dbx 161 Buku Petunjuk - Halaman 8
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14
SPECI FIC ATIONS
-
161
INP UT
OUTPU
T
DI ST
OR
T
ION*
T
ype
Actual Impedance
Connector
Maxim um
Level
Type
A
ctual Impedance
Conn ecto
r
Max. Level
Bridging
(10
K-ohm
or
greater
Z)
Matc hing
(600-ohms)
Outp ut Level Adjust
(Continuous)
EQUI
VA
LEN
T I
NPUT
NO
ISE
(Unweighted)
ATTACK T IME**
(Time to
reduce signal by
63%
of
level
change)
RE
L EASE RAT
E**
COMPRE SSION
RA
TIO
TH RESH OLD
IN
DIC AT
ORS
M ET
ERI NG
Range
Function
Calibr ati
on
POWER RE QU
IRE
MEN TS
Unbalanced
25K-ohms
RCA
pin jack (phono connector).
+17dB (5.5V)
Unbalanced
100 ohms (typical);
wi
II drive
low
or high-Z loads.
RCA pin
jack
+18d8 (6.16V)
+16d8m (4.9V)
+20dB from unity gain point.
0.
75%
2nd
harmonic
at infinite
compression at +4dBm output
0.5
%
3rd harmonic typical at
infinite
compression ratio
-78dBm,
typical,
(input shorted).
15
milliseconds
for
10d8
level change above threshold. 5
milliseconds for
20dB
level
change above threshold. 3 milliseconds for
30d8
level
change.
120dB/second
Continuously
variable from 1: 1 to
120:
1 (infinity!.
Continuously
variable from 10mV(-38dB)
to 3V(+12d8).
One L.E.D. indicator
turns
"on" to show when the
input
level is
below
set threshold
;
another turns "on" when the input
level
is above threshold.
A
steady-state, sine-wave
tone exactly at the threshold voltage causes both
L.E.D.'s
to
remain dimly illum
inated.
60d8 (-40dB to +20d8)
Switchable
for input level, output
level
or
gain change.
Rear
panel potentiometer
sets "OdB" for any
level
from
- 10dB(250mV)
to +10d8(2.5V).
117V
AC, 50 or
60Hz.
8 watts maximum.
*The wideband distortion
figures
appear to suggest that 3rd-harmonic
distortion
is
dominant.
Thus,
an
unweighted
T.H.D. (Total
Harmonic Distortion)
figure would be
similar
to the 3rd-harmonic
value. However,
the specific
breakdown of distortion
is more
informative.
3rd-harmonic
distortion
in the
160 Series decreases
linearly as the frequency
rises:
at
TOOHz 3rd-harmonic
distortion
is
1/2 the value
at
50Hz,
etc.
**Attack
and release rates automatically
vary
with rate of change of program level (attack and release rates "track"
the signal envelope).
Specifications are subject to change without
notice.
dbx PRODUCT WARRANTY
All
dbx products are covered
by
a
Limited Warranty.
Consult your warranty card or
loca
l
dealer
for
deta
ils.
FACTORY SERVICE
The dbx Customer Service Department
is prepared to
give add itional assistance in the use of th is product. All
questio ns regarding inter facing db
x
equipment with your
system, service informa
t
ion or info rmation on special
applicat ions will be answered
.
You may cal
l
during
normal business hours
-
Telephone:
617-964-3210
or
write to:
dbx
, Inc.
71
Chapel
Stre et
Newton
,
MA
0219
5
Attn
:
Customer Servic
e
Department
Should it become necessary to have
y
our equ ipment
factory
serv
iced;
1. Please repack the unit
in
c luding a no
t
e desc ribing
the problem along with the day, month and year of
purchase.
2.
Send
the un it freight prepaid to:
dbx
, Inc.
2
24 Calvary Street
Waltham
,
MA 02154
Attn
:
Repair Departm ent
3. We recommend that you insure
t
he package and
send it via Un
it
ed Parce
l
Service wherever poss ib
le.
4
.
Please d irect
all
inqui ries to the dbx Customer
Service Department
.
Outs ide the Un ited States
-
contact your neares
t
dbx
dealer for the name of an authorized
repair ce nter.
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