®
LPP240A
FIR 2 In - 4 Out Speaker Management System
LPP240A is a High End 2-IN/4-OUT digital speaker management
system which maintains the same outstanding Sound Quality of
the former DPA240A version, but highly improved in terms of
DSP processes and added of an astonishing FIR filtering tool
set. 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 2 analog inputs, 4 analog outputs and 1 AES/EBU inputs,
managed by 2 powerful MARANI® DSP Engines, for a full 96kHz
processing, in addition to 24 Bit AD/DA Converters. Each input
channel provides a choice of a 13-band Parametric EQ, 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.
Particularly, the 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 2 Input paths, one more 1024
taps Asymmetrical 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 Sw for the FIR filters coefficients
generation. Being the phase correction FIR Asymmetrical, a
powerful tool for adjusting/reducing the FIR latency is available,
allowing therefore the to be used without any LPP240A
problem also for Live performances still having the Phase
correction FIR running together with the eventual FIR for the XOver implementation in cascade. The supports a full LPP240A
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) c an be s wap ped at pleasure. For remote
configuration and control the can be connected via LPP240A
USB/RS485/TCP-IP connections. The control remote PC
software allows simultaneous control up to 32 units, setting all
parameters and showing real time levels.
Features
Top-grade DSP Engines and Processes
13 band parametric equalization per input channel
7 band parametric equalization per output channel
Each band can be switched to Bell, Shelving, HP/LP, Band
Pass, Notch Filter, All Pass
IIR Crossover filters with slopes from 6 up to 48 dB/ Octave
including Butterworth, Bessel, Linkwitz-Riley
FIR X-over Filters with number of Taps from 256 up to 512,
Attenuation and Window Type
Asymmetrical 1024 Taps FIR for Phase Correction on each of
the 2 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 480 ms for every input channel
and 340 ms for each output channel
Direct PC/Network Connection
Front panel USB connector for direct PC communications
RS485/TCP-IP connection for system setup, monitoring and
control via fully manageable remote PC software
Simultaneous control up to 32 units via PC software
Applications
Auditoriums
Convention Centers
Designed in Italy Assembled in China
SEED Guangzhou Electronic LTD. 4F/5F, Build B, No.885, Shenzhou Road, Guangzhou, China Tel:+86 (20) 62845258 - www.marani-proaudio.com - info@marani-proaudio.com
Houses of Worship
Stadiums and Arenas
Theaters
Touring Musicians
Performing Art Centers
Stage Monitoring System digital
LPP240A
Audio
Analog Input ------------------------------Analog Output ----------------------------Digital Input -------------------------------Minimun Load -----------------------------THD+N ------------------------------------S/N -----------------------------------------Grou nd Nois e---------- ----------- --------Frequency Response ---------------------
DSP & Processing
®
LPP240A
FIR 2 In - 4 Out Speaker Management System
2 x XLR electronically balanced
4 x XLR electronically balanced
1 x AES/EBU; Gain 0dBu
150 ohm
0.001% at 1kHz 0dBu
>110dBA
-90 dBu
20Hz - 20kHz; -0.5dBu at 20Hz and 20kHz
DSP Engine -------------------------------DSP Resolution --------------------------FIR for Phase Correction-----------------
Parametric Equalization ----------------Filter Type --------------------------------Filter Gain ---------------------------------Center Frequency ------------------------Filter Q/BW --------------------------------
Input&Output Gain------------------------IIR Crossover Section Hp/Lp -------------
FIR X-Over Section Hp/Lp/Bp-------------
Internal Noise Generator----------------Input Noise Gate--------------------------
Input/Output RMS Compressor---------
Output Peak Limiter----------------------
Delay------------------------------ ------- ---
Routing--- --- ---------- --- ------------- -----
General
Device Presets --------------------------Front Panel ----------------------- ---- ----
Rear Panel ---------------------------------
Main AC -----------------------------------Dimensions ------ ------------- ------------Weight, Net / Shipping -------------------
2 x MARANI® DSP
24bit (data) x 24 bit (coeff.), 54 bit accumulation registers, 96 bit precision on intermediate processing data
Asymmetrical 1024 Taps, 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
13 PEQ filters per input; 7 filters per output
Bell, Shelving, HP/LP, Band Pass, Notch Filter, All Pass
From -15dBu up to +15dBu by 0.5dBu resolution steps
from 20Hz up to 20kHz with 1Hz resolution steps
Bell Type: Q from 0.4 up to 128 in 100 steps
Shelving/Hp/LP Type: Q from 0.1 up to 5.1 in 100 steps
Band Pass/Notch Type/All Pass: Q from 4 up to 104 in 100 steps
From -18dB to +12dB by 0.1dBu resolution steps
Butterworth: 6/12/18/24/36/48dB per octave
Bessel: 12/24dB per octave
Linkwitz-Riley: 12/24/36/48dB per octave
Hp/Lp/Bp filters, Taps from 256 up to 512, Attenuation up to -120dB, Window type as Rect / Sinc / Keiser /
Hanning / Hamming / Blackman / Nuttal / Sine
White/Pink Noise; Level from -40dBu to 0dBu
Threshold from -80dBu up to -50dBu, or not active
Attack time from 1ms up to 1000ms; Release time from 10ms up to 1000ms
Threshold from 20dBu up to -10dBu; Makeup from -12dBu to +12dBu
Ratio: 2:1~32:1; Knee: 0~100%;
Attack time from 0.1ms up to 5000ms; Release time from 0.001sec up to 10sec
Threshold from 20dBu up to -10dBu;
Attack time from 0.1ms up to 900ms; Release time from 0.04sec up to 6sec
480 ms 10.4us increment/decrement steps for each input, 340ms 20.8us increment/decrement steps for each
output
Full matrix mixing mode
Up to 16 User Presets
2 x 24 character LCD display with green LED backlight
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
NAV/PM1 Rotary encoder push button switch
Pm2, PM3, ENTER, ESC, UTILITY push button switches
EDIT/MUTE push button per channel
USB type A connector
(1+1) x XLR female connectors (2 x Analog Input or 1 x AES/EBU)
4 x XLR male connectors (Output)
1 x RJ45 connector for RS485 (Input)
1 x RJ45 connector for RS485 (Output)
1 x RJ45 connector for TCP-IP
1 x Ground-lift toggle switch
1 x Analog/Digital toggle switch
IEC C13 16A connector; Power on/off switch
90-240VAC (50/60Hz) – 40W
19”x 1.75”x 9” (483x44x229mm) 1RU
7.71 lbs (3.5 Kg) / 8.82 lb (4 Kg)
Specifications subject to change without notice
Designed in Italy Assembled in China
SEED Guangzhou Electronic LTD. 4F/5F, Build B, No.885, Shenzhou Road, Guangzhou, China Tel:+86 (20) 62845258 - www.marani-proaudio.com - info@marani-proaudio.com
LPP240A
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