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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。& H# G4 k$ I J# T! G
各项指标如下:" W( [3 u. O, [" I0 Z0 [3 K
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Track System….4 Track 2 Channel Stereo System
' ?# R1 u/ g- g; \" c; M9 ]Reel Capacity....Up to 10” Reel
' X8 Z- n$ L, T1 e! p* S: I EHeads....' l# r' Y' [7 v" a6 I
GX head for recording x 2;
6 \ R. t. n. u( m5 iGX head for playback x 2;
' ^& `, f$ K" RErase head x 2
( Q2 w9 `& Z: q. {6 i8 l& |Motors...." F( H1 y1 Z3 g$ k5 Z4 d2 I
AC Servo motor for capstan drive x 1; , w2 N8 N/ w2 g
AC Eddy current motor for reel drive x 2 0 J+ q7 T; M1 D1 z7 {3 p
Tape Speed....
" ?4 [5 @; l) b* {( Z: c) L; E19 cm/s +0.8% (7 ½ ips.);
, x4 U3 G# d4 x% C/ k5 C9.5 cm/s +1.0% (3 ¾ ips.) 4 J: S H! z+ D7 T4 M
Wow and Flutter....
( a/ e8 R* U8 a2 t* }Less than 0.03% WRMS at 19 cm/s; 6 Z1 F8 N( L) O4 t2 o4 M
Less than 0.04%WRMS at 9.5 cm/s
& Q( ` ` u0 ]! RTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
; J, G3 ~/ W C4 X/ h0 C9 AFrequency Response....
. `9 W3 m9 q5 T' ?) F25 to 33,000 Hz +3 dB at 19 cm/s;
|9 z- k% y1 {25 to 26,000 Hz +3 dB (0 VU); . {# M# |3 y9 R5 \) P4 u
25 to 33,000 Hz +3 dB at 9.5 cm/s;
/ N4 l% C F2 P9 O1 ^7 P. b4 I25 to 15,000 Hz +3 dB (0 VU)
) K/ [$ S/ L1 u& O' f3 y. ?+ x% RSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) 6 t+ x$ j" y3 `
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
3 {6 i. r6 O5 ]) K2 I0 x) y, G- nHarmonic Distortion....Less than 0.4% at 19 cm/s
& M1 I x. {6 T! A* q7 x/ ZInput....
" a2 r4 p/ H. x8 H+ E* }* gMIC: 0.25 mV; Required microphone impedance: 600 ohms;
& ?% x0 I) M: N0 t! ?Line: 70 mV
: J6 h' C- V0 O/ r6 JOutput....
# d* F( o( F a0 Q; aLine: 410 mV; 9 l( H3 R5 k; z, q0 i& E; i
Phone: 1.3 mW
: N, q, y9 X% a$ y7 q! Q+ mPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
6 \- M( I" R/ d2 f3 V4 e5 cDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
, G( x4 n* {) |6 ]& U: FWeight....23.2 kg (51.0 lbs) |
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