Acoustic Image Focus 1R Head

High quality acoutic amplifier with reverb.

System
• Frequency Response 20 Hz - 20 kHz, ±0.5 dB
• Distortion <0.5%, full output, <0.1%, typical
• Hum and Noise -85 dB or better
• AC Power 115V/60 Hz or 230V/50 Hz, switchable
• Size 10x9x2.5 inches (Clarus/Focus)
• Weight 4 lbs (Focus)
• Preamp (Mic and Instrument Channels-as appropriate to model)
• Mic Input 600 ohm balanced, XLR connector
• Phantom Power 38 volts, on/off switch
• Instrument Inputs Low impedance (1 MΩ),
• High Impedance (10 MΩ), separately buffered
• Direct Out +4 dB, balanced, XLR connector, ground lift
• Effects Loop Parallel type with return level control
• Bass Control Shelving type, ±15 dB at 60 Hz
• Mid Control ±15 dB at 650 Hz
• Treble Control Shelving type, ±15 dB at 10 kHz
• Brite Control ±15 dB at 9 kHz
• Notch Filter >-18 dB sweepable from 30 to 700 Hz
• High Pass Filter -12 dB/octave sweepable from 30 to 700 Hz
• Reverb (Clarus/Focus 1R/2R, Clarus SL·R only)
• Type Digital with 8 presets and level control
• Reverb Presets 2 Hall (Concert Hall, Arena), 3 Room (Club,
• Chamber, Garage), 2 Plate (Plate, Vocal) and
•1 Spring. Clarus SL-R has Concert Hall, Club,
and Spring only
• Power Amp (all models) Topology Class D (PWM) Switching Frequency 280 kHz, 200 kHz for Focus models Output Power >200 W @ 4Ω, >300 W @ 2Ω (Clarus) >250 W @ 4Ω, >350 W @ 2Ω (Clarus SL) >350 W @ 8Ω, >600 W @ 4Ω (Focus) Minimum Load 2Ω (Clarus and SL), 4Ω (Focus)
• Output Connectors Neutrik Speakon type (pole 1) Included Accessories Gig bag with shoulder strap, 6 foot Speakon to 1/4 inch cable

Notch/High Pass Filter

The notch/high pass filter is a fixed amplitude, variable frequency type that
inserts either an 18 dB cut or a 12 dB per octave rolloff at frequencies between
30 and 700 Hz , depending on the position of the control. The notch filter is used
to remove a given feedback frequency to reduce feeback “howl”. The high
pass filter is used to reduce the bass output in cases where room location or
instrument/pickup combination results in “boomy” sound. To use either, push
the on/off switch to turn on the filter circuit then select the filter type using the
notch/high pass switch. Start with the control fully counterclockwise and
gradually turn it clockwise until the desired effect is achieved, then experiment
with the position of the control to give you the sound you like best. The Clarus
SL’s do not have the filter capability.

Effects Loop
Acoustic Image preamps have output (“Send”) and input (“Return”) capability
in each channel to allow you to use effects boxes. The send output is affected
by the input volume and tone controls and can also be used as a preamp output
for driving other power amplifiers. The Return input can be used to directly
connect an external preamp to the unit’s power amp. The effects level control
in each channel controls the volume of the returned (“wet”) signal relative to
the original (“dry”) signal. Because the effects loop is a parallel type, plugging
something into the send output does not interrupt the signal path. So, a tuner
can be plugged into the send output without affecting the signal going through
the amp. When the effects loops are not used, the level controls should be set
at zero. The Clarus SL’s do not have the effects level control.

Direct Out
An XLR jack is provided for a Direct Out connection that allows the system’s
output to be fed to mixing boards of house PA systems or recording studios.
As a result, the instrument amplified by the unit can be recorded or further
amplified by the house PA system. In the two-channel amps, the Direct Out
signal is the combined output of the mic and instrument channels and it is
affected by the input level and tone controls of each channel (post EQ). Any
reverb signal selected is also present in the direct out signal.
A ground lift switch is available to “lift” the ground from the output of the direct
out--reducing noise should a ground loop create hum when the unit is
connected to a mixing board. The Clarus SL’s do not have the ground lift switch.
Reverb (Clarus/Focus 1R, Clarus/Focus 2R and Clarus SL·R only)
Our high-quality digital reverb units offer 8 program selections: 2 “Hall”
(Concert Hall and Arena), 3 “Room” (Club, Chamber and Garage), 2 “Plate”
reverb simulations (Plate and Vocal), and 1 “Spring” reverb simulation. The
Clarus SL·R offers 3 program selections, Concert Hall, Club and Spring.