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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 t. N4 _# P: Z* [" d2 c" B各项指标如下:
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: Z9 j. f! |0 p/ I2 w E' R. |Track System….4 Track 2 Channel Stereo System : C: m0 L% X" a; x0 p
Reel Capacity....Up to 10” Reel 3 s9 ?1 ?, n' V
Heads....
! G1 D1 M u9 LGX head for recording x 2; 9 b/ L0 x# r, V" r; M. w
GX head for playback x 2; ' R1 [ n5 h0 k0 }* ~2 t+ ^& ?
Erase head x 2
5 u$ H' s# _ F dMotors....* m; r; G& P" J- A$ v
AC Servo motor for capstan drive x 1;
9 x& W! g; F& A _AC Eddy current motor for reel drive x 2 # @2 K* b* T& K7 a; X' F/ b
Tape Speed....
8 K8 \/ Q' P+ B& L19 cm/s +0.8% (7 ½ ips.); 5 {/ `( G) N0 ]& V1 O
9.5 cm/s +1.0% (3 ¾ ips.) ) W5 N- D% I) {2 N9 J3 C0 }+ D% ~
Wow and Flutter....% G( L+ j0 K. I6 h, C6 ]
Less than 0.03% WRMS at 19 cm/s; ) @; j9 ~/ x- i' \
Less than 0.04%WRMS at 9.5 cm/s 8 M0 I/ Y' ~9 m
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
4 p. O( c- @1 K, j$ T3 B7 WFrequency Response....
. [# c9 x0 ~. m Y7 n25 to 33,000 Hz +3 dB at 19 cm/s; ! W6 T Q9 C% {3 D2 q4 Y# L/ Q- d
25 to 26,000 Hz +3 dB (0 VU);
/ @& ^) r ?& n4 ~+ a+ e+ E25 to 33,000 Hz +3 dB at 9.5 cm/s;
/ b2 g, Q, e1 j+ | z25 to 15,000 Hz +3 dB (0 VU) 5 l/ q$ g. P3 U) S3 N
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) 8 ]9 H O' U( v
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
& G0 N0 w/ _' j1 D1 g6 p7 p4 lHarmonic Distortion....Less than 0.4% at 19 cm/s
4 Q: z/ b3 @6 NInput....( o( h9 C- I' q; @8 F+ [, U; H( h
MIC: 0.25 mV; Required microphone impedance: 600 ohms; : d( u8 x/ T' v
Line: 70 mV ; @& ~( T% w* D5 W, l
Output....
0 x: M" }4 E3 G. ` W: w; pLine: 410 mV;
" v e# V }3 F2 wPhone: 1.3 mW
# y! D3 f3 i3 |, W: _, M jPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable 0 |" H3 N* y0 w" q' I( |6 J
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 3 _' ^- k- Y, c1 }: P
Weight....23.2 kg (51.0 lbs) |
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