LP428s speaker processor
■ LP428s is a speaker processor specially designed for pre-electronic crossover and signal processing. The 4-in 8-out design is suitable for stereo 3-way and single-channel 4-way or more.■ Processing chip from Germany, large dynamic range.
■ Ten-segment EQ adjustment can better meet the ever-changing environment of the scene.
■ The panel adopts aluminum alloy drawing die, showing its strength. And each button is a translucent latex button, white backlit LCD liquid crystal display, making the operation easier to use.
■ Each channel of the built-in digital speaker processor has built-in basic module functions such as gain control, delay, frequency division, equalization, and compression. Various parameter settings can be controlled through the USB port and PC interface, and the adjustment is simple and convenient. It is the best partner for small line array systems.
■ There are multiple language options for the operation interface: English, German, Spanish, French, Dutch.
■ This unit has 100 preset memories, while using PC has more than 100 preset memories, which is enough for actual needs.
parameter
| Model | LP428s Speaker Processor |
| Enter | Quad Balanced |
| Output | Eight-way balanced |
| Input Impedance | Balanced 20K Unbalanced 10K |
| Output Impedance | ≤ 100Ω |
| Output Gain | +12dB to -48dB adjustable in 0.25dB steps. |
| Input Gain | +12dB to -48dB adjustable in 0.25dB steps. |
| Additional parameters | |
| Frequency Response(-1dB) | 20Hz – 20kHz |
| Total Harmonic Distortion | ≤ 0.008% |
| Maximum input delay time | 2s |
| Maximum output delay time | 50ms |
| Dynamic range | ≥115dB |
| Transition Frequency (High Pass/Low Pass) | 20Hz – 20kHz, adjustable in steps of 1Hz |
| Center Frequency (High Pass/Low Pass) | 20Hz – 20kHz in 1/36 octave steps (19980 positions) |
| Minimum load impedance | 600Ω |
| Maximum output level | +18dBu (600Ω load) |
| Filter Gain | +12dB to -12dB in 0.25dB steps |
| High-pass and low-pass filters | Q value 0.2-25 adjustable, step 0.1 adjustable / 10 segments / 1 filter for each output, open and close |
| FIR filter | 8 x 800taps |
| Frequency Response | Bessel/Butterworth 6/12/18/24dB per octave, Linkwitz-Ryleigh 24dB/octave |
| Protection Features | The system can set a password to prevent the operation of unrelated personnel |
| Connectors | |
| Input Section | 3-pin XLR female socket. |
| Output Section | 3-pin XLR male socket. |
| USB Interface | Square |
| Power Outlet | 3-pin IEC socket. |
| Input (Limiter) limit | Threshold +24dBu to -48dBu |
| Output (Limiter) limit | Threshold +12dBu to -48dBu |
| Limiter | Threshold +9dBu to -50dBu. |
| Startup Time | 0 |
| Release Time | 1-100 times |
| Sampling Rate | 96kHz |
| Phase | 180°Phase |
| Display | 2 x 16 character LCD screen |
| Input meter | 2 x 7 points, -30dB to digital clipping |
| Output meter | 6 x 7 points, -30dB to digital clipping |
| Preset | 100 computer presets/100 local presets |
| version information | Hardware, software, DSP module version information |
| Size/Weight | |
| Product Dimensions(mm) | 482x231x44.5 (1U) |
| Outer Package Dimensions (mm) | 560x345x105 (1U) |
| Total weight | 4.7kg |
| The above packing dimensions, net weight, and gross weight are for reference only. The accurate values are subject to the identification on the batch of products. | |