Slewmaster - CFA vs. VFA "Rumble"

So from this and other lengthy threads....
the Kypton-C for boards or a kit to make?

What else am I going to need to make this?
I"ve got to put it in some box, and it has to
look okay or keep hearing about it.

It also has to be secure so the my 23
month old little girl won't go kill herself
with this.

I don't need max power from it, but it does need
to sound very good.

Also know this is going to be my first build.
I'm also an almost reformed tube guy...
and maybe y'all can help me overcome that.

Is there a whole kit or can someone help me
with a BOM for this including chassis, etc?

I'm still trying to figure out all the solid state
stuff so some patience please.

Also know, I just have to get this done in a couple
of sittings or maybe a few more...but if I start drifting...
I can get lost.

I'll appreciate it. Would it be worth while starting a new
build thread for it? Maybe other DIYer's might be interested
and won't have to wade through a looong thread.

Cheers
 
So from this and other lengthy threads....
the Kypton-C for boards or a kit to make?

What else am I going to need to make this?
I"ve got to put it in some box, and it has to
look okay or keep hearing about it.

It also has to be secure so the my 23
month old little girl won't go kill herself
with this.

I don't need max power from it, but it does need
to sound very good.

Also know this is going to be my first build.
I'm also an almost reformed tube guy...
and maybe y'all can help me overcome that.

Is there a whole kit or can someone help me
with a BOM for this including chassis, etc?

I'm still trying to figure out all the solid state
stuff so some patience please.

Also know, I just have to get this done in a couple
of sittings or maybe a few more...but if I start drifting...
I can get lost.

I'll appreciate it. Would it be worth while starting a new
build thread for it? Maybe other DIYer's might be interested
and won't have to wade through a looong thread.

Cheers

There is a build thread going already. http://www.diyaudio.com/forums/solid-state/260268-slewmaster-builds-46.html#post4273678 There's lots of support here or there. You will need input boards, Output boards, a supply board or capacitors, a transformer, a chassis and it would be wise to add a protection board and softstart circuit depending on the size of the transformer.
 
Okay guys,
I understand wanting to have a protection board for those times when something goes wrong like someone shorting the outputs on the amplifier and such. Now where I want to put the amp inside the speaker enclosure and there is no chance of shorting the output is there a simpler way to protect the amp? A simple fuse protection is what I am use to with most commercial amps and I understand that isn't the best or even a good solution but the amp protection boards I am seeing seem more complex than the amp itself.

On another subject, with the self powered speakers I have no idea what is going to be connected as a source. Someone may use a device with perhaps 1v output and someone else may have something with 2v or more. Is there a way to control or limit the input voltage so the max output of the amp can never go above a set limit?
 
Okay guys,
I understand wanting to have a protection board for those times when something goes wrong like someone shorting the outputs on the amplifier and such. Now where I want to put the amp inside the speaker enclosure and there is no chance of shorting the output is there a simpler way to protect the amp? A simple fuse protection is what I am use to with most commercial amps and I understand that isn't the best or even a good solution but the amp protection boards I am seeing seem more complex than the amp itself.

On another subject, with the self powered speakers I have no idea what is going to be connected as a source. Someone may use a device with perhaps 1v output and someone else may have something with 2v or more. Is there a way to control or limit the input voltage so the max output of the amp can never go above a set limit?
It's still a good idea to have some sort and overheat or overcurrent protection as well as some DC offset protection. If an output device overheats and runs away it would be better to shut everything down than melt everything.

I've never noticed it myself but some of these inputs board LEDs actually shut off at clipping so that could be useful to monitor input levels an possibly be used to attenuate input levels.
 
Protection boards look a little complex but actually are much simpler than the amplifiers themself. They are pretty much digital so everything is either off or on. No worries of oscillation or overshoot, ect. With the availability of cheap microcontrollers it's quite easy to custom design a circuit to do just about anything with the right coder. My next version of Valery's board will be SMT with a USB connection on it for easy programming and possibly LAN as well.
 
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JW,
That sounds interesting. I would love to see that. Something simple that does the job without getting as large as the amplifier. I'm still thinking about usb and having to add a dsp to allow digital signals. I was originally looking at some CSR Bluetooth monolithic solutions. I should have stayed in those electronics classes in college!
 
JW,
That sounds interesting. I would love to see that. Something simple that does the job without getting as large as the amplifier. I'm still thinking about usb and having to add a dsp to allow digital signals. I was originally looking at some CSR Bluetooth monolithic solutions. I should have stayed in those electronics classes in college!

You've got more training than me. I just had electronics class in high school and that was when digital meant gates😱

We've been discussing adding a Beaglebone or Raspberri Pi to the protection system for datalogging. There might be a good addition for Runeplayer or some other form of internet radio player for your system. I've had quite a bit of experience with Sonos systems. If something could be implemented that smoothly it would definitely be a big plus for the system.
 
JW,
I have been watching the embedded device thread and that is so over my head, still not sure exactly what it is they are doing with all the bits and pieces. My electronics teacher in high school gave me an F for doing all my projects in two weeks, he was still teaching vacuum tube electronics. He gave me an A in sound crew and had me rewire the entire auditorium com system, go figure.
 
KHM, S4G, JW,

Thanks, let me look around a bit and see what I've got, what I need,
and where I should be.

If we are looking for output protection, I can already hear the
collective grown...as I ask, are output/isolation transformers available that
would work for reasonable cost/weight/size?

There might be some other folks who might want to work
on a Kypton-C also, if so, we might be able to get a group
buy on various parts. Let me go look over at the other slead
 
JW,
I have been watching the embedded device thread and that is so over my head, still not sure exactly what it is they are doing with all the bits and pieces. My electronics teacher in high school gave me an F for doing all my projects in two weeks, he was still teaching vacuum tube electronics. He gave me an A in sound crew and had me rewire the entire auditorium com system, go figure.

I guess it's all what you are used to. I've been using that type of electronics for years in the vehicles I build so I can hack and slash my way through that quite easily. This analogue audio is a totally different animal.
 
JW,
I have been watching the embedded device thread and that is so over my head, still not sure exactly what it is they are doing with all the bits and pieces. My electronics teacher in high school gave me an F for doing all my projects in two weeks, he was still teaching vacuum tube electronics. He gave me an A in sound crew and had me rewire the entire auditorium com system, go figure.

Don't you hate that? Why cause you could get the job done quickly and
probably close to or right the first time? Maybe he couldn't think or work that
fast? When it really counted and mattered you got the call.

Now, in that ELE class where you got dinged for everything in two weeks....
...what did you learn from that class that you applied to the sound crew?
 
You've got more training than me. I just had electronics class in high school and that was when digital meant gates😱

We've been discussing adding a Beaglebone or Raspberri Pi to the protection system for datalogging. There might be a good addition for Runeplayer or some other form of internet radio player for your system. I've had quite a bit of experience with Sonos systems. If something could be implemented that smoothly it would definitely be a big plus for the system.


I would not want my system that connected to the "internet of things".

I have strong feelings on this topic ....

I'm not "old fashioned" - I'm actually the one who can figure out the
android mobile devices for my wife and kids (they are lost).
But, I actually have no mobile devices personally.

I seen sonos , overpriced bluetooth speakers 🙄 I'll run my
sources through a wire (or optic cable) .. thank you.

OS
 
I would not want my system that connected to the "internet of things".

I have strong feelings on this topic ....

I'm not "old fashioned" - I'm actually the one who can figure out the
android mobile devices for my wife and kids (they are lost).
But, I actually have no mobile devices personally.

I seen sonos , overpriced bluetooth speakers 🙄 I'll run my
sources through a wire (or optic cable) .. thank you.

OS

Sonos Connect with Flac files (Diesel) run digitally into a good amplifier sounds pretty good. It also acts as a music server for any music you have stored anywhere on your network. I wouldn't use their crappy little amp version myself but I know a few people who use them for their kitchens and on the deck.