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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。7 A$ W, c; R, d% w: _) p0 I
各项指标如下:
" M3 E/ f4 \# Q; T" P9 @+ u" M/ J7 B
Track System….4 Track 2 Channel Stereo System 0 E! v# H3 N! K l8 A3 B0 B
Reel Capacity....Up to 10” Reel $ L. Y4 m6 D2 b1 s) x0 z$ Y
Heads....! i) a' b8 `3 f# F% V
GX head for recording x 2; : z% s- {+ j1 P. j9 U& t/ D
GX head for playback x 2;
% E) _2 {4 `6 K1 OErase head x 2
" x% N0 @/ o* ?, z+ B/ u% kMotors....) l6 l0 X/ [' d. v1 J9 E) D
AC Servo motor for capstan drive x 1; " v8 ?: J+ v& C8 `0 ]
AC Eddy current motor for reel drive x 2 ( Z+ K) O. K! N8 o* {
Tape Speed....
9 k! j" o2 w+ r/ R5 F# D" l1 b19 cm/s +0.8% (7 ½ ips.);
6 n+ R% L0 i1 J; z2 D3 a- m2 \9.5 cm/s +1.0% (3 ¾ ips.) 0 Z5 Z9 L+ I) _
Wow and Flutter....: v7 d# q* y; @$ d/ Z) O: {( ?
Less than 0.03% WRMS at 19 cm/s;
: k$ ~: f8 g1 _4 bLess than 0.04%WRMS at 9.5 cm/s
# y4 V- q, k6 i3 {; \5 i# X1 QTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
* x5 V* z$ ^, P( B, |5 h2 z" A: ]1 \( BFrequency Response...., L* Z* u9 ~8 P2 |$ B
25 to 33,000 Hz +3 dB at 19 cm/s; 0 H& B9 Y% _, {, @% E' t
25 to 26,000 Hz +3 dB (0 VU);
' @% S; q. P; M: c. o25 to 33,000 Hz +3 dB at 9.5 cm/s;
) j, o$ U' s; ]! L0 F8 j7 v25 to 15,000 Hz +3 dB (0 VU) / P3 N e0 w' {
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) . I) }6 ^* y# d. Y
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 2 y' S' X3 n7 m6 J
Harmonic Distortion....Less than 0.4% at 19 cm/s
5 Y" X; G& C$ pInput....( ^+ X0 U9 g. V* e
MIC: 0.25 mV; Required microphone impedance: 600 ohms; " n, {2 G2 S) }
Line: 70 mV ) z& W0 R1 k7 Y
Output....# h) a2 p% L( [: p1 F- n$ G1 I
Line: 410 mV; 4 L' R, }) E# H& I% ~
Phone: 1.3 mW
$ U8 u/ z3 W* m3 Q( sPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
% ]2 D1 F+ a5 Z8 J9 ~) jDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 4 y0 J8 M% e1 { d
Weight....23.2 kg (51.0 lbs) |
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