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Old 10th July 2009, 05:46 AM   #451
msj965 is offline msj965  United States
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Default hello:)

Hi Djnemesi
Just wanna ask what is the outcome when you put the noise suppressor.Pls.can you specify what parts that you replaced and pls include the volts/watt too.sorry if I ask you all this things, coz I'm a begginer when it comes to electronic.
Still waiting for your new pixs!!!

Cheers,
msj
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Old 11th July 2009, 02:16 PM   #452
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Default damn! already burned!

TA2020 R.I.P.
I was using it with two 4 ohm speakers, trying to push the volume to the limit and....tuuuuk, from one channel come out a DC voltage and all are gone mute. I've done some test end I've found that the power supply (that should be 12V) was over 14V.
Measuring I found that an output of ta2020 is shorted to gnd.

Now I replace the ta2020 putting the overshoot diode

Quote:
Originally posted by msj965
Hi Djnemesi
Just wanna ask what is the outcome when you put the noise suppressor.Pls.can you specify what parts that you replaced and pls include the volts/watt too.sorry if I ask you all this things, coz I'm a begginer when it comes to electronic.
Still waiting for your new pixs!!!

Cheers,
msj
Hi! with the suppressor you hear nothing when you turn on the amplifier, after a couple of second you hear a very little tick and the sound come out. I used 1/4W resistor, but you can use what you prefer. The capacitor must be rated for a voltage greater than 5V (I found a 47u, 10V in my drawer)
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Old 15th July 2009, 01:44 PM   #453
gurusan is offline gurusan  United States
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Is there any reason why the 1uF electrolytic connected to pins 27 and 29 has a 100V rating?

Can anyone suggest a suitable replacement as the stock one looks to be of very poor quality.... There are panasonic FC 1uf caps in 25 or 35V ratings I believe, but the 100V rating of the stock cap has me confused.
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Old 17th July 2009, 05:00 PM   #454
msj965 is offline msj965  United States
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Red face hello:)

Hi there!!!
Any more updates?

msj
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Old 20th July 2009, 06:51 PM   #455
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Default bypass

Hi to all,
this is it my first message.

i would like to ask if the bypass mod make loose some watt.
i have make this mod. and i think that the volume is decrease, i use 22k resistor for the bypass and 2.2uf wima for the capacitor.
Regard.
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Old 21st July 2009, 07:44 AM   #456
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Default Re: bypass

Quote:
Originally posted by totoelettro
Hi to all,
this is it my first message.

i would like to ask if the bypass mod make loose some watt.
i have make this mod. and i think that the volume is decrease, i use 22k resistor for the bypass and 2.2uf wima for the capacitor.
Regard.

welcome aboard. You can change from 22K to original 8.25K, or some value between. But beware your neighbour will lock your door.
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Old 21st July 2009, 11:25 AM   #457
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Sorry, my English is too bad. My meaning is your neighbors will knock your door because your volume is too high.
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Old 22nd July 2009, 11:28 AM   #458
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Default resistor for tone bypass

thanks to all,
i would ask if the value of resistor of 22k is the best for the quality of sound or not. (low resistor more power and worst sound, isn't it?) tnks to all and sorry for the english.
Regard
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Old 22nd July 2009, 12:28 PM   #459
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Default Re: resistor for tone bypass

Quote:
Originally posted by totoelettro
thanks to all,
i would ask if the value of resistor of 22k is the best for the quality of sound or not. (low resistor more power and worst sound, isn't it?) tnks to all and sorry for the english.
Regard

Pleae refer to TA-2020 spec, the standard values is 22K. R1-Inverting input resistance to provide AC gain in conjunction with RF. This input is biased
at the BIASCAP voltage (approximately 2.4VDC).
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Old 24th July 2009, 03:46 AM   #460
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Join Date: Jul 2009
Hi there

(New to the forum...)

- thanks to everyone who has contributed to this thread. This is really a whole new world to me...

I got my lepai amp a few days ago and I've really grown to like the sound. It's really different to my NAD 3020 and haven't been able to stop listening to it actually.

I got this wee amp as an experiment - and if i liked the tripath sound I was planning to then buy a pre-made amp like the trend or the virtue.one but due to this forum I will probably try to make the most of this amp.

The problem is that I have zero skills in this area. The mod that I really want is the noise suppresion one - but is this really something that a total beginner can learn to do?

If I don't do it I'm worried that my speakers are going to pop out one day when turning the thing on...


Also - I am rnning the preamp out from my NAD into the input of the lepai. Is this ok?

Thanks in advance for any advice...
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