Millennia STT-1 Quick Start Guide User Manual

Millennia, Quick start guide

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Millennia

Media & Music Systems 

Quick Start Guide 

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STT-1 Front Panel

1. Front-end Amplifier Select Switch — selects the front-end

gain amplifier as either entirely vacuum tube (VT) or entirely
solid state (SS).

2. Phantom Power Select Switch — provides phantom power

(+48VDC) to the microphone inserted into that channel. When
the LED is on, phantom power is applied simultaneously
through dual 6.81k ohm resistors to pins 2 and 3 of the three
pin female XLR input.

Use phantom power with condenser and other microphones
requiring traditional phantom supply.

CAUTION: Applying phantom power to ribbon

microphones could damage them. Do not use
phantom with ribbons, moving coil, and other

microphones which do not require phantom power.

Do not insert or extract mic cables from the

preamp when phantom power is active.

3. Polarity Reverse Switch "POL REV" — reverses the polarity

(180 degree inversion) of all input signals, including the DI, mic
input, and line input.

4. Transformer Select Switch "XFMR IN" — places the
Millennia MIT-01 audio path transformer in the front-end circuit.
When used with high level signals you may notice a marked
“enhancement” in sonic signature. We have designed this

transformer to provide a unique, "fat" sonic coloration with
condenser microphones which gives the engineer a richer, fuller,
“bigger-than-life” image when used with aggressive sources such
as drums and electric bass.

5. Overload Indicator "OL" — A single red LED which begins
turn-on (most dim) around +18 dBu and becomes fully on at +24
dBu at the direct output.

6. Vacuum Tube Gain Control "VACUUM TUBE GAIN"

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.

7. Solid State Gain Control "SOLID STATE GAIN" — 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.

8. SOURCE “MIC-LINE-DI" — selects the front-end input

source as either microphone, 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 Millennia’s HV-3. When used as a vacuum tube
amplifier, the circuit is essentially identical to Millennia’s 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.

Parametric Equalizer Section

9. Band In/Out Switch "IN" — places its associated EQ band in
circuit or out of circuit

10. Frequency Select Switch — selects fixed high and low band
frequencies

11. Peak/Shelf Select — When LED is on, EQ is shelving at 6 dB
per octave. When LED is off, EQ is peaking with a fixed "Q" of 1.0.

12. Boost/Cut Control — +15 dB of boost and -15 dB of cut.
Boost/Cut potentiometer has 21 detented positions for accurate
repeatability and session logging.

13. Parametric Frequency Control – selects EQ center
frequency.

14. Parametric Frequency Range Select Switch "10X"
When LED is on, frequencies as shown on front panel legend are

multiplied by 10X. When LED is off, frequencies are as shown on
front panel legend.

15. Parametric Q Control – EQ bandwidth.

16. Equalizer In/Out Select Switch "EQ IN" — places EQ in
the signal path.

17. Twin Topology™ Select Switch “EQ/COMP TT” – selects

the amplifier topology to be used by the equalizer and com-
pressor; vacuum tube or solid state. When the LED is on, EQ and
compressor are routed via a 100% Class-A solid state FET
amplifier. When LED is off, EQ and compressor are routed via a
100% Class-A vacuum tube amplifier. EQ and compressor
amplifier path topologies cannot be selected separately.

Compressor/Limiter Section

18. Threshold Control — threshold adjustment range of
approximately -20 dBu to +20 dBu. Threshold is most sensitive
when control is turned fully CW.

19. Attack Time — When fully CCW, the fastest attack time is

achieved (2 mS). When fully CW, the slowest attack time is
achieved (100 mS)

20. Release Control — When fully CCW, the fastest release is

achieved (20 mS). When fully CW, the slowest release is achieved
(3 seconds). Note that release times below 80 mS are normally
used only during de-essing. It is recommended that broadband
compression use >80 mS release times.

21. Ratio Control — When fully CCW, the lowest and most gentle
compression ratio is achieved (1.4:1). When fully CW, the highest
and most pronounced compression ratio is achieved.

22. Pre/Post Dynamics Select Switch "FLIP DYNAMICS"

determines the order in which the dynamics section is placed in
the audio signal path. When LED is on, the dynamics section
precedes the EQ section. When LED is off, the dynamics section
follows the EQ section.

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Millennia Media  STT‐1 Quick Start Guide 

022808 

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