Also, most of the tube type receivers had a push-pull output stage. P-P
stages have minimal 2nd and 4th order harmonics but have a generous amount
of 3rd & 5th order harmonics. 3rds and 5ths sound much better musically.
Ask any guitar player.
73
Bob K4TAX
----- Original Message -----
From: "Del Seay" <deljan@worldnet.att.net>
To: "Bill Ames" <bames@aob.com>; <tentec@contesting.com>
Sent: Monday, January 21, 2002 1:45 PM
Subject: Re: [TenTec] Ten-Tec External Speaker
> Re- Bills post: Have you ever wondered why the
> old tube type rigs has so much better "Presence"?
> He is correct. The tube type rigs had 10 watts or better
> audio output, transformer coupled to a large, inefficient
> but high quality speaker. Cost and size of gear has reduced
> receiver audio to the present stage of very low fidelity.
> de KL7HF
>
> ----- Original Message -----
> From: "Bill Ames" <bames@aob.com>
> To: <tentec@contesting.com>
> Sent: Monday, January 21, 2002 18:30
> Subject: RE: [TenTec] Ten-Tec External Speaker
>
>
> > I think that TT will provide a speaker that meets the interface
> requirements
> > for the Jupiter but I am concerned that it will not be as good as it
could
> > be because, I believe, you get better sound from speakers that are less
> > efficient and require some power to get the best results. Since the J
has
> > limited audio output power it can not drive these less efficient
speakers.
> I
> > do not see them adding any electronics to the new speakers, so, I am
> > prepared to be somewhat disappointed...
> >
> > Bill Ames
> > KB1LG
> >
> > -----Original Message-----
> > From: tentec-admin@contesting.com [mailto:tentec-admin@contesting.com]On
> > Behalf Of Bob KIrkland
> > Sent: Monday, January 21, 2002 10:30 AM
> > To: tentec@contesting.com
> > Subject: [TenTec] Ten-Tec External Speaker
> >
> >
> > The operations manual for the Jupiter specifies a 4 Ohm speaker should
be
> > used for external sound. As you know the audio output comes from a
> > transistor amplifier. In this type of audio amplifier it is important to
> > match the speaker impedance to the output impedance. If it is not
> > matched,inefficiency and distortion can occur especially at high volume
> > levels, and the amp has only 1 watt to begin with.
> > Bob, w5pvr@gower.net
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
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