What are high and low level inputs?
Speaker level inputs are used when you want to connect an amplifier to your factory radio or an aftermarket radio that does not have low-level (RCA) inputs. It allows you to use the signal coming from the speaker outputs as an input source for the amplifier.
If your receiver does not have a subwoofer output, you will need a subwoofer with inputs (usually called “high-level inputs” or “speaker level inputs.”) Run speaker wires from your receiver (or your front left & right speakers) to the subwoofer's high-level inputs.
- The subwoofer is hooked up to the receiver with a single interconnect cable. Stereo receivers, pre-amps, and integrated amplifiers rarely have subwoofer output jacks or offer bass-management options. So instead of using those connections, we'll use the subwoofer's speaker-level, aka "high-level," inputs.
- LFE connection to a home theater receiver. This is the simplest and most common connection. It works for any receiver or amp with a dedicated subwoofer output. Use a subwoofer cable to connect your receiver's subwoofer output to the LFE (low frequency effect) input on the sub.
- Set up Sound Sync with a wireless connection
- Turn on your Sound Bar.
- Select LG TV function by using FUNC on the remote control or F on the unit until the correct function is selected.
- Set up LG Sound Sync (Wireless) on the TV. Refer to your TV's instruction manual for detailed steps.
A: A line output converter, or LOC for short, converts a speaker-level output signal into an RCA preamp-level signal. This lets you connect the radio to the amplifier. It can also be used to connect a new radio to a car's factory amp (see below).
- Both mic and line level audio refer to the voltage level of an audio signal. Wired and wireless microphones are typically connected to mic-level inputs, while most other audio devices — such as mixers and outputs of mic preamps — use line level. Microphone level is usually specified between -60 and -40 dBu.
- Mic level is the voltage of signal generated by a microphone. This is the lowest, or weakest, level signal of the four and requires a preamplifier to bring it up to line level.
- Although keyboards and guitars do not output at the same level they are usally somewhere between mic and line level. To take the signal of an instrument to line level an active DI (Direct Injection or Direct Input) Box is required.
Bridging refers to combining two (four) channels of an amplifier into one (two) channel(s) with twice the voltage. A two channel amp can be bridged to one channel, and a four channel amp into two channels. Bridging the channels increases the power output. To clarify, you cannot bridge a monoblock amplifier!
- Try Turning Off Phone Noise Cancelation in iOS. A feature called “Phone Noise Cancellation” was introduced to the iPhone with iOS 7 which aims to reduce background ambient noise when on a phone call, but for some users it can sound strange and make their phone calls sound weird, or worse.
- This is usually achieved by using two or more independent audio channels through a configuration of two or more loudspeakers (or stereo headphones) in such a way as to create the impression of sound heard from various directions, as in natural hearing.
- The audio out is an analog signal meaning you could directly plug headphones or speakers to that port and get sound, because it is outputting an analog signal. So you have to plug the optical cable into a device that converts digtal data into analog sound.
Updated: 18th November 2019