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Old 11th April 2019, 02:55 PM   #4641
torb is offline torb  Finland
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Join Date: Aug 2014
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Originally Posted by Eric View Post
Nice construction, torb! Depending on heat production, you might need to make the holes in the bottom of your chassis larger. My first amp (a40) has an entirely wooden chassis and I perforated the bottom with holes that ultimately needed to be made larger so air would actually flow. I also had to put a spacer under the top lid for more airflow.

Are those speakers a Troels Graveson quarter wave design?
Thanks! I measured 35 C with a kitchen thermometer inside the chassis after an hour of use. It feels like a nice summer day=)

Checked out you homepage, cool builds!

They are his DTQWT mk2, built in 2014. The vfet plays them very well, the only thing missing is a bit of authority they project with more powerful amps.
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Old 11th April 2019, 05:43 PM   #4642
Eric is offline Eric  United States
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Pictures of your diy Pass amplifier
Glad to hear your internal temp is good. My webpage needs a bit of attention - my employer pulled the plug on faculty web pages a few months ago, so I've had to migrate things to a google site and haven't fully restored all of my work yet.

I've been eyeballing that DTQWT design for a while now thinking it might be a nice build. I'm trying to find a place in the house for "another" set of speakers... Thanks for sharing your impressions with the vfet2 and speaker combo!
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Old 11th April 2019, 06:24 PM   #4643
torb is offline torb  Finland
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Join Date: Aug 2014
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Originally Posted by Eric View Post
I've been eyeballing that DTQWT design for a while now thinking it might be a nice build. I'm trying to find a place in the house for "another" set of speakers... Thanks for sharing your impressions with the vfet2 and speaker combo!
The vfet is by far the best amp I have heard with them. They are nice, the only downside is the bass, which is supposed to be improved in the mk3.

best regards
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