DCB1 TURBO BUILD @600Ma

[STD305M]

Hi Oliver

I guess we need to put down the Audio Note resistors change in mine going back to the dale due to either the difference in equipment used or differences in our ears mate

Really pleased for you....

S.

[sq225917]

There's a lot of bang-tidy on that box Oli. Trim or twist those signal wires tho...

[Bigman80]

There's a lot of bang-tidy on that box Oli. Trim or twist those signal wires tho...

Thanks Si,

Between the selector switch and inputs?

[STD305M]

Hi All

Dcb1 sold, now i can start my new build.
I'm building a dual mono DCB1.
Will start a new thread .

Thanks oliver for being a pain in the arse and starting me on this path.
Thanks Alan for being so cleaver and the help you gave. Couldn't have managed otherwise, and to all who followed the thread. CHEERS

Steve.

[Bigman80]

Hi All

Dcb1 sold, now i can start my new build.
I'm building a dual mono DCB1.
Will start a new thread .

Thanks oliver for being a pain in the arse and starting me on this path.
Thanks Alan for being so cleaver and the help you gave. Couldn't have managed otherwise, and to all who followed the thread. CHEERS

Steve.

you're welcome mate. Anytime

Good luck with the new build.

[keith1962]

Looks excellent Oliver. So running at 1.2 just using the bottom of the case for the Fets but extra heat sinking for the MUR820?
What value of resistor get 1.2a. I think Steve has advised that 1R4 will get about 600 or 700 ish?
Now this whole thing heads off in another direction with Steve's dual mono!!!

[Bigman80]

Looks excellent Oliver. So running at 1.2 just using the bottom of the case for the Fets but extra heat sinking for the MUR820?
What value of resistor get 1.2a. I think Steve has advised that 1R4 will get about 600 or 700 ish?
Now this whole thing heads off in another direction with Steve's dual mono!!!

Hi Keith,

Thanks!! Although without a little help from the main man, I'd still be stuck.

So, if I recall correctly, there's

0.33R, 0.47R & 0.68R of the left side

0.33R & 0.68R on the right side.

This is due to some sort of imbalance between the channels. I have put this down to the FETs not being matched.

Obviously, unless you know how to measure the output, you'll be guessing!

Heat dissipation is done via the casework only BUT I noticed the heat increased when I put the CDP on top. It's warm but not hot. I have had it on all day and id happily let a baby touch it. It's not hot in the slightest. I'm happy with the temperature.

The MUR860 required some additional heat dissipation in Alan's opinion and I'm in no mind to disagree.

[Firebottle]

0.8 ohms for the positive side, made up from 0.33 + 0.47.

0.91 ohms for the negative, made up from 0.33 + 0.68, with a 10 ohm in parallel.

The MUR820's could go on the case as well.

[Bigman80]

0.8 ohms for the positive side, made up from 0.33 + 0.47.

0.91 ohms for the negative, made up from 0.33 + 0.68, with a 10 ohm in parallel.

The MUR820's could go on the case as well.

That's it I knew they were different.

[keith1962]

Is the measuring just done with a multi meter? Across which points? I will probably go for 1r2 or 1r4 to get between 600 and 800. Was just going to trust that mine had been built with matched Fets but will measure to get values accurate if it is easy enough?
Keith