another one to build an AV800 / AV1000

[Lee Knatta]

Hi Forum

I'm new here and first of all I'd like to say hello and introduce myself.

From the subject you see I intend to build an AV800 or AV1000 amplifier designed by Anthony Holton. I started this project some time ago, bought a lot of parts and then stopped the project for many reasons, among them the lack of need for an amplifier at all. One of the other reasons is that I work as an electronics engineer and pcb designer so after work I don't like to spend my spare time with electronics. When cleaning up I found the box filled with parts again and made up my mind what to do with them.
Since I already invested some money in parts I decided to finish what I have started. Selling parts most likely won't bring much money so I better build an amp. I intend to sell parts I don't need for the amp after it's finished.

If you need parts required for the AV800 and can't find it you may write to me. I might have a lot of them I don't need - or not.

Starting in spring is a bad idea because I like to spend my summer in another way than to sit in front of my laptop designing or assembling pcbs. But in the meantime my skill designing things has increased so finish my designs much faster than a few years ago.

Many of those who attempted to build an AV800, AV1000 or an insane project based on them failed for various reasons or maybe just stopped their projects like me. I already built an amp long time ago that is so butt ugly I can't show you. From this project I learned some things and hope to succeed with this monster amp project. I hope to find help from the community for the case I experience problems with my amp and I also will try to help others.

This thread is intended to become a diary of building my amp. I will post progress, ask four your opinion, ask for help and just blog a little. You are welcome to post but please stay on topic a bit. I wouldn't like to end up discussing about tube amps in the end.

Attached a picture of some parts I already bought:
two huge toroids, 1kVA each
100 IRFP240
100 IRFP9240
25 Caps, each 10.000uF 100V
and some other semiconductors

You see I'm serious.

[Lee Knatta]

This will be the rectifier pcb.
It's almost finished.
Do you like the design?
Any suggestions for improvements?

[andrewlebon]

hi lee
greeting what version of av 1000 are you bulding
thanking you
andrew lebon

[HighTec]

Originally Posted by Lee Knatta

100 IRFP240
100 IRFP9240

Hi Knatta,

Just a tip. I see you have a bunch of transistors there. Make sure you match them before you assemble the amplifier.

[Lee Knatta]

Hi Andrew

I didn't know there are different amps called AV1000.
I'm building the one from Aussie Amlifiers.
I downloaded schematics from DIY Amplifier - Audio Amplifier Modules - MOSFET Amps - Audio Electronics - Power Amps long time ago.
I have three schematics to work with:
AV800 updated 2001-02-22
AV800 updated 2004-03-02
AV1000 from 2002-01-25

Lee

[Lee Knatta]

Originally Posted by HighTec

Make sure you match them before you assemble the amplifier.

Thanks.
That's why I bought 100 of them. I will offer the other matched groups here when I finished my amp.

[andrewlebon]

hi lee
greetings see schematic version 3release date 27 octber 2005
anthony holton has made changes from earlier schematic

thanking you
andrew lebon

[smblite]

Originally Posted by Lee Knatta

Hi Forum

I'm new here and first of all I'd like to say hello and introduce myself.

From the subject you see I intend to build an AV800 or AV1000 amplifier designed by Anthony Holton. I started this project some time ago, bought a lot of parts and then stopped the project for many reasons, among them the lack of need for an amplifier at all. One of the other reasons is that I work as an electronics engineer and pcb designer so after work I don't like to spend my spare time with electronics. When cleaning up I found the box filled with parts again and made up my mind what to do with them.
Since I already invested some money in parts I decided to finish what I have started. Selling parts most likely won't bring much money so I better build an amp. I intend to sell parts I don't need for the amp after it's finished.

If you need parts required for the AV800 and can't find it you may write to me. I might have a lot of them I don't need - or not.

Starting in spring is a bad idea because I like to spend my summer in another way than to sit in front of my laptop designing or assembling pcbs. But in the meantime my skill designing things has increased so finish my designs much faster than a few years ago.

Many of those who attempted to build an AV800, AV1000 or an insane project based on them failed for various reasons or maybe just stopped their projects like me. I already built an amp long time ago that is so butt ugly I can't show you. From this project I learned some things and hope to succeed with this monster amp project. I hope to find help from the community for the case I experience problems with my amp and I also will try to help others.

This thread is intended to become a diary of building my amp. I will post progress, ask four your opinion, ask for help and just blog a little. You are welcome to post but please stay on topic a bit. I wouldn't like to end up discussing about tube amps in the end.

Attached a picture of some parts I already bought:
two huge toroids, 1kVA each
100 IRFP240
100 IRFP9240
25 Caps, each 10.000uF 100V
and some other semiconductors

You see I'm serious.

Hi Lee,
How many toroid u have and how much the rating, if u r willing to sell how much the price?

smblite

[Lee Knatta]

Originally Posted by smblite

Hi Lee,
How many toroid u have and how much the rating, if u r willing to sell how much the price?

smblite

Originally Posted by Lee Knatta

two huge toroids, 1kVA each

I'm not willing to sell them since I need them for my amp.

[black]

you have picture for av 1000 pcb?