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RE: Whole House Audio 64 ohm speakers
- To: <ukha_d@xxxxxxx>
- Subject: RE: Whole House Audio 64 ohm speakers
- From: "Mick Furlong" <dorsai@xxxxxxx>
- Date: Thu, 2 Aug 2001 20:53:03 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
thanks Keith now 100% clear!
Mick
> -----Original Message-----
> From: Keith Doxey [mailto:ukha@xxxxxxx]
> Sent: 02 August 2001 20:07
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Whole House Audio 64 ohm speakers
>
>
> Hi Mick,
>
> Thats exactly what I meant.
>
> Yes the impedance will change but the lowest it will ever get to
> is 8 ohms.
>
> speakers impedance
>
> 1 64
> 2 32
> 3 21.3
> 4 16
> 5 12.8
> 6 10.7
> 7 9.1
> 8 8
>
> the problem with 8 ohm speakers is that 2 will bring you down to
> 4 ohms, the
> minimum for most amps. To connect 4 you would need to put 2 in series
with
> each other, then the other two in series giving two 16 ohm
> chains, then put
> them in parallel to bring it back down to 8 ohms
>
> ------------------------------
>
> AMP SPK SPK
>
>
> SPK SPK
>
> ------------------------------
>
> Solid state amplifiers are perfectly happy with a higher impedance or
even
> open circuit. Valve amplifiers MUST NEVER be run open circuit as very
high
> voltages appear on the speaker terminals and flashover occurs inside
the
> valves. No amplifier should ever be run with a load of a lower
impedance
> than the rated minimum as it risks destroying the amp.
>
> Keith
>
>
> > -----Original Message-----
> > From: Mick Furlong [mailto:dorsai@xxxxxxx]
> > Sent: 02 August 2001 19:45
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] Whole House Audio 64 ohm speakers
> >
> >
> > Thanks for the response Keith...quality isn't that important as
> the prime
> > use is for announcements. I prefer to keep music and
> > announcements seperate.
> > I believe I understand your advice about wiring them in parallel
like
> > this..........
> >
> > -----------------------------------------------------
> >
> > AMP SPK SPK SPK SPK x 8
> >
> > -----------------------------------------------------
> >
> > .....and then the same for the other channel if stereo.
> >
> > But I am not sure what you mean by switching them in and out,
that will
> > change the impedance won't it? I thought you had to worry about
that?
> >
> > Cheers
> > Mick
> >
> >
> > > -----Original Message-----
> > > From: Keith Doxey [mailto:ukha@xxxxxxx]
> > > Sent: 02 August 2001 12:28
> > > To: ukha_d
> > > Subject: RE: [ukha_d] Whole House Audio 64 ohm speakers
> > >
> > >
> > > Not at all....they could be ideally suited.
> > >
> > > 8 x 64 ohm speakers in parallel would give 8 ohms.
> > >
> > > You could add 8 different rooms to one amplifier and simply
> > > switch speakers
> > > on and off without worrying about the impedance. (As long as
you
> > > dont use a
> > > Valve Amp.)
> > >
> > > The big question is.....how do they sound ?
> > >
> > > Keith
> > >
> > > -----Original Message-----
> > > From: dorsai@xxxxxxx [mailto:dorsai@xxxxxxx]
> > > Sent: 02 August 2001 11:21
> > > To: ukha_d@xxxxxxx
> > > Subject: [ukha_d] Whole House Audio 64 ohm speakers
> > >
> > >
> > > Am I right in thinking that 64 ohm speakers would be of no
use
> > > whatsoever for whole house audio?
> > >
> > > Mick
> > >
> > >
> > >
> > >
> > > ____________________________________
> > > Automated Home UK
> > > http://www.automatedhome.co.uk
> > > ____________________________________
> > >
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> > >
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> >
> >
> >
> >
> >
> >
> > ____________________________________
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> > http://www.automatedhome.co.uk
> > ____________________________________
> >
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>
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