Salas hotrodded blue DCB1 build - Page 30

Malka07 · 11th September 2010, 08:21 PM

Looks Great Oliver

But i dont think it will be long before it really becomes hotrodded

At the moment im running my DCB1 at 350ma...and it sounds so much better.

Cant wait to hear your impressions.

Alon

Nick77 · 11th September 2010, 09:27 PM

Dvb sweet looking board!! Where did you source those cool looking heat sinks? Anyone know?

dvb projekt · 12th September 2010, 07:35 AM

The Heatsinks are from Fischer Electronic typ SK68.

I use the 75mm version and shorted it to 60mm, so they fit perfect to the mosfet´s.

Marra · 12th September 2010, 07:28 PM

I wired up my Hypno this afternoon; single input and the output through two 4uf wondercaps as neither my Aleph 5 or F5 has an input cap. The p/s voltageswere 9.6 & -9.58v with dc offsets less than a mv[as posted previously].When I checked the dc offset after the caps I had readings of 26mv and 100mv which slowly dropped towards zero if I held the probes there.
Can anyone explain this to me please and is it a problem?
Thanks in advance.
Marra

Salas · 12th September 2010, 07:34 PM

Use 1Meg resistors from cap output to ground. The probes played the role of such resistors.

Marra · 12th September 2010, 07:42 PM

But aren't there already 1Meg resistors on the pcb?

Salas · 12th September 2010, 07:44 PM

On the DC out, now you put a cap after it, its other end is floating.

Marra · 12th September 2010, 07:52 PM

Thank you Salas; now I understand. Still learning. Two resistors it is.

Salas · 12th September 2010, 07:56 PM

It would actually zero when you connect to the amps load, but its not good to have a charge and then connect, accidents happen if an amp is forgotten on for instance and there is a discharge thump with DC component too.

Marra · 13th September 2010, 09:26 AM

I added the 1Meg resistors after the output cap and everything is as it should be. The blue hypno is now connected in my system and making good music. If first listen is anything to go by I'm really going to enjoy owning this buffer; so dynamic and the bass.......

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11th September 2010, 08:21 PM	#291
Malka07 diyAudio Member Join Date: Mar 2009	Looks Great Oliver But i dont think it will be long before it really becomes hotrodded At the moment im running my DCB1 at 350ma...and it sounds so much better. Cant wait to hear your impressions. Alon

11th September 2010, 09:27 PM	#292
Nick77 diyAudio Member Join Date: Dec 2009 Location: Austin Tx	Dvb sweet looking board!! Where did you source those cool looking heat sinks? Anyone know?

12th September 2010, 07:28 PM	#294
Marra diyAudio Member Join Date: Nov 2009 Location: Near Lincoln	I wired up my Hypno this afternoon; single input and the output through two 4uf wondercaps as neither my Aleph 5 or F5 has an input cap. The p/s voltageswere 9.6 & -9.58v with dc offsets less than a mv[as posted previously].When I checked the dc offset after the caps I had readings of 26mv and 100mv which slowly dropped towards zero if I held the probes there. Can anyone explain this to me please and is it a problem? Thanks in advance. Marra

12th September 2010, 07:34 PM	#295
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Use 1Meg resistors from cap output to ground. The probes played the role of such resistors.

12th September 2010, 07:42 PM	#296
Marra diyAudio Member Join Date: Nov 2009 Location: Near Lincoln	But aren't there already 1Meg resistors on the pcb?

12th September 2010, 07:44 PM	#297
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	On the DC out, now you put a cap after it, its other end is floating.

12th September 2010, 07:52 PM	#298
Marra diyAudio Member Join Date: Nov 2009 Location: Near Lincoln	Thank you Salas; now I understand. Still learning. Two resistors it is.

12th September 2010, 07:56 PM	#299
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	It would actually zero when you connect to the amps load, but its not good to have a charge and then connect, accidents happen if an amp is forgotten on for instance and there is a discharge thump with DC component too.

13th September 2010, 09:26 AM	#300
Marra diyAudio Member Join Date: Nov 2009 Location: Near Lincoln	I added the 1Meg resistors after the output cap and everything is as it should be. The blue hypno is now connected in my system and making good music. If first listen is anything to go by I'm really going to enjoy owning this buffer; so dynamic and the bass.......