AEA AEA RPQ500, Руководство пользователя

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cables can cause absence of signal which, as Richard Heyser once com-
mented, is 100% distortion. Even more potentially damaging, defective
cables can cause loud “pops” or other noises, which if the level is high
can launch loudspeaker cones across the room.
Line Input Mode
The P48 Phantom Power cannot and should not be applied to line-level
devices. In Line Input Mode the inputs of the RPQ500 will always be
free from P48 Phantom Power, even if it is accidentally engaged. Never-
theless, it is recommended to keep the Phantom Power off when the unit
is used in this mode.
Output Connections
The output of the RPQ500 emulates a transformer-coupled output and
can be used as either a balanced or unbalanced signal (depending on how
your cable/system is configured). When balanced, the maximum output
level is +28 dBu; when unbalanced, the maximum level is +22 dBu.
(These are as measured into a 600
Ω
load; the recommended load is >
10k
Ω
). 0 dBu = 0.7746 V rms.)
When unbalancing the XLR output, pin-3 must be tied to ground at the
receiving end (i.e. the input of the following device). Do not tie pin-3 to
ground directly at the output of the RPQ500.
1 2
3
Mic Input
1 2
3
Line Input
+48 V
Phantom
On / Off
7
10
13
17
21
26
31
36
41
45
51
56
+7 dB
+56
18 360
85 Hz
Low Cut Filter
High Gain
26
kHz
2.1 kHz
9
kHz
+20
+0
Peak
dB
Boost
+19 -64
+6 dB
- 6 dB
1 2
3
Balanced XLR Out
(Pin 2 High)
Max Gain: +81 dB
Level LEDs
Red snaps on at +24 dBu
Yellow brightens from 0 to +20 dBu
Green snaps on at -6 dBu
RPQ500
Single Line
API 500 series preamp
with
P48 and CurveShaper
Minimum path, high gain and impedance, fast transient recovery JFET preamp
A
udio
E
ngineering
Associates
www.ribbonmics.com 626-798-9128
Input Impedance:
10 k
Ω
Input Impedance: 33 k
Ω
Input Gain
Output Gain
Handcrafted in Pasadena, California
+0 dB
Curve Shaper
Figure 2: RPQ500 Single Line diagram