Another ambitious project! The goal: to build a sub amp that is capable of driving (up to) 1000 watts into a 2 ohm load.
Normal use for this amp would be a 4 ohm load, but for future consideration, I thought it would be better to over-build rather than just meet my immediate needs.
I am currently using a ~500 watt @4 ohm based on Rod Elliot's P68. This was my first ever amp build, and though it works very well, it looks pretty rough. I did it on an old circuit board recycled from a scrapped receiver. I sanded off all of the copper and wired all of the components point to point. Truly amazing it works at all! In another thread here, there's a picture of it (in the top right hand corner) and the sub it drives.
I have been planning this for a while now, and I've come up with a schematic that sims well and is relatively simple. Supply voltage is +/-70 volts from a 50-0-50, 850VA toroid.
During my last amp project (Patchwork ) I learned a lot, but I'm still nowheres near confident enough to try to pull this one off without some help and guidance.
Anyhow, here's the schematic. I ask for any advise and critical comment (good or bad).
Normal use for this amp would be a 4 ohm load, but for future consideration, I thought it would be better to over-build rather than just meet my immediate needs.
I am currently using a ~500 watt @4 ohm based on Rod Elliot's P68. This was my first ever amp build, and though it works very well, it looks pretty rough. I did it on an old circuit board recycled from a scrapped receiver. I sanded off all of the copper and wired all of the components point to point. Truly amazing it works at all! In another thread here, there's a picture of it (in the top right hand corner) and the sub it drives.
I have been planning this for a while now, and I've come up with a schematic that sims well and is relatively simple. Supply voltage is +/-70 volts from a 50-0-50, 850VA toroid.
During my last amp project (Patchwork ) I learned a lot, but I'm still nowheres near confident enough to try to pull this one off without some help and guidance.
Anyhow, here's the schematic. I ask for any advise and critical comment (good or bad).