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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 Acoustics amazing, cutting-edge technology has allowed us to overcome the usual design problems of coaxial systems while taking advantage of coaxials unique properties. Thanks to custom transducers and TQ algorithms designed by Fulcrums 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 S6 uses the same technology and design as the S8 but with a 6.5-inch low/mid-frequency driver. 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. 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 -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 royaltyand they look regal, too!
Any loudspeaker is subject to an assortment of environmental and performance problems, and Sceptre monitors offer protection from most common of these. RF shielding protects against radio frequencies that could be induced into the signal and become audible. (If youve ever heard a radio broadcast unexpectedly coming out of a guitar amp, thats the result of RF interference.)
Sceptre monitors also provide over-temperature protection to avoid heat-related issues and current-output limiting to prevent damage should there be a short circuit on the speaker terminals.
Finally, the power amplifiers have a soft startup so that you dont get damaging pops in the speakers when you power them up.
CoActual technology combines DSP time-correction and point-source design for symmetrical soundstage and micro-definition imagingUnique 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 AlignmentPowerful DSP provides critical Temporal Equalization™ with multiple FIR filtersAcoustic-tuning controls:
180W RMS, Class D biamplification with internal heat sinkRF shielding, current-output limiting, and over-temperature protectionBalanced XLR and ¼-inch TRS line-level inputs with A-taper level controlAmplifier “soft start” feature eliminates popping on power-up102 dB maximum continuous SPLInternal power supply with IEC connectorPower switch with on/off LED
- 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)