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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。
8 ^+ G9 w4 I& n, y- j- ?4 F各项指标如下:
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. n# D9 ?% S& g# w! A% ITrack System….4 Track 2 Channel Stereo System % r% P5 ?( S Y% @' S
Reel Capacity....Up to 10” Reel
1 [. U, Y) k) W5 u5 P+ o; V) X/ Q5 y* aHeads....2 a6 b: N# T( d! L' U
GX head for recording x 2;
" A% K! h3 u# s& g/ PGX head for playback x 2; I x$ t4 v9 c2 R7 A. Z( c
Erase head x 2 / C! Y. z7 m$ G; H2 ?' }
Motors....
1 W' M4 K3 u) B' [' vAC Servo motor for capstan drive x 1;
: m/ B% u2 t( d5 W/ @AC Eddy current motor for reel drive x 2
. s3 m, }3 x, P- P8 A" ZTape Speed..../ H) Y4 U1 g j$ o
19 cm/s +0.8% (7 ½ ips.);
& r+ {: C* c; h$ S% ]& ]( b# i9.5 cm/s +1.0% (3 ¾ ips.)
7 A% V# X; D( ^Wow and Flutter....
8 I6 l% b8 U2 U, T9 QLess than 0.03% WRMS at 19 cm/s;
' Q0 L: H$ t- i( X( C5 E9 wLess than 0.04%WRMS at 9.5 cm/s , k0 r( c+ b: D% n' ^( L
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 6 ]9 w5 i! P6 r
Frequency Response....6 O/ i7 l; W' K: U" l9 p2 [+ k
25 to 33,000 Hz +3 dB at 19 cm/s;
) ?; _0 T8 e2 i5 f9 p3 k0 ?25 to 26,000 Hz +3 dB (0 VU);
8 F3 t! U. F% c" Y/ R25 to 33,000 Hz +3 dB at 9.5 cm/s;
5 O$ c8 U( U A25 to 15,000 Hz +3 dB (0 VU)
/ I% \+ ?1 h/ XSignal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
% D$ ~& J \ K6 pDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) / C( V) C6 q$ f6 {
Harmonic Distortion....Less than 0.4% at 19 cm/s " Y. E$ M( w4 S2 C/ o! r
Input....1 }7 @. w. W4 W$ V' t8 S
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
# w J$ N1 K( y* i4 ~ `# g& v sLine: 70 mV
$ U7 n) ^: U& W. Q5 ]' qOutput...." P& b) m( ]& ]9 o M9 ^
Line: 410 mV;
7 v/ w+ o7 X) A. \* OPhone: 1.3 mW
% Q8 h, D, q8 d; \2 N( zPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
8 M( X0 V* V" V: q* T* I' @0 kDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
6 t* p9 A9 j" H1 m( [3 A3 ^Weight....23.2 kg (51.0 lbs) |
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