Class D Amp Photo Gallery - Page 144

Wardsweb · 2nd August 2019, 04:54 PM

The chassis came from Aliexpress

WA2 Whole Aluminum Chassis Can Do Tube Amp or Amplifier Shell DIY Box Silver & Black-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

chermann · 2nd August 2019, 05:21 PM

Thanks

zorz · 5th August 2019, 11:58 PM

I just built a dual-mono amp this weekend with the excellent ICEPower 200ASC + 200AC boards and a Ghent Audio chassis.

Overall the experience was very smooth outside of having to mess around with soldering the binding posts. I used 123toid's video as a starting reference, but there were a few things I had to look up as he didn't go through all the details in his video.

After building it I then hooked them up to my pair of (admittedly hard to drive) Amiga MT's and compared them to my Emotiva A-300, with the MC-700 as preamp. Here are my impressions:

- The clarity was excellent. I noticed a lot of details that were harder to discern before, such as a dropped drumstick at the end of a track or a cough from a band member. Just lots of little things that were present before but not as revealed jumped out at me.
- The bass wasn't quite as full, though it did not lack in the clarity department. The Emotiva really wins here with just gobs of punchy, accurate bass. However, the ICEPower boards did deliver with reach (was able to hit cleanly at 35Hz) and not being too forward.

Overall, this was quite worthwhile and I'm going to be using this dual mono block as 1/2 of an active system using the Tang Band W6-2313 coaxial driver. I'm building a 50ASX 2-channel amp for the tweeters next and using MiniDSP as crossover.

The Class-D bug bit hard...I'm kind of glad!

matt_garman · 12th August 2019, 11:10 PM

zorz - looks great! One small suggestion: your AC power lines (looks like red and black wires) should be twisted. Since you're using connectors (rather than soldered wires), should only take a few minutes to twist those.

zorz · 13th August 2019, 12:48 AM

Quote:

Originally Posted by matt_garman

zorz - looks great! One small suggestion: your AC power lines (looks like red and black wires) should be twisted. Since you're using connectors (rather than soldered wires), should only take a few minutes to twist those.

Lol - yeah, forgot about that little tidbit! Thanks for the reminder

kees52 · 13th August 2019, 10:54 AM

This child needs in time to be build, a multilevel version, -110db HD.

But wheere I can order the case for it?

The multilevel has a special feedback system, who correct the lowpass completely.

zorz · 14th August 2019, 11:39 PM

Quote:

Originally Posted by kees52

This child needs in time to be build, a multilevel version, -110db HD.

But wheere I can order the case for it?

The multilevel has a special feedback system, who correct the lowpass completely.

While I'm not 100% sure of what you're referring to here, I do know that cases can be ordered from Ghent Audio as well as eBay.

Bare · 12:11 AM

As small aside; Ebay Clone Dact type stepped (SMD) Attenuators are surprisingly good items.
Better imo than than MY Ebay Alps blu pots ..of which most All available are clones these days. Stickers/claims notwithstanding.
Alps hasn't mfg'd a blu pot for years

PS Those ICE things look like they've been bombed by seagulls... too much White yuck.

baszek · 01:14 PM

I have made cap mod of my small tpa3116 amp.
Big ones under pcb are some chinese 4700uF (probably fakes nichicons but comments on alliexpress were ok).
On the front of pcb I have also changed caps for some JAMICON 1000uF (bought in local store). All caps are Low ESR.
After change I have noticed that bass is a little bit better.
The next mod I will do: add some small radiator on the back of pcb under tpa3116 --> when sometimes I turn volume loud radiator is really hot :-) for daily use it is ok, but probably not for party mode :-)
ImgBBB - Upload Image — Free Image Hosting
ImgBBB - Upload Image — Free Image Hosting
ImgBBB - Upload Image — Free Image Hosting

Amps work with khadas tone board DAC + POLK AUDIO S15 speakers :-) I searching right now for some quality tpa3116 2.1 to add maybe subwoofer for movies.

onionhead · 21st August 2019, 04:51 PM

Seems a pretty straight forward build and looks very tidy inside. Thanks for sharing you have given me some inspiration to get off the dime. My home theater needs new amps and the ICEPower amps should work well with my 4ohm Linn speakers. I need 11 channels and if I am reading the specifications correctly 4 200ASC and 7 200AC should get the job done. Probably will split up boards between 2 separate enclosures.

15th August 2019, 12:08 AM	#1438
Bare diyAudio Member Join Date: Dec 2001 Location: vancouver	As small aside; Ebay Clone Dact type stepped (SMD) Attenuators are surprisingly good items. Better imo than than MY Ebay Alps blu pots ..of which most All available are clones these days. Stickers/claims notwithstanding. Alps hasn't mfg'd a blu pot for years PS Those ICE things look like they've been bombed by seagulls... too much White yuck. Last edited by Bare; 15th August 2019 at 12:11 AM.

20th August 2019, 01:09 PM	#1439
baszek diyAudio Member Join Date: Aug 2018	I have made cap mod of my small tpa3116 amp. Big ones under pcb are some chinese 4700uF (probably fakes nichicons but comments on alliexpress were ok). On the front of pcb I have also changed caps for some JAMICON 1000uF (bought in local store). All caps are Low ESR. After change I have noticed that bass is a little bit better. The next mod I will do: add some small radiator on the back of pcb under tpa3116 --> when sometimes I turn volume loud radiator is really hot :-) for daily use it is ok, but probably not for party mode :-) ImgBBB - Upload Image — Free Image Hosting ImgBBB - Upload Image — Free Image Hosting ImgBBB - Upload Image — Free Image Hosting Amps work with khadas tone board DAC + POLK AUDIO S15 speakers :-) I searching right now for some quality tpa3116 2.1 to add maybe subwoofer for movies. Last edited by baszek; 20th August 2019 at 01:14 PM.

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2nd August 2019, 04:54 PM	#1431
Wardsweb diyAudio Member Join Date: Feb 2003 Location: San Antonio, Texas	The chassis came from Aliexpress WA2 Whole Aluminum Chassis Can Do Tube Amp or Amplifier Shell DIY Box Silver & Black-in Amplifier from Consumer Electronics on Aliexpress.com \| Alibaba Group

2nd August 2019, 05:21 PM	#1432
chermann diyAudio Member Join Date: Jan 2017 Location: Vienna	Thanks

12th August 2019, 11:10 PM	#1434
matt_garman diyAudio Member Join Date: Feb 2008 Location: Chicago, Illinois, USA	zorz - looks great! One small suggestion: your AC power lines (looks like red and black wires) should be twisted. Since you're using connectors (rather than soldered wires), should only take a few minutes to twist those.

21st August 2019, 04:51 PM	#1440
onionhead diyAudio Member Join Date: May 2012 Location: Acton, CA	Seems a pretty straight forward build and looks very tidy inside. Thanks for sharing you have given me some inspiration to get off the dime. My home theater needs new amps and the ICEPower amps should work well with my 4ohm Linn speakers. I need 11 channels and if I am reading the specifications correctly 4 200ASC and 7 200AC should get the job done. Probably will split up boards between 2 separate enclosures.