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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。! s8 Q6 g- n1 C) h
各项指标如下:
8 a4 o# D! e8 M) m
, S) A" m& F3 [" CTrack System….4 Track 2 Channel Stereo System
, R0 E* Z4 U: bReel Capacity....Up to 10” Reel
( v6 ?8 o" l& U DHeads.... {7 u: Y; n: x/ S
GX head for recording x 2; 7 n$ n6 v+ [. Y# M& w* C5 c
GX head for playback x 2; + E6 q) ?, @0 j0 t
Erase head x 2
7 J1 v7 O1 g$ B _; Y. \1 N1 kMotors..../ P5 G, C/ u9 `9 v; {# g* j P
AC Servo motor for capstan drive x 1; ; ~; z& m; E+ b2 ?- I2 T, Q
AC Eddy current motor for reel drive x 2
; p9 b7 G) T4 S sTape Speed.... N ?, _$ N- v
19 cm/s +0.8% (7 ½ ips.);
4 Y3 R2 C! n1 ^7 c7 x% d9.5 cm/s +1.0% (3 ¾ ips.)
" ^7 f" a% v2 t. ?/ D: n% EWow and Flutter...., i1 ]& Q! _- l( M7 I3 z
Less than 0.03% WRMS at 19 cm/s;
& i( [$ e1 n: A. c" d5 p" { YLess than 0.04%WRMS at 9.5 cm/s
7 k, d2 |! @. MTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
- b# {5 p. B- l3 ]; EFrequency Response...., V0 ]: X! _' E
25 to 33,000 Hz +3 dB at 19 cm/s; # ]- m* L$ k7 T$ S0 Z: L
25 to 26,000 Hz +3 dB (0 VU);
0 X( o; T" \, a7 |( w" A25 to 33,000 Hz +3 dB at 9.5 cm/s;
3 p$ a8 N9 {# ]( {. b4 A25 to 15,000 Hz +3 dB (0 VU)
) u. b- I3 k) t' c3 m- j- R A: O$ WSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
9 P8 h0 E* U9 ]0 t( o3 UDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
3 d' G1 _& r4 H: P' x+ N: oHarmonic Distortion....Less than 0.4% at 19 cm/s 7 Q+ O/ h' O- Z4 `0 [1 p, x; o8 T
Input....: |) S' o/ k! V1 O; H7 V
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
, ]- A; ?" i- @+ O+ i- B- A; wLine: 70 mV
1 `; {# }4 e2 h6 F' ^, ^Output....: z8 `& l( f L" q) |4 ]. e
Line: 410 mV; 4 j0 F9 C0 r3 Q a C8 Q' C
Phone: 1.3 mW
- i. b- j5 I) ^) |Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable ' Q8 R' ^5 m' b9 L
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) ' d9 g6 ]3 g9 w- ~) l- M
Weight....23.2 kg (51.0 lbs) |
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