ok, that makes sence.
73
Colin, V A6BKX
----- Original Message -----
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, September 06, 2007 8:28 AM
Subject: Re: OT stereo question
> Colin,
>
> The impedance is based on an alternating current, and it varies with
> frequency. In a complete set of specs on a speaker, they usually talk
about
> a nominal impedance of 8 ohms because the actual impedance depends on the
> frequency.
>
> Steve
>
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, September 05, 2007 13:13
> Subject: Re: OT stereo question
>
>
> > ah, yes of course.
> > I suppose the reactance comes when a signal is sent into the speaker and
> > adjetates the coil right?
> > 73
> > Colin, V A6BKX
> > ----- Original Message -----
> > From: "Steve Dresser" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Wednesday, September 05, 2007 11:02 AM
> > Subject: Re: OT stereo question
> >
> >
> >> Colin,
> >>
> >> Measuring speaker impedance with an Ohm meter doesn't give you an
> >> accurate
> >> reading because an ohm meter measures resistance, not impedance, which
is
> > a
> >> combination of resistance and reactance.
> >>
> >> Steve
> >>
> >> ----- Original Message -----
> >> From: "Colin McDonald" <[log in to unmask]>
> >> To: <[log in to unmask]>
> >> Sent: Wednesday, September 05, 2007 12:53
> >> Subject: Re: OT stereo question
> >>
> >>
> >> > most home audio amplifiers are fine down to four ohms.
> >> > If you can find the manual for your sherwood, it'll let you know what
> > the
> >> > minimum impedance load should be per channel.
> >> > Its an interesting fact that speakers rated at 8 ohms often check out
> > with
> >> > an ohm meter at an ohm or two less then their rated impedance.
> >> > Sometimes this is because while in operation, they are rated at 8ohms
> >> > or
> >> > show an 8ohm load to the amplifier, but when nothing is being sent
into
> >> > them, they are slightly less.
> >> > Then you get crap speakers that are rated at 4 or 8 ohms, and show a
32
> >> > ohm
> >> > impedance...I bought a 12 inch sub rated at 1000 watts from a
> > liquidation
> >> > depot and when i finally got my ohm meter and tested the impedance of
> > the
> >> > speaker, it showed 32 ohms....not terribly good for a 1000 watt car
> >> > amplifier rated at 4 ohms.
> >> > I guess that's what happens when you only pay 15 bucks for such an
> >> > item.
> >> > 73
> >> > Colin, V A6BKX
> >> > ----- Original Message -----
> >> > From: "Robert Clark" <[log in to unmask]>
> >> > To: <[log in to unmask]>
> >> > Sent: Tuesday, September 04, 2007 8:19 PM
> >> > Subject: OT stereo question
> >> >
> >> >
> >> >> Well I hope I did the right thing, ordered a Sherwood stereo
> >> >> receiver.
> >> >> Quewastion I ahve is, I have 2 pairs of speakers which are 6 ohms.
> >> >> Should
> >> > I
> >> >> bother with them, get matching transformers, or look for 8 ohm
> > speakers?
> >> >>
> >> >> *---* *---* *---* *---* *---*
> >> >> Money can't buy you happiness. but it does bring you a more pleasant
> > form
> >> > of
> >> >> misery.
> >> >> -- Spike Milligan
> >> >> Robert & Dreamer Doll ke7nwn
> >> >> Newport, Oregon
> >> >> N24C 3G 8/2000 Hookup
> >> >> [log in to unmask]
> >> >> http://webpages.charter.net/dog_guide/
> >> >>
> >> >>
> >> >> --
> >> >> No virus found in this incoming message.
> >> >> Checked by AVG Free Edition.
> >> >> Version: 7.5.485 / Virus Database: 269.13.5/988 - Release Date:
> > 9/4/2007
> >> > 9:14 AM
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >>
> >>
> >> --
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> >> Checked by AVG Free Edition.
> >> Version: 7.5.485 / Virus Database: 269.13.5/990 - Release Date:
9/4/2007
> > 10:36 PM
> >>
> >>
> >
> >
> >
>
>
> --
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> Checked by AVG Free Edition.
> Version: 7.5.485 / Virus Database: 269.13.7/992 - Release Date: 9/6/2007
8:36 AM
>
>
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