DP428
The DP428 is XTA’s most advanced speaker management system. With 4x8 matrix flexibility and 48dB crossover slopes, sophisticated tools are close at hand. An array of filters types are available including parametric, shelving, bandpass, notch, and elliptical. Phase on all inputs and outputs is adjustable in 2 degree steps. AES/EBU inputs and outputs are built-in and easily selectable. Two stages of limiting insure safety further down the audio chain. 96kHz/24-bit internal processing is on board for pristine audio quality. The DP428 puts XTA’s transparent algorithms to work in a compact 1U package that remains easy to use.
The DP428 is a powerful DSP based audio processor, ideally suited for install applications, where it combines the functions of a multitude of conventional products in a compact 1U unit with extensive remote control capabilities. To achieve this, the DP428 has four inputs and eight outputs which can be configured in a selection of basic crossover modes – 4 x 2 way 2 x 3 way + 2 Aux 2 x 4 way and 1 x 8 way. It also offers a “free assign” mode, which allows completely flexible routing of any output from any combination of inputs.
Each input has a gain control, variable delay, a 28 band graphic equaliser and a further eight bands of fully parametric equalisation. The parametric filter bands have a large selection of different filter types available, including shelving, notch, band-pass, phase and elliptical behaviours.
Each output has a gain control, variable delay, high and low pass crossover filters, nine bands of fully parametric equalisation, polarity switching and, additionally, a fully featured limiter, and a final clip limiter. The crossover filters offer slopes of up to 48dB/Octave., with a variety of responses available.
The DP428 is also equipped with AES/EBU digital inputs and outputs, and includes a sample rate converter, capable of accepting anything from 32 kHz up to 192 kHz.
It may be controlled externally by XTA’s proprietary Windows software, along with existing and future ‘Audiocore’ products.
The DP428 features superb audio quality – carefully optimised double precision signal processing coupled with 24 bit conversion ensure a dynamic range in excess of 117dB. The high sampling rate of 96 kHz means minimal filtering providing exceptional sonic purity with a bandwidth in excess of 32 kHz.
A flexible 4-input/8-output multi-mode format caters for any configuration, regardless of scale.
Both routing of inputs to outputs, and ganging (for editing) are completely flexible.
A completely new SHARCTM based DSP platform supplies phenomenal computational power, allowing the unit to provide not only multiple bands of standard parametric equalisation on every input and output, but an additional full spectrum graphic equaliser on each of the four inputs. This additional power also permits both program limiters and no overshoot clip limiters on each output.
Delay of up to 650mS may be independently set for each output, with an exceptionally fine minimum increment of 300nS, which corresponds to a distance change of 0.1mm
The comprehensive standard specification also includes up to 255 memories, and remote control via MIDI, RS232 or RS485 ports, with security lockout.
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Used XTA Electronics
XTA Electronics is a leading professional audio company based in the UK. We design and manufacture professional audio equipment used extensively around the world in both live touring and installed applications.From humblest beginnings in a spare room in Worcestershire, to the million pound facility of the present, the XTA story is far from ordinary.Have a read through our history and find out how it all began, with a mic splitter, right up to the present day with our range state of the art digital signal processing.
Andrew Grayland and John Austin former R&D manager and one of the Technical Directors of Klark Teknik started XTA in 1992. Having overseen many of the benchmark products produced by KT, both Andrew and John felt that DSP (digital signal processing) technology could find a home at the heart of PA systems.
At this time DSP was often disregarded because of its audio quality, but Andrew and John felt with the right algorithms and using 32-bit processing coefficients instead of 24-bit – what the majority of DSP designs were using – digital equipment could be designed that would sound very pure and clear.
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Octave: The difference between two frequencies where one is twice the other. For example, 200 Hz is an octave higher than 100 Hz. 400 Hz is one octave higher than 200 Hz.
Optical Digital Cable: Fiber optic cable that transfers digital audio signals as light pulses.
Outcue/Outq/Out-Point: These words all refer to the final few seconds of audio signifying the conclusion of the production.
Package: A completed and fully edited audio piece.
Passive: Not active. A passive crossover uses no external power and results in insertion loss. A passive speaker is one without internal amplification.
Phase: Time relationship between signals it’s all relative.
Power Output: A measure, usually in watts, of how much energy is modulated by a component.
Preamplifier: A control and switching component that may include equalization functions. The preamp comes in the signal chain before the amplifiers.
Pre Outs: Connectors that provide a line-level output of the internal preamp or surround processor.
Pre Outs/Main Ins: Connectors on a receiver that provide an interruptible signal loop between the output of the internal preamp or surround processor portion of the receiver and the input of the amplifier portion of the receiver.
Pre/Pro: A combination preamp and surround processor.
Processors: Anything that processes an incoming signal in some way. Surround processors, for example, can decode a Dolby Digital signal to send to an amp so you can hear it.
Pulse Code Modulation: (PCM) a way to convert sound or analog information to binary information (0s and 1s) by taking samples of the sound and record the resulting number as binary information. Used on all CDs, DVD-Audio, and just about every other digital audio format. It can sometimes be found on DVD-Video.
Q-and-A: Question and answer session.
Receiver: Any component that receives, or tunes, broadcast signals, be it NTSC, HDTV, DBS, or AM/FM radio. Typically refers to the single component that includes a preamp, surround processor, multichannel amplifier, and AM/FM tuner.
Reverberation: The reflections of sound within a closed space.
RF: Radio Frequency. Television signals are modulated onto RF signals and are then demodulated by your television’s tuner. VCRs and DBS receivers often include channel 3 or 4 modulators, allowing the output signal to be tuned by the television on those channels. Also, laser discs used an RF signal for modulating Dolby Digital 5.1 soundtracks on some movies. This requires an RF demodulator (usually referred to as an AC3-RF demodulator) before or in the surround processor to decode the signal.
RMS: Root Mean Square or the square root of the arithmetic mean (average) of the square’s set of values. A reasonably accurate method of describing an amplifier`s power output.
SACD: Super Audio CD. Enhanced audio format with up to six channels of high-resolution audio encoded using DSD. Requires an SACD player. Multichannel also requires a controller with six-channel analog or proprietary digital inputs for full playback.
Sampling Frequency: How often a digital sample is taken of an analog wave. The more samples taken, the more accurate the recording will be. You need to sample at a minimum of twice the highest frequency you want to capture. For example, the 44.1-kilohertz sampling rate of a CD cannot record sounds higher than 22.05 kilohertz.
Scener: A radio report in which the announcer is recorded at the same time and place as the background sound of an event.
Sensitivity: A measurement (in dB) of the sound-pressure level over a specified frequency range created by a speaker driven by 1 watt (2.83V at 8 ohms) of power with a microphone placed 1 meter away.
Signal-to-Noise Ratio: A comparison of the signal level relative to the noise level. Larger numbers are better.
Simultaneous Interpretation: This system allows attendees to hear the meeting in their own language.
Sound Bite: A portion of audio of someone speaking.
Sound field: The total acoustical characteristics of a space, such as ambience number, timing, and relative level of reflections ratio of direct to reflected sound RT-60 time etc.
Soundstage: The area between two speakers that appears to the listener to be occupied by sonic images. Like a real stage, a soundstage should have width, depth, and height.
Speaker: A component that converts electrical energy into acoustical energy.
SPL: Sound-Pressure Level. Measured in dB.
Subwoofer: A speaker designed to reproduce very low bass frequencies, usually those below about 80 Hz.
THX: Certification program for home theater equipment. Uses some proprietary features, but mostly assures a base quality level for a given room size. (See THX select or Ultra.) Is compatible with any and all soundtrack formats. Stands for either Tom Holman’s eXperiment, after the engineer who drafted the original standard, or is named after the company’s founder George Lucas first movie, THX 1138. Nobody agrees on which.
THX select: Certification program for speakers and receivers that assures a base level of quality and performance when played in a room that’s between 2,000 and 3,000 cubic feet.
User-Generated Content (UGC): Text, photos, video or audio supplied by the customers of a company.
Voicer: A radio report without background audio taken from a scene or otherwise.
Wrap: A radio report containing both the reporter and an actuality.
Professional used lighting equipment.| Professional second hand lighting equipment.| Professional pre owned lighting equipment.
Professional used audio equipment.| Professional second hand audio equipment.| Professional pre owned audio equipment.
Second hand audio gear. | Second hand lighting.
Pro audio equipment, second hand amplifiers, DJ, second hand sound systems, second hand Microphones, second hand Media Players.
Outdoor & Indoor LED screens for sale, LED mobile truck.
Light trussing, Gebrauchte Veranstaltungstechnik, used stage equipment Stage & Theatre lighting products.
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