Lab.gruppen E4:2 400w E-series Installation Amplifier With 2 Flexible Output Channels
- Product Code: ga103333
-
System installers in search of a compact, flexible amplifier with Hi-Z and Lo-Z output capabilities should check out the Lab.Gruppen E 4:2, a 1 RU, two-channel 400W amplifier for mixed A/V installation applications. The E 4:2 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 small sub on one channel and several 70V ceiling loudspeakers on the second channel.
Two-Channel Amplifier: 2 x 200W IntelliDrive: 70V or 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
Key Specs | |
---|---|
Number of Channels | 2 |
Amplifier Power Rating | 2 Ohms / 4 Ohms / 8 Ohms: 200 W 16 Ohms: 200 W 70 V / 100 V: 200 W |
Load Impedance / Voltage | 2 / 4 / 8 / 16 Ohms 70 / 100 V |
Analog Audio I/O | 2x Block 3-Pin Balanced Line Input 2x Block 2-Pin Speaker 1x Block 4-Pin GPIO Input/Output |
Rackmount Size | 1 RU |
Amplifier | |
Number of Channels | 2 |
Amplifier Power Rating | 2 Ohms / 4 Ohms / 8 Ohms: 200 W 16 Ohms: 200 W 70 V / 100 V: 200 W |
Amplifier Class | Class-D |
Load Impedance / Voltage | 2 / 4 / 8 / 16 Ohms 70 / 100 V |
Performance | |
Protections | RMS, Reactive/Mismatched Load, Short Circuit, Signal Limiter, Thermal, Undervoltage |
Frequency Response | 2 Hz to 40 kHz |
Input Sensitivity | 4 dBu (at 4 Ohms) 4 dBu (at 70 V) 1 dBu (at 2 Ohms) |
Input Impedance | 20 Kilohms |
Max Gain | 35.2 dB (at 70 V) 27.2 dB (Low-Z) |
SNR | > 112 dBA |
THD | < 0.1% (20 Hz to 20 kHz, at 1 W) < 0.05% (1 kHz, Below Rated Power) |
Crosstalk | > 70 dB |
Common Mode Rejection Ratio (CMRR) | 50 dB |
Signal Processing | |
Crossover | Yes |
Filters | High-Pass: 50 Hz |
Limiting | Yes |
Connectivity | |
Analog Audio I/O | 2x Block 3-Pin Balanced Line Input 2x Block 2-Pin Speaker 1x Block 4-Pin GPIO Input/Output |
Power | |
AC Input Power | 100 to 240 VAC, 50 / 60 Hz |
AC Power Connector | 1x IEC 15 A / NEMA 5-15 |
Power Consumption | 1 W (Standby) |
Physical | |
Rackmount Size | 1 RU |
Cooling | Fan (Variable Speed) |
Certifications | ANSIS1.4 Type 2, CCC, CE, CSA, ENERGY STAR, ETL, PSE, UL, RoHS, WEEE |
Dimensions | 19.0 x 1.8 x 10.9" / 482.6 x 45.7 x 276.9 mm |
Weight | 9.3 lb / 4.2 kg |
Packaging Info | |
Package Weight | 13.64 lb |
Box Dimensions (LxWxH) | 22.5 x 16.4 x 5.8" |
- 400W amplifier carrying 2 flexible output channels in a high power density 1 rack unit 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 2 x 200W at constant voltage 70V or low impedance (2, 4, and 8 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 installations' 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 fan 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. Is this lens (MFR #2096-550) compatible with Nikon D7000? The compatibility list shows D7100 and D7200 so I assume it is, but wanted to be sure.
A: Yes. Due to its manual-only design, this will work with most Nikon DSLRs. :)
Q: 2. Does this lens have internal focusing? I would be using it with a matte box and would like to keep the option of filters open.
A: The ZEISS Milvus 1.4/25 features internal focusing and there is no front telescoping of the barrel while focusing.
Q: 3. Does this lens work manuals focus guide for Canon eos R ?
A: This lens would allow for the use of focusing peaking when adapted to a Canon EOS R.
Q: 4. Can I Use this lens with Sony A7models with an special adapter ?
A: The best adapter is this one to use the ZEISS Otus 28mm f/1.4 ZE Lens for Canon EF on a A7 series camera, https://bhpho.to/46wH423. Note the mfr does not list that lens specific but should be find.
Q: 5. Does this lens have hard stops?
A: Yes the lens does have hard stops and you can use the aperture ring manually if you so choose; however, there is also an option to de-click the aperture ring using a tiny tool that is included with the lens. It is very simple to do. So if you are shooting video or you just prefer to not have hard stops than you can use the lens this way. If you prefer hard stops it can do that too! Best of both worlds
Q: 6. Is there chromatic aberration with this lens? I have it on my zeiss 28mm
A: The CA characteristics of the Milvus 1.4/50 are improved over the Classic Planar 1.4/50 and can be further controlled via profile corrections in software tools, such as the defringe feature in Adobe Lightroom.
Q: 7. 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: 8. Can you use both the front and rear out puts at the same time?
A: Yes, you can use both sets of outputs from the Peavey PVi 8500 Mixer/Amplifier at the same time, as long as they are used for the correct application. The main and monitor outputs on the front panel are used for connection to external power amplifiers or powered speakers, so these outputs bypass the mixer's built-in power amp section. The main and monitor outputs on the back panel are amplified outputs that are used to connect passive speakers.
Q: 9. Is the depth of field scale on the lens accurate? If for any F Stop, one end of the scale is on Infinity, will the other end of the scale accurately reflect the near focus point? I like the Batis lenses for this reason.
A: Hi John, Absolutely! The people at Zeiss did a through program in developing this beautiful piece of seeing glass and it's secretly artificial glass. The depth of field is right on the money, I have now spent countless hours shooting landscapes and I couldn't be happier. It will problem be one of your best investments. Rad
Q: 10. Hows the IR performance of this lens?
A: The ZEISS Milvus lens family are designed for use in the visible spectrum and feature anti-reflection coatings that limits the amount of UV and IR transmission. While the lens can be used for IR applications and includes an IR focusing mark, the light transmission will be below 50% in the NIR range and less over 1,000nm. Our recommendation is to rent the lens and test to see if it meets your particular needs.
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