so the max power of 12v supply is 8w in 2ohm?? Í m confusedNone !
12V single supply limits the output voltage to <4Vac (=11.3Vpp)
4Vac into 8r0 is ~2W
into 4r0 is ~4W
into 2r0 is ~8W
into 1r0 is getting silly.
so the max power of 12v supply is 8w in 2ohm?? Í m confused
To increase the output power, you need to increase the voltage.
Convert 24DC to rms AC (best case) and you get ~8VAC (that's (V*.707)/2.
Power is calculated like this: P=Vrms^2/Rload.
P=64/Rload. If Rload is a 2 ohm speaker, it will deliver ~32 watts rms.
using your 24Vdc singe supply, you could build a balanced amplifier that would deliver double the power into double the load impedance.
Design your amps to drive 2ohm (reactive) load and you can get 64W into 4ohm.
This is quite a task to design and build some 32W into 2ohm amplifiers and then balance or bridge them.
Design your amps to drive 2ohm (reactive) load and you can get 64W into 4ohm.
This is quite a task to design and build some 32W into 2ohm amplifiers and then balance or bridge them.
The TDA1562 could be your choice, if you can get hold of it. It is a BTL class-H amp with integrated voltage multiplier, so you get all the tricks to get more power out of an existing voltage in one package. It can deliver 55 W into 4 Ohm from 14,4 V at a reasonable THD of 0,5 %. A little less from 12 V.
Other than that you could buy a (maybe used) car amp. They have integrated SMPS to increase the rail voltage. Don't forget however that your PC's power supply must be up to the task of delivering that much power, too.
Other than that you could buy a (maybe used) car amp. They have integrated SMPS to increase the rail voltage. Don't forget however that your PC's power supply must be up to the task of delivering that much power, too.
The TDA1562 could be your choice, if you can get hold of it. It is a BTL class-H amp with integrated voltage multiplier, so you get all the tricks to get more power out of an existing voltage in one package. It can deliver 55 W into 4 Ohm from 14,4 V at a reasonable THD of 0,5 %. A little less from 12 V.
Other than that you could buy a (maybe used) car amp. They have integrated SMPS to increase the rail voltage. Don't forget however that your PC's power supply must be up to the task of delivering that much power, too.
any similiar to this one?
TDA1562 isn't avaliable in my store
The TDA1562 could be your choice, if you can get hold of it. It is a BTL class-H amp with integrated voltage multiplier, so you get all the tricks to get more power out of an existing voltage in one package. It can deliver 55 W into 4 Ohm from 14,4 V at a reasonable THD of 0,5 %. A little less from 12 V.
Other than that you could buy a (maybe used) car amp. They have integrated SMPS to increase the rail voltage. Don't forget however that your PC's power supply must be up to the task of delivering that much power, too.
Several years ago I bought a top of the line (at that time) Radio Shack car amp to be powered by a PC power supply. The results were disappointing. There are much larger PC PS units now at much better prices. Can you supply any additional information on using 12V amp/PC power supply combination? My intent would be to mono everything to drive a sub for a in-home setting.
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