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6 Specifications
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6 – Specifications
The PAN controls don’t work
If you’re listening through headphones, is the Porta02’s MONO
switch pressed?
If you’re listening through speakers, is there a
MONO switch on
the amplifier which has been pressed?
Recorded sound is distorted
when recording
When monitoring while recording, the sound will often be a little
different to when it is played back. A large amount of distortion
may be caused by recording at too high a level (shown by the meter
+6
indicator being lit all or most of the time). Adjust the TRIM
level and/or back off on the faders.
If the meter
+6 indicator is not constantly lit, you may want to
reduce the headphone level; you may be driving the headphones
too hard.
Recorded sound distorts on
playback.
Either the sound was recorded at too high a level, or the summed
level of all four tracks is too high. Try reducing the level of all
tracks so that the meter
+6 indicator is not constantly lit on play-
back (set
REC FUNCTION to SAFE). If one track only is dis-
torted, it was recorded at too high a level.
Tape sounds muffled on play-
back
The heads are dirty. Clean them (see 1.2.4, “Cleaning the heads”)
Pitch changes (wow and flutter)
The capstan and pinch roller are dirty. Clean the capstan and pinch
roller (see 1.2.5, “Cleaning the pinch roller”).
A stereo tape recorded on
another machine sounds really
strange!
You’re probably listening to tracks 1 and 2 forwards at the same
time as 3 and 4 backwards. Turn down the
OUTPUT LEVEL con-
trols of tracks 3 and 4.
If the sound is unnaturally “bright”, it’s quite likely that the tape
was recorded on the other machine using noise reduction.
Recommended tape type
Compact cassette tape, CrO
2
(Type II, 70µs EQ), C-30 to
C-90
Track format
4 tracks, 4 channels
Head configuration
1 x 4-track record/replay head (Permaloy)
1 x 4-track erase head (ferrite)
Motor type
1 x DC motor (capstan and reel motor)
Tape speed
1 7/8 in./sec (4.76 cm/sec)
Wow and flutter
0.18%
Fast wind speed
Approx 120 seconds (C-60 tape)
Power requirements
USA/CANADA: 120V AC, 60Hz
U.K./EUROPE: 230V AC, 50Hz
AUSTRALIA: 240V AC, 50Hz
Power consumption
7W, via the supplied PS-P2 AC adaptor
Physical dimensions (w x h x d)
305 x 64 x 205 (mm), 12.0 x 2.5 x 8.1 (in.), maximum
height (including controls) 80 (mm), 3.1(in)
Weight (main unit)
1.5kg (3.3lb)
MIC/LINE inputs (2 x 1/4" jacks)
Input level
Input impedance
–50dBV, TRIM at maximum; –10dBV, TRIM at minimum
50k
Ω