$175 Class D amp--120 wpc

roymail · « **Reply #880 on:** 17 Mar 2010, 10:33 am »

What about venting? Is it not necessary? Thanks!

pumpkinman · « **Reply #881 on:** 17 Mar 2010, 10:49 am »

Quote from: roymail on 17 Mar 2010, 10:33 am

What about venting? Is it not necessary? Thanks!

There will a 3/4 gap in the across back (which isn't done yet) and 2-2" holes in the bottom to allow air
to circulate from the bottom out the back. More pics as I proceed................Bill

etcarroll · « **Reply #882 on:** 17 Mar 2010, 11:13 am »

That's looking really sharp!

Quote from: pumpkinman on 17 Mar 2010, 10:49 am

There will a 3/4 gap in the across back (which isn't done yet) and 2-2" holes in the bottom to allow air
to circulate from the bottom out the back. More pics as I proceed................Bill

pjchappy · « **Reply #883 on:** 17 Mar 2010, 10:25 pm »

Quote from: steve k on 17 Mar 2010, 03:20 am

Tom is talking about a new Super D class of amps he's working on. He's sending me a demo. He claims it has the same performance of his other IR amps except it projects a larger soundstage.
steve

That's a bit disappointing, because before I ordered my kit, the only differences he had told me were that the Super D amps were going to have balanced inputs and adjustable gain.

My kit is still not assembled, however.

Paul

steve k · « **Reply #884 on:** 18 Mar 2010, 12:37 am »

Yes those are the build differences but Tom was describing the difference in sound. He said the soundstage and imaging were much better than his current line
steve

pjchappy · « **Reply #885 on:** 18 Mar 2010, 12:39 am »

With just those changes, what could make the sound difference?

steve k · « **Reply #886 on:** 18 Mar 2010, 01:09 am »

I think he's done something else that he's not telling.

mjosef · « **Reply #887 on:** 18 Mar 2010, 01:13 am »

I take it, that we are looking at a small price premium for the 'improved' version?

steve k · « **Reply #888 on:** 18 Mar 2010, 01:46 am »

I have no idea but he's practically giving these things away as it is. I keep telling him to put it in a nice case. That's where the money's at.

mjosef · « **Reply #889 on:** 18 Mar 2010, 01:55 am »

Hey, maybe we are the guinea pigs in this, and a full blown product may be his eventual goal.

Bemopti123 · « **Reply #890 on:** 18 Mar 2010, 02:24 am »

Damn, and I got the 1000 watt Kit that I am planning to build already here. Hell, there is no way of knowing what is the difference unless you run the older and newer modules side to side and for what I am thinking about using these for, fullrange woofer duties, it matters not a bit.

Bemopti123 · « **Reply #891 on:** 18 Mar 2010, 02:25 am »

Any news on the enclosure front?

roymail · « **Reply #892 on:** 18 Mar 2010, 03:30 am »

Quote from: mjosef on 18 Mar 2010, 01:55 am

Hey, maybe we are the guinea pigs in this, and a full blown product may be his eventual goal.

I hope you're wrong. As is, this is great for diy, and I hope it continues.

HT cOz · « **Reply #893 on:** 18 Mar 2010, 03:40 am »

Steve,

Does he have any news on the multi-channel project he was said to be working on?

Thanks,
Robert

steve k · « **Reply #894 on:** 18 Mar 2010, 03:44 am »

I haven't heard anything about that. He's really busy so if I get an email or two a week from him, I'm lucky. You might ask him.
steve

jtwrace · « **Reply #895 on:** 18 Mar 2010, 11:33 am »

Quote from: Bemopti123 on 18 Mar 2010, 02:25 am

Any news on the enclosure front?

I have the second prototype complete. It's really nice. Next, are the finished anodized units.

Niteshade · « **Reply #896 on:** 18 Mar 2010, 03:26 pm »

This is a recent steel box prototype. People have been interested in my power supply, so here it is:

1. Dual 25 amp 200v bridge rectifiers in parallel
2. Two 10,000uf 63V capacitors
3. Very short wire runs, for power supply and I/O's
4. Open bottom: I like it! Plenty of ventilation. (Something to think about.)

jman66 · « **Reply #897 on:** 18 Mar 2010, 04:05 pm »

Quote from: Niteshade on 18 Mar 2010, 03:26 pm

4. Open bottom: I like it! Plenty of ventilation. (Something to think about.)

Open bottom - but doesn't heat rise ?

Niteshade · « **Reply #898 on:** 18 Mar 2010, 04:14 pm »

Yes, heat rises. There are convection cells which can cool adequately with a raised open bottom. A metal enclosure draws heat away too. Note that these modules do not produce much heat. The heat sink can be modified to provide more aggressive heat transfer if it's necessary. Side or back forced air cooling can be used as well. If done properly, it will not be noisy at all.

roymail · « **Reply #899 on:** 18 Mar 2010, 05:17 pm »

Nicely done, thanks Blair. Appreciate the pic and information.