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. The bag has a center divider, each side would measure 7.125" x 14.25" correct?

A: The Celestron Soft Telescope Bag (40") has a center divider so each side measures about 7x14x39 inches.

Q: 2. Can i just use the 1/4 to a board instead of sending xlrs to it? im trying to save input space on mixer and use this ( or seperate mixer ) for all drum mics.

A: A separate microphone mixer would be the best option for connecting your drum mics. That would allow you to control the individual levels for your drum mics and then send a drum mix out from the separate mixer to the input channel(s) on your main mixer. Please feel free to contact us directly and we can help you to select an appropriate mixer to accommodate your drum mics and work together with your main mixer.

Q: 3. How many frames come in this kit?

A: The Matthews Floppy Flag comes with 4 flags that all have their individual frame.

Q: 4. Is there any reason this bag cannot be used to carry a DSLR with a long lens? I can't find any pictures of the interior. Can I lay a camera and long lens in this bag? canon 7dii+2x+300mm 2.8 is 20 inches long, so it looks like this would fit?

A: Scott, the interior length of the bag is just a little over 23 inches. I have two of these bag for 2 Panasonic video cameras that are about 19 inches long. There's room in the bag for the camera, a 7 inch flat screen monitor, headphones and power supply. The two side pockets can easily carry spare batteries, microphones, etc. This bag should easily work for you. I posted some pictures of the interior, go to tinyurldotcom/q3ma57w

Q: 5. What speakers are recommened withthis amp?

A: You can use a 100 WATS SPEAKERS

Q: 6. 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: 7. What is the approximate range for this device? How large of a room?

A: The Polsen USB Boundary Microphone picks up audio in a 360-degree radius up to approximately 10 feet away.

Q: 8. Does this radio need to be programmed?

A: No it does not.

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

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

Q: 10. Can this device receive NDI'HX streams or is it limited to full NDI?

A: The BirdDog wallplates are limited to Full NDI and have no NDI|HX support.