Hello from brisbane australia 2011

Ant01 · 2nd July 2011, 02:57 AM

Hi there i found your site on the google search engine it looks fantastic ive always wanted to have a go at building audio gear and it certainly looks far easier than i thought! Ive got the usual preamp/power amp setup and a set of pretty good 4 ohm 2 1/2 way speakers and im looking to add a 3 channel power amp(the preamp is dolby digital)to power the center/rear speakers. My only concern is what do i need to change to make these designs work on 240v ac power? Id love to meet my fellow hi fi enthusiasts so feel free to drop me a message and ill get back to you asap

Pano · 2nd July 2011, 03:14 AM

Welcome to the forum. If you post you question in the Pass Labs section (look for a thread on the De Lite) you should be able to find the help you need.

planet10 · 2nd July 2011, 04:14 AM

Welcome to the party

dave

Ant01 · 2nd July 2011, 04:40 AM

Hi thanks for the quick reply :-) so whereabouts are you located and what part of hi fi interests you the most amps or speakers or?

Cal Weldon · 2nd July 2011, 06:30 AM

Hello Ant01 and welcome to duyAudio. You might wish to ask your questions in another section as not everyone looks in here. Good luck.

Me, I am strictly speakers as you can see in my sig line.

wintermute · 2nd July 2011, 07:40 AM

Hi Ant01. There are many amps here, Pass labs as Pano suggested is a great place to look for high quality Class A amps (power hungry heaters) The chipamp forum is great for cheap and cheerful (but good performance) probably not a bad for HT use. Solid state is a good place to look for more conventional class A/B amplifiers (but there may be some class A's in there as well).

Class D for high efficiency digital amps. and the tube forums for valve based stuff

something for everyone here!

With respect to making designs work on 240V there should not be anything here that runs directly at mains potential, everything should be using a transformer (the only exception may be switch mode power-supplies). For anything with a transformer, you will just need to buy a transformer with the required secondary voltages and VA rating and make sure it has a 240V primary winding

Personally, I'm into speakers amps and recently (though not yet constructed) active crossover design.

welcome to diyAudio

Tony.

Ant01 · 2nd July 2011, 11:37 AM

I'll make sure i post in the right one for next time -feeling my way around

looks like theres alot of great designs here and im gonna learn alot

2nd July 2011, 02:57 AM	#1
Ant01 diyAudio Member Join Date: Jun 2011 Location: Brisbane Australia	Hello from brisbane australia 2011 Hi there i found your site on the google search engine it looks fantastic ive always wanted to have a go at building audio gear and it certainly looks far easier than i thought! Ive got the usual preamp/power amp setup and a set of pretty good 4 ohm 2 1/2 way speakers and im looking to add a 3 channel power amp(the preamp is dolby digital)to power the center/rear speakers. My only concern is what do i need to change to make these designs work on 240v ac power? Id love to meet my fellow hi fi enthusiasts so feel free to drop me a message and ill get back to you asap

2nd July 2011, 03:14 AM	#2
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Welcome to the forum. If you post you question in the Pass Labs section (look for a thread on the De Lite) you should be able to find the help you need. __________________ Take the Speaker Voltage Test!

2nd July 2011, 04:14 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Welcome to the party dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

2nd July 2011, 06:30 AM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Hello Ant01 and welcome to duyAudio. You might wish to ask your questions in another section as not everyone looks in here. Good luck. Me, I am strictly speakers as you can see in my sig line. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

2nd July 2011, 07:40 AM	#6
wintermute just another diyAudio Moderator Join Date: Aug 2003 Location: Sydney Blog Entries: 22	Hi Ant01. There are many amps here, Pass labs as Pano suggested is a great place to look for high quality Class A amps (power hungry heaters) The chipamp forum is great for cheap and cheerful (but good performance) probably not a bad for HT use. Solid state is a good place to look for more conventional class A/B amplifiers (but there may be some class A's in there as well). Class D for high efficiency digital amps. and the tube forums for valve based stuff something for everyone here! With respect to making designs work on 240V there should not be anything here that runs directly at mains potential, everything should be using a transformer (the only exception may be switch mode power-supplies). For anything with a transformer, you will just need to buy a transformer with the required secondary voltages and VA rating and make sure it has a 240V primary winding Personally, I'm into speakers amps and recently (though not yet constructed) active crossover design. welcome to diyAudio Tony. __________________ Any intelligence I may appear to have is purely artificial! Some of my photos


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2nd July 2011, 04:40 AM	#4
Ant01 diyAudio Member Join Date: Jun 2011 Location: Brisbane Australia	Hi thanks for the quick reply :-) so whereabouts are you located and what part of hi fi interests you the most amps or speakers or?

2nd July 2011, 11:37 AM	#7
Ant01 diyAudio Member Join Date: Jun 2011 Location: Brisbane Australia	thank you for the help guys I'll make sure i post in the right one for next time -feeling my way around looks like theres alot of great designs here and im gonna learn alot

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