Advice on new project- Mini-A w/ JFET or F4?

winslow · 17th January 2008, 10:22 PM

Need a new project to work on, and I can't decide what to build- another Mini-A but with a JFET front end or an F4? I would be driving either using the balanced outputs of the preamp section of my Benchmark Media DAC1. I have the PS and amp boards for the A/Mini-A already- got extras a while back from BrianGT. Have a 18-0-18 300VA transformer coming from Antek.

Any ideas before I start to gather parts?

I really don't know which one to build.

Holger Barske · 18th January 2008, 12:00 AM

300VA isn't very much for a stereo F4.

winslow · 18th January 2008, 12:12 AM

I could have sworn that is what is used in the commercial one.

winslow · 18th January 2008, 12:43 AM

Post 367
here says a 300 VA for a single transformer for a stereo pair of boards.

Nelson Pass · 18th January 2008, 12:53 AM

Quote:

Originally posted by HBarske
300VA isn't very much for a stereo F4.

If it's conservatively rated, it's enough. You are, of course,
welcome to use larger.

winslow · 18th January 2008, 01:05 AM

I can buy another one and do separate power supplies for the F4 if it came down to it.

I'm not sure on which route to go is all. Was curious on which way you guys would go.

17th January 2008, 10:22 PM	#1
winslow diyAudio Member Join Date: Aug 2005	Advice on new project- Mini-A w/ JFET or F4? Need a new project to work on, and I can't decide what to build- another Mini-A but with a JFET front end or an F4? I would be driving either using the balanced outputs of the preamp section of my Benchmark Media DAC1. I have the PS and amp boards for the A/Mini-A already- got extras a while back from BrianGT. Have a 18-0-18 300VA transformer coming from Antek. Any ideas before I start to gather parts? I really don't know which one to build.

18th January 2008, 12:00 AM	#2
Holger Barske diyAudio Member Join Date: Jan 2001 Location: Ruhrgebiet	300VA isn't very much for a stereo F4. __________________ Best regards: Holger www.holgerbarske.com

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
An advice on JFET	wazabee	Pass Labs	35	14th December 2011 12:24 AM
Aleph Mini with JFET input?	Arie	Pass Labs	11	21st March 2008 05:42 PM
Need speaker and amp advice for a new Mini Cooper	phrarod	Car Audio	41	21st November 2007 06:08 AM
My JFET project	bappe	Pass Labs	13	30th January 2007 12:17 AM
A chopped Mini-A with Jfet input stage	Fuling	Pass Labs	12	15th November 2006 07:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th January 2008, 12:12 AM	#3
winslow diyAudio Member Join Date: Aug 2005	I could have sworn that is what is used in the commercial one.

18th January 2008, 12:43 AM	#4
winslow diyAudio Member Join Date: Aug 2005	Post 367 here says a 300 VA for a single transformer for a stereo pair of boards.

18th January 2008, 01:05 AM	#6
winslow diyAudio Member Join Date: Aug 2005	I can buy another one and do separate power supplies for the F4 if it came down to it. I'm not sure on which route to go is all. Was curious on which way you guys would go.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)