Amp Build Parts Trickling In...

[tomzarbo]

Outputs for Speakers, Lepai amp for size comparison only:




Muhahahahahaha!

These are actually Mad's version, I like the Knurled knobs on these a little better than PE's. The knobs are Quarter-size! A big amp needs big hook-ups, right! :D

Instead of speaker cables, I should start thinking about using jumper cables.

TomZ

[lhwidget]

Re: Amp Build Parts Trickling In...

Welding cables?

What's going on the other side of those?

[Wolf]

Re: Amp Build Parts Trickling In...

I'd use these.... ;):D
Wolf

[tomzarbo]

Re: Amp Build Parts Trickling In...

Welding cables?

What's going on the other side of those?

Two 550 watt @4 ohm amp modules from Connexelectronic: http://connexelectronic.com/product_...kedtkou1k2ha41

powered by one of these:

http://connexelectronic.com/product_info.php/products_id/126?osCsid=1a5ri65p88abkedtkou1k2ha41

with a little bit of bling on the front:

Click on pic to play video...

I'd use these.... ;):D
Wolf

Ahhh, they look about right! :D

It'll probably take me a year to finish this project, I hope anyway. I want to take my time and savor every little detail. BIG alum. knob for the volume, nice switches and subtle lighting, etc. Hope my funds hold out!

TomZ

[lhwidget]

Re: Amp Build Parts Trickling In...

It'll probably take me a year to finish this project, I hope anyway. I want to take my time and savor every little detail. BIG alum. knob for the volume, nice switches and subtle lighting, etc. Hope my funds hold out!

TomZ

I hope so too.

Now this looks like big fun!

Remember Mark's (WWWJD) famous volume knob on his chip-amp?

[tomzarbo]

Re: Amp Build Parts Trickling In...

I hope so too.

Now this looks like big fun!

Remember Mark's (WWWJD) famous volume knob on his chip-amp?

Was that the clear one with the blue glow behind it? I'm going to search for that once I get home. That's one of the amp builds that started to make me interested in making one of my own. You don't see too many amps on this site for some reason.

TomZ

[ameuba10]

Re: Amp Build Parts Trickling In...

Where did you find that visual equalizer?

[tomzarbo]

Re: Amp Build Parts Trickling In...

Where did you find that visual equalizer?

I ordered it as a kit from Youritronics:

http://www.youritronics.com/forum/audio-spectrum-analyzer-v2-1-t127.html

It uses surface mount technology, not the bigger through-hole stuff. I actually botched up the mother board and had to order another, but it works now very nicely. It's about 8" wide, so it's not small. It can be ordered with red or blue LED's, the Blue ones cost a lot more.

TomZ

[WWWJD]

Re: Amp Build Parts Trickling In...

Tom,
That's gonna be a beast!! I'll be watching fo sho.

[tomzarbo]

Re: Amp Build Parts Trickling In...

Just ordered a big ol' hunk of aluminum round bar to make into a volume knob. 3" wide by 1 1/4" deep. Should make a hefty-feeling volume knob.

Here's a preliminary mock-up:



I think I'll use the switch I have my heart set on to power a solenoid to turn the unit on/off. The switch I have is rated 25 amps at 24 VDC, but it gives no rating for 120V. It'll give me a chance to mess around with solenoids and such.

Man, what fun, and I'm only at the thinking about it stage!

TomZ

[tomzarbo]

Re: Amp Build Parts Trickling In...

Tom,
That's gonna be a beast!! I'll be watching fo sho.

Mark, I was looking at the pics for your gainclone amp build and was wondering how you did the printing for the back of your amp? Where it says USB, Input, etc. Yours was one of the DIY amps that really sparked an interest in building one of my own. Man, that's Nice stuff.

TomZ

[WWWJD]

Re: Amp Build Parts Trickling In...

Tom,
I employed Front Panels Express; I think the whole process only took a few weeks. The prices weren't too bad either, considering they were one-off parts.

http://www.frontpanelexpress.com/

Just had to plan way ahead. Drew all the components out to scale and did a layout before drawing up the panels.



Pretty much guaranteed myself that everything would shoe-horn in this way. If you download their Front Panel Designer software, you can play around with the front and rear panel drawings I did. If you save and change the file extensions to the two attached files named "Rear 2a.pdf" and "Front 2a.pdf" to .fpd files, they'll open up. PE wouldn't let me upload the .fpd so I had to fake it out.

The whole process is really nice; the quality of the parts was perfect and exactly as specified. If I recall correctly, the three parts on the final build wound up being around $80 shipped. One of the neat things about the software is the quote button; you can draw everything up and see what they're going to charge you for the part as drawn. This definitely kept me from screwing myself, and got a feel for what costed more and what was economical (corner rounds, engravings, material thickness, anodizing, etc.). It all adds up.

That's gonna be a sharp looking piece! I like your mock-up; it's clean. And one of the things I really like about mine is the heft of the volume knob; it just does something psychological to go to crank the knob and feel the inertia of it. (Tim Allen grunt inducing mass). I think you're gonna love it.

[tomzarbo]

Re: Amp Build Parts Trickling In...

Tom,
I employed Front Panels Express; I think the whole process only took a few weeks. The prices weren't too bad either, considering they were one-off parts.

http://www.frontpanelexpress.com/

Just had to plan way ahead. Drew all the components out to scale and did a layout before drawing up the panels.



Pretty much guaranteed myself that everything would shoe-horn in this way. If you download their Front Panel Designer software, you can play around with the front and rear panel drawings I did. If you save and change the file extensions to the two attached files named "Rear 2a.pdf" and "Front 2a.pdf" to .fpd files, they'll open up. PE wouldn't let me upload the .fpd so I had to fake it out.

The whole process is really nice; the quality of the parts was perfect and exactly as specified. If I recall correctly, the three parts on the final build wound up being around $80 shipped. One of the neat things about the software is the quote button; you can draw everything up and see what they're going to charge you for the part as drawn. This definitely kept me from screwing myself, and got a feel for what costed more and what was economical (corner rounds, engravings, material thickness, anodizing, etc.). It all adds up.

That's gonna be a sharp looking piece! I like your mock-up; it's clean. And one of the things I really like about mine is the heft of the volume knob; it just does something psychological to go to crank the knob and feel the inertia of it. (Tim Allen grunt inducing mass). I think you're gonna love it.

I never knew that site existed, or that any company would be willing to do such nice work for one-off designs! Thanks for that. I was determined to do all the fabrication work myself for good or bad. I may be able to make just a thinner veneer-type front panel 1/16th or so thick and laminate it to a meatier panel right behind it as the structural part of the front panel. That gives me a lot to think about. I'll have to get things mostly done before I proceed with ordering from them if I do.

TomZ

[neildavis]

Re: Amp Build Parts Trickling In...

Just ordered a big ol' hunk of aluminum round bar to make into a volume knob. 3" wide by 1 1/4" deep. Should make a hefty-feeling volume knob.

TomZ

If that doesn't work out, I've still got that one I offered previously. It's 2-3/8" by 3/4", so it's not quite as big, but it's already drilled, black anodized and there is a bevel that serves as an indicator. Just PM an address and I'll mail it off.

[foxfire3]

Re: Amp Build Parts Trickling In...

Two 550 watt @4 ohm amp modules from Connexelectronic: http://connexelectronic.com/product_...kedtkou1k2ha41

powered by one of these:

http://connexelectronic.com/product_info.php/products_id/126?osCsid=1a5ri65p88abkedtkou1k2ha41

with a little bit of bling on the front:

Click on pic to play video...




Ahhh, they look about right! :D

It'll probably take me a year to finish this project, I hope anyway. I want to take my time and savor every little detail. BIG alum. knob for the volume, nice switches and subtle lighting, etc. Hope my funds hold out!

TomZ

A couple of newbie questions:

Is that some type of switching power supply?

Do you still use a large transformer with that power supply?

How much signal is need to drive LM49810 modules?
Will a 2 volt signal from a device drive it or will you have to use another stage to drive the modules?

Thanks...