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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
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,