Gigawork F5

Andrew Eckhardt · 30th November 2010, 04:26 PM

Just a query to those that probably know better... I was thinking of ordering a couple of these boards to drive some APT50's, but wonder if the circuit can really work at all without matched semiconductors? Also, who the heck makes those 240's?

Thanks all..

Class A F5 F-5 pure class A power amplifier stereo Kit - eBay (item 160502231990 end time Dec-04-10 10:11:01 PST)

max426 · 30th November 2010, 05:02 PM

Why wouldn't you just buy these?
F5 PCBs - PCB Bank

Chad · 30th November 2010, 05:17 PM

The Gigaworks are not the original circuit. The picture shows 2 caps in the circuit. Papa purposely left caps out so they couldn't alter the sound. Buy the DIY boards and either source the parts your self or buy them from the Tech-Diy store. That way you know you have the proper parts. The jfets shown in his pictures are not the beloved 170/74 they are 2sk107 and 2sk366.

Chad

Melon Head · 30th November 2010, 07:10 PM

Nooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooo

Support the forum, or buy from Peter Daniel.

Andrew Eckhardt · 30th November 2010, 07:54 PM

Many thanks on the heads-up to all the forum work on this circuit. I see the matching is a non-question anyway since it's really a complmentary single-ended arrangement, but I should try to get better parts than are offered from gigawork. I will have to read the original F5 thread to know what I'm doing..

DJNUBZ · 5th December 2010, 04:56 AM

Is anyone offering a full kit like gigawork. I would prefer an amp using the original design but as a first time builder it is WAYYYY less stressful knowing everything is there in one kit.

TheShaman · 5th December 2010, 08:26 AM

You can get PCBs from the diyaudio store and kits from TechDIY

otto88 · 12:27 PM

Thanks, Shaman

is there a link to the possible/ typical output of the Burning Amplifier 2?

30th November 2010, 04:26 PM	#1
Andrew Eckhardt diyAudio Member Join Date: Nov 2005 Location: PA	Gigawork F5 Just a query to those that probably know better... I was thinking of ordering a couple of these boards to drive some APT50's, but wonder if the circuit can really work at all without matched semiconductors? Also, who the heck makes those 240's? Thanks all.. Class A F5 F-5 pure class A power amplifier stereo Kit - eBay (item 160502231990 end time Dec-04-10 10:11:01 PST)

30th November 2010, 05:02 PM	#2
max426 diyAudio Member Join Date: Aug 2008 Location: Pa. USA	Why wouldn't you just buy these? F5 PCBs - PCB Bank __________________ "This is DIY. I view op amps the same way I look at a can of soup or a fast-food burger" NP

30th November 2010, 07:10 PM	#4
Melon Head Formerly Thanh1973 Join Date: Nov 2006	Nooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooo Support the forum, or buy from Peter Daniel. __________________ "No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need."

5th December 2010, 12:13 PM	#8
otto88 diyAudio Member Join Date: Dec 2007	Thanks, Shaman is there a link to the possible/ typical output of the Burning Amplifier 2? Last edited by otto88; 5th December 2010 at 12:27 PM.

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


	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

30th November 2010, 05:17 PM	#3
Chad diyAudio Member Join Date: Aug 2001 Location: Florida, USA	The Gigaworks are not the original circuit. The picture shows 2 caps in the circuit. Papa purposely left caps out so they couldn't alter the sound. Buy the DIY boards and either source the parts your self or buy them from the Tech-Diy store. That way you know you have the proper parts. The jfets shown in his pictures are not the beloved 170/74 they are 2sk107 and 2sk366. Chad

30th November 2010, 07:54 PM	#5
Andrew Eckhardt diyAudio Member Join Date: Nov 2005 Location: PA	Many thanks on the heads-up to all the forum work on this circuit. I see the matching is a non-question anyway since it's really a complmentary single-ended arrangement, but I should try to get better parts than are offered from gigawork. I will have to read the original F5 thread to know what I'm doing..

5th December 2010, 04:56 AM	#6
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	Is anyone offering a full kit like gigawork. I would prefer an amp using the original design but as a first time builder it is WAYYYY less stressful knowing everything is there in one kit.

5th December 2010, 08:26 AM	#7
TheShaman diyAudio Member Join Date: Jan 2007 Location: Crete	You can get PCBs from the diyaudio store and kits from TechDIY

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
New Small DIY Gigawork Dac?	jeffjazz	Digital Line Level	252	5th May 2012 02:31 PM
Help needed on Gigawork DAC !!!	nick974	Digital Line Level	11	17th April 2012 09:13 PM
Gigawork Upsampling DAC w USB	psemeraro	Digital Line Level	53	31st March 2011 11:29 AM
[Looking for] Dac Gigawork new board	superluca71	Swap Meet	1	10th November 2010 11:58 AM
Do you have a Gigawork DAC? Is this a mistake?	ciagon	Digital Source	4	8th March 2010 04:29 AM

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