reviews 1-4
Pros
- Compact Design
- Excellent Sound Quality
Cons
Best Uses
- Events
- Performances
Comments about ART HQ231 Dual Channel 31-Band Equalizer:
I use the HQ 231 for live sound. I do shows where musicians are playing acoustic instruments using mics and DIs. Mainly I've used the HQ231 to EQ the monitor mixes. I never have feedback problems because the feedback circuit shows if a frequency is really hot and about to feed back. The HI and LOW shelving EQs also are great for dialing in the right frequency for making the HI & Low cuts.
Pros
- Accurate Controls
- Clean Sound
- Easy To Set Up
Cons
Best Uses
- Audiophiles
- Larger Rooms
- Smaller Rooms
Comments about ART HQ231 Dual Channel 31-Band Equalizer:
It's like a Ferrari, looks beautiful and performs great! You have great flexibility from the 31 bands. There is also the flexibility of balanced or unbalance audio. Great product!
Pros
- Clear Sound
- Easy To Use
- Professional Functions
- Versatile
Cons
Best Uses
- Amateur Recording
- Events
- Mobile DJ
- Performances
- Professional Recording
- Soundtracks
Comments about ART HQ231 Dual Channel 31-Band Equalizer:
I bought this for my rackmount home stereo system. Having both balanced (XLR,TRS) and unbalanced (RCA) connectors made it easy to connect.
The +/-12dB gain controls in 31 bands were more than enough to flatten the room response. The 1/3 octave controls really help in smoothing out any sharp notches/peaks.
The FDC is actually quite impressive. It acts as a real-time audio spectrum analyzer in that it instantly shows where (at what frequencies) all the power is going. With no signal, the LEDs are all lit normally. As the signal increases, so does the brightness of the appropriate LEDs, but as the signal gets even greater, the unaffected LEDs then begin to dim. A peak signal results in only a few very bright LEDs. Very effective.
My only complaint is that the FDC cannot be turned off. The visual effect can be so mesmerizing that it actually becomes a distraction during social gatherings!
Pros
- Clear Sound
- Easy To Use
- Powerful
- Professional Functions
- Versatile
Cons
Best Uses
- HQ stereo equalization
Comments about ART HQ231 Dual Channel 31-Band Equalizer:
When I first turned this on, I thought it was defective. Then I moved the sliders up from the zero position and it started to come alive and the sound quality improved constantly over and above what I ever expected. It is a good buy and I am extremely happy with it.
- Similar:
- ART 355 31 band equalizer, AudioControl C101 equalizer
Displaying reviews 1-4
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What's in the Box
- AC Power Cable
- Three (3) Year Warranty
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