Jump to content

Recommended Posts

Once we got one built up and held it up by its ends it bowed in the center due to its weight! While funny, we had to redesign the base plate, we changed it from .120" thickness 6061 to .190" thickness, we also added the mounting feet as part of the base plate. Problem solved, another pound or so added lol. Time to build up some new baseplates

1%2013_zps6leg9tpt.jpg

1%209_zpsoaqryih2.jpg

  • Like (+1 Rep) 2
Link to comment
Share on other sites

Next revision of PCBs ordered and enough parts to build 4 complete units. It was over 3000 components that needed to be soldered.

1%20156_zpsy4cjxntz.jpg

1%20151_zpsf9oa0vxv.jpg

1%20159_zpsdfkslnjn.jpg

1%20161_zpscieskevs.jpg

1%20162_zps5vufgjto.jpg

One part at a time...

1%20153_zpsdec6rvvn.jpg

1%20152_zpseghtuiqv.jpg

Losing my mind after 800 components....

1%20150_zpsn16olkiq.jpg

Finally all the big parts are done after 2 or 3 days. Now to Juan for the smaller stuff, my eyes and soldering skills are not up to the task anymore.

1%20149_zpsa3vcflh2.jpg

  • Like (+1 Rep) 2
Link to comment
Share on other sites

After we got one PCB up and running we started doing thermal testing again (beating the crap out of it). Remember a few posts back we weren't satisfied with the isolator material we were using? Yeah, this happened. You can see the tan-ish colored material. It is a phase change material that is supposed to be awesome, it was pretty awesome, just not awesome enough.

1%20179_zpsmu7wvb1p.jpg

Time to go home for the day now that the entire building smells like blown up MOSFETs. The search continues for a better material.

After searching around we discovered Alumina Al203. It is a bad ass ceramic that will do both jobs excellently (electrical isolation, yet fast heat transfer). Learn about Alumina here http://www.morgantechnicalceramics.com/materials/alumina-al203

Edited by TonyD'Amore
  • Like (+1 Rep) 1
Link to comment
Share on other sites

As it turns out, this stuff is available for exactly what we want to use it for. You can see it here in this photo (as well as all the hardware we ordered from McMaster).

1%20148_zpsbyjntca6.jpg

1%20147_zpsz61r1es1.jpg

1%20146_zpsdhlxescz.jpg

1%20145_zps39tikds6.jpg

1%20144_zpsn4rwm0ys.jpg

Back to building and testing using the ceramic isolators.

1%20143_zpsvvfpbqzy.jpg

1%20135_zpsb4veyb13.jpg

Thermal conductivity (heat transfer) is on point now!!!

Edited by TonyD'Amore
  • Like (+1 Rep) 2
Link to comment
Share on other sites

After setting the bias controls and doing a bunch of testing, everything looked fantastic. We just got the demo car back this same night, time to remove the placeholder baseplates that we gave the shop and replace them with the real thing!

1934609_10205448359468774_64570058405496

1%20138_zpsauv7vdpc.jpg

She's like 2 1/2 now

ceeedb8c-5967-4ae4-9c96-2612e3af35c2_zps

Now repeat the process and build another amp lol

1%20165_zpsqolhldpy.jpg

993875_10205489421975311_283065880037112

10645010_10205489299612252_6910535549052

A little orange peel on the paint (it looks worse here than in life for some reason) I blame the cold booth and the rush we were in. Production pieces will look better!

If I find more pics I'll add them. Thanks for following along. The result was better than we hoped for, everyone who has heard these amps has been impressed. They are VERY dynamic and fast, the dynamics of the music come through producing a very "real" or "live" sound.

Tony D

  • Like (+1 Rep) 3
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   0 Members, 0 Anonymous, 246 Guests (See full list)

    • There are no registered users currently online
×
×
  • Create New...