Greetings to all!
My brother plays the keyboard in a band and needs amplification, so I suggested we make something.
After thinking a bit and looking around on Ebay, I decided it wasn't worth the effort to make any amps... not when one can buy 2 x 400w into 4ohms for £160 new. Plus my DIY electronics and ruggedness don't go hand in hand... So there's the power sorted. The amp arrived today - I've not opened it yet but it's nice and heavy.
For speakers we have decided on a stereo setup. I have plenty of 6.5" drivers handy so I was thinking 4 per side may be as many as we can get away with in something vaguely portable.
I'm thinking a sealed box design, with the drivers wired in series-parallel to obtain a 4ohm nominal load - perfect to use any amount of the amp's potential power reserves.
Now, the problems:
* will we have enough displacement for any kind of real bass notes?
* I don't know the specs of the drivers I intend to use and am not sure how to measure them! The process looks like a nightmare.
My brother plays the keyboard in a band and needs amplification, so I suggested we make something.
After thinking a bit and looking around on Ebay, I decided it wasn't worth the effort to make any amps... not when one can buy 2 x 400w into 4ohms for £160 new. Plus my DIY electronics and ruggedness don't go hand in hand... So there's the power sorted. The amp arrived today - I've not opened it yet but it's nice and heavy.
For speakers we have decided on a stereo setup. I have plenty of 6.5" drivers handy so I was thinking 4 per side may be as many as we can get away with in something vaguely portable.
I'm thinking a sealed box design, with the drivers wired in series-parallel to obtain a 4ohm nominal load - perfect to use any amount of the amp's potential power reserves.
Now, the problems:
* will we have enough displacement for any kind of real bass notes?
* I don't know the specs of the drivers I intend to use and am not sure how to measure them! The process looks like a nightmare.