Class D Amp Photo Gallery

[b4rr3l]

Originally Posted by redjr

Roughly how many watts does that yield from that amp module?

Using sine wave I could attain a 95W but my speakers almost exploded.

Using 70% of volume in most of the musics it hardly consumes more than 20W from the wall, but sound stronger than my vintage marantz thas has 250W. Actually if I set the volume to 80% the whole street will be able to hear.


T1 Alps and T2 Tk2050

[redjr]

Originally Posted by jalejos

My Hypex 5x180W in 1U rack

May I ask what low-profile traffo you are using and where it was purchased. Link? Was it custom made?
Thx,

[b4rr3l]

New soon

[AnalogIntrest]

This amplifier,
a custom ordered project is based on the idea from "PhaseAccurate" (ChL). The nice thing about this amp is the fact that it handles a wide load range from nominal to open load equaly well. Operating range is from +-30V..+-60V with max. output level signals from 25Vrms to 70Vrms.

The design is based on two equal half bridges that are being used in full bridge mode for higher output levels. This is an almost analog amplifier featuring NO special components except for the half bridge gate drivers chips being used (IRS2011). The modulator is based on the classical TriangleWave Generator in front of a comparator generating the PWM output signal for the half bridges. The amplifier is carrier based 384KHz featuring zero offset output with noiseless turn-on including notch fitlers after the LC's for additional carrier suppression.

I have no test figures yet, however on my old 200W Panasonic 3 way audio box it sounds very well. I encourage everyone to read the paper from "PhaseAccurate".

Many thank's for the help and this great paper "A SIMPLE POST-FILTER FEEDBACK TOPOLOGY FOR CLASS-D AMPLIFIERS "

AnalogIntrest

[jalejos]

Originally Posted by redjr

May I ask what low-profile traffo you are using and where it was purchased. Link? Was it custom made?
Thx,

See in noratel.com but was a custom made in Spain.

[redjr]

Originally Posted by jalejos

See in noratel.com but was a custom made in Spain.

Ah-ha! I thought it was custom made. I'll check out the site. Thx.

[shinuza]

First DIY project. Nothing much to be proud of, what I did was mostly soldering, drilling and swearing.
The board is a DIY KIT I bought from on diyhifishop (awesome service)
The chassis comes from hifi2000.

Amplifier: Class D TDA8950
Output Power: 2 x 150 W @ 4 Ohm (supposedly)
Total cost: A little less than 170 US$

[qusp]

Originally Posted by AnalogIntrest

This amplifier,
a custom ordered project is based on the idea from "PhaseAccurate" (ChL). The nice thing about this amp is the fact that it handles a wide load range from nominal to open load equaly well. Operating range is from +-30V..+-60V with max. output level signals from 25Vrms to 70Vrms.

very interesting project, love the Right angle SMD coaxial inputs

[RoNNy379CH]

Wow, nice pictures!

Today I build my 8 channel amplifer - sure electronics 2 x 4x100W TK2050.

Sounds on my infinity betas 50 great - with my Player: oppo BDP-95.

complete.jpg

build0.jpg

build1.jpg

build2.jpg

build3.jpg

complete2.jpg

[RoNNy379CH]

And two "daylight shots"