background image

Note:

Before making any connections, make sure that the subwoofer and

amplifier are switched "OFF".

The Mezzo 9 can be used in two basic configurations: 

1. With an amplifier without a dedicated filtered Subwoofer output.

2. With an amplifier (such as a home cinema receiver) which does have a

dedicated filtered Subwoofer output.

In fact if required it is possible to make both connections at the same time
and switch between them (see details later).

Amplifiers without a dedicated Subwoofer output:

For this configuration there are two options, either you can connect the
Mezzo 9 to the amplifiers preamp output or its speaker outputs (the
Mezzo 9 uses whichever you choose automatically). In both cases the
Mezzo 9 then performs the required low-pass filtering and summing to
mono internally to create a subwoofer channel. See below:

Option 1

Option 2

A high quality stereo phono/RCA cable is the preferred connection type,
use the high-level connection option below only if your amplifier does not
feature pre-amp outputs.

In this case, use speaker cable or other wire. The Mezzo 9 presents a high
input impedance to the amplifier and is wired in parallel with the main
speakers. The Mezzo 9 will not draw any significant current from the
amplifier and so a large gauge speaker cable is not required, small gauge
cable can be used, and as the amplifiers output impedance will normally
be very low screened cable is not required.

7. Connections

HI

G

H

 LEVEL IN

LEFT

RI

G

HT

2-channel connections

Pre-amp output

HI

G

H

 LEVEL IN

LEFT

RI

G

HT

High Level In

Amplifier

Loudspeaker

Loudspeaker

6. Bottom panel

Line In L/R

Phono/RCA cables can be connected here from an amplifiers line level
Preamp / Subwoofer output.

Line Out L/R

Phono/RCA cables can be connected here to loop the Line In signal
onwards to another Subwoofer.

LFE (Low Frequency Effects)

In

- Single phono cable can be connected here from a home cinema

receiver’s LFE/Subwoofer output.

Out

- Single phono cable can be connected here to loop the LFE In signal

onwards to another Subwoofer.

Trigger

In

- Single cable can be connected here from a device that has a Trigger

output. A 5-12V DC trigger input will wake the Subwoofer up from
Standby.

Out

- Single cable can be connected here to loop the Trigger In signal to

another device.

1

2

3

4

High Level Input L/R

Speaker cable or other wire can be connected here from an amplifiers high
level loudspeaker terminals. The Mezzo 9 presents a high input impedance
to the amplifier and can be wired in parallel with the main speakers. 
The Mezzo 9 will no draw any significant current from the amplifier and so
a large gauge speaker cable is not required.

Mains Voltage Selector Switch

Switches the mains voltage between 115V and 230V. For use by installer/
dealer only.

Power On/Off

Switches the subwoofer on and off.

AC power socket

Once you have completed all the connections to the subwoofer, plug the
AC power cable into an appropriate mains socket then switch on. Your
subwoofer is now ready for use.

5

6

7

8

HI

G

H

 LEVEL IN

LEFT

RI

G

HT

115V: 6.3AL 250V
230V: 3.15AL 250V

ATTENTION

AFIN D'ASSURER
UNE PRETECTION
PERMANENTE CONTRE
LES RISQUES 
D'INCENDIE,
REMPLACE-
RUNIQUEMENT
PAR UN FUSIBLE 
DE INDIQUÉ

CAUTION

FOR CONTINUED

PROTECTION
AGAINST FIRE

HAZARD, REPLACE

ONLY WITH

SPECIFIED FUSE

OFF

ON

POWER AC

230V

115V

Designed in London, England

Caution:

S

erial Number Label Removed

Max power con

s

umption: 600W

Active Subwoofer

Caution

Ri

sk

 of electric 

s

hoc

k

Do not open.

Avis

Ri

sq

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ue.  

Ne pa

s

 ouvrir.

Achtung

Vorm öffnen de

s

 geräte

s

Netz

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tec

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er ziehen.

N2409

46

Main

s

 Voltage

S

elector 

S

witch

115V/230V

AC ~ 50/60Hz 

6/3A

Thi

s

 device complie

s

 with part 15 of the FCC Rule

s

.  Operation i

s

 

s

ubject to the following 

two condition

s

: (1) Thi

s

 device may not cau

s

e harmful interference, and (2) thi

s

 device mu

s

accept any interference, including interference that may cau

s

e unde

s

ired operation.

www.mordaunt-short.com

HI

G

H

 LEVEL IN

LEFT

RI

G

HT

115V: 6.3AL 250V
230V: 3.15AL 250V

ATTENTION

AFIN D'ASSURER
UNE PRETECTION
PERMANENTE CONTRE
LES RISQUES 
D'INCENDIE,
REMPLACE-
RUNIQUEMENT
PAR UN FUSIBLE 
DE INDIQUÉ

CAUTION

FOR CONTINUED

PROTECTION

AGAINST FIRE

HAZARD, REPLACE

ONLY WITH

SPECIFIED FUSE

OFF

ON

POWER AC

230V

115V

Caution:
ber Label Removed

Caution

Ri

sk

 of electric 

s

hoc

k

Do not open.

Avis

Ri

sq

ue de choc electri

q

ue.  

Ne pa

s

 ouvrir.

Achtung

Vorm öffnen de

s

 geräte

s

Netz

s

tec

k

er ziehen.

N2409

46

Main

s

 Voltage

S

elector 

S

witch

115V/230V

AC ~ 50/60Hz 

6/3A

Thi

s

 device complie

s

 with part 15 of the FCC Rule

s

.  Operation i

s

 

s

ubject to the following 

two condition

s

: (1) Thi

s

 device may not cau

s

e harmful interference, and (2) thi

s

 device mu

s

accept any interference, including interference that may cau

s

e unde

s

ired operation.

1

2

3

4

5

6

7

8

6

Summary of Contents for MEZZO 9

Page 1: ...Installation Guide Installationsanleitung Guide d installation Guía de Instalación Guida all installazione Installatiehandleiding Installationsguide Руководство по установке ...

Page 2: ...et up procedure 11 SPL measurement graph 13 Contents For additional help with installation visit Weitere Hinweise zur Installation finden Sie unter Pour de l aide supplémentaire concernant l installation visitez le site Para obtener ayuda adicional sobre la instalación visite Per ulteriori consigli a proposito dell installazione visitate il sito Hvis du har brug for mere hjælp til installationen k...

Page 3: ...ws either enhancement of dynamics for a more punchy movie experience or compression downward expansion for late night use A high efficiency 375 watt amplifier coupled to two 8 CPC bass drivers allow the Mezzo 9 to recreate the bass depth required for both realistic Music and Movie performances Separate presets may used to allowing you to quickly recall your own settings optimised for different lis...

Page 4: ...al set ups in 5 1 6 1 and 7 1 surround sound configurations Your subwoofer can be placed almost anywhere in the room as bass is much less directional than higher frequency sound However due to the acoustic effects of the room experimentation is always recommended In particular before setting adjustments for room anomalies such as the Notch Filters try to achieve the best performance by changing th...

Page 5: ...our connected receiver amplifier rather than or the subwoofer itself this reduces the level at the subwoofer input rather than the output level 4 Top panel controls 1 1 2 3 4 5 6 7 2 3 4 5 Display Notch Boost filter 1 and 2 active Numeric display for volume etc Text display Refer to later sections of this manual for more information about these adjustments and functions 1 2 3 3 1 5 4 2 6 Power Lig...

Page 6: ...nother device 1 2 3 4 High Level Input L R Speaker cable or other wire can be connected here from an amplifiers high level loudspeaker terminals The Mezzo 9 presents a high input impedance to the amplifier and can be wired in parallel with the main speakers The Mezzo 9 will no draw any significant current from the amplifier and so a large gauge speaker cable is not required Mains Voltage Selector ...

Page 7: ...el In connect another set of cables from the Left and Right High Level Inputs of the Mezzo 9 to the Left and Right High Level Inputs of the next subwoofer Alternatively connect another set of cables from the amplifier outputs to the Left and Right High Level Inputs of the next subwoofer In either case the subwoofer inputs are simply in parallel to each other and in parallel to the main speakers or...

Page 8: ...les to the next one Back To go back to a previous item or functions This action is represented by the symbol The Remote Control SPL Meter supplied with the Mezzo 9 is included to aid the set up and in particular the setting of the Notch Boost Filters if required It may also be used to correctly set up satellite speaker levels when used in conjunction with an AV receiver SPL Press to activate SPL m...

Page 9: ...vel speaker inputs LFE Select for LFE channel only LFE LINE HILVL Selects both inputs at the same time you will now need to control which one you are using by turning on off the two source components Low pass The Low pass filter is the filter that removes all of the high frequencies from the signal before it reaches the amplifier When this filter is set correctly the subwoofer will blend in with t...

Page 10: ...ajor effect Traditionally subwoofers have used a phase invert or polarity switch to help achieve better integration We have taken this concept a step further with our Phase Compensation Filter This filter allows the user to increase the phase offset continuously in degrees until the optimal integration has been achieved The unit degrees refers to the number of degrees the phase of the subwoofer re...

Page 11: ...g from 30Hz to 100Hz and create a frequency response graph The 17th track is a special test tone for setting up the phase filter Also on the CD is a PC application that helps you set the Notch Boos Filter The CD is used with the Acoustic setup procedure See later section How It Works Notch Boost A typical subwoofer response in a room may look something like Figure 1 below As you can see in this ex...

Page 12: ... up CD or by visually inspecting the graph To use the CD simply load it into your computer and follow the on screen instructions To set up the notch filter by hand a Find the track with the highest reading and set the notch filter frequency to this value b Set the depth to the value that best cancels the peak c Set the width to the narrowest setting 1 d Repeat step 5 e If peaks are measured on eit...

Page 13: ...lter for the best overall sound 13 13 SPL measurement graph Use Your Ears Following the setup procedure is only the first step in getting the most out of your Mezzo 9 subwoofer Listen to some well known source material Use the compare button on the remote control to listen to the sub with and without the filters in place Note Don t forget to save your settings in a preset once you are finished so ...

Page 14: ... 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Level relative dB SPL Frequency Hz CD Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Track 8 Track 9 Track 10 Track 11 Track 12 Track 13 Track 14 Track 15 Track 16 30 32 34 36 38 41 44 48 53 58 64 71 80 89 101 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Level relative dB SPL Frequency Hz CD Track 2 Track 3 Track 4...

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