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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。
1 C$ P! Y/ j" e# x4 P各项指标如下:5 {2 y( }0 _( E6 J: h$ m$ x& E4 e
6 o6 ?2 C3 z. N8 C# DTrack System….4 Track 2 Channel Stereo System 8 O3 _! w3 V5 y+ I; u4 z
Reel Capacity....Up to 10” Reel
/ D8 M" k+ p; f9 _3 Q( H" c& ~Heads....
0 r$ C6 t: O& I$ a3 v, Z& dGX head for recording x 2; + L* \1 M& Y8 V3 ^5 J" d
GX head for playback x 2; ; g) z# b) x4 a
Erase head x 2 + J5 a3 {) A- o9 A% @' d- k( y: I
Motors....
. s. ?3 A0 m5 `( rAC Servo motor for capstan drive x 1; * C- c9 r# D& T; Y$ V- A
AC Eddy current motor for reel drive x 2
* o% @. r7 Z2 }Tape Speed...., W4 a& n9 }) ~0 u5 r
19 cm/s +0.8% (7 ½ ips.); 1 X* P" U$ e, O, L' G
9.5 cm/s +1.0% (3 ¾ ips.)
$ F) y1 o$ l% {, m; q2 y! l7 t) Q dWow and Flutter....
; E' G5 ~" [5 Y5 @# z" OLess than 0.03% WRMS at 19 cm/s;
4 ]* `2 y) r4 v: xLess than 0.04%WRMS at 9.5 cm/s
9 b0 B L6 P- X: k" yTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape " S3 a: \9 o& c" e5 X. h9 L
Frequency Response....4 N0 P$ c/ e! E
25 to 33,000 Hz +3 dB at 19 cm/s; 8 h7 ~& r' t" a6 _
25 to 26,000 Hz +3 dB (0 VU);
' K( V: o2 G v9 O2 F25 to 33,000 Hz +3 dB at 9.5 cm/s; 7 B9 d' k( c+ C5 g* J8 ^8 c
25 to 15,000 Hz +3 dB (0 VU) 5 d [9 |7 y4 h- X
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
) T" ~, J7 X5 T) K9 N$ {4 QDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 9 f+ b# Z9 z! C* P6 @4 n% J! R
Harmonic Distortion....Less than 0.4% at 19 cm/s $ g- W* H, V3 M& e; }
Input....
1 D& S- e. k- _7 G! s/ QMIC: 0.25 mV; Required microphone impedance: 600 ohms;
' F# }* B7 \. R: D2 iLine: 70 mV , H# H8 f" h6 y7 h, f0 e; q
Output....
! Z* G) h d7 F" w, T# V1 ZLine: 410 mV;
6 S- \" ?, q; C+ B0 `Phone: 1.3 mW # v: F% n G9 i5 s
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable ; _: u0 H9 K8 h! d9 z7 _2 v2 ^- V
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
0 z7 s2 e$ R7 F! S2 H7 J1 }2 hWeight....23.2 kg (51.0 lbs) |
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