Marani MIR-A Series User manual

MIR-A
Speaker Management
Systems
MIR-A Series
User Manual
software-v0.3.3
REVISION-A1 DEC-2021

1
MIR-A MIR-A Speaker Management
Software specification
The Lightning flash with arrowhead symbol
within an equilateral triangle is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product ’s
enclosure,that may be of sufficient magnitude
to consute a risk of electric shock to persons.
The exclamaon point within an equilateral
triangle is intended to alert the user or the
p r e s e n c e o f i m p o r t a n t o p e r a  n g a n d
maintenance( s ervic i ng)instruc ons in the
literature accompanying the appliance.
Read these instrucons.
Keep these instrucons.
Heed all warnings.
Follow all instrucons.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any venlaon openings. Install in
accordance with the manufacturer's instrucons.
Do not install near any heat sources such as radiators,
heat registers,stoves, or other apparatus (including
amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or
groundingtype 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 third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or
pinched parcularly at plugs,convenience receptacles,
and the point wherethey exit from the apparatus.
Only use aachments/accessories specified by the
manufacturer.
Unplug this apparatus during lightning stormsor
when unused for long periods of me.
Refer all servicing to qualified servicepersonnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain ormoisture, does not operate
normally, or has been dropped.
This apparatus shall not be exposed to dripping or
splashing. And no object filled with liquid such as
vases, shall be place on the apparatus.
Do not overload wall outlets and extension cords as
this can result in a risk of fire or electric shock.
This apparat us h as b een de signed with Class-I
construcon and must be connected to a mains
socket outlet with a protecve earthing connecon
(the third grounding prong).
This apparatus has been equipped with a rocker-style
AC mains power switch. This switch is located on the
rear panel and should remain readily accessible to
the user.
The mains plug or an appliance coupler is used as the
disconnect device, so the disconnect device shall
remain readily operable.
PORTA B L E C A R T
WA R N I N G
IMPORTANT SAFETY INSTRUCTIONS
2
Use only with the cart, stand, tripod,
bra cke t , or t ab le spe c ifi ed by th e
m a n u fa c t u r e r, o r s o l d w i t h t h e
apparatus. When a cart is used, use
c a u  o n w h e n m o v i n g t h e
cart/apparatuscombinaon to avoid
injury from p-over.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
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14.
15.
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18.
19.

2
MIR-A MIR-A Speaker Management
Software specification
WARNING-To reduce the rish of fire or electric
shck,do not expose this appliance to rain or
moisture.
C A U T I O N -Internal l ithium baery.Danger of
explos i o n if baery is incorrectly replace d .
Replace only with the same or equivalent type.
WARNING-This equipment has been designed be
installedby qualified professionals only! There
are many factors to beconsidered when installing
p r o f e s s i o n a l s o u n d r e i n f o r c e m e n t
system s ,including mechanical and electrical
consideraons,as well as acousc coverage and
pe r for ma nc e . M A R A N I Co m me rci al s tron gl y
recommends that this equipment be installed
o n l y by a p ro fe s s i o n a l s o u n d i n st a l l e r o r
contractor
Please think of our environment and don’t bin
any materials, including this manual. When the
producthas reached the end of its useful life,
plea se disp ose of it re spon sibl y through a
recycling centre.
CAUTION
Risk of electric shock-do not open risque de choc
electrique ne pas ouvrir
Cauon:to reduce the risk of electric shock do
not remove cover(or back) no user-serviceable
parts inside refer servicing to qualified personnel
a e n  o n : p o u r ev i t e r le s r i s q u e s de c h o c
electrique,ne pas enlever le couvercle aucun
entreen de pieces interieures par l’usager.
confier l’entreen au personnel qualifie avis:pour
eviter les risques d’incendie oud’electrocuon,
n’exposez pas cet arcle a la pluie ou a l’humidite

3
MIR-A MIR-A Speaker Management
Software specification
INTRODUC T ION
The MIR-A series processor is a digital audio processor newly designed by Marani. It has extremely low noise
floor, high dynamic range and powerful internal DSP to cover most of the usage scenarios. Whether in meeng
rooms, small theaters, touring performances, or even large-scale tours, you can use the A series processors.
Advanced circuit design and original DSP algorithm are the core of pure and high-quality sound.There are 4
different models of MIR-A series, namely M IR260A/360A/440A/
480A, which means that they have 4 different channel configuraons of 2 in6 out, 3 in 6 out, 4 in 4 out, and 4 in
8 out. . In the signal processing part, they all use powerful MARANI DSP, DSP and AD/DA are running at 96KHz
sampling rate, complete processing funcons provide a complete speaker X-over soluon.
From input gain/delay/noise gate/EQ /compression/F IR， to output gain/delay/polarity/X-over/FIR/EQ /RMS
comp/Peak limiter, there are up to 13 types of parametric equalizer (PEQ) can be selected. The output
crossover filter includes the classic Linkwitz-Riley/Bessel/Buerworth, even NXF (Norched X-over Filter), and
the FI R filter with a slope of up to 120dB per octave. Oponally, the newly added M IR linear phase filter can
make the phase of the crossover point easier to join and produce a lower delay. Everything we provide is for
beer sound.
Newly added DS P plug-in, providing high-precision 96kHz sampling rate F IR filter/high-order signal
generator/RTA real-me spectrum analyzer and other praccal plug-ins.
The newly designed Hard Limiter allows a constant rate limit on signals exceeding the threshold at any
threshold to beer protect the speaker unit.
Each input and output provides a maximum 512-taps F IR filter, which can be customized by third-party
soware to generate the FIR convoluon you need. Used for speaker presets, it can improve the phase
response and control the direcvity according to requirements.
The newly added M IR linear phase filter has the shape of the tradional IIR filter (Linkwitz-Riley 24/oct), but
does not produce any phase distoron, and the resulng delay is about 50% of the FIR filter.
3

4-INSTALL
4.1-AC power input
The AC voltage provided by the audio processor with built-in global voltage operaon must be within ±10% of
the specified line voltage (100~240V). The third pin (grounding pin) on the power cord that comes with the
package is A necessary safety component, please do not try to disable the ground connecon by using an
adapter or other methods.
4.2-Signal input and output
4.2.1 -Analog signal input
Like all digital signal processing equipment, the signal level supplied to the unit must be appropriate to avoid
working in a low signal-to-noise rao or distoron. The MIR-A series processors can accept up to +20dBu
analog signal level, which is greater than the linear output level of most mixers, so the impact of this type of
problem is reduced. When performing equalizaon processing, pay aenon to the boosted gain value not to
be too large, so as to avoid the gain of the unit from causing digital clipping. (Of course, you can use the built-in
an-clipping funcon to prevent this event from happening). It must be noted that the maximum input level in
the specificaon is a clipping level, not a safe praccal level. It must be ensured that the clipping level is not
lower than the next device in the signal chain, and a certain margin must be le during use.
4
MIR-A MIR-A Speaker Management
Software specification
12
XLR Balanced：
Signal(in phase+）
Signal(out of phase-）
Ground,shielding
1
2
3
3
XLR Unbalanced：
Signal
2
Ground,shielding
1 3
12
3

5
MIR-A MIR-A Speaker Management
Software specification
111
222
777
333
444
555
666
888
999
101010
2*20 LCD display.
Navigaon knob, responsible for the main funcon switching,
menu up and down.
The P M1 kn ob is respo nsibl e for turning on/off some
funcons and coarse adjustment of some values.
Input signal level meter: display the pre-fader signal, the mute
does not affect display. When the Mute light is on, it indicates
that the current channel is muted, and when the SIG light is
on, it indicates that the input signal reaches -40dBu; -12dBu,
0dBu, +6 dBu, and +12 dBu represent the actual RMS value of
the signal. When the Clip/Over light is on, it means that the
sig nal has bee n disto rted before the a nalog-to-digital
conversion. The Limit light will be on when the input channel
compressor is acvated.
Output signal level meter: display the post-fader signal, When
the Mute light is on, it means that the current channel is
muted, level meter does not display any value aer mute.
When the SI G light is on, it means that the input signal
reaches -40dBu; -12dBu, 0dBu, +6 dBu, and +12 dBu represent
the actual RMS value of the signal. When the Over light is on,
it means the signal reaches the Hard limiter threshold value,
the Limit light will light up when the output channel RMS
compressor and peak limiter are acvated.
USB Type B interface, for PC connecon.
UTI LI TY, click to open the main menu. ESC, click to escape.
ENT ER, click to next step.
The P M2 kn ob is respo nsibl e for turning on/off some
funcons and fine adjustment of some values.
Input channel selecon key: Click this key to edit the
processing of the current input channel, including channel
na me, ga in/p olar ity / delay / P E Q /co m press o r an d ot h er
parameters. Hold for three seconds to mute the current
channel.
Output channel selecon buon: Click this buon to edit the
processing of the current input channel; include input
channel matrix roung, high and low pass filter frequency,
slope, filter type; also include gain/polarity/delay/parametric
equalizaon /RMS compressor/peak limiter/hard limiter and
other parameters. Hold for three seconds to mute the current
channel.
111
222
333
444
555
666
777
888
999
101010
4.3.Overview of the processor front panel

6
MIR-A MIR-A Speaker Management
Software specification
111
222
333
444
555
666
AC power input, standard IEC interface, please ensure that
the power grounding pin is well grounded, otherwise electric
shock may occur.
Power switch.
LAN control interface, supports TCP/U DP protocol, IP address
defaults to DHCP.
Rs485 protocol interface, providing 1 input and 1 output dual
interface, which can be used to connect to soware, and can
also be used for 3rd device protocol transmission.
Analog signal output interface, maximum output level
+18dBu, minimum load 100Ω.
Analog signal input interface, maximum input level +20dBu,
input impedance 20KΩ.
111
222
444
555
666
4.4.Overview of the processor back panel
Rs485- Orange
RS485+White orange
333

7
MIR-A MIR-A Speaker Management
Software specification
ENT ER
PUS H
Select signal type
Adjust signal level
PM1
PM2
Turning
PM2
Turning
PM1
Select input channel
Turn on/off linkage
PM1
PM2
Turning
PM1
Turning
PM2
ENT ER
PUS H
Select input channel
Turn on/off linkage
PM1
PM2
Turning
PM1
Turning
PM2
ENT ER
PUS H
Turning
PM2
5.FRONT PANEL OPERATION
5.1 System Sengs
Ulity general menu contains 3 sub-menu System
sengs,Under Ulity Menu, turn the NAV navigaon
key to select System Ulies
5.1.1 Input Source Selecon
Press Enter to enter the secondary sub-menu, where
you can select Analog input or bu il t- in S ig na l
generator.
5.1.2 Signal Generator Sengs
Use the P M1 knob to select pink noise or white
noise, and use the PM2 knob to adjust the signal
level from -30dBu to +10dBu, with a step of 1dB.
5.1.3 Link Input
For the linked input channel, modify the sengs of
any one of the linked channels, and the other linked
channels will synchronously modify the same value.
Turn the le and right knobs PM1 to select the ABCD
channel, turn PM2 to the right to turn on the
selected channel linkage, turn PM2 to the le to turn
off the selected channel linkage.
5.1.4 Linkage output
For the input channel aer linkage, modify the
sengs of any linkage channel, and the other linkage
channels will simultaneously modify the same value.

5.1.6 Recall mode (mute safety)
When this mode is turned on, the current channel
mute state will be maintained regardless of reading
any preset, and only the muted state of the preset
will be read when this mode is turned off.
This funcon can prevent the loud sound pressure
from the loudspeaker from frightening the staff when
switching presets.
Protect the output from distoron Keep the signal
aer the processor A/D will not be distorted, and
ensure that no distoron occurs in the processor
regardless of any improvement.
Turning
PM1
ENT ER
PUS H P M 1
PM2
ON/OF F
ON/OF F
Knob PM1 selects the 1234 channel, turn PM2 to the
right to turn on, and turn P M2 to the le to turn off
the linkage.
For example, if you need to link output channels 3
and 4, the operaon sequence is:
● Click the ulity buon
● Use the NAV knob to select system
● Click Enter to enter the submenu
● Rotate PM1 to the right to select 3 channels
● Turn right PM2 to turn on
● Connue to rotate PM1 to the right to select 4
channels
● Turn right PM2 to turn on
5.1.5 Keep Linked channels level offset (linked by
DCA mode)
Allows the fader to be link in equal proporons in
different posions. When the proporon of the input
or output channels needs to be adjusted as a whole
during use, the default linkage funcon will make the
gain of each channel change along with the first
changed channel. If you do not want to use it If the
gain rao changes, you can use this funcon, similar
to the DCA/VC A groups.
When the channel linkage is not turned on, this
funcon is not available.
8
MIR-A MIR-A Speaker Management
Software specification
ENT ER
PUS H
Enable/disable linkage
PM1
PM2
Select output channel
Turning
PM1
Turning
PM2
Turning
PM1
ENT ER
PUS H
PM1
PM2
ON/OF F
ON/OF F

For example, read the present 3 from the machine
Press ulity
● Turn the NAV knob to the right
● Go to Program Ulies and press Enter
● Press Enter to Recall a Program
● Turn the NAV knob to the right
● Choose P03
● Press Enter to wait for the machine to finish
reading
5.1.8.2 Save preset
Save the current input / output / roung, and the
enre state of the filter to the machine.
For example, if some changes have been made to the
channel and need to be saved in the processor, follow
the steps below to save:
● Click the ulity buon
● Use the NAV knob to select program
● Press Enter to enter the submenu
● Rotate NAV to the right to select save a program
● Press Enter to enter the next level
●Rotate PM1 to the right to select the preset
posion (such as P01)
● Press Enter to confirm
5.1.7 View firmware version
You can check the firmware version of the current
processor, you can go to the our website to download
the latest version of the firmware to get funcon
updates and bug fixes.
Among them, F P is the front panel firmware and MB
is the main board firmware.
Note:
1. The firmware version can be upgraded online.
2. Back up all presets before the firmware upgrade.
3. During the upgrade, keep the power supply
intact. If the upgrade fails midway, irreversible
data loss may occur.
5.1.8 Program (preset) sengs
Under UTILITY MENU, turn the RAV knob to select
program Ulies.
5.1.8.1 Read preset
Can read previously saved presets from this unit
(Before pressing read, please save the current
preset, otherwise the current modificaon will be
lost) Add a box.
9
MIR-A MIR-A Speaker Management
Software specification
ENT ER
PUS H
NAV
Turning
Turning
PM2
ENT ER
PUS H
PM1
PM2
Select the text edit locaon
Select characters
NAV
Turning

● Click the Ulity buon
● Use the NAV navigaon knob to select Network
● Click Enter to confirm
● Click Enter to the next level
● Rotate NAV to the right to select RS-485 I D
● Click Enter to confirm
● Rotate PM1 to the right to select 03
● Click Enter to confirm
5.1.9.2 Device name
The model of the machine is displayed by default, if
you need to modify it, please follow the following
order:
●Click the Ulity buon
●Use the NAV knob to select Network
●Click Enter to confirm
●Rotate NAV to Device Name
●Click Enter to confirm
●Rotate PM1 to the right to select the edit
character posion
●Rotate PM2 to the right to select characters
●Rotate PM1 to modify the character posion,
PM2 to select the character, the maximum
allowable 16 characters
●Enter to confirm the modificaon and return
● Enter the name, PM1 select the character
posion, PM2 select the character from the
gallery below, the maximum allowable 16
characters
● Aer the modificaon is completed, click Enter to
save
5.1.9 Network opons
Under the sengs, turn the RAV knob, the last
opon is the network seng, the network seng is
used to connect to the processor management
soware, and provides 3 different interfaces, namely
USB, RS485, LAN,Among them, the USB connecon
is the easiest, and the installaon driver can be
directly connected to the PC;RS485 needs to set the
serial port number, ID, baud rate, etc., and need to
be consistent with the PC sengs;LA N is suitable for
mulple processors or long-distance connecons.
Through the local area network, stable connecon
quality and high connecon speed can be obtained.
The MIR series processors provide three connecon
methods: USB/RS485/TCP IP, and you can choose any
one of them to connect without choosing.
The RS485 serial port can be set in the network
opon menu, a nd the netwo rk seng s of the
machine can be viewed.
5.1.9.1 Set RS485 ID number
When mulple devices are connected via RS485
protocol, they need to be set to different ID numbers
and cannot be repeated. Aer clicking Enter , rotate
PM1 to select ID numbers from 1-32.
For example, the steps to set 485ID to 3 are:
10
MIR-A MIR-A Speaker Management
Software specification
Turning
PM1
ENT ER
PUS H

5.1.9.3 IP IP address
Only the I P address is displayed here, and the default
is automac acquision, and the real address will be
displayed aer the connecon is successful. It
cannot be modified on the panel.
5.1.9.4 Subnet mask
The display is 255.255.255.0, which is only for display
and cannot be modified on the panel.
5.1.9.5 Gateway
Only for display, if you need to modify, you need to
use the soware to modify online.
5.1.9.6 LAN Mode
The LAN mode defaults to DHCP, and the panel is
only used as a display. It can be modified to DHCP or
a fixed I P address through soware. When the
number of devices exceeds a certain number, that is,
there are too many D H C P servers in the LA N,
network congeson may occur, so it is recommended
to >5 pcs processors When connecng at the same
me, use the fixed IP method to connect.
5.2 Seng of input channel
Edit input channel
Click the E DIT buon below the processor level
meter to edit the processing module of the input
channel, long press to mute the current channel.
ENT ER
PUS H
ENT ER
PUS H
The level meter of the input channel shows the pre-
fader level, that is, it is not affected by mute; the
level meter of the output channel shows the post-
fader level, and the level is not displayed aer the
mute.
5.2.1 Channel name eding
Click the edit buon and the first item displayed is
the channel name edit.
The default display, if you need to modify, please
follow the following order:
●Click the Edit buon to edit the channel
●Click enter to confirm
●Rotate PM1 to the right to select the edit
character posion
●Rotate PM2 to the right to select characters
●Rotate PM1 to modify the character posion,
PM2 to select the character, the maximum
allowable 6 characters
●Click Enter to save aer modificaon
11
MIR-A MIR-A Speaker Management
Software specification
ENT ER
PUS H
Turning
PM2
Turning
PM1
Turning
PM1
Turning
PM1

Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
When adjusng the maximum allowable gain, the
adjustment step of the knob PM1 is 1dB, and the
adjustment step of PM2 is 0.1dB.
There are three levels of start-up me adjustable,
namely fast, medium and slow.
5.2.4 Gain
Controllable gain range from -18 to + 12dB, 0.1dB
step.
5.2.2 Noise gate
The noise gate can appropriately suppress the
o b v i o u s b a c k g r o u n d n o i s e c a u s e d b y t h e
accumulaon of front-end equipment or improper
system sengs. On the current page, click Enter to
edit the overall state of the noise gate, and rotate
PM1/PM2 to open or close the noise gate.
The threshold can be adjusted from -80 dBu to -45
dBu through Pm1.
The startup me can be adjusted from 1ms to
1000ms by rotang Pm1.
The release me can be adjusted from 1ms to
1000ms by rotang Pm1.
5.2.3 Dynamic loudness booster
In the input channel, the working principle is based
on the equal loudness curve of the human ear to
compensate and enhance the ultra-low frequency
and ultra-high frequency.
When the signal strength is low, the boost rao is
relavely large; when the signal strength is high, the
boost rao is relavely small or even zero.
The maximum allowable boost gain value can be set
separately for UHF and UHF, and the seng of
starng speed is also provided.
12
MIR-A MIR-A Speaker Management
Software specification
Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1

5.2.5Polarity
The overall polarity can be selected as posive
polarity or -180° reverse polarity, which can be used
to match the phase of the loudspeaker or correct the
overall inversion caused by the wrong connecon of
the signal cable.
5.2.6 Delay
The input part can provide a maximum delay of 340
mill isecond s, which ca n be used to del ay the
alignment of the tower speaker and the main
amplifier speaker, with a maximum distance of 115
meters.
5.2.7 Compressor
RMS compressor, reduce the start threshold to use
the compressor to control the dynamics of the input
signal.
Using a lower start me (such as 5ms) and a higher
release me (such as 1000ms) can firmly control the
input signal within a certain range, of course, this will
bring an obvious sense of compression (flatness).
1dB Step
0.1dB Step
PM1
PM2
Turning
PM1
Seng different start/release mes in combinaon
with musi c typ es will bring d ifferent listening
fe e l i n g s , a n d m a ke u p c a n a l s o b e u s e d t o
compensate for the loss of loudness. And with a
variable knee seng, the default 0 is the hard knee,
and the threshold is the compression starng point;
100% is the so knee, when the compression starng
point is lower than the set threshold, and gradually
exceeds the threshold to achieve full effect.
Under high compression raos, it is easy to hear
unnatural and abrupt sounds when using hard knees.
On the contrary, using so knees can make the
compression transion smoothly and bring a natural
sense of hearing.
Compressor switch
The start threshold can be adjusted from -10dBu
to +20dBu.
The compression rao can be adjusted from 2:1
to 32:1.
Th e so  and hard i n fl e c  o n point can be
adjusted, among which 0% is the hard inflecon
point and 100% is the so inflecon point.
The adjustable range of the release me is:
100ms to 15000ms.
The start-up me can be adjusted from 0.1ms to
1000ms.
13
MIR-A MIR-A Speaker Management
Software specification
ENT ER
PUS H
Turning
PM1
Turning
PM2
Turning
PM2
Turning
PM2
Turning
PM2
Turning
PM2
Turning
PM2

Turning
PM1
Turning
PM1
NAV
Turning
Turning
PM1
NAV
Turning
Turning
PM1
Pro vi d e s a u t o m a c co m p r e s s o r s e  n g s , a n d
automacally sets the compression start threshold
and so and hard inflecon points according to the
size of the music signal.
PM1
PM2
1dB Step
0.1dB Step
ENT ER
PUS H
Turning
PM1
5.2.8 Equalizer Mode
Provide 4 combinaons,
When mulple PEQs are needed, 31 bands of PEQ
can be provided at most;
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MIR-A MIR-A Speaker Management
Software specification
Turning
PM1
Turning
PM1
When you need to use FIR, you can
use the combinaon of FIR+17 PEQ；
You can also use the Target EQ+PEQ
that can be saved separately;
The most complete combinaon is
PEQ+TEQ+FI R.
5.2.9 FIR filter
The input channel allows the user to use a 512taps
FIR filter, its operang sampling rate is 48kHz.
But do not do any processing for the signal aer
24000Hz, keep it as it is.
You can connect the soware to edit the FI R filter,
import or generate FIR high/ low / band pass filters
according to the guide.
When PEQ mode is selected as with FIR filter, this
opon can be turned on.
Note: When PEQ mode is selected as full PEQ , FIR
filter is not available, N/A is displayed.
Turning
PM1

● Click the Edit buon of input B
● Use the NAV knob to select PEQ1
● Click Enter to enter the edit
● Rotate PM2 to the right to select HiShvQ
● Click Esc to return
● Connue to rotate NAV right to select frequency
adjustment
● Turn PM1 to the right to adjust the frequency to
5500Hz, use PM2 to fine-tune to 5506Hz
● Click Esc to return
● Right-turn NAV to adjust gain and Q value
● Use PM1 to adjust gain and PM2 to adjust Q value
● Complete and return
Typ e s in clu d e: B E L L , Hi Shv1, HiS hv 2 , Hi ShvQ ,
LoShv1, LoShv2, LoShvQ , LP 1st, LP 2nd, LP Q, HP
1st, HP 2nd, HP Q, Notch, AllPs1, AllPs2.
5.2.10 Equalizer state
PEQ overall on/off, TEQ overall on/off.
Note: When PEQ mode is selected as full PEQ , TEQ is
not available, that is, N/A is displayed.
5.2.11 T EQ (Target EQ)
Types include: BELL, HiShvQ, LoShvQ , LP Q, HP Q.
5.2.12 PEQ1-31
S p e c i fi c t u r n i n g of e a c h b a nd of p a r a m e t r i c
equalizaon, aer Enter, you can rotate PM1 to
select the filter type, you can select high and low
Shelf /Bell/High and low pass/all pass/notch, etc.
ro ta t e t h e R A V b u  o n to e n t e r t h e s p e c i fi c
parameter adjustment, PM1= gain, PM2= Q value ,
Frequency and so on.
To add a high-shelf Q with a frequency of 5506Hz, a
bandwidth of 5.1, and a gain of -5dB to input channel
B, follow the steps below.
15
MIR-A MIR-A Speaker Management
Software specification
TEQ O N
PEQ O N
PM1
PM2
Turning
PM1
Turning
PM2
Turning
PM2
NAV
Turning
Turning
PM1
Turning
PM2
NAV
Turning
Turning
PM1
Turning
PM2

5.3.2 Input matrix
The input matrix allows the user to mix 4 input
signals to any output channel in any rao. The knob
PM1 selects the ABCD input source, and the P M2
adjusts the gain amount, which can be adjusted from
-30 to 0dB.
The default route of MIR440A is channel A BCD pass-
through output 1234. In actual use, it may be
necessary to assign one input signal to mulple
output channels, such as roung input channel A to
output 12 (since output channel 1 has sent 0dB from
input A by default, so directly start from channel 2).
● Press the select key for output 2
● Select the NAV navigaon buon to go to the
Source screen
● Press Enter
● To rotate NAV, select B
● Rotate PM2 to adjust the gain of input B to minus
infinity
● To rotate NAV, select A
● Rotate PM2 to adjust the gain of input A to 0dB
● press Esc to complete
On/off
Gain
PM1
PM2
ENT ER
PUS H
Push
5.3Edit output channel
EDI T buon click into the lower level processor can
edit the table processing module output channels.
Long press the Edit buon to mute the current
channel, the level meter of the output channel
displays the post-fader level, and does not display
the level aer mute.
5.3.1 Channel name
1 Channel name edit
Click the Edit buon and the first item displayed is
the channel name edit
The default display, if you need to modify, please
follow the following order:
●Click the channel edit buon
●Click Enter to confirm
●Rotate PM1 to the right to select the edit
character posion
●Rotate PM2 to the right to select characters
●Rotate PM1 to modify the character posion,
PM2 to select the character, the maximum
allowable 6 characters
●Click Enter to save aer modificaon
16
MIR-A MIR-A Speaker Management
Software specification
NAV
Turning
Turning
PM1

1dB Step
0.1dB Step
PM1
PM2
Turning
PM1
Turning
PM1
5.3.3Gain
The controllable gain range is from -18 to +12dB in
0.1dB steps.
5.3.4 Polarity
The overall polarity can be selected as normal
polarity or -180° reverse polarity, which can be used
to match the phase of the loudspeaker or correct the
overall inversion caused by the wrong connecon of
the signal cable.
5.3.5 Delay
The output part provides a maximum delay of 170
milliseconds, which can be used to align the me
between the mul-way units, in a step of 10.4
microseconds/0.01 milliseconds.
5.3.6 RMS compressor
It is mainly used to limit the RM S power of the unit. It
needs to cooperate with the AES power provided by
the unit manufacturer and the amplificaon factor of
the power amplifier to calculate the threshold; the
aack me is oen deter mined by the pe riod
corresponding to the frequency of the high-pass
filter, and the release me is always set to 16 mes
the startup me。
For example, the AES power (2h) of a HF driver is 100
was, the impedance is 16 ohms, the crossover point
is 1000 Hz, and the amplificaon factor of the power
amplifier is 40 dB, then according to P=U2/R, the
maximum input voltage of the unit is 40 volts,
divided by The power amplifier magnificaon is 100
mes, the voltage limit should be acvated when the
signal level is 0.4v, 0.4v is converted to 20log
(0.4/0.775) to get -5.84 about -6dBu, that is, the
threshold is -6 dBu; the cycle corresponding to the
crossover point 1000 If it is 1 ms, then the start me
can be set to 1 ms, and the release me is 100 ms.
Compressor switch.
The aack me can be adjusted from 0.1ms to
1000ms.
The start threshold can be adjusted from -10dBu to
+20dBu.
Release Time can be adjust from 100ms~15000ms.
17
MIR-A MIR-A Speaker Management
Software specification
Turning
PM1
Turning
PM1
ENT ER
PUS H
1dB Step
0.1dB Step
PM1
PM2
Turning
PM1
Turning
PM1
Turning
PM1
*1ms
PM1
PM2
10um

Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
Turning
PM1
The compression rao can be adjusted from 2:1 to
32:1.
The so and hard inflecon point can be adjusted,
among which 0% is the hard inflecon point and
100% is the so inflecon point.
Co m pre s sion com p e nsa on can be set ran ge:
0~12dB.
5.3.7 Peak limit
It is mainly used to limit the peak signal and protect
the woofer from mechanical damage caused by the
voice coil movement exceeding the linear stroke. If
you need to accurately set the stroke/frequency and
voltage curve of the unit, you can consult the
manufacturer of the unit Or measure and obtain data
by yourself.
For example, using the ** model woofer, it is found
that the stroke of the unit reaches the limit of 12mm
at 103 volts. At this me, the amplifier magnificaon
is 38dB, 103/80=1.2875v, 20log (1.2875/0.775)=4.4,
that is, the peak compressor's The startup threshold
is 4.4dBu.
Peak limiter switch.
The th reshol d can be adjusted from -1 0dBu to
+20dBu.
The adjustable range of the release me is: 100ms to
15000ms.
The aack me can be adjusted from 0.1ms to
1000ms.
5.3.8 Hard Limit
There is no seng of start me and release me in
the hard limit. By directly seng the limit threshold,
the internal signal flow is prevented from being
distorted.
It can be used to match the gain structure of the front
and rear systems. The simple ones are oen the most
intuive and effecve.
5.3.9 X-over mode
The MIR-A series has built-in three kinds of crossover
filters.
① Tradional II R filter, including three types of
Linkwiz-Raylei/Bessel/Buerworth, with a
maximum slope of 48dB/oct.
② MIR linear phase IIR filter, using Marani's
exclusive algorithm, retains the shape of the
Linkwitz-Riley /Bessel/Buerworth filter types
without phase distoron, maintaining the linear
phase, and controlling the me delay at the
same me In a reasonable range, it can directly
replace the tradional IIR filter for speaker
frequency division, and only need to align the
delay.
③FIR finite impulse response filter, allowing users
to customize the window funcon in the
soware to generate high-slope and steep filter
shapes, and also accept FIR convoluon
generated by external third-party soware
based on measurement, which can realize
complex filter shapes and mulple secons The
parameters are equalized and the phase is
corrected at the same me.
18
MIR-A MIR-A Speaker Management
Software specification
Turning
PM1
1dB Step
0.1dB Step
PM1
PM2
ENT ER
PUS H