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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。
; T) n2 v0 z+ w: c1 `5 d& A各项指标如下:
# n# P) l+ k& U& i6 l1 f- F3 P# c# L% Z1 ?3 j, x
Track System….4 Track 2 Channel Stereo System
w* H% v( t* U: g6 g7 }Reel Capacity....Up to 10” Reel ! q! V8 F3 T: @9 n' x. B8 t
Heads....6 {0 L+ @/ T& S# i1 `' s
GX head for recording x 2; ( j; Q7 \. m( o) S
GX head for playback x 2;
0 t1 s: m/ `( \+ c3 fErase head x 2
2 R3 d s: J& p8 G1 X8 ]5 A" jMotors....: K6 p3 b# |4 Z% c
AC Servo motor for capstan drive x 1; ' _/ V; X. k( F+ Y3 t S
AC Eddy current motor for reel drive x 2 / R6 ^" y, [$ @( Z3 [5 J$ [2 a* c
Tape Speed....5 a; Q% h2 e! @) R0 U1 b ]( T
19 cm/s +0.8% (7 ½ ips.); 9 j* C4 Q, f M3 e3 u
9.5 cm/s +1.0% (3 ¾ ips.)
1 n* p( s) T( _. U0 r. ZWow and Flutter....
# s4 d+ @7 [* M7 u/ [( {% J! l% HLess than 0.03% WRMS at 19 cm/s; ( _3 c' x* D5 f5 G4 ^& @' D
Less than 0.04%WRMS at 9.5 cm/s / Y5 m! I( J, y2 J7 G1 s
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 5 j5 _+ ? Y4 G- K1 H* H2 l6 k- E% ?
Frequency Response....
3 p+ }& s+ Z7 K. k$ z25 to 33,000 Hz +3 dB at 19 cm/s;
$ Q$ G3 d8 O, Z3 w! r25 to 26,000 Hz +3 dB (0 VU); 9 d H5 `% W6 O& I6 T; h' J0 X
25 to 33,000 Hz +3 dB at 9.5 cm/s;
& O$ q+ I1 s( l25 to 15,000 Hz +3 dB (0 VU)
$ t: A! G+ j, i0 v3 c/ DSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) + U# y4 G- N; d2 q4 A ]( H
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) : q0 Z& e9 m4 e! f& m; F( K
Harmonic Distortion....Less than 0.4% at 19 cm/s
4 ?! p$ w4 d0 L; V/ AInput....
+ [. A6 V6 R6 f6 m, _MIC: 0.25 mV; Required microphone impedance: 600 ohms;
' o& a# O; a& Z4 V6 x5 GLine: 70 mV . M; |& t; j {% P0 N0 F
Output....
; Q( r3 \1 m1 `' j. HLine: 410 mV; 6 \) } X$ ~+ E8 Q9 P! M7 k. L
Phone: 1.3 mW
' ]4 R: U; d2 ^& q0 @8 f) U M9 C FPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
: F8 Z" o/ ]) BDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 8 F, U) @% A. V' s+ d
Weight....23.2 kg (51.0 lbs) |
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