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ART Pro Audio
Dual 31-Band EQ with 35mm Long-Throw Sliders
This product is no longer available.
The new ART XL 231 Dual 31 Band, 1/3 Octave Extended Long Throw Professional Equalizer has been designed and engineered to exceed extremely high standards for audio performance and functionality. This innovative, high-quality equalizer is perfect for virtually any audio application where precision frequency tailoring, reliable performance, rugged design and extremely silent processing are of the utmost priority.
Active Filter Sections
The XL 231 features active filter sections, which incorporate a constant-Q design. This constant-Q design, with its accurate precision center frequencies, ensures that the bandwidth of every individual filter will be narrow enough to prevent unnecessary interaction between adjacent filters, yet still create an equalization curve wide enough to produce the exact and precise processing of audio frequencies the user seeks. Filter circuitry incorporates high quality low noise components including 1% resistors, and, precision high performance 2% film capacitors.
Enhanced Cut Mode
The XL 231 offers an enhanced cut mode that allows more narrow filters and deeper cut of -18dB. This helps when trying to tame resonance and minimizing overall spectral changes. Only each filter's cut mode is enhanced while their boost characteristic remains unchanged.
Precision Slide Potentiometers
The XL 231 uses 45mm precision slide potentiometers. These center detented, metal shaft precision faders are graphically positioned on ISO center frequencies between 20Hz to 20kHz. The sliders feature a grounded center tap to assure that the filter is out of the circuit when the control is at its center detent.
Hi and Low Trim controls
These unique controls allow a gentle slope to be added, or subtracted from the overall frequency response. Both controls hinge at the middle of the spectrum and allow subtle changes to the overall sound without the need to adjust many sliders. Although similar in concept to tone controls, these differ in their well controlled precision straight curves, and, have less selectivity so the Trim controls don't have a "sound" as a typical tone control will.
Variable Low Cut Filtering
To help keep bass under control, the XL 231 Graphic Equalizer incorporates a variable swept Low Cut filter.
Automatic Relay Bypass
The XL 231 Graphic Equalizer also features automatic relay bypass of audio, an essential function if power to the unit is lost. Rugged construction and solid audio performance make this equalizer particularly well suited to fixed installation as well as touring live sound systems.
Additional Controls and Indicators
The XL 231 Graphic Equalizer includes a variable output level control, 10 segment level bar with peak hold, clip level indicator, and selectable line voltage. Additional features include selectable Scale Switching - (High Slider Resolution 6dB - or Normal Resolution (12dB), active balanced and unbalanced input/output connectors, and RFI filtering. A front panel Bypass switch allows direct comparison between the equalized and non-equalized signal for each channel.
Versatile I/O
The XL-231 Graphic Equalizer may be connected to a wide variety of audio devices. It has three sets of input and output connectors: XLR, 1/4" phone, and detachable Euroblock barrier strip connectors. The inputs are wired in parallel. The XLR and Euroblock output connections are also wired in parallel. A separate output circuit is used for the 1/4" phone output. It provides a balanced connection that results in the same output level when operated with balanced, or unbalanced connections.
Precision and Quality
When considering quality equalization, the XL-231 Graphic Equalizer is an excellent choice. It delivers extremely precise, powerfully flexible and simply great sounding equalization, with the quality features and reliable design criteria necessary for top-level audio performance.
Features:
• Greater than 123dB dynamic range
• Ultra low noise and high output
• 40 Volt internal circuitry for added headroom, and line driving capability
• High and Low frequency "Trim" controls for sweetening overall sound after EQ has been set
• Enhanced Cut Mode: Up to -18dB narrow band dips
• Normal and Enhanced Modes also have Half-Scale modes for a total of 4 Boost/Cut modes
• 10 Segment LED level meters with "Peak-Hold" and clipping indication
• Constant Q design with interleaved filter banks to reduce band interaction
• High precision filters with 2% film capacitors, 1% resistors
• Built-in RFI suppression
• Grounded center-tapped slide potentiometers for true zero flat position
• 45mm metal shaft slide potentiometers with center detents, and mixing desk style knobs
• Automatic relay bypass if power is lost
• Euroblock detachable barrier strips, XLR, and 1/4 inch phone Ring-Tip-Sleeve balanced inputs and outputs
• Toroidal power transformer
EQUALIZER
• Bands: 2 x 31, 1/3 Octave, ISO Spacing
• Type/Accuracy: Constant Q, 3% Center Frequency
• Slide Potentiometers: 45 mm, Positive Center Detent, Metal Shaft, Grounded Center Tap.
• Range: ( 6 dB) or ( 12 dB) Selectable
• w/Enhanced Cut: (+6/-9 dB) or (+12/-18 dB) Selectable
• Overall Gain Range: Off to +6 dB (sliders centered)
INPUTS
• Type: Active Balanced
• Connectors: 3-Pin XLR, TRS phone, Euroblock
• Impedance: 9.4K Ohms Balanced.
• Maximum Input Level: +24 dBu, Balanced,≤ THD, [EQ and Level centered]
OUTPUTS
• Type: 3-Pin XLR, Euroblock - Active BalancedTRS phone - Impedance Balanced
• Connectors: 3-Pin XLR, TRS phone, Euroblock
• Impedance: ≤200 OhmsMaximum Level +26 dBu, Balanced, 20-20K Hz, into≥600 Ohms,≤1% THD
• Maximum Level: +26 dBu, Balanced
• RFI Input Filters: Yes
• Bypass Switching: Passive, Relay
• Clip LED Threshold: 3 dB below clipping. Sensed at all gain stages.
• High Pass Filter: 10 to 250 Hz 12dB/Oct
• High Trim: 4 dB @ 10 KHz
• Low Trim: 4 dB @ 40 Hz
• Frequency Response: [EQ and Level centered, HPF fully counter clockwise](+0/-0.25 dB 20-20K Hz), (+0/-1 dB17-50K Hz), (+0/-3 dB 10-80K Hz)
• THD+Noise: < 0.005%, @ +4 dBu, 20-20KHz, 22 KHz BW, [EQ and Level centered]
(typically 0.003% @ 1 KHz)
• IM Distortion (SMPTE): < 0.004%, @+4 dBu, [EQ and Level centered]
• Signal to Noise Ratio: ≥99 dB, Ref. 0 dBu, 22 KHz BW, unweighted, [EQ and Level centered]
• Headroom: +24 dB, Ref. 0 dBu
• Dynamic Range: ≥123 dB, Ref: +24 dBu, 22 KHz BW
• Channel Separation: ≥90 dB @ 1 KHz, +4 dBu
• Common Mode Rejection: ≥60 dB @ 1 KHz
• line Voltage: 95-125 VAC 50/60 Hz, 190-250 VAC 50/60 Hz
• Input AC Power: 31 Watts Typical
• Construction: All Steel Chassis Aluminum Front Panel
• SIZE: 5.25 x 19 x 8 Inches 133 x 483 x 203 mm
• WEIGHT: 12 lbs. (5.4 kg)
Active Filter Sections
The XL 231 features active filter sections, which incorporate a constant-Q design. This constant-Q design, with its accurate precision center frequencies, ensures that the bandwidth of every individual filter will be narrow enough to prevent unnecessary interaction between adjacent filters, yet still create an equalization curve wide enough to produce the exact and precise processing of audio frequencies the user seeks. Filter circuitry incorporates high quality low noise components including 1% resistors, and, precision high performance 2% film capacitors.
Enhanced Cut Mode
The XL 231 offers an enhanced cut mode that allows more narrow filters and deeper cut of -18dB. This helps when trying to tame resonance and minimizing overall spectral changes. Only each filter's cut mode is enhanced while their boost characteristic remains unchanged.
Precision Slide Potentiometers
The XL 231 uses 45mm precision slide potentiometers. These center detented, metal shaft precision faders are graphically positioned on ISO center frequencies between 20Hz to 20kHz. The sliders feature a grounded center tap to assure that the filter is out of the circuit when the control is at its center detent.
Hi and Low Trim controls
These unique controls allow a gentle slope to be added, or subtracted from the overall frequency response. Both controls hinge at the middle of the spectrum and allow subtle changes to the overall sound without the need to adjust many sliders. Although similar in concept to tone controls, these differ in their well controlled precision straight curves, and, have less selectivity so the Trim controls don't have a "sound" as a typical tone control will.
Variable Low Cut Filtering
To help keep bass under control, the XL 231 Graphic Equalizer incorporates a variable swept Low Cut filter.
Automatic Relay Bypass
The XL 231 Graphic Equalizer also features automatic relay bypass of audio, an essential function if power to the unit is lost. Rugged construction and solid audio performance make this equalizer particularly well suited to fixed installation as well as touring live sound systems.
Additional Controls and Indicators
The XL 231 Graphic Equalizer includes a variable output level control, 10 segment level bar with peak hold, clip level indicator, and selectable line voltage. Additional features include selectable Scale Switching - (High Slider Resolution 6dB - or Normal Resolution (12dB), active balanced and unbalanced input/output connectors, and RFI filtering. A front panel Bypass switch allows direct comparison between the equalized and non-equalized signal for each channel.
Versatile I/O
The XL-231 Graphic Equalizer may be connected to a wide variety of audio devices. It has three sets of input and output connectors: XLR, 1/4" phone, and detachable Euroblock barrier strip connectors. The inputs are wired in parallel. The XLR and Euroblock output connections are also wired in parallel. A separate output circuit is used for the 1/4" phone output. It provides a balanced connection that results in the same output level when operated with balanced, or unbalanced connections.
Precision and Quality
When considering quality equalization, the XL-231 Graphic Equalizer is an excellent choice. It delivers extremely precise, powerfully flexible and simply great sounding equalization, with the quality features and reliable design criteria necessary for top-level audio performance.
Features:
• Greater than 123dB dynamic range
• Ultra low noise and high output
• 40 Volt internal circuitry for added headroom, and line driving capability
• High and Low frequency "Trim" controls for sweetening overall sound after EQ has been set
• Enhanced Cut Mode: Up to -18dB narrow band dips
• Normal and Enhanced Modes also have Half-Scale modes for a total of 4 Boost/Cut modes
• 10 Segment LED level meters with "Peak-Hold" and clipping indication
• Constant Q design with interleaved filter banks to reduce band interaction
• High precision filters with 2% film capacitors, 1% resistors
• Built-in RFI suppression
• Grounded center-tapped slide potentiometers for true zero flat position
• 45mm metal shaft slide potentiometers with center detents, and mixing desk style knobs
• Automatic relay bypass if power is lost
• Euroblock detachable barrier strips, XLR, and 1/4 inch phone Ring-Tip-Sleeve balanced inputs and outputs
• Toroidal power transformer
EQUALIZER
• Bands: 2 x 31, 1/3 Octave, ISO Spacing
• Type/Accuracy: Constant Q, 3% Center Frequency
• Slide Potentiometers: 45 mm, Positive Center Detent, Metal Shaft, Grounded Center Tap.
• Range: ( 6 dB) or ( 12 dB) Selectable
• w/Enhanced Cut: (+6/-9 dB) or (+12/-18 dB) Selectable
• Overall Gain Range: Off to +6 dB (sliders centered)
INPUTS
• Type: Active Balanced
• Connectors: 3-Pin XLR, TRS phone, Euroblock
• Impedance: 9.4K Ohms Balanced.
• Maximum Input Level: +24 dBu, Balanced,≤ THD, [EQ and Level centered]
OUTPUTS
• Type: 3-Pin XLR, Euroblock - Active BalancedTRS phone - Impedance Balanced
• Connectors: 3-Pin XLR, TRS phone, Euroblock
• Impedance: ≤200 OhmsMaximum Level +26 dBu, Balanced, 20-20K Hz, into≥600 Ohms,≤1% THD
• Maximum Level: +26 dBu, Balanced
• RFI Input Filters: Yes
• Bypass Switching: Passive, Relay
• Clip LED Threshold: 3 dB below clipping. Sensed at all gain stages.
• High Pass Filter: 10 to 250 Hz 12dB/Oct
• High Trim: 4 dB @ 10 KHz
• Low Trim: 4 dB @ 40 Hz
• Frequency Response: [EQ and Level centered, HPF fully counter clockwise](+0/-0.25 dB 20-20K Hz), (+0/-1 dB17-50K Hz), (+0/-3 dB 10-80K Hz)
• THD+Noise: < 0.005%, @ +4 dBu, 20-20KHz, 22 KHz BW, [EQ and Level centered]
(typically 0.003% @ 1 KHz)
• IM Distortion (SMPTE): < 0.004%, @+4 dBu, [EQ and Level centered]
• Signal to Noise Ratio: ≥99 dB, Ref. 0 dBu, 22 KHz BW, unweighted, [EQ and Level centered]
• Headroom: +24 dB, Ref. 0 dBu
• Dynamic Range: ≥123 dB, Ref: +24 dBu, 22 KHz BW
• Channel Separation: ≥90 dB @ 1 KHz, +4 dBu
• Common Mode Rejection: ≥60 dB @ 1 KHz
• line Voltage: 95-125 VAC 50/60 Hz, 190-250 VAC 50/60 Hz
• Input AC Power: 31 Watts Typical
• Construction: All Steel Chassis Aluminum Front Panel
• SIZE: 5.25 x 19 x 8 Inches 133 x 483 x 203 mm
• WEIGHT: 12 lbs. (5.4 kg)
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Rental rates
This product is normally available for rental. Please contact your preferred location for further information.
1 Day from $10.00
1 Week $20.00
1 Month $40.00
Protect your investment with the Long & McQuade Performance Warranty
A warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.
Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.
How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?
- Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
- Product Replacement: If your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.
- No Lemon Policy: Your product will be replaced should the same problem occur multiple times.
- Convenient: Easy drop off and pick up of the product at any Long & McQuade location.
- Guitar Setup: Guitars purchased at Long & McQuade come with 1 free setup, to be redeemed within 1 year for new guitars and 90 days for used guitars.
- Loaners Available: A loaner product may be given while the product is being repaired.
- Power Surge Protection: Your product is covered even if damaged from a power surge.
- Accessory Coverage: Any peripheral devices or accessories that come with your product (i.e. foot pedal, case) are also covered.
- Commercial Use Coverage: Music and recording professionals who purchase gear for “heavy-use” commercial purposes will still be covered.
Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty. Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Cosmetic Damage, Accidental Damage, or problems caused by Humidity or Temperature Issues are not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.
Purchasing additional years of coverage
Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.
If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:
- NEW products: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
- USED products: 4% of the current new selling price to increase the warranty from 3 months to 1 year. 4% for each additional year.
- GUITARS: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year. $45 maximum. An additional free setup is not included with additional purchased years of Performance Warranty.
- BAND and ORCHESTRAL instruments: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
Great Additions
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| Product | SKU | Qty |
|---|---|---|
| Dual 31-Band EQ with 35mm Long-Throw Sliders | 230930 |
