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楼主 |
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。
2 ^* W6 l; u4 \; K/ y4 B+ I各项指标如下:
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) ^0 q9 t, _% B. n5 Z& N/ OTrack System….4 Track 2 Channel Stereo System
; d5 |) R% U# |! `Reel Capacity....Up to 10” Reel
$ c3 M, h5 U. A j' ~; E' [Heads....3 r, w" y) ^: N B5 _
GX head for recording x 2;
% ?3 L% F: G6 T2 d3 Y5 H5 WGX head for playback x 2; & t; F4 J( x' D2 V7 L0 S
Erase head x 2
; p5 o! `! ^) s; ?* X/ F& \ }Motors....
$ m, ~; z. w* p% |4 B0 RAC Servo motor for capstan drive x 1; ! A& W4 ^) x$ b3 l' R* R( o# H
AC Eddy current motor for reel drive x 2 / `- Y, T/ H: `5 B6 |8 D1 K
Tape Speed....
( h) V7 J) N9 h" E2 t3 |; W+ N19 cm/s +0.8% (7 ½ ips.);
, }) H$ }, D0 J) `- m. N# ?' N" i9.5 cm/s +1.0% (3 ¾ ips.)
8 S) _( M [3 S8 gWow and Flutter....
" R* P6 ^% c( t! u. G. z/ iLess than 0.03% WRMS at 19 cm/s; ( g2 Y6 h: J" V; Y1 X: A
Less than 0.04%WRMS at 9.5 cm/s
- \4 @; E g1 n* jTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
& ^9 [2 G. d2 ]- p. Z9 Q' W, e4 NFrequency Response....2 t5 F) V7 N7 H1 i6 [
25 to 33,000 Hz +3 dB at 19 cm/s;
2 W# u% `* c/ w" G25 to 26,000 Hz +3 dB (0 VU);
4 \) `% Y: ]: i" G9 ? J25 to 33,000 Hz +3 dB at 9.5 cm/s;
7 Y8 a5 u4 @( V8 `4 A7 O1 b25 to 15,000 Hz +3 dB (0 VU) # R+ a6 j) {* u( r6 S. k
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
- U3 h6 p( H N, ~6 D YDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) / S( O8 w( X2 ^$ b1 r2 o. Q
Harmonic Distortion....Less than 0.4% at 19 cm/s
/ D# w8 o8 V4 DInput....
- J2 J) I0 e9 k! C8 c5 _% Z" KMIC: 0.25 mV; Required microphone impedance: 600 ohms; ( B. I3 C6 D$ o! p, Z6 A4 }% G
Line: 70 mV
) t9 c/ o: s$ X( s$ T7 A$ T; NOutput....
/ d5 E v) _# ^: f/ L; ~2 WLine: 410 mV; % z* I) D) Z z1 n0 B+ a o
Phone: 1.3 mW $ @, b0 s K8 g: M4 A
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable . k' N3 Q# Y5 m' ~$ G
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
% E1 B& U8 p* aWeight....23.2 kg (51.0 lbs) |
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