Could someone help me to understand the different classes of amps? The new class d amps are small , and light. Why? What are the advantages, and disadvantages of the different classes as applied to instrument amplifiers? Also if Fahey sees this post, whatever happened with the possibility of selling the ( if I understood the thread correctly) semi kits for your amps? I think the idea of selling the kits a la carte was a very good idea. I would purchase one. The U.S. needs your product.

I didn't runaway. I have been trying to decide my next moves. I think the speaker part has been decided. When this started I was thinking one of the fearful designs by green boy. As it progressed I am leaning heavily in the direction of Bill Fitzmaurice's jack 12 design. I will not be moving this cabinet around a lot, so I will not try the lighter version of the cabinet with all the bending wood. The Elliott sound (mkll I think ) looks like a good place for me to start with amp builds. I may try something smaller first though haven't made up my mind for sure yet. I did find this interesting, http://www.albertkreuzer.com/preamp.htm#faq but looking at things briefly you will need a o'scope to complete the project. This is my first attempt at building something other than in school. I was quickly in the field repairing copy machines using a foolproof repair manual. ie... place red lead of volt meter on pin 12 place black lead on pin 16 if it doesn't show 24v replace board and bring old board for repair. I will be relying on you guys help if you don't mind. I didn't buy the peavey but it's probably still there.

Any ideas as to why this peavey musician is screaming when it is turned on??? It stops after it's been on a few minutes.

So it looks like the consensus is "keep it simple stupid"!!!??? I'm very interested in everything that has been said. Roly what would you suggest as a start .... can you point me in a good direction for a buildable ( <---- is that a real word? Aww you know what i mean. ) amp for bass? I love the idea of less watts, but better sound. I've looked around the net for some of the things mentioned here, and it's kept me busy. Here's proof.

I can get one of these Peavey series 300 things for about $40 but it reads Musicians where this one reads bass. It reminds me more of a preamp than a amp though. It yells a minute when you turn it on.
Good idea? Bad idea. Please help!!!

Thanks for the reply Roly. I have seen Bill on other fourms. He has boatloads of knowledge. I did spend a lot of time looking at his designs. I want that Motown like sound. From what I have seen so far he likes the mid-range sound. It does cut through better though. I think Jm was telling me the samething you are saying in a very tactful manner. I love his idea but I haven't seen those as kits.

Polo thank you also. I'm a single language guy, and i don't always do so great with that one.
I'm in bed on a tablet pc so i had to save the page and i will try and use google translate shortly.
Thanks again and if you guys come across plans for jm's suggestions please post them.

Thank you for the quick reply. I really like the idea of building a bass pre, and a 50/70 chipamp.
Are threads here that cover these? I'm using a 90w combo at the moment. It just sounds like junk to me. I like the sound of the old Ampeg b-15. The Motown sound is good to me. I'm a bottom end guy.
Is a 50/70 chipamp kit out there? Please point me in the right direction. My electronic background is from a trade school called R.E.T.S., pretty good 2yr. trade school in it's day. I worked as a field service tech in the copy machine industry for a while. If you have ever worked repairing things in the field you know i was more likely to snatch a board, and install a reworked one in its place. Component level work in the field was a no-no for me. I can adapt though. Thanks again for the reply.

Hello everyone. I am new to this fourm. I have a question that I haven't seen answered using the search function, although i'm certain it has been asked. I am probably not searching correctly. I want to build a bass amplifier and separate cabinet. I would like to go with 350- 500 watts. If this is dumb i'll just step back off this. The safe bet is SS, I don't want to try tubes, well , because I enjoy life, and i dont own a O'scope. First are their kits available for something like this, that you are aware of? I'm not too worried about the cabinet, l'll most likely go with one of the fearful designs if you are familiar with those.