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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。# d, @/ u' O- r! g& j( N& w9 x
各项指标如下:3 @" n# ^! o. t4 J$ L. r
& @) C2 P B7 }0 v5 YTrack System….4 Track 2 Channel Stereo System x2 o0 N( K5 Y( ^9 O
Reel Capacity....Up to 10” Reel
) Y" ?3 f1 y5 SHeads....
9 i' Z( ^( r5 Z4 A3 p; w9 N @GX head for recording x 2; " }6 R" n- I* I# j. ?! X3 G2 S5 \) _
GX head for playback x 2;
- N. x# E9 v, bErase head x 2
7 `1 t7 o, B0 e$ c0 w4 ^; jMotors....
9 r' o, M; m# ^5 R0 ~8 CAC Servo motor for capstan drive x 1; $ I! J2 r4 F! D2 U/ q! l" j$ S
AC Eddy current motor for reel drive x 2 9 W* @3 ]; E! F. f: X/ ^6 S5 P
Tape Speed....! K9 G- G8 N5 a) X
19 cm/s +0.8% (7 ½ ips.); # g0 s; d# l e
9.5 cm/s +1.0% (3 ¾ ips.) 3 c1 O7 }; d# N1 V3 \* k, b
Wow and Flutter....0 D/ N. g0 c2 g( R& ~8 t% y
Less than 0.03% WRMS at 19 cm/s; , |. G& [" U: J, z0 U
Less than 0.04%WRMS at 9.5 cm/s ; C4 N5 ?9 M/ S- `
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 7 m7 @5 g0 Y2 x- y6 f9 W
Frequency Response....
0 y1 {7 p0 y: j- |+ I4 e25 to 33,000 Hz +3 dB at 19 cm/s; ! s9 x- B: J! h: v {3 ]: O
25 to 26,000 Hz +3 dB (0 VU); + q4 N4 f/ G+ s( A
25 to 33,000 Hz +3 dB at 9.5 cm/s;
+ J$ D, c; l j25 to 15,000 Hz +3 dB (0 VU)
' w: t! q5 r! i0 }Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
3 Q6 Q$ Q c( D$ s) DDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) - |) J# o% u" t( d( G$ P4 D
Harmonic Distortion....Less than 0.4% at 19 cm/s . @* J. B5 m& | V4 h7 X
Input....& C3 j7 Y3 c, v- m" s5 |5 d1 C, N
MIC: 0.25 mV; Required microphone impedance: 600 ohms;
# |+ A. @5 N9 [" i8 q P6 L" \Line: 70 mV
- M: H4 P, O5 A7 c: u5 l0 EOutput...." `0 C' Q, D& U- b. T9 W9 p% `
Line: 410 mV; ! b, Y9 L, m, w: U. n" C) k5 R; E5 M
Phone: 1.3 mW * |! I" i* H: s
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
1 G% g7 s4 V5 c( j/ d% c( qDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) ; v' \3 k3 X+ t- P, P( s
Weight....23.2 kg (51.0 lbs) |
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