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发表于 2010-12-7 18:06:02
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GX-747个人认为非常漂亮,在民用级别上完全满足要求了,有待DBX版本的,可惜上次没有拍到,只好退而求其次,GX-646本人也非常喜欢。' r# i3 m- n( ^% x3 G8 V9 A
各项指标如下:
$ d2 O- P ?" ?7 }0 g+ m! q5 K7 W O5 [0 F+ W
Track System….4 Track 2 Channel Stereo System 9 u9 |0 D& `- ], _% h3 w4 }6 P
Reel Capacity....Up to 10” Reel
; I6 _2 e1 }$ S& |6 B8 VHeads....
6 G" l9 U1 P8 q! ]2 aGX head for recording x 2;
) s3 i; t+ q" m% G& W0 b' s, wGX head for playback x 2; * h$ s& Q# J' ] w2 h) q3 d/ T6 r
Erase head x 2 ' r- M0 C( j, z
Motors....! T% Q# w8 K# h0 u0 j
AC Servo motor for capstan drive x 1; 6 r2 F% X7 M) }! L
AC Eddy current motor for reel drive x 2 & T" J: f3 S3 u5 J7 H
Tape Speed....
, h( m1 T- i& N! [19 cm/s +0.8% (7 ½ ips.);
, }& ] c# @0 _& M. V6 m3 `! v7 r' @9.5 cm/s +1.0% (3 ¾ ips.)
) G9 q% S, t' [6 Q& e/ S7 QWow and Flutter....$ R' J2 D) Q1 U# {6 j3 Y* A
Less than 0.03% WRMS at 19 cm/s; * p1 d& V& }3 b( q
Less than 0.04%WRMS at 9.5 cm/s
4 N2 v5 K% H: ~8 |9 nTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 9 v8 D$ @+ ]; o ^: `
Frequency Response....$ \- K1 \/ i& m; F X
25 to 33,000 Hz +3 dB at 19 cm/s;
+ {/ ]( x# ~+ [) p! c, S: C1 H2 s25 to 26,000 Hz +3 dB (0 VU);
) F- a, A, j5 x1 r z25 to 33,000 Hz +3 dB at 9.5 cm/s;
1 ~) ~! j: R1 d% @- Q2 R25 to 15,000 Hz +3 dB (0 VU)
9 q; F# v6 H; P6 XSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
) S. }8 Q; z' Q% r$ F, \& f/ S0 R4 pDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
. m) \2 u2 f$ F' f' ~" fHarmonic Distortion....Less than 0.4% at 19 cm/s / N. K. H1 h+ E# J, y
Input....% N$ l1 g# a9 y' Z `2 ^
MIC: 0.25 mV; Required microphone impedance: 600 ohms; & G7 i" W0 T" A% \
Line: 70 mV 8 u( o- ~2 i; i" g
Output....1 x* z- `* U( Y# u, o+ v
Line: 410 mV; # ^, i4 o/ t4 Q/ u; P
Phone: 1.3 mW
' o( _# j$ u/ n$ T0 S) BPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
# L- w. l4 O+ b, |5 uDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
# Y$ t& I" H! D9 NWeight....23.2 kg (51.0 lbs) |
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