L1 Model II

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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.

Best Connections from Soundcraft ui24 Mixer to L1 Classic

Hello All,

   I am in a band that now uses 2 L1 Classics. We have a Soundcraft Ui24 digital Mixer that we put everything through. 2 Guitars acoustic and electric, Keys, Bass, Roland e-drums, 5 vocals. I have read all of the connection threads here, but I haven’t been able to see any specfic to this Mixer.  

 

The Mixer has a L and R out in XLR and 1/4 inch and currently we have everything panned to the center. 

On  one of the L1s I have tried the XLR to XLR into Input 1 on the L1 to eliminate noise, however I think the line level feed is really exaggerating any noise in the system.  The other unit I am going 1/4 to 1/4 into input 1 .

Both L1 units are set on 58.

 

So my question is , What’s the best configuration to maximize the performance of the L1s with my Mixer?

 

I.E should I be going into inputs 3 or 4 with the outputs from the Soundcraft ui24 or should I stick to the 1/4 on 1 or 2?  From what I understand its a 19.5db output. But I could be off there. 

 

Looking your expert help on this one. We have a gig in a week and it would be great to have this dialed in prior.

Its taken us a while to finally upgrade to this level of equipment so now I want to make sure I have the configuration right!

Thanks so much,

 

Perry

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Hi Perry.

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

Perry F posted:

Hello All,

   I am in a band that now uses 2 L1 Classics. We have a Soundcraft Ui24 digital Mixer that we put everything through. 2 Guitars acoustic and electric, Keys, Bass, Roland e-drums, 5 vocals. I have read all of the connection threads here, but I haven’t been able to see any specfic to this Mixer.  

Thanks for all the great information.



The Mixer has a L and R out in XLR and 1/4 inch and currently we have everything panned to the center. 

Do you have the L1 systems behind the band? Here's why I'm asking.

The L1® Approach and the History of Amplification 



On  one of the L1s I have tried the XLR to XLR into Input 1 on the L1 to eliminate noise, however I think the line level feed is really exaggerating any noise in the system.  

How long are the cables from the Ui24 to the L1 systems?

If the cables are less than 20 feet, you may be okay with the 1/4 inch (6.3 mm) inputs on the L1 systems.

Normally you would prefer balanced connections, but in this case the signal from the Ui24 may be too high for the XLR inputs on the L1 systems.

The L1 Classic XLR inputs are designed for microphone level sources. A line level source is likely to clip them. 

Signal/OL LEDs: Channels 1 and 2

SignalOLLED.png

There are two LEDs on the PS1 Power Stand (Classic) / Model I near the Trim knob labelled Signal/OL -- one for Channel 1 and another for Channel 2.

These LEDs indicate when the signal level channel's preamplifier reaches certain important thresholds. The trim controls located near the LEDs adjust the amount of gain in the preamplifier.

The LEDs turn from off → green when the signal level exceeds a small amount.
The LEDs turn from green → red when the signal reaches a level that's about 10 dB below a level that would clip the preamp and cause objectionable distortion.

When the LED is off (but you are playing an instrument you think is connected to the PS1 or singing/talking into a microphone you think is connected): Increase the level of the trim control. If the LED still does not turn green or red, check instrument/microphone and cables to the PS1.

When you see green only: This indicates that there's some signal in the channel but not enough. While singing or playing the loudest you ever plan to in the performance, increase the trim level until the LED is only flickering red. This is the optimal gain.

When you see red most of the time: Decrease the trim level until you see only flickering red. This is the optimal gain.

The other unit I am going 1/4 to 1/4 into input 1

If you're not getting excessive line noise with the 1/4 inch connections, then it may be simpler to use those on both L1 systems. Note: all 1/4 inch inputs on the L1 systems are unbalanced. That's why I asked about cable lengths.



Both L1 units are set on 58.

That would be appropriate for DJ tracks at high volume (emphasis on lows and highs).

Use Preset 00. This will give you a flat response and let you control the EQ from the Ui24.



So my question is , What’s the best configuration to maximize the performance of the L1s with my Mixer?

I.E should I be going into inputs 3 or 4 with the outputs from the Soundcraft ui24 or should I stick to the 1/4 on 1 or 2?  From what I understand its a 19.5db output. But I could be off there. 

Use 1/4 inch inputs on channel 1 or 2. Set the trim so the LEDs are solid green with occasional flickers of red.



Looking your expert help on this one. We have a gig in a week and it would be great to have this dialed in prior.

Its taken us a while to finally upgrade to this level of equipment so now I want to make sure I have the configuration right!

Thanks so much,

Perry

Questions?

ST

ST thank you so much for the reply! That’s Great information !

OK so to answer your questions. And I’ll ask a couple more

 I am familiar with having the L1s behind us however we will be putting them out front at this venue. We all wear IEMS as we each control our own independent  mix in our ears. Sometimes the bass / guitars do not wear the IEMS but that is predicated on the venue. I know they are not necessary with the L1s but switching at this point would be difficult especially for the vocalists.

I plan on going no further than 25 feet as to maximize the 1/4 cable potential before noise. I recently purchased new 25 ft 1/4 cables with full shielding and heavy insulation.

THe information on the Trim is very interesting.  I have a question. 

Will making this adjustments MAX out the volume? I.E. I have a remote for each unit, will I be able to INCREASE or DECREASE the Volume from there? Or do these settings become null and void?

I think the SoundCraft UI24 has an output of 19.5db is this to high for these inputs?

What I am trying to achieve is the optimal setup for the L1s they are incredible and I would really like to be able to maximize them to their potential to deliver both super clear and if necessary high volume sound? I also have 4 B1’s in the mix I probably should have mentioned earlier.

Thoughts?

 

Thanks again,

 

-Perry

 

Hi Perry,

Perry F posted:

ST thank you so much for the reply! That’s Great information !

OK so to answer your questions. And I’ll ask a couple more

 I am familiar with having the L1s behind us however we will be putting them out front at this venue. We all wear IEMS as we each control our own independent  mix in our ears. Sometimes the bass / guitars do not wear the IEMS but that is predicated on the venue. I know they are not necessary with the L1s but switching at this point would be difficult especially for the vocalists.

I plan on going no further than 25 feet as to maximize the 1/4 cable potential before noise. I recently purchased new 25 ft 1/4 cables with full shielding and heavy insulation.

Sounds good.



THe information on the Trim is very interesting.  I have a question. 

Will making this adjustments MAX out the volume? I.E. I have a remote for each unit, will I be able to INCREASE or DECREASE the Volume from there? Or do these settings become null and void?

You don't need the R1 Remote - and I don't use it when I'm working with third-party mixer. It's simpler to do without.

Will the L1 Classic still work without the R1 Remote?

The PS1 Power Stand (Classic) / Model I continuously senses activity at all preset selectors and what is connected at the input/output jacks.  The PS1 Power Stand (Classic) / Model I can however function without the R1 Remote. If you power the PS1 Power Stand (Classic) / Model I on without the R1 Remote connected, it will operate as if the R1 Remote was connected and at a fixed setting of 12 o'clock (center position) on all the control knobs.

Alternatively, if the unit is powered on with the R1 Remote first connected and the user then disconnects the R1 Remote, it will retain the last settings of the R1 Remote before you disconnected it. This is helpful in the case where sharing may be necessary.



Full Power

Even without the R1 Remote control the system can get to full output if the input trims are carefully set.

If you do proper gain staging, the system will get to full output with all knobs at 12 o'clock. Since proper gain staging is not trivial, we provide the extra gain to take up the slack if the input is not quite hot enough.





I think the SoundCraft UI24 has an output of 19.5db is this to high for these inputs?

It will be fine with the 1/4 inch inputs (without the R1 Remote).

It might be too high for the XLR input.



What I am trying to achieve is the optimal setup for the L1s they are incredible and I would really like to be able to maximize them to their potential to deliver both super clear and if necessary high volume sound? I also have 4 B1’s in the mix I probably should have mentioned earlier.

Thoughts?

Thanks again,

-Perry

Be sure to rehearse the hardware setup before the gig so there are no surprises.

ST

ST thanks for this great information

tjsybsll makes a lot of sense.

i think this is my last question.

 

My mixer has both digital controls and manual external control knobs for volume. Is there a rule if thumb on where to set the manual control knobs? 

I would like to set the knobs and forget it but I’m not sure if that’s right? 

Thanks again for all the great information ! 

 

Perry

Hi Perry,

I looked at the ui24r owners manual and could not find any information about the Mix L / Mix R controls.

It looks like they have emphasized the mark at 2:00 o'clock. I'd probably set the control there and control the volume using the software interface. 

While I was looking at this, it raised the possiblility, you might be able to use XLR cables. By turning down the Mix L / Mix R controls, you can lower the output levels enough to be compatible with the XLR inputs on the L1 Classics.

You'll have to experiment with these ideas. I don't have any way to simulate the outcomes.

Please let us know how things work out for you.

ST

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