PreSonus Sceptre S8

The coaxial conundrum.

Speaker designers have long been aware that coaxial designs offer the advantages of a single point source for a consistent acoustic center and a symmetrical dispersion pattern. But until now, designing coaxial systems without a variety of acoustic anomalies has been extremely expensive.

Solving the problems involved in coaxial designs requires massive amounts of DSP and subtle, sophisticated transducer design, which is why such systems have, in the past, been limited to very high-end systems with external processors.

However, Fulcrum Acoustic’s amazing, cutting-edge technology has allowed us to overcome the usual design problems of coaxial systems while taking advantage of coaxial’s unique properties. Thanks to custom transducers and TQ algorithms designed by Fulcrum’s Dave Gunness, Sceptre CoActual monitors deliver clarity and coherence that has previously only been available in ultra-high-end systems.

The royal Sceptre

The Sceptre series includes two models. The Sceptre S8 CoActual Studio Monitor combines an 8-inch low/mid-frequency driver and a 1-inch (25 mm), horn-loaded, high-frequency transducer into a single coaxial unit with aligned voice coils. The Sceptre S6 uses the same technology and design as the S8 but with a 6.5-inch low/mid-frequency driver. Both models have front-firing acoustic ports.

The systems are biamplified: Each transducer is powered by a 90W RMS, Class D power amp with an internal heat sink. Each Sceptre has its own internal power supply with IEC connector and a power switch with on/off LED.

All Sceptre-series monitors have a balanced XLR and ¼-inch TRS line-level inputs with A-taper level control.

To this package of custom transducers, powerful DSP running custom software, and first-rate power amplification, add a rich set of acoustic adjustments and full speaker protection, and you have a new, affordable close-field monitoring standard for project studios and commercial facilities.

As you expect from PreSonus, Sceptre studio monitors use top-quality components and construction quality fit for royalty-and they look regal, too!

Coaxial done right with TQ

Each Sceptre monitor contains a DSP chip that enables the use of Fulcrum Acoustic’s TQ algorithms. The processor is used to manage horn reflection, linear time and amplitude anomalies correction, performance contouring, and dynamic and excursion limiting.

The result is coaxial speakers that perform far better than all but the most expensive studio monitors.

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)
• 180W RMS, Class D biamplification with internal heat sink
• RF shielding, current-output limiting, and over-temperature protection
• Balanced XLR and ¼-inch TRS line-level inputs with A-taper level control
• Amplifier soft start feature eliminates popping on power-up
• 102 dB maximum continuous SPL
• Internal power supply with IEC connector
• Power switch with on/off LED