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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。. z/ t8 G. a+ S; [6 O
各项指标如下:
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Track System….4 Track 2 Channel Stereo System 6 b% `/ }$ Q) x$ h; C
Reel Capacity....Up to 10” Reel * a# s! F: J: Y, N
Heads....( K8 x# b4 i6 t" |0 _/ v1 B
GX head for recording x 2;
I6 s3 z' j* z+ a; u4 AGX head for playback x 2;
/ N! Z# z6 e% BErase head x 2
+ b, |, r) c% k# YMotors....
6 }2 E1 n% X9 t h% tAC Servo motor for capstan drive x 1;
6 E" d7 l# {2 L+ J" ~9 o* c5 AAC Eddy current motor for reel drive x 2
6 |9 L" D, r* w% D J* fTape Speed....- h. d3 Q( B8 X n, E( P
19 cm/s +0.8% (7 ½ ips.); , a0 T6 B6 q& w- K( |: J8 e
9.5 cm/s +1.0% (3 ¾ ips.)
4 x5 z; b0 m* g# r* G" VWow and Flutter....' C5 l/ y9 t9 _, y9 F+ S7 j9 |0 r
Less than 0.03% WRMS at 19 cm/s; # y, c; s1 K3 E- b. @$ O- U0 [
Less than 0.04%WRMS at 9.5 cm/s ( _9 y0 S2 y: D( r' ] A( y8 W
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 5 M4 @+ b+ V r' B; g2 Z R
Frequency Response....
# y5 G- R0 D' n% x' c4 E& [25 to 33,000 Hz +3 dB at 19 cm/s; 6 A( f! R; @& ] b) |- g& y
25 to 26,000 Hz +3 dB (0 VU); ; r1 X" [5 D+ c# A/ Y: G
25 to 33,000 Hz +3 dB at 9.5 cm/s; ( H1 |1 r% h* W& Y, ~
25 to 15,000 Hz +3 dB (0 VU) ) ~* b0 }) x" U2 i8 {
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) ! U" P* j1 C r
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 7 g: @' H6 y9 @- k' {8 B1 L$ X
Harmonic Distortion....Less than 0.4% at 19 cm/s
! `' F3 q, G& b! h( Z0 [4 _% _Input....5 I6 d6 i0 M" x' @# [0 X e
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
8 h# X7 o6 B: g3 B2 _5 VLine: 70 mV
- K% p( I8 m: H2 J+ a4 z0 A. n- xOutput....2 m( O- I7 T9 z3 }$ L8 o- `
Line: 410 mV;
( _+ G r, t6 ?2 O0 H+ G0 @- G. O2 ?! wPhone: 1.3 mW
: t- G% ~5 b0 l# [, y5 G: ~% e! {9 MPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable 4 {) l w9 W4 w( @
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 1 i2 ?; I' d6 v' z
Weight....23.2 kg (51.0 lbs) |
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