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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。/ M3 c, `% @! [6 O$ W
各项指标如下:8 V b0 y& K+ I$ t
* S3 S! E x3 H7 kTrack System….4 Track 2 Channel Stereo System 2 s. u% q* n# r% H, Z) g
Reel Capacity....Up to 10” Reel
; ^2 }. a `4 d7 m4 V5 e, EHeads....
. z, \1 u* B' y5 l" lGX head for recording x 2; 3 l# {. F. u7 W7 j' y9 b% ^
GX head for playback x 2;
' _) s$ X V, f" @& G* OErase head x 2 . S8 k4 g( n0 j! j. b7 h5 c1 A
Motors....
0 v! z3 h0 v( ^3 UAC Servo motor for capstan drive x 1; 5 ?* @2 Y; t) O% o
AC Eddy current motor for reel drive x 2
4 z, z7 I, \, L: K& LTape Speed....
8 X2 t7 R5 M! C' t w& ^/ |19 cm/s +0.8% (7 ½ ips.);
# e3 P; B. o8 V* l1 x+ i# }; O& g9.5 cm/s +1.0% (3 ¾ ips.)
& I0 B+ q) O, [ o7 L! K. WWow and Flutter....
1 v5 h/ r* l6 L7 v( A/ y7 G0 r& FLess than 0.03% WRMS at 19 cm/s;
P% u- m$ W4 v2 VLess than 0.04%WRMS at 9.5 cm/s 5 W5 [0 I% q, q0 J% {
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
& K7 c( ^& J1 g, f/ k9 O2 {Frequency Response....: {, }" V6 f5 P+ i9 w( I
25 to 33,000 Hz +3 dB at 19 cm/s;
/ J# ~! h/ K6 S3 J4 G$ h- X25 to 26,000 Hz +3 dB (0 VU);
' C `) H7 u6 |5 H- p0 h25 to 33,000 Hz +3 dB at 9.5 cm/s; + v; A% U: c3 e5 r. d n7 I
25 to 15,000 Hz +3 dB (0 VU)
' M* m8 ], @5 N; V' DSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) $ L5 w; B4 t: R, M, ?7 a8 Z! W
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 5 h8 Q$ F" V( O- {5 s
Harmonic Distortion....Less than 0.4% at 19 cm/s . r) D9 Q+ l5 | P8 d+ X2 P. p- v7 `
Input....# |+ s1 ?# V+ N1 q+ H
MIC: 0.25 mV; Required microphone impedance: 600 ohms; 6 ?% p9 j3 M4 O3 m2 L
Line: 70 mV
3 x& J' i! ^! O. yOutput....
0 R1 ], I l* s% ^8 kLine: 410 mV;
! P* g( ?, v) yPhone: 1.3 mW
9 k. w5 O" P7 t U _6 D APower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable 5 ? e9 U% ]3 ?
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) & t5 Z6 e& W2 Y! s6 X0 L
Weight....23.2 kg (51.0 lbs) |
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