Commercial Gainclone kit- building instructions - Page 102

Peter Daniel · 13th February 2010, 02:26 AM

Yes, all pots are wired the same, most of them have 3 pins though.

Peter Daniel · 13th February 2010, 02:27 AM

Quote:

Originally Posted by Wavne

So, if I run it in stereo or parallel I can used unbalanced inputs? I know parallel is recommended for 4ohm speakers but can it be run this way with an 8ohm load? That was my only reason for using bridged mode is my speakers are 8ohms.

Yes, unblanaced signal is fine with stereo or parallel configuration. Also, 8hm load is perfectly fine here, as it's easier to drive.

Wavne · 13th February 2010, 03:30 AM

Peter, thank you for your patience. Hopefully this will be my last question regarding this.

If running in parallel:
1) install jumper, R8, and R9

2)Regarding inputs. Being there is now a jumper, do I use just the Red IN and associated SG or do I split the positive side between both IN's and SG between both SG's?

3)Red OUT goes to + side of speaker and OG to - side of speaker?

Peter Daniel · 13th February 2010, 05:26 AM

When in parallel, install jumper, R8, R9, Do not install R0.
Use red IN and any of SG's (as they are connected anyway). For output, red OUT (//) and OG for output ground.

Wavne · 13th February 2010, 05:42 AM

Ok, got it...Thanks

braden · 13th February 2010, 05:46 PM

Hello, I've been reading this thread as well as this tutorial and can't seem to figure out what to solder to what.

Right now I have both reds soldered together and both blacks solders together as well. I don't want to risk damaging these transformers so if someone could clarify this for me please it would be greatly appreciated.

Here is a picture.

udailey · 13th February 2010, 06:42 PM

That transformer wont work. You have 22V secondary and 220V secondary. Wont work. If you had 22V and 22V that would be fine and you would tie the middle blue/green together to get a 0V for power ground.
Uriah

Peter Daniel · 13th February 2010, 06:52 PM

Quote:

Originally Posted by braden

Here is a picture.

Are you sure it's not a typo? Such secondaries configuration is rather strange.
Don't tie secondaries together but use them separately with my kits.

Anyway, connect primaries in parallel (reds together and blacks together) and measure secondaries first.

braden · 14th February 2010, 04:09 PM

I got 22.3V on the secondaries, most definitely a typo in that image.

Wavne · 15th February 2010, 10:40 PM

I have both boards built. One has a dc offset of 118mv and the other 0.1mv. The second one has no output but the chip does get hot. Any advice would be appreciated.

13th February 2010, 02:26 AM	#1011
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Yes, all pots are wired the same, most of them have 3 pins though. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

13th February 2010, 06:42 PM	#1017
udailey Passive Aggressive diyAudio Member Join Date: Mar 2008	That transformer wont work. You have 22V secondary and 220V secondary. Wont work. If you had 22V and 22V that would be fine and you would tie the middle blue/green together to get a 0V for power ground. Uriah __________________ You can purchase LDRs anytime to build a standard LDR attenuator or to build my new LDR Attenuator "A Lighter Note". Email me. diyldr@gmail.com

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13th February 2010, 03:30 AM	#1013
Wavne diyAudio Member Join Date: Oct 2007 Location: Chatham ON	Peter, thank you for your patience. Hopefully this will be my last question regarding this. If running in parallel: 1) install jumper, R8, and R9 2)Regarding inputs. Being there is now a jumper, do I use just the Red IN and associated SG or do I split the positive side between both IN's and SG between both SG's? 3)Red OUT goes to + side of speaker and OG to - side of speaker?

13th February 2010, 05:42 AM	#1015
Wavne diyAudio Member Join Date: Oct 2007 Location: Chatham ON	Ok, got it...Thanks

13th February 2010, 05:46 PM	#1016
braden diyAudio Member Join Date: Jan 2007 Location: Ontario	Hello, I've been reading this thread as well as this tutorial and can't seem to figure out what to solder to what. Right now I have both reds soldered together and both blacks solders together as well. I don't want to risk damaging these transformers so if someone could clarify this for me please it would be greatly appreciated. Here is a picture.

14th February 2010, 04:09 PM	#1019
braden diyAudio Member Join Date: Jan 2007 Location: Ontario	I got 22.3V on the secondaries, most definitely a typo in that image.

15th February 2010, 10:40 PM	#1020
Wavne diyAudio Member Join Date: Oct 2007 Location: Chatham ON	I have both boards built. One has a dc offset of 118mv and the other 0.1mv. The second one has no output but the chip does get hot. Any advice would be appreciated.