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发表于 2012-5-21 23:23:18
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本帖最后由 dan3963101 于 2012-5-20 00:12 编辑 / n, f' w- I+ h' g. q
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" Z8 c8 G* A. `, U英文电子说明书: D* j( h; h P' N( ~4 u" ?7 A. r
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
; C- \* [4 n& K' W default settings. The subsequent settings remain stored in a Flash EPROM
, U- q) w0 }3 S4 a9 O A% r after switching the unit off (unit contains no battery).5 f' S" S7 F1 ^; Y+ b- z
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position6 A, d$ A$ q- v
between microphone and line sensitivity setting ranges.
/ @ u7 }. _. C2 F/ n V# e+ o* p- m Mic: Range –40...+20 dBu2 Z; ?7 h( F+ W1 u
Line: Range +14 dBu, +24 dBu- b0 u) b0 y: b+ Q
[3] Fine Gain Potentiometer for fine input sensitivity setting.) u4 S+ {, k6 W4 b
Range of additional gain: 0...+15 dB.
3 Z6 q+ x) e8 b Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents# D/ z8 |( P$ Q7 m* I! ?' _
the dBu value of an analog input signal which causes a full-scale output of
( g: ]' R6 U! c' i the A/D converter. x, I; u0 R7 `8 X, e
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
1 S D1 O1 a6 f# l the peak level is therefore +16 dBu. The “Input dBu FS” rotary N& G1 L- z3 U3 q6 B' J
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
1 i8 k3 ]9 c4 I8 Z Gain” potentiometer [3] increases the gain by 8 dB.
5 M4 _ S8 A# u[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.$ V0 N0 V' q/ i0 b6 _, j
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals& t, p" j/ [2 e, q. P' U* ~
have more body; percussive instruments are less aggressive.
/ i- f& M! }1 w The group delay behaviour due to AC coupling of the stages is different in
% @, ^' ]) y- w# A1 t tube amplifiers.0 |6 }" I- U! Z6 [: _
The “Bass Warmth” control allows to select the frequency range) j2 Z9 V$ V. M( j6 e
(10...200 Hz) within which the effect is active.& Z# R! p) B% q. B& f; }
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.. t" a7 E. g$ `
Valve amps have a characteristic response, mid-frequency harmonic content$ N8 w: W! `) n W1 u
is emphasized.
2 @! w% \+ `6 y5 q2 ][6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer./ ^5 s, H& m7 G9 f0 L( W
The harmonics spectrum of a delicately overloaded valve amplifier is completely
% F( j+ l: Y- ?- H0 L3 E: H, v different from an overloaded transistor stage.: E2 r5 O; G( z) @
The “Gain” control adjusts a gentle overload while the odd-harmonics content* d2 I" u* s2 R" {! x% _( I
can be adjusted with the “Clip” control.4 T% S/ B3 t) T* |: e S- D, Q- \
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* N \$ Q% N! n O0 F
dBu FS.
$ i# |: g R' a: p4 R1 [[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the3 p1 U1 I6 ~! z
desired channel." T' g/ E2 F9 m; b$ b0 A3 d& H
The “VALVE” LED is on when the Valve Dignifier stage is active.
& L3 [9 a3 x5 ^1 B' |# y( e[9] INSERT INSERT function.7 [1 z2 \% y+ p, _; _8 W/ x
First key pressure: INSERT POST VALVE, the Insert Send is tapped after' u& F- K2 o- T5 l6 K
the valve stage (display: “INS”); the Insert Return is directly fed to the Line6 N. n, e( ~0 l' B3 y, o" r
and AES/EBU outputs.
, s, `# m/ y$ G2 O* | Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before8 U/ ?, ` K5 ]" P
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
Z4 x2 r7 l' e. X the valve dignifier stage to the Line and AES/EBU outputs.
8 r S v1 F* j Third pressure: INSERT OFF, the input signal is fed via the valve dignifier, i8 T4 Z g- E. D* P* d7 @
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output2 C. ?/ k/ Z' X I
receives this signal; display: none).0 Y) W' V1 x& |( H0 p, H7 p5 o
Insert Send and Insert Return are electronically balanced and equipped with! S4 `, w3 V$ u, ^ S
XLR connectors.
& W- f- p9 x1 [[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or8 t2 h' y0 R% X0 |+ w1 q
ADAT digital interfaces. Each input channel can be switched to one of the6 {. W$ z2 Q4 }3 b0 V
channels 1...8 of the multichannel interface. If desired, also a mono mix is
4 `5 {( M# d6 D( z2 o possible by selecting the same output channel for both input channels.
* T% L5 \$ t n" Z. U7 k[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone! C0 p* {2 V" j3 m' Z4 v
channel.1 n' J [; T8 |% D
Can be operated only if the input gain selector is in Mic position. The P. _' u1 x3 v& N
setting remains stored when switching over to a line gain setting.! }! n |+ U, x$ T4 `) w
[12] Activates the high pass filter on the microphone inputs of the desired channel.& C3 E' m; \7 b8 O- O
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.' g1 q# {+ Y/ j- y3 K
Can be operated only if the input gain selector is in Mic position. The
1 D T: g6 Z D# y0 z setting remains stored when switching over to a line gain setting.. ~% j& s Q3 B
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
. S6 T$ w; u' C0 @/ _[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
; Y3 Y. ~0 q" h “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
" C0 a+ p7 h1 U) {# `0 F Noise Shaping (display: “16NS”) can be selected.) u( S. {1 E8 \4 ~
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
4 q( R5 P, t' \$ d7 r& j I INT 48 Internal quartz reference, 48 kHz
* G6 C; K! L; J& J7 \. K1 L INT 44 Internal quartz reference, 44.1 kHz
% o9 L) d. x g* D WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
9 j0 d6 _: B# ? AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized); q& O, s/ b" q/ t* Z9 s8 G
AUTO Selects sources automatically in the sequence AES-WCLK-INT; L9 j; B( y7 [; e6 f
VAR Indication only, active if the external source frequency deviates from 48 or8 c% h5 D h: L! l' X9 B
44.1 kHz for more than approx. ±3 %., ?$ B) |& K) l
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –5 w! e7 v2 z( X) ]2 d
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
) U. l. V8 M9 F D[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce: U% I4 G. b! H; w' L5 N; M5 h% b
the danger of overloading the A/D converter with short signal peaks (if" [* W5 t v8 R7 `, ]5 [, f1 p
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
: n4 E) x# r6 G5 A allowing for approx. 6 dB reserve before hard clipping occurs
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