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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。
$ S: d: ^4 A4 i- l各项指标如下: J% @5 P* z( T
& V$ y4 ]) S" t+ U, sTrack System….4 Track 2 Channel Stereo System . U ]. P- Y. ]/ P* q0 F
Reel Capacity....Up to 10” Reel , J( H3 s; P6 J% t w
Heads..... M+ c* I+ a; o$ d6 i9 Z
GX head for recording x 2;
+ O/ `" `! \/ b3 m Q+ L8 SGX head for playback x 2;
3 y v. p: u, {# C' vErase head x 2 9 u0 W; t4 G! A! o# N
Motors....: J4 k3 r" [% _" O
AC Servo motor for capstan drive x 1;
# L* y% l$ J5 G- B$ I$ m5 uAC Eddy current motor for reel drive x 2
; g" U9 x b) e, zTape Speed....0 g5 ~# I. B" `1 D
19 cm/s +0.8% (7 ½ ips.);
6 x8 B. C5 o5 A' E3 H0 Y" a+ h9.5 cm/s +1.0% (3 ¾ ips.)
' I9 u* u6 K0 d5 MWow and Flutter....- ?/ g2 x7 l' R B7 Q
Less than 0.03% WRMS at 19 cm/s;
% F3 C, Y2 k {: B% X- iLess than 0.04%WRMS at 9.5 cm/s
2 n% b+ Z. G, n/ b" gTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 0 ^ x) P) A! k9 H' w
Frequency Response....7 g( W' }+ x$ p, x
25 to 33,000 Hz +3 dB at 19 cm/s;
4 w/ ~* r0 c- h5 Z25 to 26,000 Hz +3 dB (0 VU); * u/ Y' v1 T- \; }
25 to 33,000 Hz +3 dB at 9.5 cm/s;
* n9 v1 ]& V! K25 to 15,000 Hz +3 dB (0 VU)
* z5 A" E; x: PSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) - `2 J! y) L/ l- W c
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 4 G7 {- [ G# q* T$ } w
Harmonic Distortion....Less than 0.4% at 19 cm/s ) P; T1 o" ~: O
Input....1 z1 n6 D* y1 [. b u' j- e% ?+ i" @
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
+ u- {9 _& e8 XLine: 70 mV 6 @4 T" ]" }$ m, L/ W
Output....
4 M2 ? z+ @# Q: wLine: 410 mV; 6 Z$ W. n1 d# V4 M# q7 G. P: t9 K
Phone: 1.3 mW
3 @6 O# A2 W+ c0 vPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
( g& ]1 w+ T! ?) _Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
5 u( N6 m# _6 ?Weight....23.2 kg (51.0 lbs) |
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