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
May I ask what low-profile traffo you are using and where it was purchased. Link? Was it custom made?
Thx,
A SIMPLE POST-FILTER FEEDBACK TOPOLOGY FOR CLASS-D AMPLIFIERS
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
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
Attachments
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$
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$
And two "daylight shots"
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
If I had to use the kitchen counter to create my builds, my wife would have thrown me out long ago! Especially at my pace.
Pictures look great!Very nice looking build. Came out looking super. How does it sound. I'm in the process of building a Class D amp too - using one of the Sure modules. I'll post some pics when I get further along. Right now I'm waiting on parts from China.
The Densenclone
Left picture: the original Final Amplifier Densen B-3xx +
Other pictures: my Densenclone
Made with:
- an IKEA LACK shelf
- amplifier board TA2024 ( Ebay )
- Switching Power Supply 12 V – 5A ( Ebay )
- blue LED and connectors
If someone is interested in more information, I can open a thread in Class D Amplifiers.
Ciao.
Luca
Left picture: the original Final Amplifier Densen B-3xx +
Other pictures: my Densenclone
Made with:
- an IKEA LACK shelf
- amplifier board TA2024 ( Ebay )
- Switching Power Supply 12 V – 5A ( Ebay )
- blue LED and connectors
If someone is interested in more information, I can open a thread in Class D Amplifiers.
Ciao.
Luca
Attachments
I've had problems in the past buying beautiful gold plated RCA plugs that were way too tight and pulled the jack shell off on my pre/pro.
Though given the nature of banana plugs I guess they'd have to be pretty darn awful to be too loose or too tight.