Recent content by northstar

Archived from groups: rec.audio.tech (More info?) In article <1112687524.999637.201010@g14g2000cwa.googlegroups.com>, andy19191@fsmail.net says... > >> Then what is that expression as you see it? TIA > >Unless we know what you want this ratio to express this question is not >answerable. The...

Archived from groups: rec.audio.tech (More info?) In article <28H3e.15881$C12.4075@fe1.news.blueyonder.co.uk>, IanIveson.home@blueyonder.co.uk says... > >"Northstar" <xxx@yyy.zzz> wrote > >>>No. because, as I said there is no one "expression." > >> Sorry, but you are wrong. Mechanical power...

Archived from groups: rec.audio.tech (More info?) In article <1112394887.468090.248090@l41g2000cwc.googlegroups.com>, dpierce@cartchunk.org says... > >No. because, as I said there is no one "expression." Sorry, but you are wrong. Mechanical power factor is simply the ratio of mechanical...

Archived from groups: rec.audio.tech (More info?) In article <1112376682.030996.191980@f14g2000cwb.googlegroups.com>, dpierce@cartchunk.org says... > > >Northstar wrote: >> In article <1112343952.736126.293820@o13g2000cwo.googlegroups.com>, >> andy19191@fsmail.net says... >> >> >What Ian has...

Archived from groups: rec.audio.tech (More info?) In article <1112343952.736126.293820@o13g2000cwo.googlegroups.com>, andy19191@fsmail.net says... >What Ian has posted is a model of a full loudspeaker >from which you can extract anything you want. Then how do you derive the mechanical...

Archived from groups: rec.audio.tech (More info?) In article <iN_2e.7839$Nr5.7756@fe2.news.blueyonder.co.uk>, IanIveson.home@blueyonder.co.uk says... > >Don't know where this came from > >http://www.ivesonaudio.pwp.blueyonder.co.uk/driver1.gif > >Just to give an idea. > >Should the suspension...

Archived from groups: rec.audio.tech (More info?) >earlier chapter deriving the acoustical impedance of a piston. The >efficiency was considered for constant voltage, current and power >input. This is from memory but I have a reasonable level of confidence >I am not muddling things up. > >I am...

Archived from groups: rec.audio.tech (More info?) In article <1112298509.985729.316840@l41g2000cwc.googlegroups.com>, andy19191@fsmail.net says... > >You can derive an expression from an equivalent electrical circuit as >Ian suggests. You will need to know quite a lot about the mechanics of...

Archived from groups: rec.audio.tech (More info?) In article <1112142821.990423.125280@o13g2000cwo.googlegroups.com>, dpierce@cartchunk.org says... > > >Northstar wrote: >> Hi Mr. Pierce >> You seem quite knowledgeable on the aspects discussed here. >> Do you have an expression for the...

Archived from groups: rec.audio.tech (More info?) Hi Mr. Pierce You seem quite knowledgeable on the aspects discussed here. Do you have an expression for the mechanical power factor of a driver? TIA