Hello,
I would like to build a solid state amp to go with the speakers I'm building.
My specifications for it is that it has about 30watt per channel at 8ohms. My plan is to have the input then a preamp with a volume knob that will control the signal going to the main amp and the sub out.
So really only about two knobs unless more is easy.😱
I don't know if I should by a kit or build it myself. It should be around $120 tops. Thats why I am thinking maybe it's better if I build it.😀
so if anybody knows designs that work well and slightly relate to my specifications...
thanks.
Hans
I would like to build a solid state amp to go with the speakers I'm building.
My specifications for it is that it has about 30watt per channel at 8ohms. My plan is to have the input then a preamp with a volume knob that will control the signal going to the main amp and the sub out.
So really only about two knobs unless more is easy.😱
I don't know if I should by a kit or build it myself. It should be around $120 tops. Thats why I am thinking maybe it's better if I build it.😀
so if anybody knows designs that work well and slightly relate to my specifications...
thanks.
Hans
Last edited:
I think you should provide some more information.
Will it be a 2.1 system? Already has amp for sub?
Also the speakers project would be welcome.
And maybe a chip amp will be the simplest choice...
Kindest regards,
Max.
Will it be a 2.1 system? Already has amp for sub?
Also the speakers project would be welcome.
And maybe a chip amp will be the simplest choice...
Kindest regards,
Max.
It will be a 2.1 system yes. both speakers and the sub are using passive radiators. It will have two fullrange 3" speakers. Thats what this amp will be powering. The sub will have its own 100watt amp. I have the speakers question under fullrange.
The design I am using for the sub is Wyse
except my will have a different plate amp on the back.
The tools I currently have are a soldering iron, an old drill, Allen wrenches and such. If I need other tools I can see what I can steal from my friends😀.
I will maybe be using a design similar to this Hi resolution images of the W3-871S Monitors
with different drivers (same brand, but higher end) and two PR's.
here's a link to my fullrange post
http://www.diyaudio.com/forums/full-range/168424-fullrange-cabinet-design-help.html
peace,
hans
The design I am using for the sub is Wyse
except my will have a different plate amp on the back.
The tools I currently have are a soldering iron, an old drill, Allen wrenches and such. If I need other tools I can see what I can steal from my friends😀.
I will maybe be using a design similar to this Hi resolution images of the W3-871S Monitors
with different drivers (same brand, but higher end) and two PR's.
here's a link to my fullrange post
http://www.diyaudio.com/forums/full-range/168424-fullrange-cabinet-design-help.html
peace,
hans
Well, if you feel being skilled to manage to build your own amp, this is the right place.
Otherwise.... buy a kit!
Being able to do all the hard work by yourself, projects will fall here in a glance.
Otherwise.... don't expect much from Solid State folks.
Even though, people will try to help you.
Peace,
Max.
(sorry for rough English)
Otherwise.... buy a kit!
Being able to do all the hard work by yourself, projects will fall here in a glance.
Otherwise.... don't expect much from Solid State folks.
Even though, people will try to help you.
Peace,
Max.
(sorry for rough English)
I think I'm up to trying to build myself. It will definitely give me a better sound for a lower price. Now to find 
some schematics (in this area suggestions are helpful)😀
peace,
hans
some schematics (in this area suggestions are helpful)😀 peace,
hans
Oh and I guess I wouldn't mind tubes, but just not too many. (the more you have the more expensive it tends to be.😱
I don't think I can change my thread title though.🙄
cheers,
Hans
I don't think I can change my thread title though.🙄
cheers,
Hans
if you choose any type of solid state amplifier, whether chipamp or discrete or hybrid of chip driver & discrete output stage, ensure it is AC coupled NOT DC coupled.
This requires a DC blocking capacitor in the input feed and if non-inverting a DC blocking cap in the Negative FeedBack line. I don't recommend an inverting design for a newish builder.
This requires a DC blocking capacitor in the input feed and if non-inverting a DC blocking cap in the Negative FeedBack line. I don't recommend an inverting design for a newish builder.
Hi
How far along is your electronic design skills? If you choose to build your own amp from scratch and not use a pre-designed and proven kit, you will most likely need at least a DMM, O-scope, and function generator. If the sub is powered by only 100W, the other speakers are not going to need nearly that much power. A chip amp solution might be the way to go.😉
How far along is your electronic design skills? If you choose to build your own amp from scratch and not use a pre-designed and proven kit, you will most likely need at least a DMM, O-scope, and function generator. If the sub is powered by only 100W, the other speakers are not going to need nearly that much power. A chip amp solution might be the way to go.😉
Here's a Velleman kit with 2x40WRMS into 8 ohms:
Velleman Inc.
Don't forget you need a heatsink...
Here's a PSU board from the same company, you'll need to buy a transformer too...
Velleman Inc.
You should be able to find a distributor near you, they're a US company.
I haven't built this particular kit, but I have built Velleman kits in the past, they're straightforward and pretty cheap to buy here in the UK anyway.
w
Velleman Inc.
Don't forget you need a heatsink...
Here's a PSU board from the same company, you'll need to buy a transformer too...
Velleman Inc.
You should be able to find a distributor near you, they're a US company.
I haven't built this particular kit, but I have built Velleman kits in the past, they're straightforward and pretty cheap to buy here in the UK anyway.
w
I would use a shematic that is reliable. So technically not designing my own amp. So it would be predesigned and tested. I only need 30 watts per speaker so nothing major.
to Wakibaki is the Velleman stuff good quality? I had looked at maybe getting one, but I wasn't sure how good it would sound.
peace,
Hans.
to Wakibaki is the Velleman stuff good quality? I had looked at maybe getting one, but I wasn't sure how good it would sound.
peace,
Hans.
I can't speak for this particular kit, but it's probably a good place to start. I've just finished assembling a different one for a sub. I have numerous components available, and PCB fabrication facilities, I still bought one of these kits, 'cause it was easy and cheap.
The kits have clearly labelled boards, with the components assembled into ordered strings which makes it less likely you will make a mistake in assembly. Believe me, I have stuffed thousands of boards, all it takes is for someone to speak to you at the wrong moment and when you switch it on you have a pile of junk.
Best to start with something like this, get a working project under your belt, and then move on to something more demanding.
w
The kits have clearly labelled boards, with the components assembled into ordered strings which makes it less likely you will make a mistake in assembly. Believe me, I have stuffed thousands of boards, all it takes is for someone to speak to you at the wrong moment and when you switch it on you have a pile of junk.
Best to start with something like this, get a working project under your belt, and then move on to something more demanding.
w
It sounds fine.
The differences between speakers are much, much greater than the differences between amplifiers, so much so that they swamp the differences between amplifiers.
If you read the threads here you will find amplifiers costing $2Ok whose designs are being described as incompetent by people whose expertise is obvious, and whose opinions are cross-checked by hundreds if not thousands of readers. If the kit I have posted a link to is poor, lots of people will be only too glad to point it out. A kit sold in the hundreds by a manufacturer like Velleman is unlikely to be unsatisfactory.
Stop fretting about the sound and get the confidence that a successful build will give you.
w
The differences between speakers are much, much greater than the differences between amplifiers, so much so that they swamp the differences between amplifiers.
If you read the threads here you will find amplifiers costing $2Ok whose designs are being described as incompetent by people whose expertise is obvious, and whose opinions are cross-checked by hundreds if not thousands of readers. If the kit I have posted a link to is poor, lots of people will be only too glad to point it out. A kit sold in the hundreds by a manufacturer like Velleman is unlikely to be unsatisfactory.
Stop fretting about the sound and get the confidence that a successful build will give you.
w
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