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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。7 e4 J' L1 A" G5 P4 o2 R. N
各项指标如下:
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Track System….4 Track 2 Channel Stereo System
/ c5 K% V$ J% ~6 e% O" ^% e+ LReel Capacity....Up to 10” Reel 1 u( l' [# Z. J! G3 R' p
Heads....) s* `6 u# x2 U3 S: W6 h
GX head for recording x 2;
7 d8 E1 T- g) U$ ^# s+ QGX head for playback x 2; 2 U$ P" Y6 n1 {9 j1 y. V3 l
Erase head x 2
( N' \: f9 l9 x$ ^' A# qMotors....0 W5 A) }2 z& d# h3 H' L1 X2 C
AC Servo motor for capstan drive x 1; - p i- ^0 N/ I
AC Eddy current motor for reel drive x 2
: b8 X0 }: e, @( A3 U0 U. H! oTape Speed....7 C- Y% S" K6 y3 `7 D4 M
19 cm/s +0.8% (7 ½ ips.);
9 K, W. G) H% I# B& N7 \$ P9.5 cm/s +1.0% (3 ¾ ips.) 3 v5 C% a7 l: F/ O& L3 f' n/ u
Wow and Flutter...., I% g# u8 n/ Z* L- |
Less than 0.03% WRMS at 19 cm/s;
c# o" U' {2 V; E* G. }Less than 0.04%WRMS at 9.5 cm/s . e( ]" a8 t1 N; U8 K: @
Tape Winding Time....75 sec. using 360 m (1,200 ft.) Tape , U$ [0 t, H: Y
Frequency Response....
7 n; ^% Q8 f( G: F25 to 33,000 Hz +3 dB at 19 cm/s;
N7 B* _6 P* G7 E$ ?25 to 26,000 Hz +3 dB (0 VU);
, ^# y( g. n+ G. m1 A# |- [: ^25 to 33,000 Hz +3 dB at 9.5 cm/s;
- \$ k( P) A+ n25 to 15,000 Hz +3 dB (0 VU) 9 s2 D g3 w: c* t; K$ ?
Signal to Noise Ratio....Better than 65 dB (19 cm/sec dbx switch: OFF)
1 k4 U: x3 f, O- b% [" M8 RDynamic Range....128 dB (dbx switch: ON, 1 kHz, peak recording level)
* q) c% q% z$ P! G# s9 b0 t yHarmonic Distortion....Less than 0.4% at 19 cm/s ; C* b8 O0 y" c
Input....
3 A) b; o. T! _; N" V% j+ ]; cMIC: 0.25 mV; Required microphone impedance: 600 ohms;
: Z. A- @ a5 f8 eLine: 70 mV + o. w) b+ [( X
Output....
: m' k+ z! Y; k0 }: PLine: 410 mV; # U& g* R2 F) h0 S
Phone: 1.3 mW , r8 W8 j5 A5 p" _" h; t
Power Requirements....110V, 120V, 220V, 240V; 50/60 Hz switchable
' m1 U. |9 I* ]- lDimensions...440 (W) x 493 (H) x 256 (D) mm; (17.3 x 19.4 x 10.1 inches)
0 a) L/ S1 `4 J1 d8 nWeight....23.2 kg (51.0 lbs) |
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