[Vintage-Audio] Re: [Vintage] Re Scott Amp Speaker Designations

Mon Aug 12 03:20:00 2002

Just looked at a Scott LK-48B schematic. Left and Right Channels also
have terminals labeled H and O. O terminal of each channel goes to the 0
ohms point of each output transformer. The H terminal of each channel has
a wire that you attached to one of three screw output points, 4 ohms, 8
ohms, 16 ohms of the output transformer. Since the 4, 8, 16 ohm points
are at a "higher" signal level then the 0 ohm point, the 'H" terminal
designation seems very appropriate. This obliviously aids in connecting
your speakers properly in phase. I could run down to the file cabinet and
pull the manual and see that they say about the connections, but I'm not
that ambitious. 
Pete

On Sun, 11 Aug 2002 23:01:38 -0400 "Duane Fischer, W8DBF"
<[email protected]> writes:
> Hmmm. Well Peter, maybe the "H" stand for the first name, as in "H. 
> Scott"?
> (grin) Now to be perfectly honest with you Pete, my best Braille 
> finger could
> not tell if it was an "O" or a "0". With enough wear, heck it might 
> be a "Q"
> with a missing tail! What is next, new color code schemes? Pink is 
> positive,
> Nightshade is negative, Grout Gray is ground and Corn Blight Yellow 
> is center?        
>         
> Duane W8DBF        
> 
> 
> ----------
> From: [email protected]
> To: [email protected]
> Subject: Re: [Vintage-Audio] Re Scott Amp Speaker Designations
> Date: Sunday, August 11, 2002 10:22 PM
> 
> You sure the "O" is not a Zero, to signify zero potential, ground
> potential, common ground, etc. The "H" to signify high side, not 
> the
> ground side, the "hot" side, etc. Maybe the designer liked these 
> quirky
> symbols for the speaker connections.
> Pete
> P M
> 
> 
> On Sun, 11 Aug 2002 20:55:27 -0400 "Duane Fischer, W8DBF"
> <[email protected]> writes:
> > You skirted the issue. Why did they use these particular letters? 
> It 
> > was not
> > just an alphabetic random selection. They had a thought in mind, 
> > what was it?
> > 
> > ----------
> > From: JM/CO <[email protected]>
> > To: [email protected]
> > Subject: Re: [Vintage-Audio] Re Scott Amp Speaker Designations
> > Date: Sunday, August 11, 2002 8:50 PM
> > 
> > Just a different convention, that's all. They could have been 
> > labeled "cold
> > and hot" and you would still get the idea. Equate "O" as ground.
> > Yes, use a chassis screw for ground.
> > Chuck NiLNH
> > -----Original Message-----
> > From: Duane Fischer, W8DBF <[email protected]>
> > To: [email protected] <[email protected]>
> > Date: Saturday, August 10, 2002 12:17 PM
> > Subject: [Vintage-Audio] Re Scott Amp Speaker Designations
> > 
> > 
> > >
> > >
> > >The H. Scott LK-72b stereo amplifier uses "O" and "H" to designate 
> 
> > their
> > speaker
> > >terminal connections. Why? Why not positive and negative?
> > >
> > >Additionally, I was surprised they did not provide a ground 
> > terminal for
> > the
> > >turntable/record changer. I guess one just uses a chassis screw, 
> 
> > heh?
> > >
> > >Duane Fischer, W8DBF
> 
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