[Vintage-Audio] Update On AR-4 Info

Mon Jul 7 19:42:00 2003

Hello Duane.  No, it is AC.   Direct Current would do like your battery did,
causing the speaker diaphragm to move in ONE direction, which may make a
"pop", but not "audio".  It is very convenient for the audiophile to use the
markings as you have noted, and that is correct.  However, if you have a
stereo set up, just try this.  REVERSE the wires to both speakers.  You will
not hear a difference.   REVERSE only one.  Then, you will get the KARAOKE
effect, where parts of the song are "nulled", due to the out-of-phase
presentation of the sound waves. You will sometimes hear this on an FM
stereo broadcast, when the engineer mis-wired the hook ups to the board and
created this "null", which creates a funny sound, and if the input is
actually MONO, will drop the audio output quite low.
I am not trying to disagree with anybody, just sharing with this great
group.  I hope Robert McKee understands that!  After all, I hate to think
all my years of being in the stereo business, and then as a broadcast
engineer, do not go to waste!    Cheers .. hope all had a happy fourth of
july weekend, we did here, now ready for wife and I celebrating our number
forty three anniversary, on the tenth.   Mark
----- Original Message ----- 
From: "Duane Fischer, W8DBF" <[email protected]>
To: <[email protected]>
Sent: Monday, July 07, 2003 4:09 PM
Subject: Re: [Vintage-Audio] Update On AR-4 Info


> Bob,
>
> I would not call what he said exactly a 'flame', so let us not permit a
> discussion to get out of hand gentleman. We can agree to disagree and
still not
> short circuits.
>
> In my mind, the positive speaker terminal on the amplifier should go to
the
> positive terminal on the speaker.
>
> Isn't it DC to the speaker not AC?
>
>
>
> ----------
> From: Robert    J. McKee <[email protected]>
> To: [email protected]; [email protected]
> Subject: Re: [Vintage-Audio] Update On AR-4 Info
> Date: Monday, July 07, 2003 5:04 PM
>
> Not important???  What do you think puts the punch in any sound
> from a bass drum to a triangle... sucking or blowing?  Think about
> that for a bit before flaming.
> Bob McKee
>
>
>
> > [Original Message]
> > From: AA6DX <[email protected]>
> > To: <[email protected]>
> > Date: 7/7/03 4:57:02 PM
> > Subject: Re: [Vintage-Audio] Update On AR-4 Info
> >
> > I now remember.  Yes, this is the way the AR speakers were put together.
> > There were long, narrow  staples holding the grill in place.  That is
> > factory, Duane.
> > As you know, but I itereate, for those reading who may not know, the
> > polarity is not necessarily important, as long as both speakers are the
> > same, and hooked up the same, to keep them in phase. We are dealing with
> > alternating current here, but they both need to putting the oooom in the
> > oooom pah pah at the same time in the same direction.   In later years,
> when
> > replacing the components, most shops would put velcro on the grilles to
> > re-mount them.  Cheers, y'all .. Mark
> > ----- Original Message ----- 
> > From: "Duane Fischer, W8DBF" <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, July 06, 2003 3:21 PM
> > Subject: [Vintage-Audio] Update On AR-4 Info
> >
> >
> > >
> > >
> > > Hi All,
> > >
> > > Ok, the old blind wonder dude got into the adventurous mood and took a
> > serious
> > > squint at the AR-4's. The grill is held in place by six staples, three
> > down each
> > > side. The staple is long enough to go through the grill material, the
> wood
> > panel
> > > behind it and still hit the main wood of the cabinet. I can not state
> that
> > this
> > > is factory, but it certainly appears that way.
> > >
> > > When the cabinet is vertical, looking at it from the back, with two
> > speaker
> > > terminals vertical top to bottom and tweeter pot control just to their
> > right,
> > > the top terminal is negative and the bottom one is positive.
> > >
> > > Question: the suspension around the edge of the woofer speaker cone,
> what
> > is it?
> > > Is it supposed to be somewhat soft?
> > >
> > > FYI: I guessed the polarity right by ear. I tested it today with a
> battery
> > to be
> > > sure.
> > >
> > > Thanks.
> > >
> > > Duane W8DBF
> >
> >
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> > List Administrator: Duane Fischer, W8DBF
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>
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