M-Audio Studiophile SBX User Manual

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Studiophile SBX

Users Manual

Your Your Studiophile SBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

First Things First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

In the Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Correct Power Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Positioning the Subwoofer in the Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Rear Panel Features: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Connecting the SBX and Your Main Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Using the SBX with Stereo Bass Management . . . . . . . . . . . . . . . . . . . . . . . . . .6

Using the SBX without Stereo Bass Management . . . . . . . . . . . . . . . . . . . . . . . .7

Connecting an Additional Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Setting the HPF Bypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Optimizing the Rear Panel Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Setting the Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Setting the Phase Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Setting the Subwoofer LPF and the Satellites HPF . . . . . . . . . . . . . . . . . . . . . . .10

Troubleshooting & Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Avoiding Problems with Turntables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Replacing the Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Technical Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

The SBX is a high-quality subwoofer designed to deliver extremely low

Your Studiop

ile SBX

 

 

 

frequ

ncies in conj nction with stereo pairs of studio reference monitors such

as the M-Audio

Studiophile BX8 or BX5. In fact, so many consumers have

subwoofers in their home and car entertainment systems that you’re not really

mixing accurately without having a sub yourself.

 

 

 

M-Audio’s engineers designed the SBX to meet professional q ality

performance standards and to provide superior value. Your SBX is constructed

using high-quality components such as the 8-inch mineral filled polypropylene

woofer cone. We use only selected grade components throughout the circuit

design, placing special emphasis on components within the audio path to

assure stable, consistent performance. We’ve built in a unique smooth-clipping

circuit to deliver

warm musical sound similar to a vacuum tube. This circuit

also provides overload protection for safe and high volume performance.

The SBX incorporates a unique Stereo Bass Management System. When

subwoofers are added to many systems, all frequencies are routed

both the

main monitors and the sub. The problem is that both the main monitors and

the sub are still trying to put out the same low frequencies, duplicating the

playback of some of the low frequencies and thereby compromising

monitoring accuracy.

 

 

 

Our Stereo Bass Management System solves that and delivers optimal fidelity.

The SBX’s internal crossover network splits the signal

at

user-defined

crossover frequency, routing everything below it to the

internal

sub and

everything above it to the main outputs. This significantly improves fidelity

because the sub and mains aren’t tripping over each other to reproduce the

same frequency—and each component only has to reproduce frequencies to

which it is ideally suited.

 

 

 

subwoofer on when it senses a program signal while turning it off to conserve

Your SBX also features auto-muting circuitry that automatically turns the

ower when no signal is present. Various controls also allow you to adjust

performance of the SBX in conjunction with the rest of your system. While the

this manual in order to derive optimal audio quality from your new

SBX

easy to operate, we sugg st that you take few minutes to read the rest

subwoofer. Enjoy!

 

 

 

2

InFirstorderThingsto avoidFirstrisk of damage and insure optimum performance from your SBX Subwoofer, please take time to read this manual before you proceed to unpack and install it.

InCarefullythe Boxremove the SBX from the carton, paying extra attention to avoid touching or damaging the speaker cone. If the system is damaged in any way or does not contain all parts, contact your dealer immediately. We recommend that you savethe the carton in the event that you need to transport or ship the product in future. Within the SBX package you should find:

SBX Subwoofer

Theis manual

One (1) standard AC Power cable

Correct Power Operati

 

Since the SBX contains its own amplifier, it must be connected to a power outlet

using the det chable AC cable provided. Before

power, please

panel is set to the appropriate position, as describedconnectingthe rear-panel features

make sure that the Voltage-Select Switch, located

the the speakers rear

list appearing earlier in this manual.

 

Note: - WARNING! - Use of improper voltage/ selector switch

combinations may result in hazardous conditions and/or damage to

speaker components not covered by speaker warranty.

Positi ning the Subwo fer in the Studio

 

In theory the best position for the SBX subwoofer is midway between

satellite speakers, with its front facing forward and in the same plane as the

onts of the satellite speakers. However, due to the fact that low bass

equencies are somewhat non-directional, you may locate the SBX quite far

from this position without any detrimental effect on the sound reproduction.

Each room is different in ac ustic properties, so please feel free to experiment

with placement. Different positions of the SBX

to walls will affect its

efficiency, as well as the room’s overall influencerelationthe frequency response. You can compensate for this by readjusting the filter settings (see section, “Setting the Subwoofer LPF and the Satellites HPF”).

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1.

Power Mode LED: This LED indicates the power status. If the

-muting

Rear Panel Features:

 

 

 

 

circuitry is engaged, this LED will be amber if there is no audio signalautothe SBX,

 

and green when the SBX 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 SBX. 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 de ignates the cutoff frequency of the

 

SBX using LPF, or low-pass filter. This

setting will determine

the highest

 

frequency that the SBX 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 SBX’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

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 SBX.

 

 

 

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 SBX’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

 

System.

 

0.

Power cable socket: This socketManagementaccepts 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 “O ” will power the SBX 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 (120VAC) 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 (120V) setting is correct

 

for the USA and the 230V setting correct for most of the UK and Europe.

 

 

 

 

 

 

 

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+ 11 hidden pages