300w amplifier easy way

[dean95]

hi guys i search the easy way to build a 300w amplifier...
I have a subwoofer 300W with 4 ohm impedance...

I discover the driver audio LME49830 is the answer....
My question is : which mosfet could I use ?

is it the best solution ? have you other ideas?

thank a lot..🙂

 

[CJ900RR]

More easy would be this I think: http://www.diyaudio.com/forums/chip-amps/206591-tda7294-power-transistors-amp-tda7293-come-also.html

 

[AndrewT]

.........driver audio LME49830 is the answer....
My question is : which mosfet could I use ?.........

National give test results with 3 different mosFET types.
Just follow what they suggest in their information sheets.

 

[abraxalito]

4 * TDA7293 in bridged/parallel looks to me to be simplest at 300W into 4R.

 

[dean95]

I think to build the project advised by CJ900RR...
a question: which toroidal transformer could i use ?

p.s tda7293 or tda7294 ?

 

[Arty]

may we know the subwoofer too?
it is likely -but indeed i can be wrong- but the 300 watts are just a sticker,
it may hapen that You do not need more than 100 watts or less to make it explode.
Specialy if it was ment for car use.

p.s.: i'm not mean, i would just like to save you from the trouble of building a big 300 watt amp only to find out that the 300 "what" rated woofer will not handle than a few handfull..

 

[dean95]

thanks for the advice and i forget to say i've got a 300w subwoofer with 3.5 ohm impedance....
what is the maxim output power of this project....?

 

[AndrewT]

Is that 300W rating continuous, or music programme, or peak, or some other?

It may suit an amplifier from as little as 100W if that was a peak rating.

Or it may suit a 600W amplifier if that was a continuous rating AND you ensure the amplifier NEVER sends a clipped signal to the driver.

You need to know what the 300W rating means.

 

[Arty]

or at least the make and model of this woofer.

 

[gootee]

hi guys i search the easy way to build a 300w amplifier...
I have a subwoofer 300W with 4 ohm impedance...

I discover the driver audio LME49830 is the answer....
My question is : which mosfet could I use ?

is it the best solution ? have you other ideas?

thank a lot..🙂

dean95,

You found the right answer.

You might want to use a pair of ACD101NDD and ACD103PDD lateral mosfets.

See:

http://www.diyaudio.com/forums/soli...amplifier-based-lme49830-lateral-mosfets.html

It looks really, really good, to me.

Cheers,

Tom

 

[tranqspogi]

do you have any power amplifier using transistor like 5200 and 1943 200 watts to 500 watts? any one can share me?

 

[Paladinxxx]

tranqsogi I have a setup using these amps

2pcs L10 200W 200W Power Amplifier Kit Dual Channel 4ohm Amp Assembled Stereo | eBay

And also one 1pc L25 500W 4ohm KTB817 KTD1047 2SA1186 2SC2837 Amplifier Board | eBay