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biscuitownz

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  5. Random Picture Post V2

    in Off Topic - Random, Misc posts - the forum "Junk Drawer"

    Posted

    Not yet, so far it's just the basic lm3886 chipamps in parallel along with the power supply part. I will be adding some other things to it tomorrow, once it's done I'll post a diagram. :)

    I was planning on getting something designed using that chip, or the LM3876, to have all of my speakers in my house have their own amplifier.

    Tell me how it ends up going!

    Edit: I had forgotten I had already got a design working for a 20W using the LM1875T to mess with, but never did.

    10286960_768079633202239_785048242278371

    Nice! You could probably use your design and run full active on all your speakers :nuts::nuts:

  14. Gain Matching Issue ?

    in SMD Crossover Callibrator (CC-1) Topics

    Posted

    But the DMM and the CC-1 are going about matching the gains slightly different from my understanding.

    I'm not sure how the CC-1 does it either. I just use it to set x-over points, never got around to using it for gain matching

    if you where to dyno the mismatched amp that requires more voltage to make the same power on the cc1 you would see the wattage would come out the same as the first amp, where as if you volt matched with a dmm as the first amp your dyno results would be different even tho they are reading the same voltage

    Ok, heres where I'm loosing it. I'm reading this as even though the voltage output is the same there will be a difference in wattage?

    I know it's tuff to explain. It's tuff to understand for me right now!! lol

    He's saying that since both amps will put out different power it's okay to have the voltage different from one another.

    If both amps were set at .5v and at that voltage one did 3kw and the other did 3.1kw then they wouldn't be the same.

    If you set the amps with your dd1/cc1 they will both do let's say 3kw. Although one amp may be saying .5v and the other will be showing something a little higher/lower.

    This is because the amps have different wattage ratings on the birthsheet.

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