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19
676
Application Guide
Direct Instrument Recording Application
Use this configuration to record the direct signal from an electric guitar or bass using the 676’s Hi-Z INSTRUMENT INPUT.
In this configuration the direct signal will still pass through the tube gain stage, making it great for recording harmonically-rich
bass and guitar tracks!
Application Notes:
• The INSTRUMENT INPUT must be enabled on the front panel using the button located next to the jack.
• Either the PREAMP output, COMPRESSOR / LIMITER output, or both outputs can be used in this application. Use the
COMPRESSOR / LIMITER output if you wish to process the signal with the 676’s built-in compressor and/or limiter.
When using the compressor/limiter, use both jacks to have a backup of the uncompressed signal, for parallel compression
applications, or for recording the uncompressed version and sending the compressed version to the musician’s headphone
mix.
• A signal processor can be inserted in the PREAMP INSERT. Here you can connect a favorite compressor, EQ, or any other
signal processor you wish to insert after the preamp.
PEA K
EQ
EN ABL E
COMP /LI M
EN ABL E
NAR ROW
CO NTOUR
SI DECH AIN
EN ABLE
OVE REASY
DI GITAL
OUTPUT
POW ER
|
20d B
PAD+48 V
POLARITY
INV ERT
80 Hz
LOW CU T
+
0
–
PEAK
LIM IT
GAI N
dB
+55
+25 +50
+40
-
∞
POST TUB E
ATTE NUATI ON
dB
-
∞
0
-30 -5
-15
LOW
dB
-15 +15
0
MID
dB
-15 +15
0
HI GH
dB
-15 +15
0
AUTO
RE LEASE
dB/sec
4k 10
400
1�5k 70
ATTACK
dB/msec
400
80
200 10
1
LI MIT ER
dBu
RED: 96kHz
GREEN: 48kHz
YELLOW: 44�1 kHz
-4
+2 +18
+10
OFF
TH RESHOLD
dB
-40
0
+20
-10
-20
-30 +10
RATI O
1:1 ∞:1
1�5:1 3:1
2:1
1�2:1 8:1
MAK EUP
GAI N
dB
-20 +20
0
-10 +10
INSTRUMEN T INPUT
ENABLE
CLASS “A” VAC UUM TU BE WITH HIG H VOLTA GE G AIN
ME TER SE LECTION
IN PUT OUTPU T G�R�
FR EQ
Hz
1k
100 8k
200 2k
Instrument Input
Enabled
Electric
Guitar
or Bass
Signal Processor
InOut
Param etric EQ
GAIN
dB
-20 +20
-10 +10
0
BYPASS
POWER
OUTPUT
GAIN
dB
-15 +15
0
FREQ
Hz
100 1k
250 630
500
LOW
GAIN
dB
-15 +15
0
FREQ
Hz
150 4k
300 1k
630
MID
GAIN
dB
-15 +15
0
FREQ
Hz
1�5k 20k
2k 10k
6k
HIGH
OUT
or Tape RecorderAudio Interface
Insert Cable
Ch. 2Ch. 1
Optional
Send (Tip)
Return (Ring)
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