Rear Panel:
1. Power/Standby LED: This LED indicates the power status. If the auto-muting
circuitry is engaged, this LED will be amber if there is no audio signal to the
SP-8S, and green when the SP-8S receives a signal. If “Auto-Power” is
switched off, then this LED will remain green.
2. “Level” control knob: This knob controls the amplifier level of the SP-8S. The
gain range is from minimum to maximum, labeled “Min” and “Max,” with
Min being full attenuation and Max being full volume.
3. Phase control knob: This knob controls phase of the crossover frequencies of
the Subwoofer and the Satellites from 0 to 180 degrees.
4. “Subwoofer” LPF control knob: This knob designates the cutoff frequency of
the SP-8S using a LPF, or low-pass filter. This setting will determine the
highest frequency that the SP-8S will reproduce.
5. “Satellites” HPF control knob: This knob determines the HPF, or high-pass
filter cutoff frequency for the Satellite speakers while using the SP-8S’s Stereo
Bass Management System. The Satellites control knob is functional only when
the HPF Bypass switch is set to Off.
6. Input section: This section provides two balanced XLR inputs and two 1/4”
TRS connectors that may be used for balanced (TRS) or unbalanced (TS)
operation. Either XLR or TRS may be used as your audio input. These inputs
are designated as “L” and “R” for operation in bass management mode. When
bass management is not used, either the L or R input may be used to input
signal to the SP-8S.
7. Auto Power On/Off Switch: When this switch is set to “On,” Auto Power
mode is engaged. Switching to “Off” will defeat Auto Power mode.
8. HPF Bypass switch: Switching HPF Bypass to “On” will bypass the Satellites
HPF control knob, effectively defeating the SP-8S’s Stereo Bass Management
System. With HPF Bypass switched off, the “Satellites” HPF cutoff frequency
control knob is engaged and bass management is operational.
9. Output section: This section provides three balanced XLR outputs labeled
“Extra Sub” and “L” & “R.” The Extra Sub output gives you throughput
directly from the inputs for the purpose of connecting an additional
subwoofer. The L and R outputs are to be used for connecting Satellite speakers
(your left and right mains) when using the Bass Management System.
10. Power cable socket: This socket accepts a standard grounded AC cable.
11. Fuse holder: This fuse holder allows the replacement of a fuse for the purpose
of circuit protection.
12. Power On/Off switch: Switching to “On” will power the SP-8S subwoofer.
Switching to “Off” will power the unit down.
13. Manufacturer’s Label: This section gives the model number and manufacturer
information, including important power requirement information. See
section, “Correct Power Operation.”
14. Voltage-Select Switch: Provides 2 selections - 115VAC and 230VAC, and
should be set to match the “house current” (receptacle) voltage of the
country/location in which the speaker is used. The 115V setting is correct for
the USA andthe 230V setting correct for most of the UK and Europe.
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Summary of Contents for Studiophile SP-8S
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