System installers in search of a compact, flexible amplifier with Hi-Z and Lo-Z capabilities should check out the Lab.Gruppen E 40:4, a 1 RU, four-channel 4000W amplifier for mixed A/V installation applications. The E 40:4 utilizes IntelliDrive Energy Efficient Amplifier (IDEEA) technology to produce high power levels with very low distortion while drawing minimal mains current.

E-Series amplifiers also utilizes Lab.Gruppen's proprietary Rail Sensing Limiter (RSL) technology, which greatly reduces signal clipping to ensure high-quality audio output all the time. The amplifier is user-configurable for Hi-Z (70V) or Lo-Z. The RSL circuit senses rail voltage and optimizes each channel output for instantaneous load conditions. This allows for asymmetrical channel loading for optimized performance and efficiency. Total available output power can be allocated among the channels as required by the application. This makes it possible, for example, to drive a pair of small sub on two channels and several 70/100V ceiling loudspeakers on the other channels.

Four-Channel Amplifier: 4 x 1000W    IntelliDrive: 70/100V & 2, 4, 8, 16 Ohms    Energy-Efficient Class-D Amplifier    Asymmetric Channel Loading    Comprehensive Circuit Protection    Rail Sense Limiter (RSL)    Includes Screw Terminal I/O Blocks    Includes Power Cord    Limited 5-Year Warranty

• 4000W amplifier carrying 4 flexible output channels in a high-power density 1 RU form factor saves rack space and system cost
• Energy efficient with Energy Star certification for supreme green credentials and exceptionally low lifetime running costs
• Flexible IntelliDrive permits delivering the 4 x 1000W at constant voltage 70/100V or low impedance (2, 4, 8, and 16 ohms) on any channel
• Asymmetric channel loading allows mixing and matching loads with different impedances to maximize overall system efficiency and inventory utilization
• High-efficiency amplifier with low power consumption and minimized heat generation lowers demands on the installation's mains distribution and cooling systems
• IDEEA outputs stage based on proprietary, state-of-the-art Class-D amplifier technology for superior performance
• Comprehensive fail-safe circuit protection ensures continued operation, even under reduced operating conditions
• Auto-standby and auto-power-on reduces power consumption to below 1W in non-operating cycles
• Rail Sense Limiter (RSL) greatly reduces signal clipping and ensures simple configuration for constant voltage and low-impedance loads
• Built-in 50 Hz high-pass filter selectable per channel available on rear-panel switch
• Per-channel attenuation knob and signal LED on rear panel for simple commissioning
• Efficient cooling with temperature-controlled fans with front to back airflow
• Aluminum front panel with power and temperature LEDs and per-channel signal and limit LEDs
• GPIO connector with power control and indication for further system integration
• Balanced high-quality analog inputs and amplifier outputs on detachable screw terminals

Related Questions and Answers

Q: 1. Does this radio need to be programmed?

A: No it does not.

Q: 2. What speakers are recommened withthis amp?

A: You can use a 100 WATS SPEAKERS

Q: 3. Will this work to power a SmallHD Action 5 through a Smallrig vb99 Vmount battery?

A: The GyroVu USB to Sony L-Series Dummy Battery Cable (40") (B&H# GYGVUSBSL) can provide up to 10W of power while the SmallHD Action 5 Touchscreen 5" On-Camera Monitor (B&H# SMACTION5) can draw up to 12W. As such, while it may be used, full brightness may not be achieved. We'd rather recommend connecting that battery to the stated monitor using the Tilta 2.1mm to 2.1mm Male DC Barrel Power Cable (B&H# TITCB21DCM21): https://bhpho.to/3ItN3vj

Q: 4. just bought two swit 8972 batteries but the indicators don't light ?

A: Mine light up (bought last month) perhaps a full charge or swit charger recalibration is in order?

Q: 5. Will the traditional Motorola stye surveillance earpiece and mic work with radio?

A: Yes, the Motorola DTR700 Digital 2-Way Radio will work with traditional Motorola earpieces such as the Motorola HKLN4601 Single Wire Surveillance Earpiece with In-Line Mic and PTT (MOHKLN4601).

Q: 6. Hello Can i control the volume of each zone or set of speakers separately Can i send different music to different zones Thanks

A: To control the volume of each zone, you need to have a separate volume control unit connected to each zone. You can selectively turn on and off zones from the amplifier but you cannot create different mixes for each zone.

Q: 7. Can this amp be used to power MCM 55-10345 tweeter array? These are not powered and can't be heard, or would some other small amp work? Any suggestions. Thanks, EYD.

A: Yes it can.

Q: 8. Can this power an Atomos Shinobi?

A: Yes. here is another suggestion as well Power2000 AC-F550 AC/DC Adapter with Sony L-Series Dummy Battery BH #POACF550 • MFR #AC-F550 https://bhpho.to/3dlR07S

Q: 9. IS THERE A MANUAL FOR THE -ETC CS20 ?

A: There is. It can be found on ETCs website.

Q: 10. Does this have accessory jack for handheld microphone?

A: Motorola does not offer a handheld microphone for this radio.