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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 y" J0 V# t3 t% ~1 f3 h3 L8 G各项指标如下:3 N H5 X. _9 f1 [" L% a) i
; x; y, t8 J6 b. |- iTrack System….4 Track 2 Channel Stereo System
' h# C' s2 Q. s1 gReel Capacity....Up to 10” Reel ! Q P* z; ?: Z8 E9 e
Heads....
, V% P3 q; ?5 M8 ]6 ?. o4 ?GX head for recording x 2; 3 r9 O; M. H5 v2 z8 X- B
GX head for playback x 2; 5 [& ~# v6 ~* T! \: Z! P
Erase head x 2 4 A5 l5 g) H2 V) U" N8 }0 P4 r
Motors....
) b" c8 c% o3 T. @) {* Y: A) G7 MAC Servo motor for capstan drive x 1; - l! E- U% m- m# H* l1 Y
AC Eddy current motor for reel drive x 2 7 K2 q" m% G |' d0 m
Tape Speed...." ~( @1 j; H' c2 @6 H) l" F
19 cm/s +0.8% (7 ½ ips.);
\) A8 k# J) P0 [& \2 _: R9.5 cm/s +1.0% (3 ¾ ips.) 5 F- A4 e# ~1 g. {# N, I4 G$ s+ X
Wow and Flutter....
4 X8 x/ C) D, S4 A5 QLess than 0.03% WRMS at 19 cm/s;
! \) l @& k& R0 M& {2 I: ALess than 0.04%WRMS at 9.5 cm/s
8 v7 w+ G B |) Y4 t: CTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
( K& X) }9 _4 JFrequency Response....
" w- A& k, s+ S4 C5 @25 to 33,000 Hz +3 dB at 19 cm/s; ) q! n' s3 {7 ^0 o1 Z* f8 O7 J
25 to 26,000 Hz +3 dB (0 VU); ! o2 k! i. K$ C
25 to 33,000 Hz +3 dB at 9.5 cm/s;
- u% ]8 a- W# Q+ q' v/ p6 i/ e25 to 15,000 Hz +3 dB (0 VU) ) }! i) j0 v* p
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) 1 g5 u& F1 y1 x+ \, q1 s# w
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
, J) {& x0 ~( N) |+ o3 `. m1 mHarmonic Distortion....Less than 0.4% at 19 cm/s ) m" @* {6 H. `( v1 P/ K" `
Input....
' X @7 w! H2 l ^5 `MIC: 0.25 mV; Required microphone impedance: 600 ohms; * y7 V' @. M" c) n
Line: 70 mV
) F8 n0 L5 m" }+ H. o: vOutput....1 i) s/ b0 ]& N; X# m1 Y1 h+ Y
Line: 410 mV;
/ [, Q5 {$ t% u9 W6 i; Z' NPhone: 1.3 mW
0 d" L8 ^. M* `& x6 S7 L$ C( z; I5 D$ sPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
1 `6 o) k7 E* w2 E9 R: d% h4 _" `Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) * d; ^ d# Q7 c7 W; K: K, j* I& S
Weight....23.2 kg (51.0 lbs) |
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