My First chip amp. - Page 2

cpemma · 1st June 2008, 01:40 PM

Quote:

Originally posted by mikje
Do any of you DIY-ers have any suggestions for tweaks? Better caps, maybe???

A simple tweak for the preamp board would be better dual op-amps; as they're socketed it's easy to experiment. Apparently they come with TL072, it's not expensive to buy a few more up-market ones to try without going OTT. NE5532 and OPA2134 spring to mind but others may suggest better.

Both these boards use a simple onboard rectifier/smoothing section so on one hand changes to the electrolytics is pretty easy, on the other bypassing this section on the preamp with a regulated (7812 & 7912) supply may give more benefit.

Full preamp details.

K4003 Amp details.

mikje · 1st June 2008, 03:17 PM

cpemma,
Thanks for the tips. I found the op amps and regulators at mcmelectronics. Can you explain for this newbie how I would wire the regulator. Also, if I replaced the electrolytics, what would you recommend I use to replace them. What effect on the sound will better, larger electroytics have?
Thanks again for your tips.
Mike

Bluto · 4th June 2008, 08:04 AM

Mikje -

Apologies for going off topic but I'm curious about you 3CR TB's.

Have you tested them with anything yet? Impressions?

Bluto

mikje · 4th June 2008, 12:02 PM

Bluto,
I have been running the 3CRs. I like them a lot. They are light in the base, so I run them with a sub-woofer. I ran them off my Velleman amp; 12-15 WPC. They sounded great. Definitely worth the time and money. They take a little time to break in, so that needs to be kept in mind.
Thanks for asking.
Mike

mikje · 15th June 2008, 11:46 PM

I think I'm being close to finished with this amp. I still have a very slight hum, so I still need to work on some grounding. Otherwise, I think it's finished!

http://www.audiocircle.com/gallery/t...php?album=2191

ambience exists · 19th June 2008, 02:57 PM

I considered getting one of these kits, as the Chipamp.com kits can get pricey...

((AE))

Edits · 20th June 2008, 12:09 AM

Mikje, that is nice unique amp you have!

Already solve the hum problem? And how do you prevent temp buildup inside the case?

1st June 2008, 03:17 PM	#12
mikje Soakin' up the Sound! diyAudio Member Join Date: Feb 2008 Location: Bismarck, ND	cpemma, Thanks for the tips. I found the op amps and regulators at mcmelectronics. Can you explain for this newbie how I would wire the regulator. Also, if I replaced the electrolytics, what would you recommend I use to replace them. What effect on the sound will better, larger electroytics have? Thanks again for your tips. Mike __________________ Marantz PM8003 amp, Squeezebox Touch, DIY Krystals Jolida SJ502B, Mark Audio Alpair 10.2s

4th June 2008, 12:02 PM	#14
mikje Soakin' up the Sound! diyAudio Member Join Date: Feb 2008 Location: Bismarck, ND	Bluto, I have been running the 3CRs. I like them a lot. They are light in the base, so I run them with a sub-woofer. I ran them off my Velleman amp; 12-15 WPC. They sounded great. Definitely worth the time and money. They take a little time to break in, so that needs to be kept in mind. Thanks for asking. Mike __________________ Marantz PM8003 amp, Squeezebox Touch, DIY Krystals Jolida SJ502B, Mark Audio Alpair 10.2s

15th June 2008, 11:46 PM	#15
mikje Soakin' up the Sound! diyAudio Member Join Date: Feb 2008 Location: Bismarck, ND	I think I'm being close to finished with this amp. I still have a very slight hum, so I still need to work on some grounding. Otherwise, I think it's finished! http://www.audiocircle.com/gallery/t...php?album=2191 __________________ Marantz PM8003 amp, Squeezebox Touch, DIY Krystals Jolida SJ502B, Mark Audio Alpair 10.2s

19th June 2008, 02:57 PM	#16
ambience exists diyAudio Member Join Date: Jun 2008	I considered getting one of these kits, as the Chipamp.com kits can get pricey... ((AE)) __________________ ((AE))

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4th June 2008, 08:04 AM	#13
Bluto diyAudio Member Join Date: Sep 2007 Location: WI.- near the Dells	Mikje - Apologies for going off topic but I'm curious about you 3CR TB's. Have you tested them with anything yet? Impressions? Bluto

20th June 2008, 12:09 AM	#17
Edits diyAudio Member Join Date: Feb 2008	Mikje, that is nice unique amp you have! Already solve the hum problem? And how do you prevent temp buildup inside the case?

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