Trioma MOST-AMP 4.0 User manual

Триома Разработка и производство
интерфейсных адаптеров
[phone] www.trioma.ru [e-mail]
Adapter for original car amplifier
Model MOST-AMP 4.0
Service manual

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Телефон для связи: Почта: Сайт:
[phone] [email protected] www.trioma.ru
The contents
Chapter 1. Description 2
Assignment 2
Compatibility 3
Package contents 3
Chapter 2. Connection 3
Chapter 3. How does the adapter 4
If pseudo-adjustment "Fader" not activated 4
If pseudo-adjustment "Fader" activated 4
Chapter 1. Description
Assignment
Adapter Most-AMP used in car's audio system in the case, if you decide to replace the
original head unit on non-original unit, but you want to keep the original amplifier and
speakers. The Volume, Balance and all frequency adjustments are working full and pseudo-
adjustment "Fader", which is implemented by measuring the signal levels in real time.
Feature of the functioning of "Fader" is described below.
The adapter allows you to use non-original head units with the effective values of the
voltage on the RCA outputs from 1V to 4V.
On the device there are:
RCA-inputs and WakeUp connector (Fig.2),
platform for jumpers, connectors Power and MOST (Fig.3).
Fig.1. Most-AMP 4.0
Fig.2. Connectors RCA and WakeUp
Fig.3. Connectors Power and Most,
platform for jumpers

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Адрес: Оперативные чаты (Whatsapp, Viber):
Москва, ул. Римского-Корсакова, 1 [phone]
Compatibility
Cars with interface Most-25
Mercedes Benz (including W211 and W220),
Porsche,
BMW (except E65)
Package contents
Adapter Most-AMP 4.0 (Fig.1)
Power cable (Fig.4)
Jumpers (4pcs)
Service manual
Optional:
Connector (required for MB and BMW, Fig.6)
WakeUp cable (required for MB W211 and W220, Fig.5)
(extra cost)
Fig.4. Power cable
Fig.5. WakeUp
cable
Fig.6. Connector
Chapter 2. Connection
1) To set the jumpers according to the type of the original
system and the selected modes (Fig.7):
Jumpers must be installed in any AUTO position for MB
W211/W220
If the jumper is set to the position of the Fader ON, then
pseudo-adjust the Fader active
The jumper is set to position 4V input to head unit with the
effective value of the voltage on its RCA outputs more than
2V.
2) To connect the power cable (Fig.4):
blue wire (Rem.out) - to the control output of the installed
head unit.
red (Battery +12V) and black (GND) wires - to corresponding
power circuits of the car.
Fig.7. Jumper settings
connector of power cable to connector “Power”adapter (Fig.3)
3) Note only for MB W211/W220 –to connect cable “WakeUP”to connector “WakeUP”on
adapter and to pin No. 3 connector head unit (AGW unit).
4) The MOST optical connector in the corresponding connector “MOST” adapter.
5) Audio lines (left and right channels) to the RCA inputs of the adapter (Fig.2):
in the "Fader ON" mode –two lines "Front" (FR and FL) and two lines "Rear" (RR and RL)
speakers.
if you use no pseudo-fader is sufficient to connect only two lines of acoustics front (FR
and FL).

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Телефон для связи: Почта: Сайт:
[phone] [email protected] www.trioma.ru
Chapter 3. How does the adapter
When You turn on the non-original head device and a voltage appears on its control
output "Remout" in this time, adapter Most -AMP initializes the interface MOST within 1-2
seconds, includes original amplifier, set the volume to the optimal value, and adjust the
"Treble", "Bass", "Balance" and "Fader"- in the middle position. The analog input of the
adapter is switched on for receiving an external stereo signal with the current value of 1V or
more than 2V (depending on the presence of a jumper in position "4V input" - see Pic.3).
Thus, the sound signal from the line outputs of the head unit digitized and gets into a
original amplifier through an optical interface, work fine built-in audio adjustment - Volume,
Treble, Bass, Balance.
If pseudo-adjustment "Fader" not activated
In this case, adjusting the "Fader" will be ineffective (rear and front speakers will work as
in the middle position of the Fader).
If You want to use this adjustment, You should connect the RCA outputs of front channel
to inputs on the adapter Most-AMP, and rear speakers be disconnected from a original
amplifier and connect to the rear outputs of the capacity of the installed non-original head
unit.
If pseudo-adjustment "Fader" activated
The adapter will calculate the amplitude of the signal and to determine the difference
between the levels of the front and rear channels by measurements in real time and use this
data to determine the current value of the adjustment Fader. This algorithm has several
features:
- to adjust, use only three steps «forward» and three steps «back».
- control is performed with a little delay (about 1-2 seconds).
- the measuring part of the algorithm is forcibly turned off when small signals (in this case
retains the last set value of this setting).