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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。/ P9 u3 l1 l, P/ k5 ^& u
各项指标如下:
3 x1 k, `$ M1 f: d0 ~: Y' |1 E& B9 ?
Track System….4 Track 2 Channel Stereo System
6 U+ b& @+ p9 R" \Reel Capacity....Up to 10” Reel 8 F% ^/ E; G- t- ~8 C9 q
Heads....9 j( Y) Y* ]6 K$ a D* Z7 ~' Y
GX head for recording x 2; _! c9 }: @+ S* A6 Q1 i" _
GX head for playback x 2;
; `$ m$ F; ?7 ~, Q3 X4 e: `0 X" \Erase head x 2
% ~4 {( E7 e' H$ n* F4 fMotors....* V: A1 r0 A. d" c9 d
AC Servo motor for capstan drive x 1; 8 `, F* h1 F7 ]5 o
AC Eddy current motor for reel drive x 2
k0 s3 |4 }% e- [$ ~$ q3 {1 |Tape Speed....( G- Y* P% z, c3 @9 k2 h) R9 }' i6 {
19 cm/s +0.8% (7 ½ ips.);
% w& m; g( |! r) p5 [9.5 cm/s +1.0% (3 ¾ ips.)
( ]& l g: ?1 } gWow and Flutter....
& W4 E4 O3 e" g) q4 sLess than 0.03% WRMS at 19 cm/s;
# K' y1 `9 z; H2 zLess than 0.04%WRMS at 9.5 cm/s , e- [, [, _/ m
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
h) V1 L/ S; J0 O* NFrequency Response....8 g! b: m. y/ G' U- @# W! b
25 to 33,000 Hz +3 dB at 19 cm/s; % [* b: O- O( i- @
25 to 26,000 Hz +3 dB (0 VU); - y2 v9 u: n) r5 P# d) v3 n" Y2 n7 s
25 to 33,000 Hz +3 dB at 9.5 cm/s;
4 _, e3 q/ X! n. ~; o25 to 15,000 Hz +3 dB (0 VU)
5 B& P) W" i3 w- y/ K# T- N0 ^Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
2 E6 g6 k* D2 K* FDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
7 p9 c4 v' X1 K! Y6 sHarmonic Distortion....Less than 0.4% at 19 cm/s
+ w. q! O9 q/ R" F# tInput....2 R9 m2 I0 J# T$ s( ?. T
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
" Z9 i* Q/ f! E, r0 TLine: 70 mV . X2 `7 O8 x+ T; C
Output....
( y! H# A+ h9 wLine: 410 mV;
2 C6 I- p- O5 }, w; t2 A- x# I( [Phone: 1.3 mW
9 Z7 t% M! B3 X9 z1 U# UPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
1 }! O9 Z% H% I' wDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
5 _6 C' k" _9 o, eWeight....23.2 kg (51.0 lbs) |
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