dbx 3BX III, Руководство по обслуживанию

Страница: 4 / 37

SPECIFICATIONS (performance minimums)
Expansion
To 50% increase,
maximum 12 dB upward
and 20 dB downward
Impact restoration
To +12 dB (upward
only), program-
dependent
Frequency response
+0.5 dB 20 Hz – 20 kHz,
any setting
Dynamic range 107 dB
Total harmonic distortion (THD), no
expansion
0.15%
Intermodulation distortion (IMD) IHF or
SMPTE
0.1%, any setting
Equivalent input noise –90 dBV
Attack rates
Program-dependent,
optimized for each band
Release rates
Linear expander program
-dependent, optimized;
impact restorer
adjustable
Maximum input and output 7 V
Notes
1) Specifications are subject to change without notice.
2) All data are for 20 Hz-20 kHz unless otherwise specified; line inputs
are driven by a source impedance of 1 k-ohms and outputs are loaded by
10 k-ohms in parallel with 1000 pF; all voltages are rms (root-mean-
square).
3) Dynamic range is defined as the difference between the maximum rms
output signal and A-weighted noise. All noise figures are A-weighted.
4) Frequency response figures are for pink noise (or music).
5) SMPTE IMD is measured with 60 Hz and 7 kHz mixed 4:1; IHF (difference-
tone) IMD is measured with 19 kHz and 20 kHz mixed 1:1; output 1 V.
6) Inputs and outputs have identical polarity.
7) All dbx home products are designed to be used with components whose
output impedance is less than or equal to 5 k-ohms. All units are
designed to drive loads of at least 5 k-ohms in parallel with 1000 pF or
less.