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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。5 L7 \* @1 ^+ i K# {
各项指标如下:. ?' \+ f. K' O" }5 U6 k
6 h/ a; a, H6 Q- B
Track System….4 Track 2 Channel Stereo System
m) O& U- {$ j. Z) IReel Capacity....Up to 10” Reel % M6 v* ^6 D, O6 f* U" d) Z2 S
Heads....1 M* Y1 D4 W2 Y) z! d4 u2 \
GX head for recording x 2;
0 h2 j% c0 m8 m& CGX head for playback x 2; - ]5 H- _ f6 l% j4 ^: U
Erase head x 2
9 c6 ^0 @# D2 U' ]' K$ bMotors....
6 D5 _2 Y" A( T) I" LAC Servo motor for capstan drive x 1;
# C ~. T7 `# C1 w6 mAC Eddy current motor for reel drive x 2
$ B6 d" @+ u% ^Tape Speed....- z, ^" |; V2 _, r8 A1 x' ~' I8 C
19 cm/s +0.8% (7 ½ ips.); 3 j8 V6 q: d0 O* h
9.5 cm/s +1.0% (3 ¾ ips.) + r' V) |$ l$ b2 k% B
Wow and Flutter....
! a& C3 t- x8 `& ^1 zLess than 0.03% WRMS at 19 cm/s; & J, T: m( r/ K6 {4 X
Less than 0.04%WRMS at 9.5 cm/s , C1 `* j5 ^! `
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
" X2 ?6 R+ F: r( K* b% w4 ^9 A3 MFrequency Response....7 T% \" K, e' U8 P
25 to 33,000 Hz +3 dB at 19 cm/s; + w3 g, j; k3 c }) `4 ^& k- a: z
25 to 26,000 Hz +3 dB (0 VU);
' I% U) N# l; H. P25 to 33,000 Hz +3 dB at 9.5 cm/s;
1 b) s" r7 M7 m, r25 to 15,000 Hz +3 dB (0 VU)
?: ?( n/ O5 @( B0 z/ Q6 \Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
6 D. ]* m: e, M! ~ S; t1 SDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 8 o# {4 X* e. u( f5 c j
Harmonic Distortion....Less than 0.4% at 19 cm/s
0 }0 O' N8 d3 {Input....& P5 G! ]$ K/ ~( G- y. d( B" H) ]
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
$ [; G" ~# }; O( a; n& B$ vLine: 70 mV
+ {; @7 \" a* I$ k) L5 t f. e9 H: hOutput.... h: T6 Y! U7 ?2 W: D8 E; N& _7 B
Line: 410 mV;
- m% T' s% ]7 J; L. @3 z/ x4 CPhone: 1.3 mW
B! ` g# v. @0 G7 HPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable * J9 h8 d5 w+ {; B8 W
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
6 L( ~3 v+ W) Q8 b% O8 JWeight....23.2 kg (51.0 lbs) |
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