Generators

Generators

This article is based upon information gleaned from Bose® engineers and users at the Bose® Pro Portable PA Community.

Whenever possible, it is recommended that AC power be used to power the L1 .

Portable power generators are usually small diesel or regular gas engines with an electric generator attached. They are generally heavy, noisy, smelly, and may produce questionable power quality.

In addition, you will have to locate the generator fairly far away to keep it from interfering with the sound of your performance.

Considerations

If you are in a situation where you must utilize an electric generator to power the L1 , there are several things to consider.

• Although the L1 system is very efficient, it produces 750 Watts of power and therefore requires a good input power supply that is rated at least 1400 Watt. As a general guideline, you should budget at least 1000 Watt per system.

• Only use “inverter type” generators. These generators will provide “clean” sine wave power that make them safe for use with sensitive equipment such as computers, laptops and the L1 . Generators of the type commonly used in construction should be avoided.

• If performing with the L1 at a gig where an unfamiliar generator is being used, it is advisable to bring a multimeter and monitor the output voltage of the generator. If the reading is above 140 V or below 100 V, then the Bose system may not work reliably.

• Beware if you are at a gig where you must plug into a generator that also has something with a large compressor (like a refrigerator or freezer) plugged into it. When the compressor shuts off, there may be an excess of energy going through the line causing a significant spike in voltage going to the L1 . Conversely, when the compressor starts up, there may be a significant power drop-off from the L1 .

Recommendation

The Honda EU2000i is highly recommended at the Bose^® Pro Portable PA Community by several L1 users if a generator is regularly required for gigs. The EU20001 has AC output of 120V 2000W maximum (16.7A) and uses inverter technology to provide the kind of clean power that is safe for use with the L1 . The EU2000i is relatively quiet (59 dB) and light (46.3 lbs. dry) compared to other portable generators in its power specifications range. The fuel tank capacity is 1.1 gallons and can run for 4 continuous hours on full load, or 15 hour at 1/4 load.

In addition, this generator has been given permission for use in US National and California State Parks which have tough regulations.

Acknowledgements

Hilmar-at-Bose, Cap Capello, Kyle-at-Bose. Thank-you for your information.