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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。1 Z B7 i9 [$ }5 q7 I. q
各项指标如下:
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2 Y. R* L6 S& V6 n9 k( E6 x& vTrack System….4 Track 2 Channel Stereo System # w/ a7 F& n G; ?! B& P6 L% S. z
Reel Capacity....Up to 10” Reel
* B+ D5 Q8 I3 E, H K, `Heads....
, ] p( n6 M, i$ j( hGX head for recording x 2;
$ r3 H3 |$ @( {9 e2 CGX head for playback x 2; 7 ~% i0 c; S0 s, b1 v+ ?7 P
Erase head x 2
: K# ?8 l7 p H5 @8 r ?Motors....$ t" S: t: s$ P( O3 K
AC Servo motor for capstan drive x 1; ; x5 r2 [7 U# b- J- J
AC Eddy current motor for reel drive x 2 8 B( |2 @5 `' B+ j5 {; r) I
Tape Speed....5 @- G$ Z( B1 D+ Z6 S% Y6 z0 ]
19 cm/s +0.8% (7 ½ ips.); X% ^ P6 n2 Q, y( j, k
9.5 cm/s +1.0% (3 ¾ ips.) 0 s B& T) v- K. m% g0 e5 _
Wow and Flutter....
( c1 t2 x6 @ B- J. uLess than 0.03% WRMS at 19 cm/s; 1 B9 }: [& l* l; K7 l+ ]
Less than 0.04%WRMS at 9.5 cm/s ) |/ M4 L% E3 x( {
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape
2 r: g+ G3 g, h. fFrequency Response....
; e5 f% |. W# B+ ~1 x: H1 M% T25 to 33,000 Hz +3 dB at 19 cm/s; 0 e: ]8 k. w. t: S4 n. g
25 to 26,000 Hz +3 dB (0 VU);
/ w& K& j P. y7 ^5 `25 to 33,000 Hz +3 dB at 9.5 cm/s; 7 c9 b4 P9 O0 i" L/ T
25 to 15,000 Hz +3 dB (0 VU) : H3 s! [' e( h& V; Z" `+ d
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) 5 k2 @$ i6 `; H; ]- E4 I: z
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) - o- }) B1 t& ~
Harmonic Distortion....Less than 0.4% at 19 cm/s
& ^7 t' P7 b, x0 y, m/ h. wInput..../ v# |0 q i a
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
2 a9 s8 y. _7 ALine: 70 mV 3 q: g; \$ u! h' ?! @6 q9 R
Output....
. r& H& ]/ l6 g2 d0 _# a& ^+ y! XLine: 410 mV; 6 n' z! V8 M' D s9 `
Phone: 1.3 mW 6 f5 E: p4 z' O
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
8 b: g% |/ v1 e. nDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) ; `) u! p- ?3 x, O9 m% {* b
Weight....23.2 kg (51.0 lbs) |
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