Overview:

The  Sceptre S8 Two-Way 8" CoActual Studio Monitor with DSP Temporal Equalization by PreSonus articulates nuances of your music that can't be reproduced by conventional designs. The Sceptre S8 features a panoramic soundstage and a wide dynamic range. The advanced coaxial design works integrally with a 32-bit/96 kHz, dual-core processor running Fulcrum Acoustic's TQ Temporal Equalization Technology.

• The Sceptre S8 features a 8" low/mid-frequency driver, a 1" horn-loaded tweeter and front-firing acoustic ports. The systems are biamplified, with each transducer powered by an independent 100W RMS, Class D power amplifier with an internal heat sink. Sceptre has an internal power supply and a blue power-indicator LED. The S8 studio monitor has a balanced XLR and a 1/4" TRS line-level input with an A-taper level control.
• Coaxial systems, such as the S8, have both drivers on the same axis— providing a single point source for a consistent acoustic center. This results in symmetry of response on both the horizontal and vertical axes, at any given angle. The crossover transition is, therefore, seamless at all angles.

Onboard TQ Temporal Equalization by Fulcrum Acoustics

• Each Sceptre monitor contains a 32-bit/96kHz, dual-core, active floating-point DSP chip that powers Fulcrum Acoustic's TQ algorithms. The TQ algorithms use fully addressable Finite Impulse Response (FIR) filters to eliminate horn reflections and to correct linear time and amplitude anomalies. Loudspeakers tuned with TQ provide a crisper stereo image, greater soundstage depth, more separation between the elements of a complex mix, increased resistance to feedback, more seamless transitions between distributed loudspeakers, and a less fatiguing listening experience.

Acoustic Space Control

• The Acoustic Space Control is a second-order shelving filter centered at 100Hz. It can remain flat or attenuate by 1.5dB, 3dB, or 6dB— reducing the boundary bass boost that occurs when the monitor is placed near a wall or corner.

Acoustic Tuning Controls

• The High-Frequency Driver Adjust switch can boost the tweeter by 1dB, or cut by 1.5dB or 4dB. The High-Pass switch rolls off the lows below a specified frequency, 60, 80, or 100Hz, at a slope of 12dB/octave. This control is important if you are using a subwoofer in conjunction with the Sceptre.

Input Sensitivity Control

• A sensitivity control ranging from +4dBu to -10dBV helps you match the Sceptre to your mixer's outputs.

Thorough Protection Circuitry

• RF shielding protects against radio frequencies that could be introduced to the signal and become audible. Sceptre monitors also provide overheat protection, current-output limiting and subsonic protection. "Soft startup" amplifiers prevent damaging pops from sounding through the speakers when you power them up.

Features:

CoActual technology

• Combines DSP time-correction and point-source design for symmetrical sound stage 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 ¼-inch TRS line-level inputs with A-taper level control

Rear Panel Connections:

Input

• Line-level Inputs. The Sceptre S8 provides a choice of two balanced inputs: XLR and ¼” TRS. These inputs accept a line-level signal from your audio source and feed that signal to the monitor’s built-in power amplifiers. When both balanced connections are in use, the TRS input supersedes the XLR input.
• Input Level: Sets the amount of gain applied to the input signal. This is not a volume control in the traditional sense; instead, it sets the level of the input signal before it is amplified

Acoustic Tuning Controls

• Acoustic Space: Cuts the level of all frequencies below 250 Hz by the specified amount (-1.5, -3, or -6 dB) to compensate for the bass boost that occurs when the monitor is placed near a wall or corner. Can be defeated by setting it to Linear. Repeatedly pushing the corresponding button cycles through the available settings.
• HF Driver: Boosts or cuts all frequencies above 2 kHz by the specified amount (+1, -1.5, or -4 dB). Can be defeated by setting it to Linear. Repeatedly pushing the corresponding button cycles through the available settings.
• HP Filter: Rolls off the level of all frequencies below the specified frequency (60, 80, or 100 Hz), with a slope of -24 dB/octave. Can be defeated by setting it to Linear, in which case, the monitor’s natural roll off takes over (42 Hz for S6, 38 Hz for S8). Repeatedly pushing the corresponding button  cycles through the available settings.

Power

• IEC Power Connection: Your Sceptre S8 accepts a standard IEC power cord
• Power Switch: This is the On/Off switch. The power status is indicated by an LED on the front of the cabinet

Monitor Placement:

 

Specifications:

Inputs:

• 1 -Balanced XLR
• 1-Balanced 1/4" TRS

Performances:

• Frequency Response (-3 dB) : 46 Hz - 20 kHz
• Frequency Response (-10 dB) : 38 Hz - 23 kHz
• Crossover Frequency : 2.4 kHz
• LF Amplifier Power (@ 4Ω) : 90W    
• HF Amplifier Power (@ 4Ω) : 90W    
• Peak SPL (@ 1 meter) : 116 dB
• LF Driver :  8” glass-reinforced paper
• HF Driver : 1” diaphragm compression driver
• Input Impedance : 10 kΩ        

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

Physical

• Width : 11.4” (290 mm)
• Depth: 13.3” (338 mm)
• Height : 15.75” (400 mm)
• Weight: 24.25 lbs (11 kg)