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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。
4 w }+ t& z6 R* y3 y6 y9 V各项指标如下:
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+ N/ I: f- X! ~5 F- z4 {' sTrack System….4 Track 2 Channel Stereo System
# D M* T$ O* C- I2 uReel Capacity....Up to 10” Reel
+ r$ G* L- O* F+ ?6 h+ i8 ^, _8 qHeads....
" ]1 f' [( z1 g" ?GX head for recording x 2; ! w/ D! f" M8 ~$ H
GX head for playback x 2;
0 L7 ?; s- g$ v% b7 b D) a: xErase head x 2
Y9 t/ o9 F0 i5 d& W8 T, x) CMotors....
& c) Q& U. Z2 z" v9 UAC Servo motor for capstan drive x 1;
% Y% k8 z4 }, T4 j: f/ C' |AC Eddy current motor for reel drive x 2 5 I' ~" t) [# P4 F; |- I
Tape Speed....
9 x1 n: |- d# r) K, B19 cm/s +0.8% (7 ½ ips.);
6 B! @4 i# X; D3 A+ R; n; L9.5 cm/s +1.0% (3 ¾ ips.)
# Y. T4 u9 ^2 {Wow and Flutter....$ q. K1 z$ G" b2 L/ g
Less than 0.03% WRMS at 19 cm/s;
9 T, y) T6 G) [Less than 0.04%WRMS at 9.5 cm/s $ w$ B! u6 ` H3 a ]3 f9 W
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 0 L: C5 m6 f i8 R$ s& n" P& A
Frequency Response....
" T5 J# q% t# d25 to 33,000 Hz +3 dB at 19 cm/s;
3 \5 W. o2 {; G8 v: \: f25 to 26,000 Hz +3 dB (0 VU); " h+ f9 N, ]6 o
25 to 33,000 Hz +3 dB at 9.5 cm/s; ; ?+ n; I, a3 T' A/ t
25 to 15,000 Hz +3 dB (0 VU)
; C# X9 a* t# A2 p0 qSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) e5 j4 v! e8 W# j
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) . r" _5 l$ c- _; C$ v
Harmonic Distortion....Less than 0.4% at 19 cm/s
$ w' }: A- P; d! c/ a& ?" NInput....; }5 X0 Q3 X6 V L- e& O
MIC: 0.25 mV; Required microphone impedance: 600 ohms; 4 P4 O) G3 s" ]4 ~
Line: 70 mV
8 n; T$ Q! P9 j, N6 _: Q! YOutput....
* J* X) ^8 z& o1 y( iLine: 410 mV;
, [) z) v: Q" U9 t; }; QPhone: 1.3 mW / z+ y+ S4 N2 r2 X' J
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable . {, [7 ^% E6 x" y8 @) }
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) : h2 s/ J1 n! J
Weight....23.2 kg (51.0 lbs) |
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