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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。/ K8 C7 c! b2 T: T- l4 l
各项指标如下:( N6 |: u1 w" l. [
5 T" \. K) V# @2 i2 K ZTrack System….4 Track 2 Channel Stereo System
9 d' Q9 Z: r& O. cReel Capacity....Up to 10” Reel
% f1 _% T7 O( b% k2 wHeads....) l% m# \- H% J
GX head for recording x 2; ) _: ], i& Y, _) a: q4 D* W3 q
GX head for playback x 2; 7 V3 m4 e" d0 {! f0 W* |& L8 Y
Erase head x 2 5 T' A9 S9 Q$ J- x% i" c* `
Motors....$ P' J" n0 S E
AC Servo motor for capstan drive x 1; # u4 P& O( L5 I$ A+ G( e
AC Eddy current motor for reel drive x 2 . O" K6 C1 O4 T3 H; a* }
Tape Speed...., `# O/ n6 \' X! Y4 v4 w( C
19 cm/s +0.8% (7 ½ ips.);
! G1 O3 H1 e# a2 G" W9.5 cm/s +1.0% (3 ¾ ips.)
$ L8 [5 p1 f1 q& _0 [Wow and Flutter....2 P( C+ D. {# j m3 R* ~
Less than 0.03% WRMS at 19 cm/s; " H8 J- P: u" ^5 J7 Y/ e
Less than 0.04%WRMS at 9.5 cm/s
0 w2 [( r; x; nTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 1 i6 w$ w- n% I R. ^3 X6 J4 e
Frequency Response....
! s' N6 S% W1 k; V: ]25 to 33,000 Hz +3 dB at 19 cm/s;
$ G# W, b) l) R$ a) f0 o9 w0 N25 to 26,000 Hz +3 dB (0 VU); . N( S" h6 j# _ i! H: w, t
25 to 33,000 Hz +3 dB at 9.5 cm/s;
; T% C k) V* m( n5 n25 to 15,000 Hz +3 dB (0 VU) - j" F7 r; `! E' @4 v
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) ( Z, B; ^! u; ?$ F* g% J5 X u
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
* D6 y4 a; g1 f0 L2 M) c$ j; e; rHarmonic Distortion....Less than 0.4% at 19 cm/s
% X+ ^# j. {; n( z5 n- M# W; f" eInput....
: [* d8 S# o+ U4 H, OMIC: 0.25 mV; Required microphone impedance: 600 ohms; / ?; g9 z4 N! S) C5 q1 [# F: F
Line: 70 mV
J$ Y6 P/ J1 V+ @& m cOutput....! b: ?7 }) r0 |* \
Line: 410 mV; 3 j: Y& l% n" u# u H6 R
Phone: 1.3 mW 5 q& x$ F, z, L4 p
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
4 f* Q' |" y, b1 f# @Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 6 f# r; W. j2 P. w" ^5 U
Weight....23.2 kg (51.0 lbs) |
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