powersoft Mezzo Series User manual

Keep this manual
for future reference

USER GUIDE
Mezzo 602, Mezzo 604 A/AD
Mezzo 322, Mezzo 324 A/AD
Mezzo Series
DO000257.00 R01
STATUS
NETWORK
SIGNAL
MEZZO
STATUS
NETWORK
SIGNAL
MEZZO

2 | MEZZO Series
 CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
This unit has been engineered and manufactured to ensure your personal safety.
But IMPROPER USE CAN RESULT IN POTENTIAL ELECTRICAL SHOCK OR FIRE HAZARD.
In order not to defeat the safeguards incorporated into this product, observe the

Safeguards” carefully before use.
• 
• 
• Heed all warnings.
• 
• Do not use this equipment near water.
• Clean only with a dry cloth.
•           

• Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding-
type plug has two blades and a third grounding prong. The wide blade or the
             
into your outlet, consult an electrician for replacement of the obsolete outlet.
• 
convenience receptacles, and the point where they exit from the apparatus.
• 
•             


• Unplug this apparatus during lightning storms or when unused for

•         
required when the apparatus has been damaged in any way, such

have fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
• 

• Where the MAINS plug or an appropriate coupler is used as the disconnect
device, the disconnect device shall remain readily operable.
CLASS3
WIRING
THE TRIANGLE WITH THE LIGHTNING BOLT IS USED TO ALERT THE USER TO THE RISK
OF ELECTRIC SHOCK.
CLASS3
WIRING
THE TRIANGLE WITH THE EXCLAMATION POINT IS USED TO ALERT THE USER TO
IMPORTANT OPERATING OR MAINTENANCE INSTRUCTIONS.
THE CE-MARK INDICATES THE COMPLIANCE OF THE PRODUCT TO ALL THE APPLICABLE
EUROPEAN DIRECTIVES
SYMBOL FOR EARTH/GROUND CONNECTION.
SYMBOL INDICATING THAT THE EQUIPMENT IS FOR INDOOR USE ONLY.
SYMBOL FOR CONFORMITY WITH DIRECTIVE 2012/19/EC OF THE EUROPEAN
PARLIAMENT ON WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE).
+45 C
-10 C
-10°C TO +45°C
10%
90%
%10% TO 90% HUMIDITY (NON CONDENSING). DERATING ABOVE 35°C.
DO NOT USE THE UNIT AT ALTITUDES ABOVE 2000 M.
DO NOT USE THE UNIT IN TROPICAL ENVIRONMENT.
CLASS3
WIRING
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT ATTEMPT TO OPEN
ANY PART OF THE UNIT. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
CLASS3
WIRING
CONNECTION TO THE MAINS SHALL BE DONE ONLY BY A ELECTROTECHNICAL SKILLED
PERSON ACCORDING THE NATIONAL REQUIREMENTS OF THE COUNTRIES WHERE THE
UNIT IS SOLD.
CLASS3
WIRING
DO NOT USE THIS AMPLIFIER IF THE ELECTRICAL POWER CORD IS FRAYED OR BROKEN.
CLASS3
WIRING
TO AVOID ELECTRICAL SHOCK, DO NOT TOUCH ANY EXPOSED SPEAKER WIRING WHILE
THE AMPLIFIER IS OPERATING.
CLASS3
WIRING
DO NOT SPILL WATER OR OTHER LIQUIDS INTO OR ON THE AMPLIFIER.
CLASS3
WIRING
NO NAKED FLAME SOURCES SUCH AS LIGHTED CANDLES SHOULD BE PLACED ON THE
AMPLIFIER.
CLASS3
WIRING
WARNING TO PREVENT INJURY, THIS APPARATUS MUST BE SECURELY ATTACHED TO THE
FLOOR/WALL IN ACCORDANCE WITH THE INSTALLATION INSTRUCTIONS.
CLASS3
WIRING
THIS DEVICE MUST BE POWERED EXCLUSIVELY BY EARTH CONNECTED MAINS SOCKETS
IN ELECTRICAL NETWORKS COMPLIANT TO THE IEC 364 OR SIMILAR RULES
CLASS3
WIRING
DISCONNECT THE AC MAINS SOURCE BEFORE ATTEMPTING TO CLEAN ANY PART OF THE
AMPLIFIER
CLASS3
WIRING
THE BREAKER NEEDS TO SUPPORT 375 VA PER MEZZO, SO MAX 3 MEZZO PER OUTLET
AT 115V 10A, OR MAX 6 MEZZO PER OUTLET WITH 230V 10A
CLASS3
WIRING
IT IS HIGHLY RECOMMENDED TO UNPLUG THE OUTPUT CONNECTORS BEFORE
PROCEEDING WITH THE SELF CHECK PROCEDURE
CLASS3
WIRING
THE TESTING SIGNALS MIGHT CAUSE LOUDSPEAKER IMPAIRMENTS.
CLASS2
WIRING
OUTPUT TERMINALS ARE HAZARDOUS: WIRING CONNECTION TO THESE TERMINALS
REQUIRES INSTALLATION BY AN INSTRUCTED PERSON AND THE USE OF READY MADE
LEADS.
CLASS3
WIRING
PROPERLY FIT THE AC MAINS PLUG TO THE AMPLIFIER INLET.
BEFORE POWERING THIS AMPLIFIER, VERIFY THAT THE CORRECT VOLTAGE RATING IS
BEING USED.
CLASS3
WIRING
VERIFY THAT YOUR MAINS CONNECTION IS CAPABLE OF SATISFYING THE POWER
RATINGS OF THE DEVICE.
CLASS3
WIRING
TAKE CARE TO LOCK THE OUTPUT TERMINAL BEFORE SWITCHING THE DEVICE ON.
THE MANUFACTURER CANNOT BE HELD RESPONSIBLE FOR
DAMAGES CAUSED TO PERSONS, THINGS OR DATA DUE TO AN
IMPROPER OR MISSING GROUND CONNECTION.
CONTACT THE AUTHORIZED SERVICE CENTER FOR ORDINARY AND
EXTRAORDINARY MAINTENANCE.
IT IS ABSOLUTELY NECESSARY TO VERIFY THESE FUNDAMENTAL
REQUIREMENTS OF SAFETY AND, IN CASE OF DOUBT, REQUIRE AN
ACCURATE CHECK BY QUALIFIED PERSONNEL.
EN

MEZZO Series | 3


component.
This symbol indicates that when the end-user wishes to

       
product from other household-type waste, the volume

and natural resources will thus be conserved.

aims to minimise the impact of electrical and electronic goods on the
        

and recovery of electronic equipment (WEEE) in order to reduce the

All of our products are marked with the WEEE symbol; this indicates
that this product must NOT be disposed of with other waste. Instead it is
the user’s responsibility to dispose of their waste electrical and electronic
equipment by handing it over to an approved reprocessor, or by returning


S.p.A. or one of your local distributors.

Manufacturer:


50018 Scandicci (Fi)
Italy
We declare that under our sole responsibility the products:
Model Names:
MEZZO 322 A
MEZZO 324 A
MEZZO 602 A
MEZZO 604 A
MEZZO 322 AD
MEZZO 324 AD
MEZZO 602 AD
MEZZO 604 AD

Are in conformity with the provisions of the following EC


 
 
 
The following harmonized standards are applied:
EN 55032: 2012
EN 55035: 2017
EN 60065: 2014 /AC: 2016
Scandicci,
September 2019
Luca Lastrucci
Managing Director




cover.





2
EN

4 | MEZZO Series
EN


       

On a shelf 

Custom mount
         

way to avoid mistakes is to use the provided screws.
Cooling
The 600W models implement a temperature controlled forced-air
cooling system. Air enters from the front and exists at the back of the

           



REGULATED - Mezzo adapts the speed of the fan to stay cool. The fan



Package list
The box contains the following:

Block connectors
2 Bracket A
2 Bracket B

Mains power cable
1 L-shaped T8 key
1 plug retain bracket
1 wall mount template sheet

Surface mount          


Surface mount (hidden brackets)
          
hiding the brackets underneath Mezzo.
Use the drilling template (included in the box) to mount at least 2
     
slide it onto the wall screws.
Single half rack mount 

Unscrew the indicated screws (2 on each side) without removing
them completely, set 2 "Bracket A" (one on each side) in place
          

Tandem 19” rack mount

A” in 1 RU in a 19” rack.



Flip both mezzo upside down, remove the pictured screws from



Apply 2 "Bracket A" by removing the screws on each side, matching


Single 19” rack mount         

A
A
B
B
B
B
A
A
A
4 mm
B
4 mm
4 mm

MEZZO Series | 5
EN
Power State


  
can be setup in two ways.
• 
•          


           

mode if no signal is present for 25 minutes.


Step 3 - Select the Ethernet mode of operaon (AD models)

              
frequency response that can be monitored and, if it is an AD model, get

           
maximum capacity of the power supply, with a 4 dBu balanced analog

            


           
selected so that frequencies below the resonance frequency, as well
as frequencies that saturate transformers in Hi-Z loudspeakers, will be

Note! Automac conguraon is only possible, and repeatable, when
no amplier sengs and parameters have been manually altered. In
the case of manual changes, it will sll be possible to trigger the auto
conguraon, but for vericaon and monitoring purposes only. The
new measured values will not be saved unl sengs and parameters
are set back to their inial values or a factory reset is done. In order to
restore Mezzo's factory default mode, start by unplugging the mains
cable. Press and hold the push buon on the amplier's rear panel and
reconnect the mains cable while sll pressing the buon. Wait for the
amplier state LEDs to blink in red for three mes and release.
No channel will ever be assigned limiters that exceed the power of the

to ensure that 25/70/100V loudspeakers will get the power selected
on their tapping, if a channel is using less power than it can deliver.

get set too high if the connected load isn’t requiring full power. The
maximum voltage can be selected with short presses on the push
          
displayed as follows:
Please note that for low-impedance loads, it is not necessary to select
the maximum voltage.



• Unlit: The internal Ethernet switch is disabled => the two ports
are not connected and the right port is then internally assigned


          
switch is enabled => the two ports are connected and will both

DSP. It means that only one Ethernet cable is necessary for control
and digital audio. It also means that the product can be inserted in
a daisy chain of other Gigabit Ethernet products as long as there is
enough bandwidth.
Step 4 - Roung and control via GPI
I/O Roung - 4-Channel models
       

and unbalanced inputs. When using unbalanced inputs only, these
will get a 12dB boost so that normal unbalanced sources will deliver



I/O Roung - 2-Channel models
All 2-channel models have mixed two unbalanced inputs (labelled
1 and 2) and two balanced inputs (labelled 3 and 4), meaning that
balanced and unbalanced sources can be used.
I/O Roung - Dante/AES67 (AD models)
    

by default, with Dante/AES67 inputs having a higher priority over the
corresponding analogue inputs when audio signal is coming from


VCA Operaon via GPIs


           

In 2-channel models, the output levels of channels 1 and 2 can be

Step 1 - Select the maximum voltage
70V
LED
100V
LED
Max Peak
Voltage
Max RMS
Voltage 
Unlit Lit 141.4 Vpeak 100 Vrms Also works in mixed 100V and low impedance

Lit Unlit 100 Vpeak 70.7 Vrms
Also works in mixed 70V and low impedance

Lit Lit 35.4 Vpeak 25 Vrms
Also works in mixed 70V and low impedance

Unlit Unlit 
This can’t be selected from the rear panel. The

and can’t be changed without a factory reset
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1 OUT4 3
MEZZO 602 AD
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1
ETH
OUT4 3
RESET
MEZZO 322 A
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
RESET
ETH
MEZZO 324 A
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
MEZZO 604 AD
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1 OUT4 3
MEZZO 602 AD
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1
ETH
OUT4 3
RESET
MEZZO 322 A
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
RESET
ETH
MEZZO 324 A
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
MEZZO 604 AD
Step 2 – Calibrate
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1 OUT4 3
MEZZO 602 AD
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
MAINS
2 1
2 IN 1
ETH
OUT4 3
RESET
MEZZO 322 A
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
RESET
ETH
MEZZO 324 A
STATUS
NETWORK
SIGNAL
SWITCHED
70V
100V
25V
CAL
6s
3s
CTRL +CTRL +
CTRL
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
MAINS
4 3 2 1
2 IN 1
MEZZO 604 AD
           

measurement for each channel. This will be made at a level that is high
enough to properly measure an 8 ohm loudspeaker. If the impedance
is higher, the measurement might be deemed to be too noisy and will
 


for monitoring changes. It will also set the limiters so that the channel


LED Charts
LED Color  
Status
Green Solid ON 
Blue Low Intensity In standby
Red Solid ON Hardware fault
Yellow Solid ON Temperature warning
Network Green Solid ON 
Blue Solid ON Connected to remote control
Signal
Green Solid ON Analogue input signal present
Yellow Solid ON 
Blue Solid ON Dante input signal present
Cyan Solid ON Both analogue and Dante input signals present
Switched Green Solid ON 
OFF -
Status
Network
Signal
All Cyan All Blinking 
General
LED Color  
70V
100V
Green
OFF
Solid ON
-70V Selected
70V
100V
OFF
Green
-
Solid ON 100V Selected
70V
100V
Green
Green
Solid ON
Solid ON 25V Selected

LED Color  
Status
Network
Signal
OFF
OFF
Purple
-
-
Solid ON


Status
Network
Signal
OFF
Cyan
OFF
-
Solid ON
-



STATUS
NETWORK
SIGNAL
MEZZO
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
2 1
2 IN 1 OUT4 3
SWITCHED
CTRL +CTRL +
CTRL
SWITCHED
CTRL +CTRL +
CTRL
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
4 3 2 1
2 IN 1
MEZZO
324 AD CLASS2
WIRING
MEZZO
324 AD CLASS2
WIRING

Rear Panels
Output
2CH2 - CH1 Outputs
5CH4 - CH3 Line Level Balanced Outputs
Input
3CH4 - CH3 Balanced Inputs
4CH2 - CH1 Unbalanced Inputs
GPIO Terminals
6
Network Connectors
91 X RJ45 Fast Ethernet connector (Mezzo A Version)
10 2 X RJ45 Fast Ethernet connector (Mezzo AD Version)
Control & Monitoring
7
8
AC Mains Connector
1IEC 10A
2 Channel Versions
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
2 1
2 IN 1 OUT4 3
SWITCHED
CTRL +CTRL +
CTRL
SWITCHED
CTRL +CTRL +
CTRL
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
4 3 2 1
2 IN 1
MEZZO
324 AD CLASS2
WIRING
MEZZO
324 AD CLASS2
WIRING
1
2
7
5 6
10
34
8
9
Output
2CH4 - CH3 Outputs
3CH2 - CH1 Outputs
Input
4CH4 - CH3 Balanced Inputs
5CH2 - CH1 Unbalanced Inputs
6CH2 - CH1 Balanced Inputs
GPIO Terminals
7
Network Connectors
10 1 X RJ45 Fast Ethernet connector (Mezzo A Version)
11 2 X RJ45 Fast Ethernet connector (Mezzo AD Version)
Control & Monitoring
8
9
AC Mains Connector
1IEC 10A
4 Channel Versions
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
2 1
2 IN 1 OUT4 3
SWITCHED
CTRL +CTRL +
CTRL
SWITCHED
CTRL +CTRL +
CTRL
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
4 3 2 1
2 IN 1
MEZZO
324 AD CLASS2
WIRING
MEZZO
324 AD CLASS2
WIRING
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
2 1
2 IN 1 OUT4 3
SWITCHED
CTRL +CTRL +
CTRL
SWITCHED
CTRL +CTRL +
CTRL
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
4 3 2 1
2 IN 1
MEZZO
324 AD CLASS2
WIRING
MEZZO
324 AD CLASS2
WIRING
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
-10 dBV
4 IN 3
2 1
2 IN 1 OUT4 3
SWITCHED
CTRL +CTRL +
CTRL
SWITCHED
CTRL +CTRL +
CTRL
STATUS
NETWORK
SIGNAL
70V
100V
25V
CAL
6s
3s
I4 I3 I2 I1 5V
IN2 1
-10 dBV
4 IN 3
4 3 2 1
2 IN 1
MEZZO
324 AD CLASS2
WIRING
MEZZO
324 AD CLASS2
WIRING
1
2
8
64 7
11
35
9
10

DRIVING HUMAN AUDIO EXPERIENCE
POWERSOFT S.P.A.
Via E. Con, 5 - Scandicci (FI) 50018 - Italy
support@powerso.com
[phone]
[phone]
POWERSOFT.COM