3
Warning
- To prevent fire or electric shock hazard, do not expose the
unit to rain or water.
- Use only with the supplied power transformer.
- Do not cycle power at high volume settings as this
could possibly cause loud turn on/off surges
This package includes:
The SVS-1B, AC adapter, an audio connecting cable and this
manual. If any of these items is missing or damaged, contact
Sima customer service at 800-345-7462.
22
What is the difference between the SVS-1B Volume Stabilizer and compressors,
companders, limiters, expanders, and automatic gain controls?
The key difference is in the purpose of how each used.
- Compressors are typically used for two reasons: 1) To be part of a COMPANDing system to
eliminate tape hiss (in which music is COMPressed then recorded on to tape and exPANDED
when played back) and 2) To make radio stations sound as loud as possible. Here multi
band compressors are used which maximize loudness at the expense of affecting the
spectral content of the music; hence everything sounds flat and dull. The Volume Stabilizer,
on the other hand, has been designed to provide an improved sound for listening.
- Limiters simply clamp audio signals above a certain level, thus removing all music dynamics.
These are typically used at radio station to stay within FCC modulation limits.
- Expanders increase the dynamic range of music. These were popular when all music had to
be compressed to fit onto LPs and tapes (with 45 to 65 db of dynamic range). Now with
CDs, HiFi Video tape, DAT, MiniDisc, and DCC, it is no longer necessary to compress the
source. Music is now recorded with its full dynamic range.
- Automatic gain control devices are compressors with an infinite compression slope, so they
completely remove the dynamic range from music. In the MAX position, the SVS-1B also
provides a flat output vs. input, yet retains the instantaneous dynamics of the music.
Typical Questions
3
Warning
- To prevent fire or electric shock hazard, do not expose the
unit to rain or water.
- Use only with the supplied power transformer.
- Do not cycle power at high volume settings as this
could possibly cause loud turn on/off surges
This package includes:
The SVS-1B, AC adapter, an audio connecting cable and this
manual. If any of these items is missing or damaged, contact
Sima customer service at 800-345-7462.
22
What is the difference between the SVS-1B Volume Stabilizer and compressors,
companders, limiters, expanders, and automatic gain controls?
The key difference is in the purpose of how each used.
- Compressors are typically used for two reasons: 1) To be part of a COMPANDing system to
eliminate tape hiss (in which music is COMPressed then recorded on to tape and exPANDED
when played back) and 2) To make radio stations sound as loud as possible. Here multi
band compressors are used which maximize loudness at the expense of affecting the
spectral content of the music; hence everything sounds flat and dull. The Volume Stabilizer,
on the other hand, has been designed to provide an improved sound for listening.
- Limiters simply clamp audio signals above a certain level, thus removing all music dynamics.
These are typically used at radio station to stay within FCC modulation limits.
- Expanders increase the dynamic range of music. These were popular when all music had to
be compressed to fit onto LPs and tapes (with 45 to 65 db of dynamic range). Now with
CDs, HiFi Video tape, DAT, MiniDisc, and DCC, it is no longer necessary to compress the
source. Music is now recorded with its full dynamic range.
- Automatic gain control devices are compressors with an infinite compression slope, so they
completely remove the dynamic range from music. In the MAX position, the SVS-1B also
provides a flat output vs. input, yet retains the instantaneous dynamics of the music.
Typical Questions
