L1 Model II

Let's talk about the L1® Portable Line Array Systems

Using proprietary Bose® technology, L1 systems combine  PA and monitors into a single, highly portable unit. The  loudspeaker can be positioned behind or to the side —and you hear what the audience hears.

Highly portable PA and monitor combined for solo performers, DJs and general-purpose use. Fixed vertical control with 180° horizontal coverage Reduced vulnerability to feedback.

Three systems to choose from (Compact, Model 1S, Model II)
Two passive bass module options (B1 or B2)
Consistent coverage and tonal balance, portability and easy setup.

L1 Model 2 Power Draw?

We sometimes gig in places where power is provided by generators, so I'd like to be able to give a definitive answer regarding the power requirements for my L1 Model II.

I know it says 500W, but what does that mean in terms of what I need from a generator or solar battery or whatever? Amps? kWh?

I saw a note here (http://toonz.ca/bose/wiki/inde...%AE_Compact#AC_Power) about the L1 Compact.

What can I tell our hosts about power requirements to run an L1 model II for 3~4 hr ?





Original Post

ST , I wanted t get your thoughts on this. We have a gig at a farmers market that offers a generator for power and I will have to look into what their wattage is. However, I see that whatever it’s wattage, they have numerous runs off of it to power various other farmers tent areas other than the music tent which worries me about using our L1. I would suspect that power is being leeched off that one generator into a variety of equipment that could include simple lighting to running entire freezers. So the load on that generator is varied and high.

So I’m thinking that rather than risk using our beloved L1, I would use our S1 on battery and a small mixer on their power instead just to be on the safe side. It won’t project as well as the L1, but being it’s primarily a “give back” to our community sort of gig and not some highly paid professional gig, it is what it is.


ST, one other question, given the scenario where there is a generator with a lot running ofor of it and not some huge truck size generator, what would the symptom(s) of the impact to an L1 be?

Would it cut out, volume drop, or worse possibly damage the unit?

Hi CityFolk,

If the AC power is outside the range the L1 system can use1, the system won't start. If it is running and the power goes outside the range, the system will reset. If it continues to reset, then it's time to disconnect the L1 from the power source. There's more detail in these articles.

Power Considerations
Generators for Portable Power


1 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.

Source: Generators for Portable Power

Thanks for all the good info.
Wondering how the S1 holds up against an L1 model 2? Does it take the Tonematch? If I can use a pair of tonematches into an S1 like i do now with the L1M2, that might solve all these problems with power.

We play a lot of wedding gigs, often in rural areas, and at the weekend the solar system ran out of juice before we set up, so they had to dig out a generator. Got another next weekend. maybe I'll go rent an S1 and try it out.


I have a watt meter and have determined that my L1 Mod 2 with 2 B1s pulls around 50-55 watts at 120 volts when in operation...

I used to bring my L1 to a large Farmer's Market.  Then I used my JBL EON One.  Recently I've used 2 S1 Pro systems on battery with almost the same coverage of the market as the EON.

The L1 covers a MUCH larger area (I've done over 350 seats with mine) than even 2 S1s.  So it depends...

@devnulljp to echo @Chet experience, the S1 will not have nearly the projection or disbursement of sound that the L1 MII with B1 or B2 would have. You can plug in a ToneMatch into one of the channels of the S1 just fine. However, the ToneMatch will need a separate power source so not sure that is solving your issue with playing in rural areas with questionable power. 

If it’s a small, intimate setting, perhaps a S1 will do, preferably 2 S1s in your case. Several folks on the forum use 2 S1s with a battery powered Behringer mixer 1002B so they can run all battery powered in what I think sounds like a niffy setup. With 2 S1s you might be in better shape, but it still wouldn’t provide the extensive coverage from a L1 setup.

In the articles that ST has mentioned, there is a suggested Honda generator which I believe is street priced at $1000 or so. I know this is probably far out there, but if you do enough of those rural outdoor wedding gigs, you might just be better off getting or renting that sort of generator and continue using your trusty L1.

You may still want to get a S1 or two for smaller scale gigs, which is what I’ve done where our L1 would be overkill, but not use it as a stand in for the L1. 

During an outdoor gig recently on a hot/humid day, L1M2 shut down mid play when other musicians didn't. I switched to a solo direct line, was good for 90% of the gig but shut down again for 30 sec. I'm in NYC, I believe during the summer, the city systematically slows output to prevent blackouts. Rolling brownouts occur with no warning.

The consensus is that unfortunately the Bose L1M2 doesn't do well with voltage drops that would still allow regular power supplies to keep "analog" amplification systems working...

It's theoretically possible (and desirable) to power a Bose L1M2 for a number of hours using a 150-200 Amp Hour 12 volt deep cycle battery and an inverter...

Even taking the worst case power drain of about 600 watts (@ 120 v) a 150 Amp Hour deep cycle battery will power the system for at least 6 hours.  Of course, given my Watt Meter's reading of around 80/90 watts (@ 120v) for the entire system, the length of time that the battery and inverter will power the system would expand to a day or two...  :-)

500w means generator power.

Generally there are rated power, commonly used power, maximum power of generator. The maximum power is also called standby power, also known as 1 hour power, that is, if this power is maintained, the continuous operation cannot exceed 1 hour; the rated power refers to 12 hours of power, and the commonly used power means 24 hours of power.



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