$175 Class D amp--120 wpc

steve k · « **Reply #3000 on:** 9 Jan 2012, 01:30 pm »

Beautiful work, uillean! Very clean and simple.

steve k

uillean · « **Reply #3001 on:** 9 Jan 2012, 05:58 pm »

Thanks...
For Ajani, the size of the box is :295x330x70mm (without feet)
Just an idea of the size :

The original transformer was too hight to fit the box and Tom from ClassD audio was very helpful and found a special low profile one. Great service and easy contact...

JL

corndog71 · « **Reply #3002 on:** 9 Jan 2012, 06:58 pm »

Quote from: MX48 on 5 Jan 2012, 06:44 pm

Oh yes.
OK! I'll get on it. Quit bustin' my B@@ls .
The ones I am referencing are the USB, I wouldn't know where to start with those.

Moto

*EDIT: This is the correct version*

Barry_NJ · « **Reply #3003 on:** 9 Jan 2012, 07:19 pm »

corndog71, the color coding on the data portions of the images you posted contradict each other...

corndog71 · « **Reply #3004 on:** 9 Jan 2012, 09:03 pm »

Quote from: Barry_NJ on 9 Jan 2012, 07:19 pm

corndog71, the color coding on the data portions of the images you posted contradict each other...

Huh...

How 'bout that.

What's going on here?

Here's the wiki

http://en.wikipedia.org/wiki/USB

Barry_NJ · « **Reply #3005 on:** 9 Jan 2012, 09:12 pm »

Cool, thanks for the quick clarification!

steve k · « **Reply #3006 on:** 10 Jan 2012, 02:14 am »

Here's a CDA-224 that I built in a Parmetal case for my girlfriend paired up with a Nohr ACA2B preamp. Nice sounding, economical combo. They're driving a pair of Insignias with GR Research mods.

krikor · « **Reply #3007 on:** 12 Jan 2012, 06:30 pm »

My SDS-450 mono amps are up and running again - and thus far no overheating, no shutdowns after listening for a few hours last night. Tom sent me a couple sets of heatsink "outriggers" (as I call them) or "pontoons" (as he calls them) to increase the thermal mass and keep the amps running cool. Installation involved removing the three screws holding the existing heatsink, sliding the mounting plate underneath the heatsink and pushing the spacers out, then reinstalling the three screws and mounting the pontoons. Not sure if other the other models have the heatsinks mounted on spacers to separate them from the circuit board which is necessary for this mod to work.

The pontoons were a bit taller than the circuit board standoffs, so I used some extra nuts to raise the height of the board yet keep the pontoons in contact with the chassis bottom for additional heat dissipation. If heat still seems high, I may make some heatsink fin extensions with 1/8" thick by 2" aluminum bar stock.

More testing to come this weekend over longer period of time... man, these amps sound good!

I.Greyhound Fan · « **Reply #3008 on:** 12 Jan 2012, 06:42 pm »

I have a question about using a metal case. I am going to put my CDA-254 in a Par Metal case. Do I need to place a ground to the case?
Thanks,

Larry

I.Greyhound Fan · « **Reply #3009 on:** 12 Jan 2012, 06:44 pm »

If I do need to ground it, where do I pick it up from?

corndog71 · « **Reply #3010 on:** 12 Jan 2012, 10:35 pm »

If I remember correctly one of the mounting screw holes is ground. I know when mine were mounted they magically connected to chassis ground.

Make sure you're RCA inputs are isolated from the chassis.

Vedder323 · « **Reply #3011 on:** 13 Jan 2012, 05:35 am »

Which of the amp kits would be the best match with the Anthony Gallo 3.1s?

Redefy Audio · « **Reply #3012 on:** 13 Jan 2012, 10:55 am »

looking forward for your impression krikor

cheers
henry

stigs · « **Reply #3013 on:** 17 Jan 2012, 11:41 pm »

Thank you Krikor for posting your success of getting a solution for the thermal problem that you had with your SDS-450 amps. My SDS-254 amps are physically identical to yours and the spacing is the same. From you photos it is easy to see the simple modification to the amps. I'm sure this will work for me as well.
Thanks again Stigs.

siava1018 · « **Reply #3014 on:** 19 Jan 2012, 04:19 pm »

What size fuse are you guys using on your battery amps? The 12v adapter has 2 20amp mini fuses in it, so im guessin about a 50amp fuse?

firedog · « **Reply #3015 on:** 31 Jan 2012, 09:08 am »

Inputs on SDS 470:

Is there any reason for me not to connect 2 preamps to my amp, one to the XLR input and one to the RCA? Obviously not planning on having both preamps on at the same time.

Thanks

Nick77 · « **Reply #3016 on:** 31 Jan 2012, 11:25 am »

Quote from: siava1018 on 19 Jan 2012, 04:19 pm

What size fuse are you guys using on your battery amps? The 12v adapter has 2 20amp mini fuses in it, so im guessin about a 50amp fuse?

I have the SDS254, Tom mentioned 6 amp fuse would be good.

Barry_NJ · « **Reply #3017 on:** 31 Jan 2012, 02:41 pm »

Quote from: Vedder323 on 13 Jan 2012, 05:35 am

Which of the amp kits would be the best match with the Anthony Gallo 3.1s?

I've found the 3.1s to love power, so I'd recomend the most powerful amp that can handle the 4-Ohm load they present.

corndog71 · « **Reply #3018 on:** 31 Jan 2012, 04:06 pm »

Quote from: firedog on 31 Jan 2012, 09:08 am

Inputs on SDS 470:

Is there any reason for me not to connect 2 preamps to my amp, one to the XLR input and one to the RCA? Obviously not planning on having both preamps on at the same time.

Thanks

I wouldn't recommend it. Unless you add switches at the amp to keep them separate.

siava1018 · « **Reply #3019 on:** 31 Jan 2012, 07:55 pm »

6amp? that seems small. I also have my dodd buffer and dac on the same supply and they both use 2a fuses.