JDM ZA1120A mixer amplifier 120W/100V

High-tech in professional amplification!

The fP 2400Q is a lightweight and space-saving four-channel power amplifier, ideal for
use in high quality touring sound systems as well as in demanding permanent installations.
The fP 2400Q offers a diverse choice of applications, such as: multi-channel monitor
systems, four-channel reproduction, and compact amplification in active 2-, 3-, and 4-way
systems.
The fP 2400Q makes possibile the bridge connection of one or two of the two pairs of
channels (channel A and B and/or channel C and D). It also features Lab.gruppen?s unique
power matching solution, the MLS switch, which offers endless combinations for solving
most of the problems related to varying impedances and maximum power capacities of
loudspeakers. The latest semiconductor technology is utilized in the new ferrite Power (fP)
amplifiers.
This, together with Lab.gruppen?s proprietary copper cooling system, Intercooler?, enhances
the 2 ohms capacity. Two easily accessible dust filters on the front ensure a clean front-to-rear
airflow. Additionally, a new Bi-phase wiring scheme also increases the capacity of the switch
mode power supply. This extends the power bandwidth in the low end.

Key Features:
4 x 370 watts @ 8 ?
4 x 380 watts @ 4 ?
4 x 500 watts @ 2 ?
(Measured just below clip level, with all 4 channels driven)
Light weight and compact: only 8.6 kg (19lbs), 2U high
MLS? Switch: Lab.gruppen?s unique power matching for different loads

New Features:
Replaces the LAB 1200C
Easily accessible dust filters
Improved low-end power bandwidth
Extruded front panel for increased stability

Besides the traditionally superb Lab.gruppen sonic performance, there is a full line of features
to make the fP family functional in all situations from installation to high performance live
sound systems:

Regulated switch mode power supply
Today there are many lightweight, switch-mode amplifiers in the market. However, the unique
Lab.gruppen switch-mode power supply technology offers a number of essential advantages
that make it superior to other and seemingly similar power supply designs. The most important
features are the regulated power supply and the extreme power efficiency. The regulated power
supply easily deals with a very high variation in the AC mains voltage: it can drop by up to 20%
below its nominal level - e.g. to 180 V instead of 230 V ? without any problem. Perhaps even
greater benefits result from the extreme efficiency of Lab.gruppen amplifiers: only a fraction of the
energy from the AC mains is turned into heat.
A regulated power supply also presents some other sonic advantages, such as better cone control
and the same fast response as a conventional power supply.

Sophisticated protection circuitry, combining:
ALS? short circuit protection; the Adaptive Limiting System permits very high peak currents, but
keeps the amplifier within the Safe Operation Area
DC protection; protects against infrasonic signals
VHF protection; protects the loudspeakers against strong very high frequency non-musical signals
above the audible range
Thermal protection; prevents the amplifier from being overheated. The protection indicators on the front
panel are switched on, as a warning, before the protection process is initiated
AC protection; shuts down the power supply if the line voltage is outside the operating voltage
Clip limiter; prevents severely clipped waveforms from reaching the loudspeakers, whilst maintaining
full peak power.

LD Premium LDSP44K 4-Channel Power Amplifier

The LDSP44K is a professional 4-channel power amplifier offering amazing value and versatility in a compact lightweight Class H design. Suitable for touring and installation sound reinforcement it delivers a maximum of 4x 980W into 2Ohms and 2x 1.960 in 4Ohms stereo bridge mode.

Featuring a high efficiency switch mode power supply the LDSP44K provides a 20Hz – 20kHz bandwidth with low THD and crosstalk, a damping factor higher than 500, excellent S/N ratio and 3 switchable sensitivity levels.

Reliable performance is ensured by heavy duty engineering, high quality components and comprehensive protection including soft start with turn-on muting, PMS™ power management, SSP™ (Safe operation Sentry Protection) and ICL™  (Intelligent Clip Limiting) to maintain signal integrity. Protection circuits against DC, thermal and power supply overload are implemented. A switchable subsonic filter and a 3-position gain switch offer variable amplifier adjustment.

• Type: Professional Power Amplifier
• Model Name: SP44K
• Output Power 1 kHz,
• 2 ohms 4 x 980 W
• 4 ohms 4 x 670 W
• 8 ohms 4 x 430 W
• Bridge 4 ohms 2 x 1960 W
• Bridge 8 ohms 2 x 1340 W

The DPA series amplifiers are digital power amplifiers designed to meet the specialized needs of sound contractors for Multi-Zone distributed speaker systems. They are designed in six different models of Class D power amplifiers, divided in three different architectures to meet the requirements for all kinds of applications.

They combine the best of all features in one single series of amplifiers, providing an outstanding sound quality with all the known advantages of Class D Amplifiers. Such as the excellent efficiency and very low heat dissipation. And due to the complete passively cooled entity only a minimal of maintenance is needed, while ensuring maximum reliability.

The small size of a single rack space make them very interesting for fixed rack mount as well as mobile applications.

The DPA74 is built as multi channel power amplifier with four individual controllable channels containing various specific features and advanced protection circuitry which protects against DC malfunctioning, short circuit, overheating and overload.

The signal input connections are accommodated with balanced XLR connectors. The operation mode can be selected between Stereo mode, Bridge mode and Parallel mode. The output connections are accommodated with Euro-Terminal blocks.

• Model Name / Type: DPA74 / Digital Amplifier
• 8 ohms: 4 x 50 W
• 4 ohms: 4 x 75 W
• 8 ohms Bridge: 2 x 150 W
• THD+N:
• Signal / Noise: > 100 dB
• Frequency Response: 20 Hz - 20kHz
• Power Supply: 240 V AC / 50 - 60 Hz
• Dimensions (W x H x D): 483 x 44 x 300 mm

• Eight and four channel models with 300W and 150W per channel
• Minimal footprint and mass arround 200mm depth and 6 Kg
• Optional Add-on card to interface with third party alarm systems with GPIO connections
• FCM™ Faulty Channel Management system to avoid entire device shutdown
• State-of-the-art layout for maximum performance and reliability
• Highly oversized thermal dissipation design for maximum reliability
• Superb distortion and noise figures
• All channels bridgeable by pairs
• Selectable gain in four channel groups (26, 32 and 38dB)
• Subsonic filter per channel (35Hz user selectable)
• Temperature and signal dependant, intelligent cooling system for minimal
noise
• Optimal heat extraction due to the air tunneled enclosure and insulator-less
power device attachment to the heatsink
• Direct connector-less output for maximum quality loudspeaker control
• High grade engineering inside with the latest SMD technology
• Balanced Inputs with 0.1% tolerance resistors for a precise noise rejection
• Critical electronic and mechanical parts selection
• Innovative protection systems, FCM™ Faulty Channel Management and SSP™
SOA Sentry Protection
• Detented and optionally tamper-proof volume potentiometers
• Hi efficiency, two steps Class H Audio topology
• Protection, Signal and Clip indicators per channel
• Power On and Standby general indicators
• Extremely compact, fully featured QuantaPulse Power supply
• Low current consumption and heat generation allowing less demanding
conditions for multiple amplifier installations
• Factory preset worldwide mains voltage power supply
• Laser cut four milimeters aluminium front panel
• Rugged 2U steel chasis

Frequency Response (power bandwidth ±0.25dB): 20Hz-20kHz

Phase Response (@1W 20Hz-20kHz): ±15deg

Total Harmonic Distortion (20Hz-20kHz):
Intermodulation Distortion (SMPTE):
Crosstalk (20Hz-20kHz): >70dB

Voltage Gain (selectable): 26/32/38 dB

Sensitivity: T604:1.5/0.8/0.4V - T1204:2.1/1.0/0.5V - T1208:1.4/0.7/0.4V - T2408:2.0/1.0/0.5V

Signal to noise ratio: T604:107dB - T1204:110dB - T1208:107dB - T2408:110dB

Required AC Mains (@8ohms 1/8 rated power): T604:1A - T1204:1.5A - T1208:1.4A - T2408:2.6A

Dimensions (WxHxD): 483x88.9x210 mm - 19x3.5x8.27 inches

Weight (Net): T604/T1204: 5.4Kg - 11.8Lbs T1208/T2408: 6.2Kg-13.5Lbs

Protections: Soft-start, Turn-on Turn-off muting, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded power supply, SSP™ and FCM™