Bulding my own amp !

well I'm trying to build my own"combo" amplifier bass -amplifier and a speaker in a single cabinet-(preAmp and powerAmp) ,with effects like "compressor" , "chorus"," flanging" ,"delay" , "looping"... and such stuff!

for the Power amp I think I found what I want the first model , or this scond model , well I'm counting on putting a power station that will transform the "regular" plug 220V/50hz to the 9V needed!

but these amps give you only a "volume control" and I want to put before the power amp some effects (with the pre amp) so if any one can please arithmetize me how to make those effect I will be really grateful (doesn't matter how does it coast or or how complex it is , and please don't tell me "just by an amp it will coast you less ! " :lol: !!

edit : I found this link for a simple preamp , but I need more effects than "Treble","Middle","Bass" and "volume" control ...

than'x

The effects are going to be both difficult and costly. Do you have any background in engineering? Can you read electronics diagrams and schematics?

I'm just hoping that, with the complexity of the effect you're looking to replicate, that you won't run into trouble if/when something doesn't work and it'll be difficult/impossible for you to troubleshoot it without a pretty intimate knowledge of how those things work...

That said, check out:

http://www.diyguitarist.com/

http://www.diystompboxes.com

http://www.buildyour...com/index1.html

http://skyturtle.com...-guitar-pedals/

The stompbox/effects are what you'll be interested in. I don't know what the best way to build them is - perhaps doing some individual effects, and building them each into the amp, as opposed to tyring to build a single circuit do to all your desired effects. Things like Wah, looping and delay will be more difficult than simple distortion or compression.

Sounds like a cool project ... there's TONS of prebuilt DIY effects kits out there...save you the trouble of etching circuitboards and finding obscure resistors and other components.

:dunno: GOOD LUCK!

don't worry about the engineering (^^) that's the easy part ...

well all I've found in your links is some examples of home made "effect pedals" for sale but no schematics... and especially no schematic that could be integrated with a powerAmp (cause I'm working on a "combo amp" ) I'm going with this schematic

i found also this model! but from the schematic I couldn't get a clue about the effects in there ...

Good Luck and be careful. Having dabbled with some guitar electronics I know that it can be challenging and rewarding. Have you done any simpler work like rewiring a guitar first? Amplifiers can be dangerous. I have built a theremin before..fun!

well I know a bit of engineering building something from a schematic ain't strange for me + I'm having a bit of assistance from real experienced engineers... so no problem ^^

the parts : I've checked, they are not so expensive and can be done in may range !

still one small problem a preAmp that provides the effects needed(at least "compression" or "distortion"... I'm not looking for Wah and stuff

for now all the effects I've found are "bright" and the controls for "Treble","Middle","Bass" and "volume" ...

It doesn't have to be all in the same chip , I'll wire every thing up after ...

don't worry about the engineering (^^) that's the easy part ...

... all I've found in your links is some examples of home made "effect pedals" for sale but no schematics...

Then you weren't looking hard enough!! ;)

I'm glad it's not "walkthroughs" and basic stuff you're looking for...

Dig: http://www.diystompb...schematics.html

There's a PILE of schematics. Bear in mind, it's just the effects... you'll have to find a way to integrate them into your amp, but the principle should be the same... just wire them into your signal path, perhaps with a true-bypass switch so you can turn them off... just like an external effects loop, but built into your cabinet.

:dunno:

Also, I'm a trombonist...so what the hell do I know!

than'x it with the right sequence this should be easy enough! I'll keep you posted and I'll put the final schematic for you if you want (once it's done :P ) ...

than'x for the help

Also, I'm a trombonist...so what the hell do I know!

xD Lol

Yeah I looked into this, but got scared off by 120V. Good luck, it can be pretty profitable, too, just gotta bully up to expos.

Woah I built my first amp over 10 years ago. It caught on fire one night when I kicked in some distortion and wah at the same time with the volume level above 6. Pretty funny to see my mom's face. Anyway, even with a real engineer by your side, my advice, learn the stuff on your own and then reference him, because if he's anything like me, he won't put a professional effort into something like this (unless he's your dad or something.) Otherwise, he'll probably just say, oh this looks right and ignore the fact that you have an infinite resistor ladder that goes no where.

Some side notes:

Advice:

Use tubes instead of solid state. The grace period for tubes is much larger than solid state. This roughly translates into your amp won't blow up when it power ups and you can debug without blowing up too,

Pick your speakers first. From there you need to pick the output and single/push-pull.

Compare different schematics. IF you're reasonably smart, you'll see patterns.

Once your design are picked, you essentially has sealed the ability of your amp.

KISS (keep it simple stupid.)

Pay attention to rating and values of parts. If you don't, things blow up.

Transformers, enough to support voltage and current.

Choke needs to be pretty damn close to your current.

Chassis, be smart, don't skip it.

Chassis needs to look cool, but remember current goes where current needs to go.

Don't let the chassis be, edit. That means, be good with metalshop.

Refer to transformer for drill size.

IEC power cord needs a hole. You'll be surprised how often people forget that -_-.

Don't forget a primer.

Cure the paint.

Wire up one by one. Otherwise, it'll be to much to follow.

Directly > indirect(wiring)

ezpz.

Yeah I looked into this, but got scared off by 120V. Good luck, it can be pretty profitable, too, just gotta bully up to expos.

the big problem with selling this kind of stuff is the external case, it looks always "home made" and not professional .

Woah I built my first amp over 10 years ago. It caught on fire ... Pretty funny to see my mom's face. Anyway... because if he's anything like me, he won't put a professional effort into something like this (unless he's your dad or something.) Otherwise, he'll probably just say, oh this looks right and ignore the fact that you have an infinite resistor ladder that goes no where.

well it's kind of family thing so ... no problem ! and I'll put it myself on fire just to see that look :lol:

Some side notes:

Advice:

Use tubes instead of solid state. The grace period for tubes is much larger than solid state. This roughly translates into your amp won't blow up when it power ups and you can debug without blowing up too,

..........

ezpz.

well than'x I'll try to keep all that in mind I've already put the Poweramp schematic on peace of paper ,I'll put it here as soon as possible...

ehh and I'm thinking on putting the PreAmp in a separate case in case I want to putt some more effects or change the entire thing ! (and the segnial will go from the Preamp to the Poweramp by a Jack cable )

Ugh you should have all that figured out already. There's no "just in case". When building anything, figure out what you want and do it. Leaving room for significant updates is just a recipe for a mistake if you do decide to make that upgrade. If you feel you want something, put it in your design now. Figure out how to integrate it and get it all. Do not design an amp based on what you can add to it later, because the wiring placing of tube or solid states will have to be reworked. You'll have to recheck the current and often time make edits. It's much more of a hassle for an amateur.

I on the other hand can get away with that, but I also build my own key pad and remote control toaster. With experience you can get more clever, but you're 17 and ignorant, so design it all and don't allow room for upgrades.

here is the power amp I've looked for patterns and ... this is the best thing I can think of making (+ it's simple ! )