Samson D-2500  Digital Graphic Equalizer    The D2500 is a dual channel, 1/3 Octave, 31 Band Digital Graphic Equalizer featuring cutting edge DSP and analog-to-digital conversion technology, together with a simple to use, traditional analog user interface. The D2500’s robust, 2 rack-space steel and aluminum extruded chassis design is not only road worthy, but it also provides a large front panel layout which is extremely easy to use and already familiar to audio engineers. The beauty of the D2500 Graphic Equalizer is that it has 31 bands of real hands-on faders! And, with the high-end 24 Bit AD and DA converters and 96K sampling rate, you’ll enjoy pristine audio quality.  Thanks to the powerful DSP engine and clever software, the D2500 is capable of producing EQ curves with more accurate and precise filters, far exceeding the capabilities of even the best analog equalizers. What you won’t get is the accumulating additive hiss noise that you get from an analog equalizer when you push up the high frequency bands. In addition to being a simple to use digital equalizer, the D2500 is packed with all the goodies including HIGH & LOW PASS FILTER, NOISE GATE, LIMITER, ENHANCER, DELAY and FEED BACK MANAGEMENT. All these digital effects are programmable and their associated parameters can be stored, and recalled, as part of the 99 available user pre-sets.  The HIGH and LOW PASS FILTERS allow you to quickly apply an EQ contour for rolling off the high and low end frequencies, for example, when equalizing vocal monitors. The D2500’s NOISE GATE allows you to set a threshold level in order to mute any system hums and buzzes during silent sections keeping your system super clean. With the D2500’s LIMTER you can control the level that you are sending to your power amplifiers to help you insure good protection for your loudspeakers. The onboard ENHANCER will actually add high frequency to the system when there is program material at those frequencies, adding extra sparkle to the mix. The ENHANCER will also automatically turn down the high frequencies when there is no high frequency signal content, which, by eliminating system noise and hiss, making the D2500 a very effective noise reduction system.  In addition, the D2500 also offers on onboard DELAY for time aligning speakers. Another powerful feature of the D2500 is feedback suppression. The D2500’s feedback management system can be set to AUTO which will automatically find the frequency that’s feeding back and lower the associated filter. Or, you can use the feedback management system in MANUAL mode where the D2500 will automatically find, and then display, the frequency that’s feeding back, showing which fader you should pull down manually. All settings and parameters for the equalizer and digital effects can be stored in 99 pre-set locations. Using the large, easy to read, LCD display and convenient data wheel, it’s possible to save your favorite equalization curves and recall them in the future.  Or, when using the D2500 together with the D 1500 Real Time Analyzer, you can auto-correct the room to a flat response, and then apply your favorite system curve on top. In addition, the powerful LOAD MASK allows you to recall certain effects or EQ curves from any preset independently, so you can add pre-set effects settings with real time changes. The D2500 features standard MIDI implementation and Samson’s D-Net, enabling device-to-device linking for creating larger audio systems, for interfacing to a personal computer. When linking the units you see the full power of the D-class system. With a basic MIDI connection, the fader positions of the D-2500 digital EQ can be displayed the D1500 Real Time Analyzer, giving you the power of digital processing with a unique analog feel. For systems using many D class units, the D2500 can be fitted with the DN1 D-Net network card.  Samson’s D Net is a high-speed communication protocol for connected multiple D class units, like the D2500 digital equalizer, D1500 RTA or D3500 feedback management system. In addition to being 10 times faster than MIDI, the error rate is so close to zero, it’s difficult to measure. All settings and parameters can be stored in any of the 99 preset locations providing instant recall of your favorite setups. Like all D class models, the D2500 features an advanced 32-bit point floating processor DSP interface to high quality converters with 24- bit audio resolution and sample rates up to 96kHz for pristine audio quality. You can even upgrade your D class units to premium Analog-to-Digital and Digital-to-Analog I/O (Input/Output) converter boards, keeping your D class system up to date with the best technology and sound, far into the future.  The D2500 is perfectly at home in the studio or on the road. The fact is, you would use the D2500 equalizer for its precise filtering and superb audio quality alone, but you get the power of all the features, and then some, expected from a high quality digital equalizer. Whether you are a recording or a live sound engineer you’ll get a better sound using the D2500 Digital Equalizer!   Features The D2500 is a stereo or two channel digital equalizer with each channel providing 31 bands of equalization, each frequency band representing 1/3 of an octave, on ISO standards, in the 20 Hz to 20 kHz range. The front panel provides 32 analog 45mm LED faders for instant filter adjustment and true analog feel. Custom Liquid Crystal Display is easy to read and provid es critical paramter information. Advanced 32 bit floating point DSP with high-end, 24 Bit 96K sample rate Analog-to-Digital and Digital-to Analog converters provides a pristine sound quality with low distortion and wide dynamic range. Variable Q Filters with programmable bandwidth (1/4, 1/3 and 1/2 octave) ensures that the filter of the selected frequency area stays the same even when approaching maximum boost or attenuation. Plus, Auto Bandwidth allows individual filters to have different filter cues. As a result, the frequency response of the D2500 will as close as possible to your faders settings. Automated Feedback recognition, indication and suppression (Manual or Auto mode) with Automated Filter Restoration. The D2500’s fader can be set for either 3, 6 or 12 dB of gain and attenuation for each of the frequency bands. An onboard programmable Delay is included for time aligning speakers. The D2500 offers programmable High and Low Pass Filters for setting contour curves or for removing low-end stage rumble. To help keep the over all system noise level low, the D2500 includes a programmable Noise Gate with variable threshold control. An added layer of speaker protection is accomplished by using the D2500’s programmable brick wall Limiter. The programmable Enhancer can be used to add extra highs or as a noise reduction system by lowering the high frequency bands when no high end content is present. Equalization curves plus all digital effects can be stored or recalled using the 99 Preset Locations. Configure larger systems using multiple D class units which communicate over standard MIDI, or with Samson’s optional high-speed D-Net interface card. Electronically balanced XLR inputs and outputs. Internal power supply ensures reliability and trouble-free operation. Standard 19”, 2 rack-space design for easy integration into any traveling or fixed installation audio system. Aluminum extruded front panel and steel chassis makes the D2500 eminently road-worthy.   Specifications Inputs Type: electronically balanced Connector: XLR Impedance: 22 kΩ at 1 kHz Max. input level: +22 AIO1: +14dBu AIO2: +20dBu Outputs Type: electronically balanced Connector: XLR Impedance: 100 Ohms at 1 kHz Max. output level AIO1: +14dBu AIO2: +20dBu Frequency Response 10 Hz to 35 kHz (-1dB) @ 96 kHz sampling rate Signal-to-noise-ratio AIO1: Noise floor (unweighted) < -92 dBFS (-78 dBU) Noise floor (A-weighted) < -100 dBFS (-86 dBU) AIO2: Noise floor (unweighted) < -106 dBFS (-86 dBU) Noise floor (A-weighted) < -112 dBFS (-92 dBU) THD  0.005 % typ. @ +4 dBu, 1 kHz, unity gain Digital Processing Converter: 24-bit Delta-Sigma, 64/128-oversampling Sample rate AIO1 & AIO2 32, 44.1, 48, 64, 88.2, 96 kHz DIO1 96 kHzType digital 31-band equalizer Frequency range: 20 Hz to 20 kHz, 31 bands on ISO standard frequencies Display Type: Custom LCD for parameter control Memory Presets: 100 memory locations, 99 user programable Midi interface Type: 5-pin. DIN jacks In/Out/Thru Power supply Mains voltage: 115 V, 60 Hz, 230 V, 50 Hz Power consumption" 20 W typ. Fuse: T 630mA for 100- 120 Volt / T315mA for 220 - 240 Volt Mains connector: Standard IEC receptacle Dimensions 19 in. (w) x 10.5 (d) x 3.5 (h) 482 mm (w) x 267 (d) x 89 (h) Weight: 5.1 lb.(2.31 kg)   *3 Year Manufacturer's Warranty

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