Sony ST-RV555ES Operating Instructions Manual page 19

x Center speaker size (CENTER)
Initial setting : LARGE
• 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 center 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 center speaker, select "NO". The
sound of the center channel will be output from the
2
front speakers.*
x Rear L/R speaker size (REAR L/R)
Initial setting : LARGE
• If you connect large speakers that will effectively
reproduce bass frequencies, select "LARGE". Normally,
select "LARGE". However, if the front speakers are set
to "SMALL", you cannot set the rear L/R speakers 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 rear channel bass frequencies from the
sub woofer or other "LARGE" speakers.
• If you do not connect rear L/R speakers, select "NO".*
z
*1~*3 correspond to the following Dolby Pro Logic modes
1
* NORMAL
2
* PHANTOM
3
* 3 STEREO
x Rear center speaker size (REAR CTR)*
Initial setting : NO
This parameter can be set when the center speaker is set to
"NO" and the rear speakers are set to "LARGE" or
"SMALL". This setting is effective when NORMAL
SURROUND or VIRTUAL MATRIX 6.1 is selected.
• 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 rear center speaker to
"LARGE".
1
• 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.
However, if the rear L/R speakers are set to "SMALL",
the rear center speaker is automatically set to "SMALL".
• If you do not connect a rear center speaker, select "NO".
* This parameter is not available when "Rear L/R
speaker size (REAR L/R)" is set to "NO".
z
About speaker sizes (LARGE and SMALL)
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.
3
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 39.
19