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Old 20th August 2011, 05:33 AM   #1271
NMOS is offline NMOS  Germany
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Quote:
Originally Posted by Dzony988 View Post
Finaly, I resolved noise. Signal audio cables from input jack to input conector on the PCB was bad, I changed and now everything is just fine. Even with 1n in input stage I dont have a noise, I have good mids and highs tones! Thank you everybady who help me with this!

On this picture is my new PCB, not to small 8.5 x 9cm but one side and it has protections. Model for TO247 and TO220 case of output transistrs (smaller then before).

For Signal and clip indicator I plan to use AN6884 (vu meter). Signal led is on second led and clip led is on the last. Input signal with 10K trim.pot I can adjust clip level. Is this good idea?

What do you think?

And one question more, what is better, 20uH with 1uF or 30uH with 1uF output filter on 250Khz res.freq. or higher freq. on example 300KHz?

Thanks

Can you post full schematic and share PCB Gerber Files ?

What output Filter do you use ?
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Old 20th August 2011, 02:43 PM   #1272
PROTON is offline PROTON  Greece
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Talking How can i buy a sample of them,i live in Europe.

Quote:
Originally Posted by andrewlebon View Post
DIGITCLASS CLASS-D POWER AMPLIFIERS MODULE T2400H.

T2400H SPECIFICATIONS:.
• 400W @ 8 ohms (+ /-90V).
• 750W @ 4 ohms (+ /-90V).
• 1400W @ 2 ohms (+ /-90V).
• 2200W@1.33 ohms (+ /-90V).

• 800W @ 8 ohms (+ /-125V).
• 1500W @ 4 ohms (+ /-125V).
• 2400W @ 2 ohms (+ /-125V).

• Input Impedance: 47k ohms unbalanced.
• Frequency Response: 20 Hz - 20 kHz.
• Supply Voltage: + /-45V to + /-125V.
• BIAS Voltage: 12V to 14V.
• Dimensions (W x H x D): 55 x 45 x 150 mm.
Price: 850.00 Baht


DIGITCLASS ™:.
DIGITCLASS CLASS-D POWER AMPLIFIERS MODULE HyperXD.

HyperXD SPECIFICATIONS:.
• 400W @ 8 ohms.
• 750W @ 4 ohms.
• 1400W @ 2 ohms.
• 2200W@1.33 ohms.
• Minimun load 1 ohm.
• Input Impedance: 100k ohms unbalanced.
• Frequency Response: 20 Hz - 20 kHz.
• Supply Voltage: + /-45V to + /-95V.
• BIAS Voltage: 12V to 14V.
• Dimensions (W x H x D): 55 x 50 x 200 mm.
Price: 1,290.00 Baht

woots:.
Released when offline is very interesting.

Old.
How can i buy a sample of them,i live in Europe.
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Old 20th August 2011, 04:13 PM   #1273
PROTON is offline PROTON  Greece
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Quote:
Originally Posted by andrewlebon View Post
DIGITCLASS CLASS-D POWER AMPLIFIERS MODULE T2400H.

T2400H SPECIFICATIONS:.
• 400W @ 8 ohms (+ /-90V).
• 750W @ 4 ohms (+ /-90V).
• 1400W @ 2 ohms (+ /-90V).
• 2200W@1.33 ohms (+ /-90V).

• 800W @ 8 ohms (+ /-125V).
• 1500W @ 4 ohms (+ /-125V).
• 2400W @ 2 ohms (+ /-125V).

• Input Impedance: 47k ohms unbalanced.
• Frequency Response: 20 Hz - 20 kHz.
• Supply Voltage: + /-45V to + /-125V.
• BIAS Voltage: 12V to 14V.
• Dimensions (W x H x D): 55 x 45 x 150 mm.
Price: 850.00 Baht


DIGITCLASS ™:.
DIGITCLASS CLASS-D POWER AMPLIFIERS MODULE HyperXD.

HyperXD SPECIFICATIONS:.
• 400W @ 8 ohms.
• 750W @ 4 ohms.
• 1400W @ 2 ohms.
• 2200W@1.33 ohms.
• Minimun load 1 ohm.
• Input Impedance: 100k ohms unbalanced.
• Frequency Response: 20 Hz - 20 kHz.
• Supply Voltage: + /-45V to + /-95V.
• BIAS Voltage: 12V to 14V.
• Dimensions (W x H x D): 55 x 50 x 200 mm.
Price: 1,290.00 Baht

woots:.
Released when offline is very interesting.

Old.
How can i buy some sample of these amp.The site is on thai language and i live in europe.
Thank for your time
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Old 20th August 2011, 04:30 PM   #1274
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@NMOS
I have paroblem with output coli because in my country I cant find Micrometals iron powder cores, feritte cores too. But I get by somehow .

This is pcb files, with components layout, artwork and schematic of whole board. On schmeatic you hava calculations for resistor in regard to Vcc pover supplay. TIP41c needs his own heatsink!!!


By the way, I still wait answer on my previous question about Vu meter like clip indicator and uotput coli inductance, if someone can answer on it.

Thanks
Attached Images
File Type: png component layout.png (100.8 KB, 983 views)
Attached Files
File Type: pdf All D class.pdf (26.5 KB, 506 views)
File Type: pdf PCB Artwork.pdf (48.4 KB, 444 views)

Last edited by Dzony988; 20th August 2011 at 04:39 PM.
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Old 24th August 2011, 04:15 PM   #1275
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SPECIFICATIONS:
Supply Rang +/-75V to +/-100V
Sub Supply 9V-12V
Un-Balance Input
Input Impedance 100K
Low Noise
Class D Freq. Response : 20 Hz - 5000 Hz
Power Output 1600 watt@4 ohms
Power Output 2500 watt@2 ohms
Power Output 4000 watt@1 ohms SPECIFICATIONS:
Supply Rang +/-75V to +/-100V
Sub Supply 9V-12V
Un-Balance Input
Input Impedance 100K
Low Noise
Class D Freq. Response : 20 Hz - 5000 Hz
Power Output 2000 watt@4 ohms
Power Output 2800 watt@2 ohms
Power Output 5500 watt@1 ohms
Attached Images
File Type: jpeg as.jpeg (26.5 KB, 920 views)
File Type: jpeg index.php.jpeg (25.3 KB, 896 views)
File Type: gif sd.gif (39.7 KB, 911 views)
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Old 24th August 2011, 05:28 PM   #1276
Pafi is offline Pafi  Hungary
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What are you advertising?
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Old 25th August 2011, 03:37 PM   #1277
savu is offline savu  Romania
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looks like a bad class ab design
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1'st rule of chess:
The only way to get smarter is by playing a smarter opponent.
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Old 25th August 2011, 04:32 PM   #1278
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Its a poorly laid out class-D amplifier by someone who is also a failure in class-AB amps as seen from the pcb layout itself.
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Old 25th August 2011, 05:15 PM   #1279
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He seems to keep spamming stuff from un-soundsales.
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Old 26th August 2011, 11:10 AM   #1280
PROTON is offline PROTON  Greece
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Join Date: Feb 2010
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Quote:
Originally Posted by andrewlebon View Post
SPECIFICATIONS:
Supply Rang +/-75V to +/-100V
Sub Supply 9V-12V
Un-Balance Input
Input Impedance 100K
Low Noise
Class D Freq. Response : 20 Hz - 5000 Hz
Power Output 1600 watt@4 ohms
Power Output 2500 watt@2 ohms
Power Output 4000 watt@1 ohms SPECIFICATIONS:
Supply Rang +/-75V to +/-100V
Sub Supply 9V-12V
Un-Balance Input
Input Impedance 100K
Low Noise
Class D Freq. Response : 20 Hz - 5000 Hz
Power Output 2000 watt@4 ohms
Power Output 2800 watt@2 ohms
Power Output 5500 watt@1 ohms
...Thanks about the schematic but i need info about one Thai site that is selling DIGITCLASS amp kits..
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