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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。 B0 d$ B6 H$ Q Z; F
各项指标如下:
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Track System….4 Track 2 Channel Stereo System 6 E* M( @0 {9 a3 y/ M7 B" H
Reel Capacity....Up to 10” Reel % y6 K+ i8 m- `5 y, _/ \
Heads....
0 a$ N7 f, s- i4 g1 hGX head for recording x 2; : D3 O5 g9 H- l2 L3 F
GX head for playback x 2; 8 U0 i7 G" f& v& a: K" h1 O
Erase head x 2
% o G5 ~* M+ K; m, JMotors....
$ f8 `9 p; J( r1 @: h# R7 MAC Servo motor for capstan drive x 1; 7 o, ~6 e$ O) O# b+ t# R% ~
AC Eddy current motor for reel drive x 2
* r Z3 S& P- H/ ^; s2 FTape Speed....
2 t! s0 ], L) }9 B1 O% f19 cm/s +0.8% (7 ½ ips.);
& V2 |, R" s) s8 }. S$ t9.5 cm/s +1.0% (3 ¾ ips.)
% R% N' z& d0 L3 B# C+ s) x, s% }0 UWow and Flutter....+ ^: h. w. B% H
Less than 0.03% WRMS at 19 cm/s;
- S& P, Y' K2 T' A7 Q3 BLess than 0.04%WRMS at 9.5 cm/s
: T" c; c: n& _3 X6 {# g* JTape Winding Time....75 sec. using 360 m (1,200 ft.) Tape 7 }( i3 ?: ?; A/ V2 Z) I! \, \
Frequency Response....
/ n$ _, @% K0 B0 k) O25 to 33,000 Hz +3 dB at 19 cm/s; o4 J% x% ]" N
25 to 26,000 Hz +3 dB (0 VU);
* F6 p1 w! M8 [. Z% K$ R25 to 33,000 Hz +3 dB at 9.5 cm/s; 8 q" z0 v' z' t/ A" N3 Z2 n4 W
25 to 15,000 Hz +3 dB (0 VU) 8 q. L0 I$ d) n) Z, I
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) # w% j/ j1 R3 q M; `) R9 y+ m8 ?7 s
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 8 W" t5 \# c* A& S8 o- b+ u
Harmonic Distortion....Less than 0.4% at 19 cm/s
0 K' @% E; \ I. LInput....
7 ?! B% _; p# n1 TMIC: 0.25 mV; Required microphone impedance: 600 ohms; 2 [. ~2 w% V' S/ Z' ~ P
Line: 70 mV
" c# B4 U$ ~- Z4 W" j- \Output....
% o/ j z2 {, ]8 b* y# gLine: 410 mV; * }' C# C$ y: ~. d
Phone: 1.3 mW , F" D) l5 U: @" P7 g: R$ b6 ]" z
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
. q3 M2 @1 H3 {% G* I! n( rDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) : f7 b) Y4 I8 w
Weight....23.2 kg (51.0 lbs) |
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