Sony STR-DE815G Fm Stereo/fmam Receiver

1. Turn off the A/V receiver.
2. Connect the speaker wires to the speaker terminals
on the rear of the A/V stereo receiver.
3. Connect the other end of the speaker wires to the
corresponding speakers.

A subwoofer (sub) is speaker, that is dedicated to the
reproduction of low-pitched audio frequencies most
commonly referred to as bass.

- Passive Sub: Passive subs are called passive because
they need to be powered by an external amplifier or
Audio/Video (A/V) receiver . This is similar to traditional
speakers. The important thing to remember about a
passive sub is that since the sub needs more power to
reproduce low frequency sounds, the amplifier or A/V
receiver needs to be able to send enough power to
sustain bass effects reproduced by the sub without
draining the power supply in the A/V receiver or
amplifier.

- Active or Powered Sub: This type of sub is a self-
contained speaker and amplifier. The speaker and
amplifier are matched to for optimal performance and
both are housed in the same enclosure. This takes a lot
of the power load away from the A/V receiver and
allows the receiver or amplifiers to just power the mid-
range and tweeter speakers.

NOTE: Because each of these steps represents a
possible solution to this issue, check the surround
sound for the rear speakers after completing each step.
1. Verify that the rear surround speakers are properly
connected to the Audio/Video (A/V) receiver.
2. Perform a test tone operation to check if the speakers
are functioning correctly
3. Increase the rear speaker volume or surround speaker
settings to maximum.
4. Try selecting a different size (small or large) for the
rear surround speakers in the menu.