FIR Flagship Speaker Management System

LPP480F is a high end 4-IN/8-OUT digital speaker management system which is MARANI® flagship controller, adding astonishing hardware and software features on the basis of the LPP series. Designed for maximum versatility, it provides all the processing and control necessary for both live and fixed installation use. Proving for any crossover configuration, it offers 4 analog inputs, 8 analog outputs, 2 Stereo AES/EBU inputs, and 4 Dante™ inputs, managed by 3 powerful MARANI® DSP Engines, for a full 96kHz processing, in addition to 24 Bit Texas Instruments AD/DA Converters. Each input channel provides a choice of a 13-band Parametric EQ, with plenty of filter types, Gain control, Noise Gate, RMS Compressor, Internal White/Pink Noise Generator, and configurable Delay. Each output offers up to 7-band of parametric equalization, in addition to the IIR crossover filters which themselves provide slopes from 6dB/Octave up to 48dB/Octave. Each output path also features PEAK Limiter, RMS Compressor and configurable Delay. Output X-Over Filtering can be selected to be IIR style, with the complete set of Classic Hp/Lp filters (Butterworth, Linkwitz-Railey, Bessel) or FIR, being for each output channel available a 512 taps FIR filter which can be set as Hp/Lp/Bp.

On each one of the 4 Input paths, one more 1024 taps FIR is available for Phase Correction purposes, where the Coefficients Calculation can be supported by an embedded Wizard tool or can be loaded from external sources as Third Parties software for the FIR filters coefficients generation. Being the phase correction operated by an FIR Filter which can be Asymmetrical other than Symmetrical, a powerful tool for adjusting/reducing the FIR latency is available, allowing therefore the LPP480F to be used without any problem also for Live performances still having the Phase correction FIR running together with the eventual FIR for the X-Over implementation in cascade.

The LPP480F supports a full set of matrix mixing modes where Input sources can be routed/mixed to the Input paths, inputs paths may be routed/mixed in any ratio to any output and couple of outputs (1/2, 3/4, 5/6, 7/8) can be swapped at pleasure. For remote configuration and control the LPP480F can be connected via USB /TCP-IP Interfaces. Moreover, with front panel dedicated buttons, user can go directly to the editing pages like Xover, channel editing windows, while can monitor the real-time meters and other parameters from the LCD screen.

Top-grade DSP Engine and Processes

13 band parametric equalization per input channel 7 band parametric equalization per output channel Each band can select within a range of 17 different filter types, on output channels, IIR Crossover filters with slopes from 6 up to 48 dB/ Octave including Butterworth, Bessel, Linkwitz-Riley and Custom, allowing to set independently teach single Iind order cascaded cell, in alternative to the IIR X-over, FIR X-over Filters with number of Taps from 256 up to 512 are available. Symmetrcial/Asymmetrical 1024 Taps FIR for Phase Correction are on each of the 4 Input paths [FIR coefficients generated internally by the machine or loadable from external third parties applications] RMS compressors working on Look Up tables for the Compression coefficient are available on Input and Outputs paths. On Outputs a further Peak Limiter is available at the end of the paths. Adjustable Delay time up to 340.998 ms for every input and output channel

Direct PC/Network Connection

The LPP480F can be controlled by Remote Sw via a front panel USB connector for quick direct PC access or via a back panel TCP-IP connection for networking purposes. The all processes can also be accessed and edited through a powerful dedicated front panel interface based on graphic LCD, buttons and flexible Joystick. FW update is available by remote control PC SW

Audio

Analog Input	4 x XLR electronically balanced
Analog Output	8 x XLR electronically balanced
Digital Input	2 x stereo AES/EBU  （0dBFs=+21dBu）
Minimum Load	150 Ohm
THD+N	≤0.003 @1kHz 20dBu/0dBu
S/N （A weight）	>116dB
Max Input/Output Level	+21 dBu
Frequency Response	20Hz – 45kHz; -0.5dB
AD & DA Converters	24bit -96kHz
Ground Noise	-94 dBu

 

 
DSP & Processing

DSP Engine	3 x MARANI® DSP
DSP Resolution	24 bit (data) x 96 bit (coeff.), 54bit accumulation registers, 96 bit precision on intermediate processing data
FIR for Phase Correction	From 8 x 1024 Taps up to 2 x 4096 taps if combining 4 Channels for each FIR, with coefficients generated by Pc Sw embedded Wizard tool, allowing also FIR latency Adjustment/reduction. Coefficients can also be imported by external third party applications, so as can be exported to third parties applications
Parametric Equalization	13 PEQ filters per input  7 filters per output
Filter Type	Bell, High/Low Shelving 1st/2nd/Qvar, HP/LP 1st/2nd/Qvar, Band Pass, Notch Filter, All Pass and Custom (When Custom IIR filter is selected on the Peq., the Filter's coefficients can be imported from any external application generating IIR coeffs.)
Filter Gain	From -15dB up to +15dB by 0.5dB resolution steps
Input&Output Gain	From -18dB up to +12dB by 0.5dB resolution steps
Center Frequency	from 20Hz up to 20kHz with 1Hz resolution steps
Filter Q/BW	Bell Type: Q from 0.4 up to 128 in 100 steps Shelv/Hp/LP Type: Q from 0.1 up to 5.1 in 100 steps BandPass/AllPass/Notch Type: Q from 4 up to 104 in 100 steps
IIR Crossover section HP/LP	Butterworth 6/12/18/24/36/48 dB per octave Bessel 12/24 dB per octave Linkwitz-Riley 12/24/36/48 dB per octave
FIR X-Over Section Hp/Lp/Bp	Hp/Lp/Bp filters, Taps from 256 up to 512, Attenuation up to -120dB/oct, Window type as Rect / Sinc / Keiser / Hanning / Hamming / Blackman / Nuttal / Sine
Internal Noise Generator	White/Pink Noise; Level from -40dBu to 0dBu
Input Noise Gate	Threshold from -80dBu up to -50dBu Attack time from 30ms up to 1000ms; Release time from 1ms up to 1000ms
Input&Output RMS Compressor	Threshold from 21dBu up to -9dBu Ratio: 2:1~32:1; Knee: 0~100%; Makeup from -12dB to +12dB Attack time from 0.1ms up to 5000ms; Release time from 0.001sec up to 10sec
Output Peak Limiter	Threshold from 21dB to -9dB Attack time from 0.1ms up to 900ms; Release time from 0.04sec up to 6sec
Routing	Full matrix mixing mode
Delay	480.998ms 10.4us increment/decrement steps per input, 340.998ms 10.4us increment/decrement steps per output

   

 
General

Device Presets	up to 120 User Presets
Front Panel	LCD graphic display with blue LED back light 7-LED meter per input channel -15dBu to +15dBu, clip and limiter mode 7-LED meter per output channel -15dBu to +15dBu, clip and limiter mode Blue LED (Edit) per channel Red LED (Mute) per channel Rotary encoder push button switch Push button switches to quick editing page EDIT/MUTE push button per channel USB type A connector
Rear Panel	(2+2) x XLR female connectors (4 x Analog Input or 2 x AES/EBU) 8 x XLR male connectors (Output) 2 x RJ45 connector (TCP/IP, RS485) 2 x RJ45 connector (Dante™) IEC C13 16A connector; Power on/off switch
Main AC	90-240VAC (50/60Hz) – 40W
Dimensions	19”x 1.75”x 9” (483x44x229mm) 1RU
Weight, Net / Shipping	7.71 lbs (3.5 Kg) / 8.82 lb (4 Kg)