Drawmer 1977 Manuel de démarrage rapide - Page 2

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Layout
Congratulations on the purchase of your Drawmer 1977, our most comprehensive channel
strip to date. The 1977 front panel is populated left to right firstly with an ultra clean
preamplifier which incorporates mic, line and instrument D.I. with 66dB of stepped gain, and
also mic matching via switched impedance that brings out the best of every mic in your studio.
In the centre of the panel is an incredibly precise three band parametric equaliser that allows
for subtle fine tuning through to signal sculpting, and underneath this a silky smooth soft knee
compressor which incorporates our trademark 'Big' and 'Air' features and also the ability to
dial in as much warmth as you desire via the 3 types of variable harmonic saturation. A switch
swaps the location of the EQ and compressor in the signal path.
To the right of the unit comes the output section, this includes a wet/dry mix for parallel
processing that allows you to easily dial in how much EQ and compression is used via a single
knob, plus a fade control and large backlit VU meter to achieve perfect output levels.
The result of all these features is a modern take on vintage gear that gives you an incredible
degree of control over
E.Q.>COMP SWITCH
the clarity, tone and
PREAMPLIFIER
E.Q.
160
+6
+12
115
0
30
36
+18
24
42
32
65
75
-6
+24
w a r m t h o f y o u r
18
48
55
12
54
PGM
-12
+30
60
EQ>
45
6
-18
0
66
+36
16
130
COMP
Hz
40
-24
+42
recordings, helping
GAIN
O REV
FREQ.
IN
FREQUENCY
COMPRESSOR
MIC Z
LINE
2.4k
COMP
>EQ
0
you to capture perfect
INSTRUMENT
600
200
7
MIC
+48V
13
audio every time.
20
INSTR.
INSTR. THRU
SELECT
THRESHOLD
PRE-AMP
COMPRESSOR
Controls
PREAMPLIFIER
The peamplifier section is found on the left of the 1977 front panel. A
Source Select six position rotary switch not only selects Instrument D.I.,
Line or Mic sources, but also provides three settings of load impedance at
200, 600 and 2.4k Ohms to aid the matching for a dynamic microphone. In
addition, +48V Phantom Power is available to power a condenser
microphone.
NOTE: DO NOT ACTIVATE THE +48V SETTING UNLESS THE
MICROPHONE REQUIRES IT.
An Instrument Input is located in the bottom corner via a 1/4" jack, this is
excellent for use with both active and passive guitar pickup systems as well
as other instruments, such as electronic keyboards, this also has a through
output that provides an unaltered instrument signal . Microphone and line
inputs are found on the rear via XLR's. A twelve position switch adds Gain in
6dB steps from 0dB to +66dB, making it incredibly easy to have total
control over levels.
The section also includes a Phase Reverse switch that is used should there
be polarity issues, and a variable High Pass Filter that attenuates the audio
between 16 and 130Hz at a slope of 12dB per Octave to remove rumble
etc. that can be switched in or out of the signal path.
EQUALISER
OUTPUT
LOW
MID
HIGH
1.5k
4k
230
1.2k
2k
2.8k
7k
PEAK
0
0
0
1.2
1.5
1.7
2
2
2
2
1.75k
2
2
350
12dB
800
2.6k
11k
12dB
4
4
1
2
4
4
4
4
10 7 5
3
0
3
20
9dB
+
550
6
6
400
5k
.7
2.3
6
6
1k
15k
6dB
6
6
60 80100%
EQ
20
40
6dB
0
10
10
.4
2.6
10
10
10
10
680
250
10k
620
18k
V U
.25
2.75
12
12
12
12
12
12
725
/Octave
dB
O/L
Octave
dB
O/L
/Octave
dB
Hz
140
Hz
13k
530
Hz
20k
CUT/
CUT/
CUT/
SLOPE
BOOST
FREQUENCY
BANDWIDTH
BOOST
FREQUENCY
SLOPE
BOOST
IN
20
15
10
7
5
3
2
1
G.R.
SATURATE
5
-dB
5
3
10
20
.375
4
6
3
5
0
10
4
6
4
6
2
2
.25
.750
0
2
5
5
50
3
7
8
3
7
5
5
14
1.5
. 1 5
1.25
2
8
4
12
+10dB
2
8
8
8
COMP .
PAD
1
. 1
7
16
1
9
20
10
22
1.2
1.5
1
9
1
10
.2
100
2
.05
10
20
WET
DRY
OFF
12
40
:1
mS
Sec
0
10
dB
dB
dB
GAIN
BIG
AIR
RATIO
ATTACK
RELEASE
PGM.
TYPE
LEVEL
MAKE-UP
IN
VU
MIX
FADE
SATURATE
OUTPUT
The 1977 has very comprehensive Equaliser and Compressor stages that
follow the Gain stage. This switch allows the signal path to either route
through the EQ first or the compressor first, as each way creates a distinctly
different tonal quality, and colouration depending on the setting.
The 1977 has a fully parametric three band EQ located top centre of the
front panel. Each band has fully variable frequency that allows you to sweep
and pinpoint specific frequencies (set at LOW, 40Hz to 725Hz, MID, 140Hz
to 13kHz and HIGH, 530Hz to 20kHz) and 12dB's of Cut and Boost at the
frequencies set within the band. In addition, the MID Band has a fully variable
Bandwidth control (0.25 to 2.75 Octaves) that allows you to either tune into
problem frequencies at the narrow setting, or make more musical
alterations at the wider setting.
In addition the LOW band has a Slope switch that determines how "fast" the
signal is attenuated at the Low frequencies, set in dB's per octave, and at 6,
9 and 12dB's plus PEAK. 6dB being more subtle and musical, with 12dB
being more "focused" but noticeable. The Peak setting adds a narrow bell
shaped boost to the 12dB per octave low band filter at the knee frequency
Connection
The 1977 will be supplied with a
power cable and an integral fuse
suitable for domestic power
outlets in your country. If the fuse
blows or the unit is to be used with
a different mains operating
voltage see the User Manual for
instructions.
DIGITAL AUDIO
DIGITAL AUDIO
WORKSTATION
WORKSTATION
Connector Wiring
XLR INPUT
XLR OUTPUT
2
1
(FEMALE)
(MALE)
1
2
3
3
DRAWMER
IF GROUND HUM LOOPS
OCCUR DISCONNECT
GROUND HERE ON ONE
CHANNEL
STRIP
END OF CABLE
PREAMP
(COLD)
+ (HOT)
DIRECT
SCREEN
FOR UNBALANCED OPERATION CONNECT
PIN 3 AND PIN 1 TOGETHER
E.Q.>Comp / Comp>E.Q.
E.Q.
WARNING:
RISK OF ELECTRIC SHOCK!
DRAWMER
115V-T
1
A
DO NOT OPEN. LIVE PARTS INSIDE.
THIS EQUIPMENT MUST BE EARTHED.
230
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICE TO QUALIFIED PERSONNEL.
230V=T250mA
SERIAL #
DATE CODE
FUSES TYPE:
STANDARD - IEC127-2
RATING:
230V=T250mA/115V=T500mA
CAUTION:
AC POWER ONLY
TO REDUCE THE RISK OF FIRE,
DRAWMER ELECTRONICS Ltd
REPLACE FUSES ONLY WITH THE
ROTHERHAM,
SAME TYPE AS SHOWN
230V/115V
50/60Hz 60 VA
ENGLAND.
CH 2
AC POWER
FUSE RATING
FUSE:
50/60Hz
115V
T315mA
IEC127-2
230V
T160mA
20 x 5mm
WARNING:
THIS EQUIPMENT MUST BE EARTHED.
RISK OF ELECTRIC SHOCK! LIVE PARTS INSIDE.
REFER SERVICE TO QUALIFIED PERSON.
DO NOT OPEN. NO USER SERVICEABLE P ARTS INSIDE.
CAUTION:
AC POWER ONLY
TO REDUCE RISK OF FIRE REPLACE
FUSES ONLY WITH THE SAME TYPE AS SHOWN
OUTPUT
INPUT
Rotherham ~ S. Yorkshire ~ England
EQ for De-essing or Frequency Conscious Compression
to 1977 INSERT
1 SCREEN
SEND
2 HOT
TRS to XLR Y Lead (EQ insert)
3 COLD
Not all insert points are
1 SCREEN
wired the same - check
RETURN
2 HOT
your user manual
3 COLD
just before it rolls off. Especially useful on kick drums, it magnifies and gives
extra weight to the hit whilst still filtering out any subsonic junk.
Similarly the High band also has a Slope switch that attenuates the High
frequencies in much the same way as the Low slope, at 6dB or 12dB's per
octave.
In between each E.Q. band is an overload LED that illuminates to indicate
that the E.Q. section has too much overall gain in total and one, or a
combination of the three cut/boost controls should be reduced.
A fully hardwired bypass switch toggles the E.Q. section to be active or not,
and is best used for A/B comparisons, or to remove the E.Q. stage from
the signal path altogether.
A Compression section is located at the centre bottom of the 1977 front
panel with familiar controls such as Threshold, Ratio, Attack and Release,
plus a Gain Reduction Meter, making setup easy & intuitive, as well as an
integrated Saturation section to add various levels of warmth.
Threshold (-40.0dB to +20dB) determines the input level above which soft
knee compression takes place, whilst Ratio determines the amount of
compression to be used: 1:1 provides no compression, 4:1 moderate &
10:1 is approaching limiting.
DISCONNECT GROUND
DISCONNECT GROUND
HERE IF GROUND
HERE IF GROUND
HUM LOOPS OCCUR
HUM LOOPS OCCUR
NEGATIVE
NEGATIVE
(COLD)
(COLD)
POSITIVE
POSITIVE
CHANNEL
(HOT)
(HOT)
STRIP
OUTPUT
INPUT
SCREEN
SCREEN
OUTPUT
SIDE CHAIN
PREAMP O/P (CLEAN)
INPUT
MIC
LINE
CH 1
DRAWMER
STEREO PARAMETRIC
EQUALISER
DRAWMER ELECTRONICS Ltd
OUTPUT
INPUT
1/4" JACK -
1/4" JACK -
SIDE CHAIN INSERT
INSTRUMENT INPUT
TIP
SEND
HOT
RING
RETURN
SCREEN
SCREEN
SLEEVE
COMPRESSOR
cont.......