SPL TwinTube, Руководство пользователя

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Analog Elemental Series
Premium Mic Pre | Technology
Premium Mic Pre | Technical Specifications
Stage 3 – The Instrumentation Amplifier
An instrumentation amplifier is following the discrete differential amplifier to produce the
output signal’s voltage. Functionally a summing amplifier it eliminates possible disturbing
voltages and also contributes to the main amplification with an addi6 dB.
Foil and Styroflex Capacitors
Only the best MKP and styroflex capacitors are used in the various circuits. They sound more
open and dynamic in contrast to the conventional ceramic capacitors.
Output Stages
The Premium Mic Pre is based upon a transformer output capable of driving very long cables
(up to a few hundred yards, depending on the capacity of the cables and the input stages on
the other end). The maximum output level is +22 dBu.
Audio
Frequency Range 10 Hz- 68 kHz (-3 dB)
CMR -87 dBu
(@ 1kHz with -30 dBu Input level and 30 dB Gain)
THD&N @ 1 kHz
Input Level
Gain THD&N
-30 dBu 30 dB 0,0071%
-60 dBu 60 dB 0,078%
S/N Ratio Gain A/N Ratio A-weighted
80 dB -48,3 dBu
60 dB -64,2 dBu
30 dB -89,0 dBu
E.I.N. (Equivalent Input Noise): -128,3 dBu
Dynamic Range 111,0 dB
Input
XLR socket, transformer balanced
Impedance unbalanced
ca. 2,0 kOhm
Impedanz balanced ca. 4,0 kOhm
Max. Input Level +10 dBu, +30 dBu with Pad activated
Output
XLR socket, transformer balanced
Impedance unbalanced
ca. 60 Ohm
Impedance balanced ca. 120 Ohm
Max. Output Level +22 dBu
Control Elements
Mic Gain Range 18 dB – 72 dB
Pad Switch -20 dB
High-Pass Filter fg = 75 Hz (-3 dB)
Phantom Power Supply 48 V
0 dBu = 0,775 V. Sugbject to change without notice.