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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。
3 i4 L Y$ g4 F/ C, I4 }+ G4 e各项指标如下:
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3 w" D: S$ V, s6 _" |: L; KTrack System….4 Track 2 Channel Stereo System
1 l- H- t; T- Z' w+ g! K& SReel Capacity....Up to 10” Reel ; h8 O5 k- _7 V5 X# K& v; M5 z* o
Heads....& y$ z& Q+ Q+ R' {/ e! X8 I
GX head for recording x 2; ' h; _% |- R. H& A
GX head for playback x 2; - z1 M8 J* @2 b" A8 ?% p
Erase head x 2 8 \! u( B% O7 K: s$ h" F* p" f
Motors....8 }' Q, U3 z6 b3 S1 T9 ?: {
AC Servo motor for capstan drive x 1;
" o6 O, u6 s. w7 h- H3 [AC Eddy current motor for reel drive x 2 # i: m4 x# W1 Q9 ^
Tape Speed....
8 e" Z7 ?* \8 J19 cm/s +0.8% (7 ½ ips.); & ^; c; D2 |( a x6 H b
9.5 cm/s +1.0% (3 ¾ ips.)
6 Y0 \: L6 \! m) nWow and Flutter....( z- }* @$ F( K/ g7 t6 G* m0 p
Less than 0.03% WRMS at 19 cm/s; ; z$ H, j2 q& z8 Z0 p( U- T
Less than 0.04%WRMS at 9.5 cm/s . y, D% c* R# P8 e. b4 a# }
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 7 Q" n! x! p( J- n+ p
Frequency Response....* b1 o& C4 u Q: A; G* U `3 v
25 to 33,000 Hz +3 dB at 19 cm/s;
8 K5 t7 f: l& s# L' J0 u25 to 26,000 Hz +3 dB (0 VU);
. z. G3 R1 U: E25 to 33,000 Hz +3 dB at 9.5 cm/s; # L3 T# ]" Z/ X: _/ m0 }6 Z
25 to 15,000 Hz +3 dB (0 VU)
' i6 y) L% q' w+ R' |4 kSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) * P* D9 s& M/ r1 ]3 d
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
2 A( ]% ^5 B% c# S/ {& Z- i' FHarmonic Distortion....Less than 0.4% at 19 cm/s 9 x% E% ]+ d }7 a: d. Z+ T
Input....6 N4 g; X# [1 `$ p `: ? S5 b
MIC: 0.25 mV; Required microphone impedance: 600 ohms; - Z5 C5 C4 a) M$ ~0 \
Line: 70 mV
5 s, t' s: W1 b6 C- fOutput....7 K. ]( t+ c+ u
Line: 410 mV; 2 t, V/ x N. v: W% ?
Phone: 1.3 mW
- G) [3 p; P/ n, K. uPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
7 U5 R8 q+ Q$ s! b9 i; c5 gDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
4 E- }( A* E+ x$ U" oWeight....23.2 kg (51.0 lbs) |
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