Sony STR-DB1070 Operating Instructions (primary manual) - Page 21

Hooking Up and Setting Up the Speaker System x Surround back speaker size (SURR BACK) For STR-DB870, you can set this parameter only when the center speaker is set to "NO". • If you connect a large speaker that will effectively reproduce bass frequencies, select "LARGE". Normally, select "LARGE". However, if the front speakers are set to "SMALL", you cannot set the surround back speaker to "LARGE". • If the sound is distorted, or you feel a lack of surround effects when using multi channel surround sound, select "SMALL" to activate the bass redirection circuitry and output the center channel bass frequencies from the front speakers (if set to "LARGE") or sub woofer. • If you do not connect a surround back speaker, select "NO". • If you use the surround back speaker in the 2nd room, select "2ND ROOM". When the surround back speaker is set to "2ND ROOM", the center speaker is also automatically set to "2ND ROOM" (unless preciously set to "NO") (STR-DB1070 area code U, CA only). Tip Internally, the LARGE and SMALL settings for each speaker determine whether or not the internal sound processor will cut the bass signal from that channel. When the bass is cut from a channel, the bass redirection circuitry sends the corresponding bass frequencies to the sub woofer or other "LARGE" speakers. However, since bass sounds have a certain amount of directionality, it best not to cut them, if possible. Therefore, even when using small speakers, you can set them to "LARGE" if you want to output the bass frequencies from that speaker. On the other hand, if you are using a large speaker, but prefer not to have bass frequencies output from that speaker, set it to "SMALL". If the overall sound level is lower than you prefer, set all speakers to "LARGE". If there is not enough bass, you can use the equalizer to boost the bass levels. To adjust the equalizer, see page 36. x Surround back speaker single or double (SURR BACK L/R) (STR-DB1070 only) • When the center speaker is set to "NO" and you use the center speaker as a surround back right speaker and use the surround back speaker as a surround back left speaker, select "YES". • If you use only a surround back speaker, select "NO". x Sub woofer selection (SUB WOOFER) • If you connect a sub woofer, select "YES". • If you do not connect a sub woofer, select "NO". This activates the bass redirection circuitry and outputs the LFE signals from other speakers. • In order to take full advantage of the Dolby Digital bass redirection circuitry, we recommend setting the sub woofer's cut off frequency as high as possible. x Front speaker distance (FRONT) Set the distance from your listening position to the front speakers (A on page 19). x Center speaker distance (CENTER) Set the distance from your listening position to the center speaker. Center speaker distance should be set from a distance equal to the front speaker distance (A on page 19) to a distance 1.5 meters (5 feet) closer to your listening position (B on page 19). When this range is exceeded, the display blinks. If you make the setting while the display blinks, you cannot fully enjoy the surround effect. continued 21