|Chip Amps Amplifiers based on integrated circuits|
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|15th September 2019, 02:43 PM||#1|
Join Date: Sep 2019
Matching amp to speakers.
I wan to build an amp from a broken bose sounddock.
I have two hi-fi bose 273488004 "twiddler" speakers.
Bose SoundDock Series II internals - What's Inside
I've been told their 8ohms impedance in forums, but ebay says 4.6 in multiple listings, i've seen 18w per channel (speker, i assume), also 36W, also 10W.
If wired in paralel, i thought they would need <36w and 4ohm impedance.
i wanted to use this chip -( 35W TDA8932 Digital Amplifier Board ), but the power supply says "24V output 2A power supply", and for the speakers " The power supply of the SoundDock is providing a supply voltage of +/-18V", so they need a +-18V AC power supply?
I need to figure out whether to wire in series on parallel, as that will determine the specs of the amp circuit i need, but for that i need to know the specs of the speakers individualy.
So you understand why i'm confused on how to proceed.
this is a project with same speakers DIY Column speaker for PA use
but i can't find their individual specs in there.
Sorry, i work with guitar electronics, so i'm new to this level of circuit design
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