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Old 26th November 2003, 06:41 PM   #1
MaXiZ is offline MaXiZ  Italy
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Question About tda1514

I've built a power amp based on TDA1514 using the shematic on the datasheet. but the sound have a lot of crapple and when i take up the volume it turn of.. why? Not eoungh power from psu?
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Old 26th November 2003, 06:46 PM   #2
dhaen is offline dhaen  Europe
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Hi MaXiZ,

This is normally a good sounding chip.
Make sure you have included the Zobel network, as shown on the application sheet, otherwise it may oscillate.

Cheers,
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Old 26th November 2003, 06:56 PM   #3
MaXiZ is offline MaXiZ  Italy
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Quote:
Make sure you have included the Zobel network
WHAT????????
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Old 26th November 2003, 08:52 PM   #4
sardonx is offline sardonx  Canada
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I used to own a Cambridge Audio a1mk3se int. amp which used two of the tda1514 chips in it. I took it apart and had the circuit board in a bag and someone in my house ended up throwing it out!!!!! I wish i still had it.

It was an amazing sounding little amp. Even the local hi-end audio store (alternative audio, very knowledgable and respected people) said the amp provided some characteristics that no other ones could match no matter the price. So pitch perfect and full of harmonics and real 'you can touch' sound. The ambience is incredible. Cambridge really did a nice job on the tweaking of the board. I'm still heart broken about losing the board to this day. Maybe i'll be able to pick another one up somtime but i think they're hard to come by now unless you live in the UK.

The tda1514 can sound sooooo nice.
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Old 26th November 2003, 09:51 PM   #5
dhaen is offline dhaen  Europe
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Default interesting reply...

Quote:
Originally posted by MaXiZ

WHAT????????
Zobel network is a 22n and 3R3 in series, connected between the output and ground. (As far as I can remember).
The chip is inclined to oscillate without it.
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Old 27th November 2003, 06:01 AM   #6
MaXiZ is offline MaXiZ  Italy
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If it's that i've done this as shown in the datasheet! Thanx anyway
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Old 18th January 2004, 09:41 AM   #7
3de is offline 3de  Bulgaria
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Hi!
Try to put the 3u3 capacitor(the one between 2nd and 4th pin) as near as possible to the chip.I had similar problem but when I placed it directly to the pins of the IC everything was fine
Good luck
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Old 18th January 2004, 07:34 PM   #8
Morse is offline Morse  United States
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Default Paging Dhaen....

Hi John;

>>>...This (TDA1514) is normally a good sounding chip...<<<

Interesting. My only source stateside is Parts Express and they want $10 each - is it worth that much per chip, or am I better off going to the LM3886 for higher powered amps? Just curious - now that I've got my new office amp (TDA2030A) up and running, I'm tempted to build something a little gutsier (and anyway, all my backburnered valve projects are more expensive! ).

Doumo arigatou gozaimasu in advance for any information!
Ja mata,
Morse
PS Can you recommend any parts stores in Akihabara? I'll be in Tokyo in mid March, and am planning a little side trip. TIA again!
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