PreSonus Sceptre CoActual™ series studio reference monitors feature an advanced coaxial design that works integrally with a 32-bit, 96 kHz, dual-core processor that uses Fulcrum Acoustic's TQ™ Temporal Equalization technology. 

Spectre CoActual monitors deliver clarity and coherence that has previously only been available in ultra-high-end systems. Yet they are an affordable investment for project-studio owners—a first for DSP-controlled, TQ-based systems.

The Sceptre S8 CoActual Studio Monitor features combines an 8-inch low/mid-frequency driver and a 1.73-inch (44 mm), horn-loaded, high-frequency transducer into a single coaxial unit with aligned voice coils.  Both the S6 and the S8 have acoustic ports.

Sceptre monitors include controls that enable full integration into any studio environment.  A four-position Acoustic Space switch controls a second-order shelving filter center at 100 Hz, with four attenuation settings (no attenuation, -1.5 dB, -3 dB, and -6 dB) so that you can account for the bass response relative to room dimensions and speaker placement. 

A High Pass switch sets the second-order slope, 12 dB/octave filter’s low-frequency cutoff to linear, 60 Hz, 80 Hz, or 100 Hz.  A High-Frequency Driver Adjust switch adjusts the tweeter's overall level to linear (0 dB), +1 dB, -1.5 dB, or -4 dB.  The Sensitivity control ranges from +4 dBu to -10 dBV.

The systems are biamplified: Each transducer is powered by a 90W RMS, Class D power amp with an internal heat sink.  All Sceptre-series monitors have a balanced XLR and 1/4" TRS line-level inputs with A-taper level control.

All Sceptre-series monitors offer RF shielding, current-output limiting, and over-temperature protection and have internal power supplies with IEC connectors and power switches with on/off LEDs.  An amplifier "soft start" feature eliminates popping on power-up.

PreSonus Sceptre S8 Features

• CoActual technology:
• Combines DSP time-correction and point-source design for symmetrical soundstage and micro-definition imaging
• Unique coaxial transducer integrates 8-inch (Sceptre S8) or 6.5-inch (Sceptre S6) midrange driver and 1-inch (25 mm), horn-loaded HF transducer with Coaxial Speaker Coherence Alignment
• Powerful DSP provides critical Temporal Equalization™ with multiple FIR filters
• Acoustic-tuning controls:
• HF Driver Adjust (0 dB, +1 dB, -1.5 dB, -4 dB)
• Acoustic Space settings (0 dB, -1.5 dB, -3 dB, -6 dB)
• High-pass filter (Off, 60 Hz, 80 Hz, and 100 Hz, -24 dB/octave slope)
• Sensitivity (+4 dBu to -10 dBV)
• Power and safety:
• 180W RMS, Class D biamplification with internal heat sink
• 102 dB maximum continuous SPL
• RF shielding, current-output limiting, and over-temperature protection
• Amplifier “soft start” feature eliminates popping on power-up
• Internal power supply with IEC connector
• Power switch with on/off LED
• Inputs and outputs: Balanced XLR and 1/4" TRS line-level inputs with A-taper level control

PreSonus Sceptre S8 Specifications

• Inputs: 1x balanced XLR, 1x balanced 1/4" TRS
• Performance:
• Frequency Response (-3 dB): 46 Hz - 20 kHz
• Frequency Response (-10 dB): 38 Hz - 23 kHz
• Crossover Frequency: 2.4 kHz
• LF Amplifier Power (@ 4 Ohms): 90W
• HF Amplifier Power (@ 4 Ohms): 90W
• Peak SPL (@ 1 meter): 116 dB
• LF Driver: 8" glass-reinforced paper
• HF Driver: 1" diaphragm compression driver
• Input Impedance 10 kOhm
• User Controls:
• Volume Range:  A-type taper
• HF Control: Flat, +1, -1.5, -4 dB 
• Low Cut: Flat, 60, 80 Hz, 100 Hz
• Acoustic Space: Flat, -1.5, -3, -6 dB
• Protection:
• RF interference
• Over-current
• Over-voltage
• Over-temperature
• Turn-on/off transient
• Subsonic filter
• External mains fuse
• Power: 100-120V ~50/60 Hz or 220-240V ~50/60 Hz
• Cabinet: Vinyl-laminated, medium-density fiberboard
• Dimensions: 11.4" W x 13.3" D x 15.75" H (290 x 338 x 400 mm)
• Weight: 24.25 lbs (11 kg)