® It’s amazing. One little button. So much effect. dbx Type III Noise Reduction is an entirely new con- cept... 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 your- self 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 rowdi- est 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 pow- erful 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!!! • Revolutionary instant encode/decode • Four segment LED bargraph for Type III Noise Reduction in-circuit at BOTH Gain Reduction AND Output the push of a button. Increases S/N Level offers the most comprehensive ratio by up to 20dB. visual feedback available. • Patent-pending PeakPlus™ Limiter • Status LEDs offer visual feedback for threshold range from 0dBu to all settings on the front panel. +24dBu (off) can transparently tame the wildest hits or the subtlest nuances of any signal. 8760 S. Sandy Pkwy. Stereo Compresssor / Sandy, Utah 84070 160SL • An extremely high quality EQ, patent- Phone (801) 568-7660 Fax (801) 568-7662 pending TYPE III Noise Reduction, Limiter with Int’l Fax (801) 568-7583 and the elegant new PeakPlus™ customer@dbxpro.com http://www.dbxpro.com Limiter all in one great sounding box. AutoVelocity™ A Harman International Company 18-1719-B 01/99 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k 6.3k 8k 10k 12.5k 16k 20k -10 0 +10 +18 10 6 3 1 +6 +15 OUTPUT GAIN LEVEL (dBu) REDUCTION (dB) CLIP +/-15 0 +10 +15 2031 +/-6 0 0 Equalizer/Limiter +5 +20 with TYPE III NR -12 +12 0OFF dB dBu TYPE III EQ INPUT LOW PeakPlus RANGE NR BYPASS GAIN CUT THRESHOLD -6 -15 2031 SINGLE CHANNEL 31 BAND EQUALIZER / LIMITER WITH TYPE III NOISE REDUCTION 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k 6.3k 8k 10k 12.5k 16k 20k -10 0 +10 +18 10 6 3 1 +6 +15 OUTPUT GAIN LEVEL (dBu) REDUCTION (dB) CLIP +/-15 Dual Vacuum Tube Preamp 0 +10 +15 2031 586 +/-6 0 0 Equalizer/Limiter +5 +20 with TYPE III NR -12 +12 0 OFF dB dBu TYPE III EQ INPUT LOW PeakPlus RANGE NR BYPASS GAIN CUT THRESHOLD -6 -15 TYPE IV™ Conversion System 704 OUTPUT INPUT CHANNEL 1 CAUTION: T O REDUCE THE RISK OF FIRE REPLACE RISK OF ELECTRIC SHOCK OUTPUT INPUT POWER OUTPUT INPUT ONLY WITH SAME TYPE FUSE. DO NOT OPEN + - - + ATTENTION: UTILISER ATTENTION: RISQUE DE CHOC ELECTRIQUE - NE PA S OUVRIR UN FUSIBLE DE RECHANGE DE CONNECTOR POLARITY WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC MEME TYPE. SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE PHONE: XLR: TIP PIN 1 RING PIN 2 SLEEVE PIN 3 24 WATTS OUTPUT CHANNEL 2 INPUT OUTPUT INPUT PROFESSIONAL PRODUCTS OUTPUT INPUT A HARMAN INTERNATIONAL + - - + COMPANY MODEL 2215 MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING EQUALIZER/LIMITER WITH U.S. PATENTS: 4,234,804 4,316,107 4,329,598 4,331,931 4,377,792 TYPE III NOISE REDUCTION 4,403,199 4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793 OTHER PATENTS PENDING 100V 50/60Hz 120V 60Hz The graphic equalizer shall be a mono 31-band type with frequency centers on standard Inputs Function Switches ISO one-third octave frequencies ranging from 20Hz to 20kHz. The boost/cut range Connectors: 1/4” TRS, female XLR (pin 2 hot), and Type III NR: Activates dbx Type III Noise Reduction barrier terminal strip EQ Bypass: Bypasses the graphic equalizer section shall be switchable via a recessed front panel switch to either +/-6dB or +/-15dB and the Type: Electronically balanced/unbalanced, RF in the signal path selected range shall be indicated on the front panel by either of two LEDs. Low-noise filtered Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel equalization sliders having a 45mm travel shall be utilized having center detents at 0dB. Impedance: Balanced 40kΩ, unbalanced 20kΩ high-pass filter The equalizer shall have a front panel 41-detent rotary input gain control having a +/- Max Input Level: >+21dBu balanced or unbalanced Range (recessed): Selects either +/- 6dB or +/- 15dB slider 15dB range. Bypassing the equalizer section of the signal path shall be accomplished CMRR: >40dB, typically >55dB at 1kHz boost/cut range via a front-panel switch having a corresponding LED to indicate when it is bypassed. A Outputs Indicators 40Hz low-cut Bessel filter with 18dB/octave slope shall be insertable in the signal path Connectors: 1/4” TRS, male XLR (pin 2 hot), and bar- Output Level Meter: 4-LED bar graph (Green, Green, Yellow, via a front panel recessed switch and shall have an LED to indicate when the filter is rier terminal strip Red) at -10, 0, +10, and +18dBu active. Type: Impedance-balanced/unbalanced, RF fil- Gain Reduction Meter: 4-LED bar graph (all Red) at 0, 3, 6, and tered 10dB The graphic equalizer shall incorporate dbx Type III™ Noise Reduction providing up to Impedance: Balanced 200Ω, unbalanced 100Ω Type III NR Active: Yellow LED 20dB of broadband noise reduction, having a front panel switch to enable the noise Max Output Level: >+21dBu balanced/unbalanced into 2kΩ EQ Bypass: Red LED reduction and an LED to indicate when it is active. The equalizer shall also be equipped Stereo Compresssor / or greater Clip: Red LED with a dbx PeakPlus™ limiter system having a front panel 41-detent rotary limiter >+18dBm balanced/unbalanced (into Low Cut Active: Red LED threshold control varying from 0 to +24dBu (off) and a four-LED gain reduction bar 160SL 600Ω) +/-6dB range: Yellow LED +/-15dB range: Red LED graph calibrated to read 0, 3, 6, and 10dB. Output level shall be monitored on a four- LED peak-reading bar graph calibrated to read -10, 0, +10, and +18dBu. System Performance Limiter with Power Supply Electronically balanced/unbalanced inputs shall include 1/4" TRS, female XLR, and Bandwidth: 20Hz to 20kHz, +/-0.5dB Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz Frequency Response: <10Hz to >50kHz, +0.5/-3dB screw terminal barrier strip, while servo-balanced/unbalanced outputs shall include 1/4" 230VAC 50/60Hz TRS, male XLR, and screw terminal barrier strip shared with the input. A circuit/chas- Power Consumption: 12W Noise Reduction In (+/-6 and +/-15dB range): sis ground lift jumper shall be strapped across circuit ground and chassis ground screw Mains Connection: IEC receptacle AutoVelocity™ Signal-to-Noise: >102dB, unweighted, ref: +4dBu, 22kHz terminals and shall be removable by the user. Inputs shall be electronically measurement bandwidth Physical balanced/unbalanced and RF filtered having a nominal input impedance not less than Dynamic Range: >120dB, unweighted Dimensions: 3.5" H X 19" W X 7.9" D (8.9cm x 40kΩ balanced and 20kΩ unbalanced, and shall accept maximum signal levels of not Noise Reduction Out: (+/-6dB range): 48.3cm x 20.1cm) less than +21dBu. Outputs shall be servo-balanced/unbalanced and RF filtered having a Signal-to-Noise: >94dB, unweighted, ref: +4dBu, 22kHz Weight: 8.5 lbs. (3.9 kg) nominal output impedance of not more than 200Ω balanced and 100Ω unbalanced, and measurment bandwidth Shipping Weight: 9.5 lbs. (4.3 kg) shall be capable of driving not less than +21dBu into 2kΩ or greater and not less than Dynamic Range: >112dB, unweighted +20dBm (into 600Ω) continuously. Noise Reduction Out: (+/-15dB range): Frequency response shall be better than 10Hz to 50kHz, +0.5/-3dB. Signal-to-noise ratio Signal-to-Noise: >90dB, unweighted, ref: +4dBu, 22kHz Note: Specifications subject to change. shall be greater than 90dB, referenced to +4dBu, in either boost/cut range with noise measurement bandwidth reduction disabled and shall be greater than 102dB with noise reduction enabled. Dynamic Range: >108dB, unweighted THD+Noise: <0.04%, 0.02% typical at +4dBu, 1kHz THD+Noise shall be less than 0.04% with a 1kHz signal at +4dBu. Noise Reduction: Up to 20dB of dynamic broadband noise The internal power supply shall be constructed using a thermally-fused transformer reduction mounted in a low hum orientation and shall be magnetically isolated from equalizer cir- cuitry by means of a mu-metal shield. The power cord shall be detachable from an inter- national standard IEC 320 power inlet receptacle. Unit shall be constructed to meet or exceed all applicable international safety and regulatory agencies. Domestic unit shall be powered from 100VAC 50/60Hz, 120VAC 60Hz, while international unit shall be powered from 230VAC 50/60Hz. Unit shall consume no more than 12W. Housing shall be of all steel/aluminum construction and shall be rack-mountable in an IEC standard 19” rack and shall occupy a 2U (3.5") rack space. The unit shall be a dbx 2031 Equalizer/Limiter with Type III Noise reduction. FOR MORE INFORMATION CONTACT: dbx engineers are constantly working to improve the quality of our products. Specifications are, there- dbx Professional Products fore subject to change without notice. 8760 S. Sandy Pkwy. Sandy, Utah 84070 Phone (801) 568-7660 Fax (801) 568-7662 ® Int’l Fax (801) 568-7583 customer@dbxpro.com http://www.dbxpro.com A Harman International Company