Owner`s manual

10
STT-1
(3) POLARITY REVERSE SWITCH "POL REV"
A pushbutton switch which, when depressed and illuminated, reverses the polarity (180 degree inversion) of
all input signals, including the DI, mic input, and line input.
(4) TRANSFORMER SELECT SWITCH "XFMR IN"
A pushbutton switch which, when depressed and illuminated, places the Millennia MIT-01 audio path trans-
former in the front-end circuit. When used with high level signals, such as when using a pair of STT-1 units
for mixdown applications, the engineer may notice a marked 'enhancement' in sonic signature when the trans-
former is inserted. We have designed this transformer to provide a unique, "fat" sonic coloration with conden-
sor microphones which gives the engineer a richer, fuller, 'bigger-than-life' image when used with aggressive
sources such as drums and electric bass. Read more about this transformer in section (1).
(5) OVERLOAD INDICATOR "OL"
A single red LED (light emitting diode) which begins turn-on (most dim) around +18 dBu and becomes
fully illuminated at +24 dBu at the direct output. The gradual illumination feature offers better indication of
approximate direct output level when compared with a typical "on/off" LED.
(6) VACUUM TUBE GAIN CONTROL "VACUUM TUBE GAIN"
A potentiometer which offers a front-end vacuum tube gain range of approximately 18 dB, being an absolute
gain range of approximately +22 dB to +40 dB at the direct output. When Line Input is used, it is recom-
mended that this Gain Control remain fully CCW with the Output Master Level control set between 12
o'clock and 3 o'clock as a starting point. If less gain is required, lower the Master Level. If additional gain is re-
quired for line level signals (such as unbalanced "-10" signals), raise the level using use the Vacuum Tube Gain
Control. Line level signals sound fantastic in the Origin, but for optimized performance of EQ and Compressor
with line level sources, the stand-alone NSEQ-2 and TCL-2 Twincom stereo products offer slightly improved
specifications. This is due to the additional (and required) interface circuitry found in the Origin. NOTE: We
did not attempt to unify the rotational position or resolutions of the SS and VT gain controls. That is, the user
cannot place each gain potentiometer at the same angular setting and expect the same gain. Rather, we have
optimized each gain amplifier unto itself, not in relation to the other gain amplifier.
(7) SOLID STATE GAIN CONTROL "SOLID STATE GAIN"
A potentiometer which offers a front-end solid state gain range of 40 dB, being an absolute gain range of
approximately +10 dB to +50 dB at the direct balanced output. The Origin is optimized for mic-level and
instrument-level signals. When Line Input is used, it is recommended that this Gain Control remain fully
CCW with the Output Master Level control set between 10 o'clock and 2 o'clock as a starting point. If ad-
ditional gain is required for line level signals, raise the level using use the Gain Control. Line level signals
sound fantastic in the Origin, but for optimized performance of EQ and Compressor with line level sources,
the stand-alone NSEQ-2 and TCL-2 Twincom stereo products offer slightly improved specifications. This is
due to the additional (and required) interface circuitry found in the Origin. NOTE: We did not attempt to
unify the rotational position or resolutions of the SS and VT gain controls. That is, the user cannot place each
gain potentiometer at the same angular setting and expect the same gain. Rather, we have optimized each gain
amplifier unto itself, not in relation to the other gain amplifier. NOTE: An approximate 20 dB of additional
solid state gain is available if necessary. Contact Millennia for customization information.
(8) SOURCE SELECT SWITCH "SOURCE: MIC - LINE - DI"
Rotary switch (Grayhill, military-spec, gold plated) which selects the front-end input source as either micro-
phone, line level, or 1/4" DI (instrument, keyboard, etc.). Mic, Line, and DI inputs all feed the same front-end
amplifiers (selectable via switches as either vacuum tube or solid state, transformer-coupled or transformer-
less). When used as a solid state amplifier, the circuit is essentially identical to the front-end found on Millen-
nia's acclaimed HV-3. When used as a vacuum tube amplifier, the circuit is essentially identical to Millennia's
sublime and musically euphonic M-2b front-end. The DI input offers a standard 1/4" phone jack exhibiting a
very high input impedance via a single 12AT7 vacuum tube circuit.