How is a ground loop best avoided?

By creating a single grounding point, usually at the measurement ground, you can avoid the potential for ground loops in the first place. While this may not always be practical to implement, given the physical location of the electrical components, it is a good guiding principle that will help you avoid most problems.

Can a L1 Model II accept two inputs?

The L1 Model II can accept two inputs. This makes it easy for two performers to connect their own T1®s to a L1 ® Model II Power Stand. The ToneMatch® connection is specifically designed for a T1 ToneMatch Audio Engine. The ToneMatch® cable is supplied with the T1 ToneMatch Audio Engine and uses a male Ethercon connector at both ends.

How does the ToneMatch connect to the L1 Model II?

For connecting the T1 ToneMatch Audio Engine to the L1 Model II. The port sends electrical power to the T1 and accepts digital audio from the T1. The connecting cable has a male Ethercon connection at each end that looks like this. The Analog input is a ¼ inch balanced input jack.

How big is the analog Jack on a L1?

The Analog connection is a ¼ inch phone jack. You can use this for a second T1® using the T1® Analog Master output (¼ inch phone jack). This connection is made with a standard ¼ inch jack instrument cable.

What does Trim do on a Bose L1?

Bass Module Out – Bass output signal for driving one or two B1 bass modules or one B2 bass module. Trim – Adjusts the level of the analog input signal. ToneMatch® port – Digital audio and power connection for the optional T1 ToneMatch audio engine. Signal/Clip LED – Indicates status of the analog input signal.

Why do I have a hum coming from my speakers?

Immediately after placing the amp in my system a very noticeable 60Hz hum starting pouring from my speakers. If this has happened to you the chances are it’s a ground loop between your Cable TV and another component in your system (like an amplifier or powered subwoofer).

Why does my amplifier hum when I lift ground?

If the related equipment is properly grounded, simply lifting signal ground between equipment, may cause enormous amounts of humming and potentially damage the input amplifier of the receiving equipment because of the flowing stray currents on the ungrounded equipment.

What causes the hum in reference system 3?

Then your problem is occurring at a later stage in the system (most likely a ground loop caused by the addition of an amplifier or powered subwoofer with a 3-prong power cable.) The final test is to unplug your Cable TV cable from the wall. Does the hum go away? It did in the case of Reference System 3. Eureka !

The L1 Model II can accept two inputs. This makes it easy for two performers to connect their own T1®s to a L1 ® Model II Power Stand. The ToneMatch® connection is specifically designed for a T1 ToneMatch Audio Engine. The ToneMatch® cable is supplied with the T1 ToneMatch Audio Engine and uses a male Ethercon connector at both ends.