$175 Class D amp--120 wpc

jtwrace · « **Reply #1200 on:** 14 Apr 2010, 09:56 pm »

Here are a few more...I have one more to take but I need to finish the part.

Normally I would solder every terminal. I wanted to show that this DIY kit could be done with basic tools.

bprice2 · « **Reply #1201 on:** 14 Apr 2010, 10:05 pm »

But, you did put solder to the RCAs, right?

jtwrace · « **Reply #1202 on:** 14 Apr 2010, 10:09 pm »

Quote from: bprice2 on 14 Apr 2010, 10:05 pm

But, you did put solder to the RCAs, right?

Yes, RCA and XLR.

Yes, 10 is still way less time consuming then every one. My kit was done it less then 2 hrs.

bprice2 · « **Reply #1203 on:** 14 Apr 2010, 10:10 pm »

Quote from: jtwrace on 14 Apr 2010, 10:09 pm

Yes, RCA and XLR.

Thanks...couldn't be certain from the pics.

Nick77 · « **Reply #1204 on:** 14 Apr 2010, 10:44 pm »

Jason
I realize it might take you some time to adjust to the Super, but when your able I am curious if you can detect any differences between xlr and rca.

Steve did you ever try balanced?

jtwrace · « **Reply #1205 on:** 14 Apr 2010, 10:47 pm »

Quote from: Nick77 on 14 Apr 2010, 10:44 pm

Jason
I realize it might take you some time to adjust to the Super, but when your able I am curious if you can detect any differences between xlr and rca.

Perfect timing! I was just messing around with that. In my system, I don't think there was a difference.

Nick77 · « **Reply #1206 on:** 14 Apr 2010, 10:49 pm »

Ahh so it would appear that the new input reciever Tom is using gives the single ended user all the benifit of balanced.

jtwrace · « **Reply #1207 on:** 14 Apr 2010, 10:51 pm »

Quote from: Nick77 on 14 Apr 2010, 10:49 pm

Ahh so it would appear that the new input reciever Tom is using gives the single ended user all the benifit of balanced.

Why the

?

Nick77 · « **Reply #1208 on:** 14 Apr 2010, 10:53 pm »

I guess i dont understand it but i sure am enjoying being able to benifit from the Super while only running rca's.

jtwrace · « **Reply #1209 on:** 14 Apr 2010, 10:58 pm »

Quote from: Nick77 on 14 Apr 2010, 10:53 pm

I guess i dont understand it but i sure am enjoying being able to benifit from the Super while only running rca's.

I'm confused now. sorry.

steve k · « **Reply #1210 on:** 14 Apr 2010, 11:31 pm »

Quote

Steve did you ever try balanced?

I really don't have that opportunity with my setup. Since I'm biamping, everthing from the preamp runs though my active crossover which is single ended. I'd have to use a crossover with balanced inputs and outputs to take advantage of the balanced input of the Super D.

I think what Keith is referring to is Tom told me originally when I demoed the Supers that he thought they sounded a little better using the balanced inputs. It sounds as if the differences are miniscule in your system, JT, which is good news to Keith and I.

steve

ttan98 · « **Reply #1211 on:** 14 Apr 2010, 11:58 pm »

Hi,

I am interested in building one of these(ie 120W/C version) Class D to drive my woofer section. Has anyone here measure the actual output power of this amp driving 8 or 4 ohms? I have read at least half of the postings here haven't found any report.

Thanks.

pjchappy · « **Reply #1212 on:** 15 Apr 2010, 12:05 am »

My journey (finally) is about to really begin. I won't be able to whip out the soldering iron until this weekend.

It is the CDA-254 amp with the heavy-duty power supply. Tom adjusted the gain to 24 dB based on the specs of my preamp. I will be making two of these.

Case -- From jtwrace (a big thanks to him for a great job done!)

IEC -- Furutech FI-10 Gold -- from CryoParts
Binding Posts -- from CryoParts
RCAs -- from CryoParts
XLRs (not shown) -- Neutrik (used, for now, just to fill the holes)
Fuse; Fuse Holder; Power Switch -- RadioShack

Wire:

Hookup -- Silver plated copper wire (may use some shielded Canare cable I have. . .not sure yet. . .suggestions???)
Power -- stranded Belden or misc solid core copper
Power Cable -- Volex 17604

Paul

jtwrace · « **Reply #1213 on:** 15 Apr 2010, 12:34 am »

Quote from: srb on 13 Apr 2010, 01:57 am

Jason, your last photo is blurry and unrecognizeable, and if I didn't know from previous descriptions that it is probably a photo of the power light reflecting off of the shelf....well, I wouldn't know what it was!

However, if that photo were rotated 90 degrees and used as a photo overlay on 2' X 4' acoustic panels behind each speaker (mirror imaged, of course), I think they would be absolutely gorgeous!

Steve

Just for you:

I aim to please.

jtwrace · « **Reply #1214 on:** 15 Apr 2010, 12:36 am »

Quote from: pjchappy on 15 Apr 2010, 12:05 am

Case -- From jtwrace (a big thanks to him!)
Paul

You're very welcome. I'm glad that you like it!

Niteshade · « **Reply #1215 on:** 15 Apr 2010, 12:41 am »

'Tis a cool case!

jtwrace · « **Reply #1216 on:** 15 Apr 2010, 12:44 am »

Quote from: Niteshade on 15 Apr 2010, 12:41 am

'Tis a cool case!

Thanks Blair!

pjchappy · « **Reply #1217 on:** 15 Apr 2010, 12:52 am »

I would have put this together a couple months ago, but I was waiting for jtwrace's custom case. For those of you that don't know, the case comes with all the cut-outs, etc. for the binding posts, RCAs, IEC, fuse holder, power switch and transformer. It also has the ability to take ANY configuration of amp(s) combination(s) you can think of, including using 2 modules. VERY well thought out and HIGHLY recommended. Will not only save you labor, but is also a very clean, simple set-up. Those of you that are wanting a case for your Class Ds, I would jump on this one ASAP.

Even fits the new Super Ds. I'm not a big DIYer, so this case is a big plus for that reason, too.

Thanks again, Jason.

Can't wait to get this thing up and running this weekend.

Now, I just have to really start saving up for the reason I got these amps in the first place. . .a BIG speaker upgrade, in which I am going to actively biamp (maybe even triamp). A couple small toys, bachelor part, wedding, and medical bills have definitely taken their toll. . .

Hoping to swing the speakers in 2 months. . .

Paul

jtwrace · « **Reply #1218 on:** 15 Apr 2010, 02:04 am »

Quote from: pjchappy on 15 Apr 2010, 12:52 am

I would have put this together a couple months ago, but I was waiting for jtwrace's custom case. For those of you that don't know, the case comes with all the cut-outs, etc. for the binding posts, RCAs, IEC, fuse holder, power switch and transformer. It also has the ability to take ANY configuration of amp(s) combination(s) you can think of, including using 2 modules. VERY well thought out and HIGHLY recommended. Will not only save you labor, but is also a very clean, simple set-up. Those of you that are wanting a case for your Class Ds, I would jump on this one ASAP. Even fits the new Super Ds. I'm not a big DIYer, so this case is a big plus for that reason, too.

Thanks again, Jason. Can't wait to get this thing up and running this weekend.

Now, I just have to really start saving up for the reason I got these amps in the first place. . .a BIG speaker upgrade, in which I am going to actively biamp (maybe even triamp). A couple small toys, bachelor part, wedding, and medical bills have definitely taken their toll. . . Hoping to swing the speakers in 2 months. . .

Paul

pjchappy

Thank you very much for the kind comments. It means more then you can imagine.

Bemopti123 · « **Reply #1219 on:** 15 Apr 2010, 02:11 am »

JTwrace, pardon my ignorance, but isn't there any provisions for either a on/off switch in your case or is your amp design always on? I purchased a on/off toggle switch for the amp and I wonder how it would fit in your case. BTW, I am in a quandary about making my ClassD amp with 2 modules, PS module and the transformer.