12V, 100W , emergency type car amplifier

[RG80]

hello,

i am looking for ideas on how to design a police type 100W , 12V, power amplifier.
the idea is that this amplifier can be installed in a 12V car and produce 100W R.M.S output through an external speaker.

i know that it is not something special and that there are a lot of products doing exactly that (whelen, code 3, etc...).
but i need to build the PCB and would like to get some ideas on how to do it, or how to get the schematic diagram of such an amplifier.

can someone help?

i already searched online in google/YouTube and many forums but did not find an appropriate answer yet.

thx!

Click to read more...

 

[1aespinoza 10+ year member]

hello,

i am looking for ideas on how to design a police type 100W , 12V, power amplifier.
the idea is that this amplifier can be installed in a 12V car and produce 100W R.M.S output through an external speaker.

i know that it is not something special and that there are a lot of products doing exactly that (whelen, code 3, etc...).
but i need to build the PCB and would like to get some ideas on how to do it, or how to get the schematic diagram of such an amplifier.

can someone help?

i already searched online in google/YouTube and many forums but did not find an appropriate answer yet.

thx!

100 Watt Power Amplifier Circuit using MOSFET

In this audio/power amplifier circuit design tutorial, we will build a 100W RMS output power amplifier using MOSFETs and transistors with a 4 Ohms impedance speaker connected to it.

circuitdigest.com

 

[SlugButter]

You can probably find existing designs of the TPA3116 boards or TDA7498 and go off those and modify it into a mono amp. The TPA3116d2 boards will do 100 watts rms, but the power supply is 24 volts DC to do whole 100 watts. The TDA 7498 boards are around 200 watts RMS, but there again, it needs 36 volts to get that wattage. Those existing simple amplifier board designs are a good place to start, then you could do some better components, add some components or change some values of components when you path out your PCB board.

 

[RG80]

thank you!
i also came across this circuit design, the problem is that it is not 12V.
there are many solutions for 100W output with 40V or more,

i am looking for a 12 VDC powered design.
i know it is possible because there are many products who offer it, but i cant find how they are doing it,

any help will be appreciated,

thx!

 

[dragon.breath 10+ year member]

Why not just use a car audio amplifier?

 

[audiobaun 5,000+ posts]

Why not just use a car audio amplifier?

I was thinking the same

 

[RG80]

Why not just use a car audio amplifier?

what do you mean by car audio amplifier?
do you have an example?

 

[HardofWhoring]

what do you mean by car audio amplifier?
do you have an example?

just any car audio amplifier. What is an "emergency type amplifier" What is special about this?? Any car audio amplifier that plays speakers, will do 14.4v (when running) or 12v when the engine is off.

 

[audiobaun 5,000+ posts]

Amazon product ASIN B07FPY35GK

 

[SlugButter]

If you want something weather resistant, get a marine amplifier.