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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="jami schorling" data-source="post: 216575" data-attributes="member: 13511"><p>As mentioned <a href="https://soundforums.net/community/threads/60-degree-diy-mid-hi-aka-pm60.12390/page-24#post-148200" target="_blank">here </a>and <a href="https://www.diyaudio.com/community/threads/b-c-dcx464.335600/page-9#post-5914526" target="_blank">here</a>, the 16 Ohms version will have less noise. The DCX464 is really sensitive. With the 16 Ohm version, I still get quite noticeable hiss. In PA settings, this is no problem, but for hifi, it would be too loud, imho.</p><p></p><p></p><p>No, you could go with less. 1.5 to 2 times RMS power is a rule of thumb. You want to have enough reserve on the amp to secure headroom. Otherwise, you might too easily drive the amp into clipping. The signal then gets compressed and the speaker likely gets damaged.</p><p></p><p></p><p>Not sure, what you are referring to. Do you mean powering to cabs with one crossover? Is your question, if the 16 Ohms HF + 16 Ohms VHF of the coax are wired in parallel on the FB464 crossover = 8 Ohms impedance for the amp channel?</p></blockquote><p></p>
[QUOTE="jami schorling, post: 216575, member: 13511"] As mentioned [URL='https://soundforums.net/community/threads/60-degree-diy-mid-hi-aka-pm60.12390/page-24#post-148200']here [/URL]and [URL='https://www.diyaudio.com/community/threads/b-c-dcx464.335600/page-9#post-5914526']here[/URL], the 16 Ohms version will have less noise. The DCX464 is really sensitive. With the 16 Ohm version, I still get quite noticeable hiss. In PA settings, this is no problem, but for hifi, it would be too loud, imho. No, you could go with less. 1.5 to 2 times RMS power is a rule of thumb. You want to have enough reserve on the amp to secure headroom. Otherwise, you might too easily drive the amp into clipping. The signal then gets compressed and the speaker likely gets damaged. Not sure, what you are referring to. Do you mean powering to cabs with one crossover? Is your question, if the 16 Ohms HF + 16 Ohms VHF of the coax are wired in parallel on the FB464 crossover = 8 Ohms impedance for the amp channel? [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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