Lepai T-Amp with TA2020 - Page 24

panda360 · 9th May 2009, 05:35 PM

I find below message from commerial site.

No turn-on 'pop' noise
Yup, without the input cap, there's no charging of cap during power up. Thus, no more "power up pop". Just a soft 'tick' sound.

http://diyparadise.com/charlize2.html

Puffin · 9th May 2009, 06:18 PM

Panomaniac. I see from the Audiomagus site that you currently have health problems. I am really sorry to hear that. You helped me through my first mods to the Sonic Impact amps and was really grateful. I trust you will be restored to full health soon.

Regards.

Pano · 10th May 2009, 04:09 AM

Hi Puffin. Thanks - but just t clear things up - that's NOT me. That would be Mike Wyatt who founded AudioMagus.

I am no longer working with AudioMagus so I don't know much about what's going on. I wish Mike W. all the best and hope he gets back to good health soon!

Puffin · 10th May 2009, 08:07 PM

Thanks for putting me right.

Pano · 10th May 2009, 09:27 PM

And thanks for your good thoughts!

aszu · 15th May 2009, 07:04 PM

Anyone found out what is the easiest way to bypass tone controls? I am really tempted to do this in order to improve sq even further...

col · 15th May 2009, 11:16 PM

would be good to be able to place a switch in the circuit so that you could turn the tone controls on or off. Anyone got any ideas?

There has been some work done on bypassing the tone controls on the 1st version of the Lepai, there are some posts and photos about that earlier in the thread. The circuit board has significantly changed since then though.

col.

panda360 · 20th May 2009, 01:59 PM

Hi Col,

I haven't found LM4562. I replace JRC4558 with OPA2134PA. The sound became crystal clear. I shall LM4562 once I found.

whelibob · 20th May 2009, 02:26 PM

hmm, my ghettoblaster project didnt start out that well. i connected my 12v motorbike battery to my lepai t-amp with the powercord supplied and the cord started to overheat. probably shortcircuited the damn thing, due bad isolation of the cord :|

Gmorris · 20th May 2009, 05:02 PM

Panda360:

So did you try by-passing the input cap on your Lepai? If so, how was the end result?

I'm about to construct a portable "boom-box" using aluminum angles and some old Polk Audio bookshelf speakers. I'll post some pics once I'm done.

10th May 2009, 04:09 AM	#233
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Hi Puffin. Thanks - but just t clear things up - that's NOT me. That would be Mike Wyatt who founded AudioMagus. I am no longer working with AudioMagus so I don't know much about what's going on. I wish Mike W. all the best and hope he gets back to good health soon! __________________ Take the Speaker Voltage Test!

10th May 2009, 09:27 PM	#235
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	And thanks for your good thoughts! __________________ Take the Speaker Voltage Test!

15th May 2009, 11:16 PM	#237
col diyAudio Member Join Date: Feb 2008 Location: Melbourne, Victoria, Australia	would be good to be able to place a switch in the circuit so that you could turn the tone controls on or off. Anyone got any ideas? There has been some work done on bypassing the tone controls on the 1st version of the Lepai, there are some posts and photos about that earlier in the thread. The circuit board has significantly changed since then though. col. __________________ http://www.minirig.org.au

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9th May 2009, 05:35 PM	#231
panda360 diyAudio Member Join Date: May 2009	I find below message from commerial site. No turn-on 'pop' noise Yup, without the input cap, there's no charging of cap during power up. Thus, no more "power up pop". Just a soft 'tick' sound. http://diyparadise.com/charlize2.html

9th May 2009, 06:18 PM	#232
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Panomaniac. I see from the Audiomagus site that you currently have health problems. I am really sorry to hear that. You helped me through my first mods to the Sonic Impact amps and was really grateful. I trust you will be restored to full health soon. Regards.

10th May 2009, 08:07 PM	#234
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	Thanks for putting me right.

15th May 2009, 07:04 PM	#236
aszu diyAudio Member Join Date: Apr 2009	Anyone found out what is the easiest way to bypass tone controls? I am really tempted to do this in order to improve sq even further...

20th May 2009, 01:59 PM	#238
panda360 diyAudio Member Join Date: May 2009	Hi Col, I haven't found LM4562. I replace JRC4558 with OPA2134PA. The sound became crystal clear. I shall LM4562 once I found.

20th May 2009, 02:26 PM	#239
whelibob diyAudio Member Join Date: May 2009	hmm, my ghettoblaster project didnt start out that well. i connected my 12v motorbike battery to my lepai t-amp with the powercord supplied and the cord started to overheat. probably shortcircuited the damn thing, due bad isolation of the cord :\|

20th May 2009, 05:02 PM	#240
Gmorris diyAudio Member Join Date: Mar 2005 Location: MusicCity	Panda360: So did you try by-passing the input cap on your Lepai? If so, how was the end result? I'm about to construct a portable "boom-box" using aluminum angles and some old Polk Audio bookshelf speakers. I'll post some pics once I'm done.

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