subwoofer amplifer circuit with OPA541BM

I see in the data sheets that the OPA541 can deliever 5A continuous and +-40V on the supply side.

subwoofer circuit

The OPA549 can deliever 8A, but can only handle +-30V on the supply side.

Here you can opa541bm, simply use a link from the period after the defeat on each chip back 1 / 8 pins on the opa541bm. Will give you 200 watts at 4 ohms
How do I calculate how many watts to deliever at 2ohm, 4 ohm or 8 ohm? V ^ 2 / R = W, but how can I find out how many volts can deliever. You can not deliever as much as the supply, or am I wrong?
Data opa541 “Voltage Swing = Vs-5, 5 @ IA = 5A”

Power @ 4 / 2 are generally of the P = ((I * root2) ^ 2) * R = R. limited 8/4/2 ..

Ipeak = V / R. Irms = Ipeak * root2. use for people with reduced mobility and Irms Vrms.
The first operational amplifier and was impressed with the results. I, however, that a simple circuit, the amplifier was very good. I do not have a detailed opinion on the quality of sound, as I am not an audiophile. If you are looking for a simple amplifier to the first draft, I suggest a “clone of gain.”

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I decided then to a more powerful amplifier with a copy of the operational amplifier OPA541 High Power’m as free samples. I was impressed with the results of this amplifier as well, using, given the poor quality of components I. An image of this amplifier is below.

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Both power amps have been mentioned by my bench power supply for testing positive with a positive bid for the railroad, providing 0v, and the positive power supply and one for the land, 0V and the second negative power supply rail. That led me to + / – 0-30V supply to an amplifier, easily enough for testing purposes.

I then two 15V 5A gives, and uses as above. I’m still in the construction phase power supply for my past. This is a wide range of + /-40V. This offer will be able to provide me with sufficient power amplifier.

It is in the testing phase, I rail UF 4700, found around these capacitors effect at the time of the construction industry. Shortly after the discovery provides two 15v, I found four capacitors 33,000 UF and now I am with two by rail, amounting to 66,000 UF rail. This amount of capacity, in my opinion are much more serious. This is because it consumes more bass, treble, and large capacitor banks to help the capacitors, the required power.