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Started by edvard, June 09, 2018, 04:27:10 PM
QuoteQuote Paralleling *voltage* sources is a disaster waiting to happen. The additional condition that now gain must track each other within 1% or less, any volume, any frequency, plus NEEDING cheesy series resistors to somehow help speaks volumes about what a poor Engineering choice it is.
QuoteWell... maybe. Pretty much no really high power amplifiers in existence get by without emitter resistors. The emitter resistors are there to wash out the microscopic differences in Vbe.
Quote[...] The unit runs 2x LM3886 in parallel driving a 4 Ohm woofer and a single LM3886 for tweeter.[...] but that chip was too hot to touch and measured rail voltage on the output which obviously burnt out the tweeter.[...]No real heat sink except for a 6mm flange which is also bolted to outer alloy case.