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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。
& u s, z: l: ?7 d( N; @各项指标如下:
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Track System….4 Track 2 Channel Stereo System 2 N( t' P2 ?8 [; }( }
Reel Capacity....Up to 10” Reel
8 L3 O B8 k5 PHeads....# I8 B/ f9 C d
GX head for recording x 2; 2 D8 N0 K$ F& h. @
GX head for playback x 2; 6 t0 C3 ?- S; P9 ^
Erase head x 2 6 ]* a' I& P p R
Motors....! ]5 }; E, a. m4 C% B0 F
AC Servo motor for capstan drive x 1;
5 a# U7 t: T* }AC Eddy current motor for reel drive x 2
+ Y! }! E# ] ^7 v6 k+ I- ITape Speed....
% d0 H# m5 u7 W4 s19 cm/s +0.8% (7 ½ ips.); 5 e0 q" V4 p" c4 ^5 d
9.5 cm/s +1.0% (3 ¾ ips.)
1 W2 ?5 _7 J# `' k- NWow and Flutter....
4 n8 ?' e/ a FLess than 0.03% WRMS at 19 cm/s; 9 x9 m! H, i, S: ]! l/ y% I6 N
Less than 0.04%WRMS at 9.5 cm/s $ w( ?9 x: B4 d+ l
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape : [$ }" v5 y, e- \0 D; R+ ?
Frequency Response....* U& \' V3 Y0 l9 m+ |: r
25 to 33,000 Hz +3 dB at 19 cm/s; 0 G- i* w5 J% y$ m& M1 E# n
25 to 26,000 Hz +3 dB (0 VU); - c1 U, r8 D8 y2 ?$ w# N
25 to 33,000 Hz +3 dB at 9.5 cm/s; 1 `( H; G% g m1 O7 ]$ S
25 to 15,000 Hz +3 dB (0 VU) 0 T: d1 \/ _& w: K5 K
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF) . x9 @- B/ H+ Q- A0 Q/ t$ l* c' U' Y( |
Dynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level) 0 T1 B% |3 K$ G/ T' H7 A0 q
Harmonic Distortion....Less than 0.4% at 19 cm/s
! m9 p- y3 j+ V$ j+ \3 H7 D- lInput....! k$ O( N4 H. v
MIC: 0.25 mV; Required microphone impedance: 600 ohms; ( _& f+ Z- @; Y2 T0 Q* _& |4 _
Line: 70 mV
6 x9 s) o( x3 ~! `Output....
- m7 t2 z' z* W( wLine: 410 mV; 6 B& {9 O* }/ h2 j* y2 Z. H+ n
Phone: 1.3 mW
0 _4 R0 I7 n$ g( n$ u. qPower Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable 0 H& E5 o& X5 e) P1 e4 k" N, B( i
Dimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches) 5 i% H( i: ^: F+ w9 z. [# r
Weight....23.2 kg (51.0 lbs) |
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