® 231 Dual Channel 31-Band Graphic Equalizer With a lineage extending back to the revered 12 and 20 Series graphic equal- izers, the dbx 231 easily lives up to the dbx reputation at a price point which can find a home in the tightest of budgets. Besides including two 31-band channels of 1/3-octave equalization, the 231 also offers +12 dB input gain range; switchable +6 or +12 dB boost/cut range; XLR, 20mm faders and 1/4'' inputs; nonconductive nylon sliders; and an intuitive user interface with com- prehensive output and gain reduction metering. As always, the inevitable result of our meticulous attention to detail and top-quality componentry is excep- tional sound, performance, and reliability. The 2-Series represents a major step forward in the performance of entry-level graphic equalizers. From its amazing 10Hz to 50kHz frequency response, to its 108dB dynamic range and internal toroidal transformer, the 2-Series offers out of this world specifications with a down to earth price point. Sure to find a home in the studio, on tour and with installed sound venues, the 2-Series is des- ® tined to take its rightful place in the lineage of great dbx signal processors that are the Professional’s Choice™. With such affordable quality, there’s no longer any excuse for compromising your sound. • Two 31-band, 1/3-octave • XLR and TRS Inputs and Constant Q frequency bands Outputs • Switchable boost/cut ranges • Internal Toroidal of ±6 or ±12 dB Transformer • 12dB per octave 40Hz • Frequency Response of <10 low-cut filter Hz to >50kHz • Front panel bypass switch • Dynamic range of greater than 108dB • ±12 dB input gain range • 4-segment LED ladders for 8760 S. Sandy Pkwy. monitoring output levels 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 18-0111-A 7/02 231 Dual Channel 31-Band Graphic Equalizer Inputs THD+Noise: <0.004% Connectors: 1/4" TRS, female XLR (pin 2 hot) Interchannel Crosstalk:<-80dB, 20Hz to 20kHz Type: Electronically balanced/unbalanced, RF filtered Impedance: Balanced 40kΩ, unbalanced 20kΩ Function Switches Max Input Level: >+21dBu balanced or unbalanced EQ Bypass: Bypasses the graphic equalizer section in the signal path CMRR: >40dB, typically >55dB at 1kHz Low Cut: Activates the 50Hz 12dB/octave high-pass filter Range: Selects either +/- 6dB or +/- 12dB slider boost/cut range Outputs Connectors: 1/4" TRS, male XLR (pin 2 hot) Type: Impedance-balanced/unbalanced, RF filtered Impedance: Balanced 100Ω, unbalanced 50Ω Power Supply Max Output Level: >+21dBu balanced/unbalanced into 2kΩ or greater Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz, 230VAC 50/60Hz >+18dBm balanced/unbalanced (into 600Ω) Power Consumption: 15W Mains Connection: IEC receptacle System Performance Bandwidth: 20Hz to 20kHz, +0.5/-1dB Frequency Response: <10Hz to >50kHz, +0.5/-3dB Note: Specifications subject to change. Dynamic Range: 108db Signal-to-Noise: 90db dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice. FOR MORE INFORMATION CONTACT: dbx Professional Products 8760 S. Sandy Pkwy. Sandy, Utah 84070 Phone (801) 568-7660 Fax (801) 568-7662 customer@dbxpro.com http://www.dbxpro.com The Professional’s Choice In Signal Processing A Harman International Company