buying a panny instead of amp1

regal · 27th July 2005, 09:45 PM

I was going to build an amp 1 because of the 4ohm capability which greatly expands the options with DIY speakers. There is a catch with it requiring an oddball transformer 300VA 2x22V in order to run 4ohm. There are 2x22V 185VA transformers at Digikey but there really aren't any public power supply designs which show how to hook up 2 transformers to get +-30V.

I am back to picking up a panasonic SA70 reciever, yes it limits me to 6ohm or higher speakers but I think I will be happy with it based on my experience with the XR SA25.

cowanrg · 27th July 2005, 10:46 PM

avel lindberg stocks a 330va toroidal with dual 25v secondaries... this should be close enough.

tobias_svensk · 28th July 2005, 12:15 AM

What about 2 pieces of 2x22V 120VA for €10 a piece from hypex.nl ?

Edit: hm forget my answer

fb · 28th July 2005, 03:39 AM

I'm thinking of going the other way - I currently own a Panasonic XR50, and I'm wondering whether the currently available class D/T amp kits will provide an upgrade in sound quality?

motherone · 28th July 2005, 09:20 AM

My panny SA-XR50 sounds as good, if not better, than my tripath based stuff.. But I relegated it to use for the home theater and occasional music listening.

fb · 28th July 2005, 11:55 AM

Quote:

Originally posted by motherone
My panny SA-XR50 sounds as good, if not better, than my tripath based stuff.. But I relegated it to use for the home theater and occasional music listening.

Ok thanks. Guess I won't be dipping into DIY amps just yet then....

tktran · 28th July 2005, 01:11 PM

fb:

Do you know any Aussie retailers that sell the SA-XR50 for a good price?

The Panasonic Australia website lists the a high retail price compared to the US retail...

fb · 28th July 2005, 10:25 PM

I paid roughly 600 at a Betta Electrical, early this year, so prices should have come down a lot I guess. They were cheaper than JB Hifi and a few other retailers I bothered to ring.

tktran · 29th July 2005, 06:56 AM

Thanks for that.

regards,
Thanh

27th July 2005, 09:45 PM	#1
regal diyAudio Member Join Date: Jan 2004 Location: MD	buying a panny instead of amp1 I was going to build an amp 1 because of the 4ohm capability which greatly expands the options with DIY speakers. There is a catch with it requiring an oddball transformer 300VA 2x22V in order to run 4ohm. There are 2x22V 185VA transformers at Digikey but there really aren't any public power supply designs which show how to hook up 2 transformers to get +-30V. I am back to picking up a panasonic SA70 reciever, yes it limits me to 6ohm or higher speakers but I think I will be happy with it based on my experience with the XR SA25.

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27th July 2005, 10:46 PM	#2
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	avel lindberg stocks a 330va toroidal with dual 25v secondaries... this should be close enough.

28th July 2005, 12:15 AM	#3
tobias_svensk diyAudio Member Join Date: Jan 2004 Location: Hudiksvall	What about 2 pieces of 2x22V 120VA for €10 a piece from hypex.nl ? Edit: hm forget my answer

28th July 2005, 03:39 AM	#4
fb diyAudio Member Join Date: Apr 2005 Location: Brisbane, Aus	I'm thinking of going the other way - I currently own a Panasonic XR50, and I'm wondering whether the currently available class D/T amp kits will provide an upgrade in sound quality?

28th July 2005, 09:20 AM	#5
motherone diyAudio Member Join Date: Apr 2003 Location: Seattle	My panny SA-XR50 sounds as good, if not better, than my tripath based stuff.. But I relegated it to use for the home theater and occasional music listening.

28th July 2005, 01:11 PM	#7
tktran Account Disabled Join Date: Mar 2003 Location: Perth	fb: Do you know any Aussie retailers that sell the SA-XR50 for a good price? The Panasonic Australia website lists the a high retail price compared to the US retail...

28th July 2005, 10:25 PM	#8
fb diyAudio Member Join Date: Apr 2005 Location: Brisbane, Aus	I paid roughly 600 at a Betta Electrical, early this year, so prices should have come down a lot I guess. They were cheaper than JB Hifi and a few other retailers I bothered to ring.

29th July 2005, 06:56 AM	#9
tktran Account Disabled Join Date: Mar 2003 Location: Perth	Thanks for that. regards, Thanh

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