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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。 T8 z5 p+ W& I+ m Z* k5 ]4 A* }9 }
各项指标如下:# ~& G1 [/ n7 O- Y/ G
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Track System….4 Track 2 Channel Stereo System $ X! r. ^! p8 A6 j! Q l
Reel Capacity....Up to 10” Reel
( V1 A) ?6 F8 p# B# [Heads....
! b1 ~2 f7 `0 W: H$ A3 @GX head for recording x 2; - y$ p( g# c& m
GX head for playback x 2; ! k% m0 j1 J+ b# M
Erase head x 2
; h: ^5 o6 k7 x& o6 R9 g; u8 L& iMotors....! D9 d9 v: _& b4 q; y
AC Servo motor for capstan drive x 1; 1 j7 q' m0 W$ N: l- `
AC Eddy current motor for reel drive x 2 0 P6 H% }% d. I: T
Tape Speed....9 {0 R9 v1 s1 s+ P3 k
19 cm/s +0.8% (7 ½ ips.);
% ~* z" u3 L2 H' T2 h) |- v9.5 cm/s +1.0% (3 ¾ ips.) ! G- x" z7 z9 `' S/ W
Wow and Flutter....
9 d/ F; {% X$ a* N( H) `7 b2 KLess than 0.03% WRMS at 19 cm/s; 4 Z1 ?& O p: n' O0 S( l
Less than 0.04%WRMS at 9.5 cm/s * X2 @: V' W9 k7 j2 J3 k4 K
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape / m' u; c% u$ N' D; F7 {
Frequency Response....* t6 R" ?4 u) W; c- o
25 to 33,000 Hz +3 dB at 19 cm/s;
5 r3 w C) P. S; S w25 to 26,000 Hz +3 dB (0 VU); 2 ^5 A! y6 B9 R
25 to 33,000 Hz +3 dB at 9.5 cm/s;
& J7 Q% o8 H; Y- ]. n) E25 to 15,000 Hz +3 dB (0 VU) # p) D. D8 z/ `- n
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
7 u% v7 u0 w9 QDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) , U& F- i, d5 n5 l" @, P0 u3 i: q
Harmonic Distortion....Less than 0.4% at 19 cm/s
' a- W- i+ q8 `/ G6 UInput..... V0 y2 y' g6 [' U% Y* ~
MIC: 0.25 mV; Required microphone impedance: 600 ohms; ! t; X) H4 o. j
Line: 70 mV
5 K- N/ c; a. w0 VOutput.... |" j8 a# Y, ?$ R
Line: 410 mV;
& s' P$ l" D" f3 ?& Z! F$ ~Phone: 1.3 mW
& z! L& a3 u& ]Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable - A* m+ y, J3 ^6 K7 N
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 2 v$ \. l' @! E- _3 F
Weight....23.2 kg (51.0 lbs) |
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