Salas hotrodded blue DCB1 build - Page 125

Salas · 16th August 2011, 02:42 PM

Creative use of redundant positions, nice. With 12V reg straight to the input relays I think there were no erratic denials from the input selection actions in the MEZ.

cersepn · 17th August 2011, 03:13 PM

Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

Salas · 17th August 2011, 03:17 PM

You changed signal resistors to Texas and Caddock? Nice pic. Since the chassis floor is 4mm and the box normal size, better sink them there.

cersepn · 17th August 2011, 03:22 PM

Haha, actually that's not my dcb1. I stole it off someone else here

those vishays are definitely in the pipeline though

parodielin · 17th August 2011, 05:29 PM

By lvl1, did you mean using 10 ohm resistors for 200 mA?

Quote:

Originally Posted by cersepn

Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

cersepn · 17th August 2011, 06:38 PM

Yea, 10 ohm - 200 mA. Will that be a problem?

parodielin · 17th August 2011, 06:54 PM

Quote:

Originally Posted by cersepn

Yea, 10 ohm - 200 mA. Will that be a problem?

No, I'm thinking the same thing. My heatsinks is a bit bigger than yours. I don't plan to mount to the chassis and want to make sure it is OK. Now you reported "HOT". Would the DCB1 be stable?

Salas · 17th August 2011, 07:16 PM

Measure your sinks, if they don't go over 55C, they could make it. Punch ventilation holes on the box under and top of them.

Marra · 17th August 2011, 07:47 PM

Quote:

Originally Posted by cersepn

Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

Would it be a good idea to heatsink the 10 ohm caddocks?

Tea-Bag · 17th August 2011, 07:49 PM

Quote:

Originally Posted by Marra

Would it be a good idea to heatsink the 10 ohm caddocks?

Yes, otherwise they are typically 2W's.

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16th August 2011, 02:42 PM	#1241
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Creative use of redundant positions, nice. With 12V reg straight to the input relays I think there were no erratic denials from the input selection actions in the MEZ.

17th August 2011, 03:13 PM	#1242
cersepn diyAudio Member Join Date: Feb 2010	Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

17th August 2011, 03:17 PM	#1243
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	You changed signal resistors to Texas and Caddock? Nice pic. Since the chassis floor is 4mm and the box normal size, better sink them there.

17th August 2011, 03:22 PM	#1244
cersepn diyAudio Member Join Date: Feb 2010	Haha, actually that's not my dcb1. I stole it off someone else here those vishays are definitely in the pipeline though

17th August 2011, 06:38 PM	#1246
cersepn diyAudio Member Join Date: Feb 2010	Yea, 10 ohm - 200 mA. Will that be a problem?

17th August 2011, 07:16 PM	#1248
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Measure your sinks, if they don't go over 55C, they could make it. Punch ventilation holes on the box under and top of them.