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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。5 |: f8 G6 p0 J
各项指标如下:1 j9 q* g( ?3 [$ |" ?- c8 A
. ]; @! |# a% D3 x7 y( B- M
Track System….4 Track 2 Channel Stereo System 9 q4 D- P [9 j: d% j
Reel Capacity....Up to 10” Reel
- G* O7 e+ |' t) q! VHeads....
. r. ]3 e4 f5 _4 ?5 {; FGX head for recording x 2; 3 t6 I2 G& Q) M& y# n; |1 N
GX head for playback x 2; 1 k% E; i+ X. S$ P8 I( r& Z
Erase head x 2
" F4 x8 |$ g4 F* YMotors....
: j7 w1 B. \+ D% L. hAC Servo motor for capstan drive x 1;
) R! M3 r s& vAC Eddy current motor for reel drive x 2
9 R1 @! H+ J& g# M1 tTape Speed....
- d, T/ G( i6 K* L3 i% p19 cm/s +0.8% (7 ½ ips.);
, m$ h. s9 {9 N. c% n* Q! _# u9.5 cm/s +1.0% (3 ¾ ips.) 7 N' [ J! _1 q0 S- g( O
Wow and Flutter....
8 o0 A& j7 s% V. B9 aLess than 0.03% WRMS at 19 cm/s;
8 P* ^. J: b5 D! o# FLess than 0.04%WRMS at 9.5 cm/s
* K, s) g% n& D& `0 b HTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
" x- N1 w6 M! FFrequency Response....
+ m. \3 K8 z! p9 W0 I& M25 to 33,000 Hz +3 dB at 19 cm/s; 0 M5 V+ E, b1 g; Z; W! S- _
25 to 26,000 Hz +3 dB (0 VU); L n7 [1 [! D& ^+ H: o
25 to 33,000 Hz +3 dB at 9.5 cm/s; 2 Q+ Y1 B" A+ |( p( T
25 to 15,000 Hz +3 dB (0 VU)
0 l) A0 A. f4 J% ?! l' wSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) / {, P8 I5 {) U
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) . x1 ]" w# t7 p8 k
Harmonic Distortion....Less than 0.4% at 19 cm/s
1 H# T& X1 a+ o: g& k, CInput....0 r- T5 f" c) o6 |9 N
MIC: 0.25 mV; Required microphone impedance: 600 ohms; 1 u5 x; C3 z8 ?& n
Line: 70 mV ) S/ o) |" X( ^, \- T. g& ?5 S' Y
Output....# N# R; s" i7 r3 K/ Z. B
Line: 410 mV; 5 }7 X" U, c, j6 m5 ]
Phone: 1.3 mW
( @. W0 n& y. ?$ }Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
# [# @3 G. p. F( H5 O3 ]8 i$ kDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) U5 j# X2 E0 e. x: q# a% V
Weight....23.2 kg (51.0 lbs) |
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