Bryston SP1.7 Operations Instructions download pdf (Page 33)

APPENDIX A - SP1.7 Surround MODES

Pressing the MODE button will illuminate the LED and let you sequentially select one of the many available

decoding modes for 2 channel signals. These special modes are designed to expand your enjoyment of almost

any 2 channel music source and many other 2 channel signals. You are encouraged to experiment with the

options on various sources. Not all will supply something you may like, but there are so many variables that it

does pay to take a few moments to listen to the options. The custom SP1.7 Surround Modes use a set of DSP

algorithms to create a set of simulated signals using the original left and right 2 channel data and feeds these to

the to centre and surround speakers.

Surround Modes

Hall. This Sound Field Mode emulates a medium or large concert hall. It provides a longer reverberation time

than other modes and gives the effect that music is heard at a greater distance from the performers. It is ideal for

orchestral classical music and light orchestral music, such as that found on many film soundtrack albums, but

this mode will generally sound a bit muddy on rock or pop music.

Theatre. This Sound Field Mode simulates a room larger than a club, and it is intended to simulate what you

would hear in the front rows in a medium-size theatre. The reverberation here is not overly obtrusive, since a

theatre is intended for clarity of speech. This mode is suited for opera, rock, easy listening music, and any music

you might hear in a theatre.

Stadium. This Sound Field Mode provides a prominent “slap echo,” emanating largely from the rear, and it

gives a lively effect especially on solo instruments such as bass guitar. This mode is unsuitable for speech as the

echo destroys intelligibility. The sound is “big” but slightly artificial — it is suitable for stadium rock, and other

music that one would hear in a large stadium environment.

Club. This Sound Field Mode is intended to simulate being fairly close, around 10 feet away, in a small

intimate club setting with a moderate amount of reverberation that does not destroy clarity. The result is a bit

colored for speech due to the small room size, but it is quite suitable for jazz groups, cabaret, small-venue rock

‘n roll, and a small disco venue where dance music is played. This mode can also be used for classical chamber

music and solo instrumental music of most kinds.

Church. This Sound Field Mode simulates a large, spacious acoustic space with a very long reverberation time.

It is well-suited to organ music, choral music, and New Age music. It is too reverberant for most other kinds of

material, but it is very spacious for material it is suited to.

Natural. This mode enhances the basic stereo reproduction by using the inherent acoustics recorded within the

source material. If the source material was surround encoded or recorded in an acoustically oriented manner

(such as a lot of classical music and many live recordings) this mode can provide truly spectacular effects and

an enhanced sense of the space in which the music was being performed.

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Bryston SP1.7 Operations Instructions Page 33