Amplifier Research 701R Manual del usuario - Página 6
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Imprimir páginaimpedance type (220K ohms). The effects return system feeds
into both main mixing busses and is intended for use when
returning signals from external devices to be mixed into the
main mixing busses.
STEREO OUT JACK (27)
The 701R Mixer is supplied with a highly usable stereo out¬
put jack for connection to recording decks or other outboard
equipment. Musicians/sound personnel will find this line-level
stereo output perfect for recording live performances and/or
rehearsals.
AUXILIARY INPUTS (28)
The auxiliary inputs are line level access points to the five
internal mixing busses. They are medium impedance type
(33K ohms) and are provided to allow parallel mixers or for
any other purpose that requires direct signal injection into the
internal mixing busses.
LINE CORD (29)
For your safety, we have incorporated a 3-wire line (mains)
cable with proper grounding facilities.
WARNING: IT IS NOT ADVISABLE UNDER ANY CIR¬
CUMSTANCES TO REMOVE THE GROUND PIN. IF IT IS
NECESSARY TO USE THE AMP IN A 2-PIN PLUG SYSTEM
WITHOUT PROPER GROUNDING FACILITIES, SUITABLE
GROUNDING ADAPTORS SHOULD BE USED. MUCH LESS
NOISE AND GREATLY REDUCED SHOCK HAZARD EXISTS
WHEN THE UNIT IS OPERATED WITH THE PROPER
GROUNDED RECEPTACLES.
LINE INPUTS (RCA) (30)
Channels six and seven function normally with microphones
or line level signals but also have additional (RCA) inputs. The
"in" position of the push switch which is located in the master
section allows an input signal to be patched into 6 and 7 from
the line inputs at the rear panel. With the switch in the "out"
position, channels 6 and 7 can be used with the normal mic
or line inputs. (Please check the specifications of any device
being patched in.)
SPECIFICATIONS
SUMMARY OF FUNCTIONS
7 ch in; Sub A & B out; sum out; 1
pre mon. out, 1 post effect (high/low
level) out; stereo out; 4 band EQ,
pan, +10 dBV LED each channel
MASTER
Effects & reverb return with pan,
effects & reverb to monitor;
dual/switchable LED ladders; stereo
(RIAA) phono inputs (switched to
ch. 6 & 7)
INPUTS, EACH CHANNEL
1 low Z balanced microphone; 1
high Z unbalanced line; 1 high Z
unbalanced (stereo ring) pre return
INPUTS, MASTER
1 high Z unbalanced auxiliary each
for Sub A, Sub B, monitor, sum, and
effects; 1 high Z unbalanced effects
return, stereo (RIAA) phono inputs
OUTPUTS, EACH CHANNEL
1 low Z unbalanced (stereo tip)
pre send
OUTPUTS, MASTER
1 low Z transformer balanced line &
1 low Z unbalanced line each for
Sub A, Sub B, monitor, and sum;
1 unbalanced (stereo jack) stereo
out; Rev F.S.; 1 low Z unbalanced
(high/low level) effects
CHANNEL MICROPHONE INPUTS
Mic Impedance: Low Z 600 ohms
balanced
Nominal Input Level: -26 dBM,
40 mV RMS
Minimum Input Level: -42 dBM,
6 mV RMS
Maximum Input Level: +8 dBM,
2 volts RMS
CHANNEL LINE (HIGH Z MIC)
INPUTS
Line Impedance: Hi Z 50K ohms
unbalanced
Nominal Input Level: -14 dBV, 200
mV RMS
Minimum Input Level: -30 dBV,
30 mV RMS
Maximum Input Level: +30 dBV,
30 volts RMS
CHANNEL RETURNS AND
AUXILIARY INPUTS
Line Impedance: Hi Z 33K ohms
unbalanced
Designed Input Level: 0 dBV,
1 volt RMS
STEREO LINE INPUTS (RCA)
Line Impedance: 50K ohms
Nominal Input Level: -14 dBV,
200 mV RMS
Minimum Input Level: -30 dBV,
30 mV RMS
Maxinum Input Level: +18 dBV,
8V RMS
EFFECTS RETURN INPUT
Line Impedance: Hi Z 100K ohms
unbalanced
Nominal Input Level: 0 dBV, IV RMS
Minimum Input Level: -14 dBV,
0.2V RMS
Maximum Input Level: +6 dBV,
2V RMS
SUB A, SUB B, MONITOR & SUM
BALANCED OUTPUTS
Load Impedance: 600 ohms or
greater
Nominal Output: 0 dBV, IV RMS
Maximum Output: +18 dBV,
8V RMS into 50K ohms load
+16 dBM, 5V RMS into 600 ohms
load
SUB A, SUB B, MONITOR, SUM &
EFFECTS (HIGH LEVEL)
UNBALANCED OUTPUTS
Load Impedance: 600 ohms or
greater
Nominal Output: 0 dBV, 1 V RMS
Maximum Output; +18 dBV, 8V RMS
into 50K ohms load
+16 dBM, 5V RMS into
600 ohms load
EFFECTS (LOW LEVEL)
UNBALANCED OUTPUT
Load Impedance: 10K ohms or
greater
Nominal Output: -12 dBV,
0.25V RMs
Maximum Output: +6 dBV, 2V RMS
The following specs measured with
a nominal input gain setting of
+14 dB all channels, all levels set at
0 dB, all EQ set flat, all Low Z
inputs terminated with 600 ohms, all
High Z inputs and all outputs
terminated with 47K ohms
Frequency Response
(Any in/out combination with
IV RMS output)
+0, -2 dB, 20 Hz to 30 kHz
System Hum & Noise
-84 dBV (High Z line inputs)
(All channels on) -80 dBV (Low Z
mic inputs)
Equivalent Input Noise
(20 Hz - 20 kHz, 250 ohms)
-126 dBV
Overall Distortion
(Any in/out combination,
20 Hz -
20 kHz IV RMS) Less than
.05% THD, TYP below .01%
Equalization
+15 dB 60 Hz & 15 kHz, shelving
+15 dB 400 Hz & 3 kHz, peak/notch
Crosstalk
Greater than 50 dB 1 kHz
Maximum Available Gain
+14 dB Sum Control
+14 dB Sub Control
+14 dB Channel Control
+30 dB Input Control
+14 dB Balanced Input Circuit
+86 dB Total
LED Readout Range
-21 to +6 dBV
(Switchable Sub A/Sum,
Sub B/Monitor)
Channel Status Indicator LED
Calibration
+10 dBV (Red)
Power Requirements
120V AC, 60 Hz, 20 Watts
(Domestic)