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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. _% O- k. Z5 J( \ C各项指标如下:
; O. Z5 `1 S( B$ |5 g) r" C; ]/ e, R( Q @2 z' }! l4 l
Track System….4 Track 2 Channel Stereo System
6 {. y H* L6 H5 Z5 G( k3 h' nReel Capacity....Up to 10” Reel
8 c4 v, c1 L6 G% FHeads.... `! r6 U+ F# n- _
GX head for recording x 2;
6 W" c1 h% P8 O }8 q' W( [8 N% AGX head for playback x 2;
/ q( E* I. b1 h% EErase head x 2
' v1 P& e) @/ UMotors....
) R0 B& U: L8 S5 LAC Servo motor for capstan drive x 1;
8 |, M3 m5 }4 X( [. {( s' rAC Eddy current motor for reel drive x 2 , K3 p+ \9 C. z3 k q8 a
Tape Speed....
: G! Q' }( k7 H& Q19 cm/s +0.8% (7 ½ ips.);
! V1 o0 H7 X2 m9.5 cm/s +1.0% (3 ¾ ips.)
8 }3 Y: j, N: g6 QWow and Flutter....
+ e5 u) B+ w& Z3 _8 o4 bLess than 0.03% WRMS at 19 cm/s;
; E! l" O6 x. Q x2 eLess than 0.04%WRMS at 9.5 cm/s . D N( W3 a# \7 j$ Q
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape - ?0 g" G) _/ g' m* D* H
Frequency Response....
# Q0 K; K6 l" H# v8 P25 to 33,000 Hz +3 dB at 19 cm/s;
9 R. }; a# @* p3 c z/ V4 L25 to 26,000 Hz +3 dB (0 VU);
% J8 Y7 f. c7 ~+ M0 _25 to 33,000 Hz +3 dB at 9.5 cm/s;
; n, D K. r; a$ k* x# @8 S25 to 15,000 Hz +3 dB (0 VU)
# d! s9 W f4 d3 v: ESignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
7 T" K" A" y- _, \: g7 iDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
9 h2 l% M- h/ w y: A, VHarmonic Distortion....Less than 0.4% at 19 cm/s
/ n( g& T, K$ M6 L8 Z& O( lInput....
n8 z+ J5 V8 W4 N3 N+ G. OMIC: 0.25 mV; Required microphone impedance: 600 ohms; 9 l$ S* ]& |* _$ o
Line: 70 mV
/ J" n2 J# h4 M" n1 X1 F' T/ I0 nOutput....
6 t7 L* v) s6 M. N# DLine: 410 mV;
. d, E+ T$ {+ t9 X, a Z+ {Phone: 1.3 mW 1 o, c" H: i2 ^( m$ J
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable 8 I M5 K5 V( {1 l( Q
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
2 X7 @2 L) L9 `+ c, ~) B2 I$ b5 |: _3 SWeight....23.2 kg (51.0 lbs) |
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