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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。; P! C. p8 `# {: [3 l! t* D7 ]- `* f
各项指标如下:
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Track System….4 Track 2 Channel Stereo System
7 g3 |6 M# ?9 h" E8 \* f$ ]3 OReel Capacity....Up to 10” Reel
& c. M! I* }5 M) o6 k; KHeads....
9 x8 E& \/ V# P2 |5 v: ] dGX head for recording x 2;
- j0 S, Z% ]1 z% uGX head for playback x 2; - N* J5 @2 f: m) I/ B
Erase head x 2 ' m* o. N8 i1 d4 Z" C7 g1 ?
Motors.... \ h; [0 P1 f0 ]9 `
AC Servo motor for capstan drive x 1;
$ R+ x* V0 S9 y4 G; ~. w1 ^7 {AC Eddy current motor for reel drive x 2
: \6 {1 B; E: Z" y+ FTape Speed....5 g8 J6 s% `; n
19 cm/s +0.8% (7 ½ ips.); o4 ] ^" W# ]" ^2 b# h) Q
9.5 cm/s +1.0% (3 ¾ ips.)
S& `, ~' X* H4 X; M5 xWow and Flutter....
+ A5 a% _6 N- K7 l7 a* j. ?0 XLess than 0.03% WRMS at 19 cm/s; " j% E- W# ?. w6 w$ T
Less than 0.04%WRMS at 9.5 cm/s 6 b& P ?7 u0 v! `4 n- u3 G
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
, M( O4 D* p" J3 EFrequency Response..../ ]0 U3 b2 o$ c3 G/ [+ K
25 to 33,000 Hz +3 dB at 19 cm/s;
1 j6 C- `7 r+ |1 N25 to 26,000 Hz +3 dB (0 VU); ( {; ?3 K0 M; J9 L+ ~2 ]3 i' }
25 to 33,000 Hz +3 dB at 9.5 cm/s; : ?3 z% ]5 c6 ~3 e
25 to 15,000 Hz +3 dB (0 VU)
0 ?+ u" b$ Z8 L% vSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) & R# m) z! O3 S9 {
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
/ q8 I3 V A9 o7 k [& dHarmonic Distortion....Less than 0.4% at 19 cm/s " u3 X) B: E. K0 E; s" S% s; o
Input....# N9 s( h/ Q: K' t {
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
- y7 j6 Z- G# t" s* q/ c$ FLine: 70 mV
4 N2 K; c7 j4 N9 R- q: j9 eOutput....
3 P. x% z, r9 B. R9 aLine: 410 mV;
0 |/ l: R O6 |- ?; L7 F, k) m7 m& z# kPhone: 1.3 mW
; p9 Q+ `3 {: O3 c* x3 aPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable ; k1 B* d' x" e; }" t4 G
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
: J5 G3 Q! C7 ?7 g! l$ [( |3 YWeight....23.2 kg (51.0 lbs) |
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