Connect T1 master out and aux out to channel 3 and channel 4 on L1 classic for stereo?

Portable PA
1

I would like to know if connecting master out and aux out from T1 to channel 3 and channel 4 on L1 classic will produce stereo sound!

2

Hello Hanu Karlapalem,

 

Quick answer:  With one L1 Classic, no.

 

A single L1 Classic is a monaural speaker system.  All signal inputs to channels 1, 2, 3 and 4 are mixed to mono in the digital signal processor (DSP).  The mono output is sent to three power amplifiers:  Two for frequencies above 180Hz, one to each tower section; and one for frequencies below 180Hz to the bass module(s).

 

The only way to achieve stereo is to send distinct signals (e.g., left and right) to two distinct speakers.  Then the listener's perception of stereo depends on the speaker location and design, whether large speakers, two separate L1 Classics, small speakers in a clock radio, or tiny transducers in earbuds.

 

Does that help?

3

Thank you. Your answer is very clear. So, I guess that I can connect one L1 Classic and one L1 Model 1S for stereo! What is the best set up then?

4

Hello again Hanu Karlapalem,

 

You can use the master out and aux out from the T1 to send each half of a stereo signal to a different system.  The Bose Portable Professional PA Encyclopedia addresses the particulars of this setup at this page.  Scroll down to the "Variations" section to see an example of the physical connections for an L1 Classic or Model 1 paired with a Model II or Model 1S.

 

You would run one 1/4" lead to either channel 3 or 4 of your L1 Classic, and the other lead to the L1 Model 1S.  You can connect your T1 to the Model 1S either of two ways:

  1. Connect the T1 to the Model 1S via a ToneMatch cable, which provides both power and the master out signal.
  2. Use a separate ToneMatch power supply with your T1 and run a 1/4" TRS to 1/4" TRS cable from the 1/4" master out to the analog input on the Model 1S.

NOTE:  The channel 3 and 4 inputs on the Classic are unbalanced inputs, so it doesn't matter if your 1/4" cables are TRS or TS.  Also, because of the design difference in the Classic and Model 1S arrays, you will need to carefully adjust the volumes of the two signals.  Your stereo "sweet spot" may not be directly between the two systems, so just experiment to get the sound you want.

 

Does that help?

 

5

Thank you very much.