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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。
$ Y2 h: z) c' {" c8 \各项指标如下:- x [1 ^ H$ W( m4 K
0 R" Z0 r/ P4 X( G0 q# F
Track System….4 Track 2 Channel Stereo System
* ^ Q" Z2 Z7 c* nReel Capacity....Up to 10” Reel 5 Z3 @' k$ u- K5 V/ h$ I
Heads....7 [, y! C7 c, Z. s- p
GX head for recording x 2;
" e" A% g0 n/ q& ]' w' nGX head for playback x 2;
# e6 I0 B" M3 ~5 ]* \Erase head x 2 " L- a9 T2 n% E
Motors....$ K6 g6 z/ R- k3 _8 k% j6 ] h
AC Servo motor for capstan drive x 1; # b( L* l. F8 `( b" Y0 A; ^
AC Eddy current motor for reel drive x 2 & ^: P: F2 o4 P6 b$ p$ k
Tape Speed....
, P8 Z. r( o. L( `$ w19 cm/s +0.8% (7 ½ ips.);
; N8 S* n9 S# P: p" w, E9.5 cm/s +1.0% (3 ¾ ips.) ( Q) u0 @1 D+ ?( j5 W0 I' k
Wow and Flutter....! i: M" K6 R2 ^. M- k6 _
Less than 0.03% WRMS at 19 cm/s; # X5 T5 b7 V& t4 A% a# k3 B
Less than 0.04%WRMS at 9.5 cm/s
; i. i3 P9 p! l: p d* N* o4 uTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape # ]( Q) Z. E, k5 h6 B3 |; d
Frequency Response....& W5 n1 j. R, j- e0 o
25 to 33,000 Hz +3 dB at 19 cm/s;
/ l! F4 v/ v0 @25 to 26,000 Hz +3 dB (0 VU); j8 \7 ~" U" Z) j: ?
25 to 33,000 Hz +3 dB at 9.5 cm/s; ; O, ^2 E% D' ]/ e
25 to 15,000 Hz +3 dB (0 VU)
/ L5 Y' @2 w8 s6 }3 H1 u, ~Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) 7 t9 v1 |0 [* C7 V; a4 c1 X
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
+ E, t& y) E4 {0 [6 b& ?Harmonic Distortion....Less than 0.4% at 19 cm/s
+ L. z0 P7 [! p. I; AInput....
! ]: F4 t+ ?% @& \MIC: 0.25 mV; Required microphone impedance: 600 ohms;
, `4 r) s5 J$ P) q1 \Line: 70 mV
( L& r& D! |4 x2 X, C* @Output....
, F- ~; V3 y* R6 pLine: 410 mV; 0 N, P) Z$ H! t2 M; I
Phone: 1.3 mW 1 A! s$ |, ~& H( W; l. |
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
0 ]) V) F( ^, b9 _( S. C& A; GDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) & l+ y" c4 b5 s$ Y3 h
Weight....23.2 kg (51.0 lbs) |
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