PEAVEY KOSMOS User Manual
kosmos
™
Operating Guide
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2
kosmos
™
RATTLE YOUR PLANET
SUB HARMONIC GENERATOR
Thank you for purchasing the Peavey kosmos!
The kosmos is a low-frequency energy and stereo image enhancement system that turns the minor
foreshocks of an input signal into a sound that is off the Richter scale. It can provide planet-rattling
bass while simultaneously causing the vocals to stand out in a mix. In operation, its sub-harmonic
(QUAKE) processor watches the source material, analyzes the bass, then generates additional low
frequencies an octave below the original. The circuitry tracks the original bass without the mud of
other bass processors, and is tuned to your speaker size for best performance. The QUAKE’s
activity is seismically monitored and indicated by an LED. Its output level is fully adjustable.
In addition to the QUAKE process, there is an additional bass boost circuit (THUD) tuned an octave
above the sub-harmonic range that can be used to fill in and fatten out the low end. The left/right
stereo image can also be intensified with the XPANSE control, giving improved separation and
clarity (atmosphere).
All inputs and outputs are balanced. To guarantee proper levels, an input gain control is provided. A
0 dBu green signal LED and a +10 dBu red signal LED assist in input level setting. The subwoofer
output has a built-in crossover and independent level control allowing an equalized bass signal for
systems with subs. The effects, including the added QUAKE and THUD signals sent to the sub
woofer, can be bypassed for the occasional reality check, but once you’ve been to Emerald City –
Kansas will never be the same! So ditch the ruby slippers, Dorothy.
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ENGLISH
CONTROL IDENTIFICATION AND FUNCTION
1. GLOBAL BYPASS:
This switch disables all functions except the input gain control and the subwoofer level
control. When bypassed, the input circuitry still functions so that proper levels are passed
through. This is especially necessary if the unit is used to shift signal level from –10 dBV to
+4 dBu to match outboard equipment. The subwoofer crossover circuit still operates (without
the kosmos
™
bass effects) when bypassed. The status is indicated by glowing ruby slippers,
oops, I mean a red LED. Illumination indicates bypass mode, but after living in color in OZ,
the black and white of Aunt Em’s farm will appear even more drab than when you left!
2. LEVEL:
This control sets the magnitude of the earthquake (input gain and output level of the unit).
For optimum signal to noise and performance, it should be set so that the 0 dBu LED is
flickering most of the time and the +10 dBu LED does not blink. The +10 dBu LED indicates
bass content in the source material will cause possible output clipping or sanity damage. The
detented center position is the unity gain point at which the sensation of a northern California
quake can be experienced without the resultant damage.
3. CUT SUB BASS FROM MAIN:
This switch removes the QUAKE sub harmonics and the THUD bass from the main left and
right outputs. This allows all the added bass to be sent only to the subwoofer output when a
3-speaker system is used. When the left and right speakers cannot handle the additional
bass produced, this is the best way to route low frequency enhancements. The XPANSE is
always sent to the mains and is not affected by this switch’s setting.
4. SUB-TERRANEAN SHIFT:
This switch changes the sub harmonic tuning between two speaker size settings. The “out”
position has a higher epicenter (center frequency) that is more suitable for small speakers.
The difference is subtle; listen for its action on bass guitar frequencies. Deeper bass sounds
like it is coming from the floor instead of at your chest.
5. QUAKE:
This control adds a synthesized bass signal one octave lower than the source signal. The
adjacent yellow LED indicates tectonic activity in the sub bass range. This feature generates
bass sub harmonics that would register on a seismograph yet are pleasing to the ear, and
does no processing when the input signal is outside of its defined range. It will thicken and
deepen the bass of most program material and is especially effective on bass (kick) drums.
Since it boosts the low frequency portion significantly, care must be taken to prevent amplifier
clipping and speaker damage by excessive bass levels. It’s louder than you think.
FRONT PANEL
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6. THUD:
This control adds a specific band of bass frequencies (natural, not synthesized) to the sub
harmonics generated by the QUAKE process. It is tuned roughly an octave above the sub
harmonics and is used to even out the low-end balance.
7. XPANSE:
This is a combination control, simultaneously adjusting high-frequency boost and stereo
width. The minimum position is the flat setting. As the control is rotated clockwise, the
left/right image becomes wider and clarity is increased. This feature is designed to pull vocals
more to the front of the mix while giving them a 3-dimensional quality. Power chords played
on guitar benefit as well.
8. SUB WOOFER:
Built into the kosmos
™
is a 90 Hz subwoofer crossover. The subwoofer signal is the sum of
the QUAKE output, the THUD output, and the low frequencies from the 90 Hz crossover
network. This control sets the output level.
9. POWER:
This switch applies AC mains power to the internal power supply. When the unit is
functioning, the blue power LED will illuminate. AC power is required even in bypass mode,
since the unit has built-in active level shifting capabilities.
BACK PANEL
10. IEC CONNECTOR:
This is a standard IEC power connector. An AC mains cord having the appropriate AC plug
and ratings for the intended operating voltage is included. The mains cord should be
connected to the unit before connecting to a suitable AC outlet.
U.S DOMESTIC AC MAINS CORD
The mains cord supplied with the unit is a heavy-duty, 3-conductor type with a conventional
120 VAC plug with ground pin. If the outlet used does not have a ground pin, a suitable
grounding adapter should be used, and the third wire should be grounded properly.
Never break off the ground pin on any equipment. It is provided for your safety.
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NOTE: FOR UK ONLY
If the colors of the wires in the mains lead of this unit do not correspond with the colored
markings identifying the terminals in your plug, proceed as follows: (1) The wire that is
colored green and yellow must be connected to the terminal that is marked by the letter E,
the earth symbol, colored green, or colored green and yellow. (2) The wire that is colored
blue must be connected to the terminal that is marked with the letter N or the color black. (3)
The wire that is colored brown must be connected to the terminal that is marked with the
letter L or the color red.
11. SUB WOOFER OUTPUT:
This is a 1/4" TRS electronically balanced output that can be used either in balanced mode
(with a 1/4" TRS jack) or unbalanced (standard 1/4" jack). The levels will automatically
change to match the configuration. This output supplies a line level signal to the subwoofer
amplifier [pin 2 (and tip) positive].
12. LEFT AND RIGHT OUTPUTS:
The left and right outputs are electronically balanced, with the same configuration as the SUB
WOOFER OUTPUT [pin 2 (and tip) positive]. The XLR and 1/4" TRS phone jacks are directly
wired in parallel. They should not be used at the same time (on the same channel) since the
output balance would not necessarily be maintained, especially if balanced and unbalanced
connectors are used.
13. LEFT AND RIGHT INPUTS:
The XLR and 1/4" TRS phone jacks are directly wired in parallel. They should not be used at
the same time (on the same channel) since the output balance would not necessarily be
maintained, especially if balanced and unbalanced connectors are used [pin 2 (and tip)
positive].
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FREQUENCY RESPONSE:
PROCESS MODE: Program controlled
BYPASSED: <10 Hz to 40 kHz +0/-1 dB
THD + N (10 Hz – 80 kHz BW):
PROCESS MODE: ≤ .003%
BYPASSED: ≤ .002%
SIGNAL TO NOISE:
-101 dBu
CROSSTALK:
<-75 dB @ 1kHz
CMRR:
-60 dB
NOMINAL INPUT LEVEL:
0 dBu (775 VRMS)
MAX OUTPUT:
+22 dBu
MAX INPUT:
+22 dBu
INPUT IMPEDANCE:
20 k Ohms balanced
(Pin 2 positive), 10 k Ohms unbalanced
OUTPUT IMPEDANCE:
200 Ohms balanced
(Pin 2 positive), 100 Ohms unbalanced
POWER REQUIREMENTS:
8 Watts @ 120 VRMS 50/60 Hz
8 Watts @ 230 VRMS 50/60 Hz
DIMENSIONS:
19" W x 1.75" H x 9" D
483 mm x 44 mm x 229 mm
NET WEIGHT:
7.1 lbs. (3.22 kg)
SHIPPING WEIGHT:
8.7 lbs. (3.95 kg)
kosmos™Specifications
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LIVE APPLICATION: NON-POWERED MIXER
TWO CHS. OR STEREO CH.)
LINE IN
MAIN OUT R & L
OUT IN
LIVE APPLICATION: POWERED MIXER
POWER AMP IN R, L & SUB MIXER OUT R & L
MAIN (PWR AMP) OUT R & L
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MIX DOWN / MASTERING
MULTITRACK RECORDER (ADAT)
REC IN
L & R OUT
INPUTS (LINE IN)
CASSETTE DECK
INDIVIDUAL INSTRUMENT
PREAMP OUT
POWER AMP IN
"Y" ADAPTER
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