Connecting the Level ONE Powered Subwoofer
Line Level Connection
The Level ONE Powered Subwoofer allows for two connecting options. Most new home theater receivers include a dedicated LFE or Subwoofer Line Level Output which should be connected to the Line Level inputs on the subwoofer. Since this type of output on your receiver is a mono output (single RCA jack), use the included mono to stereo adaptor to convert the mono signal into two identical signals, then connect the included stereo RCA cable from this adaptor to the Left and Right line level inputs on the receiver. The Level ONE Powered Subwoofer requires that both the Left and Right Line Level Inputs receive a signal to operate properly.
Speaker Level (high level) Connection
If your receiver does not provide a dedicated LFE or Subwoofer output, you can connect the powered subwoofer using the Speaker Level inputs. Connect regular speaker cable (18 gauge or thicker) to the left channel output on the receiver and connect the other end to the left (L) speaker level input on the subwoofer. Similarly connect the right channel from the receiver to the right (R) speaker level input on the subwoofer. Then connect the left and right speakers from the speaker level outputs on the subwoofer (instead of connecting the speakers directly to the receiver). This setup allows the low frequencies to be reproduced by the subwoofer, while passing the full frequency range on the left and right speakers.
Line Level Connection | Speaker Level Connection |
Using the Level ONE Powered Subwoofer Controls
Power
The power switch has two positions, off and on. When the power LED is lit, the power is on.
Level
The level control adjusts the volume of the subwoofer. When connecting the subwoofer using the Line Level inputs, first set the volume level for the subwoofer in the receiver to a high enough level that the subwoofer receives a strong signal. In most receivers this usually means setting the subwoofer volume almost all the way up. Then, with music playing and the subwoofer’s Level control turned all the way down, slowly turn the level control on the subwoofer up until its volume blends well with the other speakers.
If you connect the subwoofer using the speaker level (high level) inputs, set the level control to a level that balances the subwoofer with the other speakers connected to the same output channel. Once set, the level control should not require further adjustment.
