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What are the technical differences between the original 'foot' and the new smaller one.   Ie:  same or similar power output; interchangeability in use?  I'm looking at combining an old one with a newer one.  It still does it's job, but worried about any conflicts.  Can one put the columns of either generation in either 'foot' for example.

Original Post

Hi, John Chesher.

Thank you for joining the Bose Portable PA Community.  Welcome.

John Chesher posted:

What are the technical differences between the original 'foot' and the new smaller one.  Ie:  same or similar power output; interchangeability in use? 

The L1 Classic and L1 Model I have the larger, flat power stand. The L1 Model II has the folding legs.

Acoustical Output Compared to the L1 Classic and the L1 Model II

The maximum output volume of the L1 Classic, the L1 Model I, and the L1 Model II are virtually identical.

In the L1 Classic, the L1 Cylindrical Radiator® loudspeaker is powered by two (2) 250 Watt amplifiers. In the Model I and Model II, the L1 Cylindrical Radiator® loudspeaker is powered by one (1) 250 Watt amplifier. The Classic, the Model I, and the Model II all use a second 250 Watt amplifier to power one or two B1 bass modules (update: or a single B2 Bass Module).

Although these numbers serve as a point of reference they do not tell the whole story. During the design of the L1 Model I and the L1 Model II the impedance of the L1 Cylindrical Radiator® loudspeaker was lowered. As a result of the lower impedance, a single 250W amplifier now powers the system to within 1.75 dB of the max SPL of the L1 Classic. Several other changes were made to the signal processing and acoustical sections to further reduce this small difference. Particular attention was paid to this change and many A/B comparisons were conducted by Bose to confirm that there was no significant audible difference between the two systems.

Source: L1 Model I

Note: The L1 Model 1S is not as loud or project as far as the L1 Model II. The Cylindrical Radiator® in the L1 Model 1S has twelve drivers. The others have 24 drivers.

I'm looking at combining an old one with a newer one. 

You will notice the L1 Model II projects the mid-high frequencies more evenly than the older models when listening from the extreme left and right. 

It still does it's job, but worried about any conflicts. 

You can put older and newer models on the same stage without issues. Is that what you need to know?

Can one put the columns of either generation in either 'foot' for example.

The Cylindrical Radiator®s (columns) of the L1 Classic/Model I (with the big base) are not compatible with the later models (L1 Model 1S and L1 Model II). However, you can use the B1 or B1 bass modules with any of these models.

Does that help?
ST

Great info thank you.  What you're telling me is that no problem combining on stage; you can mix and match with the bass speakers but do not mix the columns between the two due to impedence changes.  So if I go with this setup, I'll have to be careful to label columns to avoid mix & match issues. 

 

Hi, John Chesher.

John Chesher posted:

Great info thank you.  What you're telling me is that no problem combining on stage;

Yes. You've got it.

you can mix and match with the bass speakers

Yes.

but do not mix the columns between the two due to impedence changes. 

Yes - don't mix up the columns.

So if I go with this setup, I'll have to be careful to label columns to avoid mix & match issues. 

There are labels on the back of the L1 Model II Cylindrical Radiator® sections.

However, I use colored tape. It's easier to spot on stage. I also put some tape on the carry bags. That means I don't have to look inside the bags if I'm just taking one system out to a gig.

ST

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