[Jukebox-list] Seeburg Teardrop RS1-8 Speaker Hookup

[Edward Hink]

I just now got my Seeburg Teardrop speaker hooked up thanks to David
Breneman.  Both the main and the teardrop sound great together.  I painted
the speaker an ivory color and cleaned the original grill cloth with ammonia
and water and it looks great.  I cannot remember who suggested this, but
thanks as well.  In order to not fray the original cloth while cleaning it,
I used "Liquid Stitch" on the edges, available at fabric stores, and it sure
helped.

I acquired my C about 10 years ago and it's all original except for the
plastic pilasters and of course the new title strip plastics and grill
cloth.  The box was painted a metallic brown with new kick strips and tacks.
Bill Bickers gave the amp a minor tune up several months ago and it sounds
great. I'm working with Glenn Strope on a selection problem with the "J" &
"K" buttons.  I'm a little intimidated with removing the pinbank for service
right now. Glenn says it's probably a broken wire in the pin bank or Jones
plug.
 

Ed Hink
Bellevue, Nebraska



On 6/18/07 10:36 AM, "Edward Hink" <hink4 at cox.net> wrote:

> Dave
> 
> Thanks very much for confirming my limited knowledge. I'll let all know how
> it sounds when I get it hooked up.
> 
> Additional question for all:
> 
> The speaker was originally ivory color but had a poor paint job in a hideous
> green (not Seeburg).  The speaker grill cloths appear original and in
> excellent shape, however have darkened with age and lots of smoke and
> nicotine, can I somehow clean the cloth? Best way?  If not, what would be
> the most original cloth to use if I plan to repaint the body of the speaker
> the turquoise available for the C from Victory Glass, which I assume is
> close to the original mech cover on the C? To me, the mech cover is more a
> blue than turquoise? The cloth (under the chrome trim) is a darker gold
> color with a  vertical pattern.  Any thoughts?
> 
> Thanks again
> 
> Ed Hink
> Bellevue, Nebraska
> 
> 
> On 6/16/07 8:37 PM, "David Breneman" <david_breneman at yahoo.com> wrote:
> 
>> 
>> --- Edward Hink <hink4 at cox.net> wrote:
>> 
>>> The service manual appears to say I do not need an additional
>>> amplifier and
>>> to wire it from either the "C" & "1" or the "C" & "4"  terminals
>>> on the
>>> terminal board to the  "1" & "2" terminals on the speaker.
>> 
>> 1 and 2 are the 70v connection points, and 4 and 5 are the 8 ohm
>> connection points on the speaker.  C and 1, and C and 4 are the
>> 1 and 4 watt output terminals on the amp, so yes, you're
>> reading it right.
>> 
>>> Should I remove the jumper wire between terminals 3 & 4 on the
>>> speaker?
>> 
>> According to the wiring diagram, that jumper connects one
>> line of the voice coil to the 70v stepdown xfmr in the speaker
>> enclosure, so if you are using it as an 8 ohm speaker, which
>> you *can't* do with this machine, yes. You're going to be using
>> it as a 70v speaker, so no.
>> 
>>> What gauge wire should I use for about a 6 ft speaker run?
>> 
>> Just regular 18 ga zip cord, like you'd wire a table lamp with.
>> Or, $5000 Monster Cables if you're an idiot.  :-)
>> 
>>> The manual says while the older Type RS speakers may be used on the
>>> 100C the
>>> Type RS are recommended because of their volume control and
>>> WARNING: NEVER
>>> connect 8 ohm speakers directly to the terminal board of the
>>> amplifier!  I
>>> assume it is referring to the Type CV speakers and not to the Type
>>> RS?
>> 
>> Looking at the manual pages I have, all RS series speakers
>> can be wired 70v (which they also refer to as 500 ohm) or
>> 8 ohm.  Make sure you're not mixing up the two types of
>> circuit in your mind.  70 volts will probably blow out a
>> transformerless 8 ohm speaker, ergo the warning.  The
>> amplifier in the M100-C does *not* have an 8 ohm remote
>> speaker output.  The Symphonolas, which were the machines
>> produced when these speakers first came out, do.  The CV
>> series speakers have taps on their xfmrs which are selected
>> with jumper wires, and which determine how many watts each
>> speaker draws.  The RS speakers can draw either 1 or 4
>> watts, depending on which terminals (C with 1 or 4) they're
>> connected to on the amplifier.  That's why there's two
>> type of connection - the CV terminals are relying on each
>> speaker to "tell" the machine how much power to send it
>> (via which xfmr tap is selected on the speaker).  With
>> the RS speakers, the machine "tells" the speaker how much
>> power it's going to get based on whether it's connected to
>> the 1 or 4 terminal on the amp.
>> 
>>> Do I set the select-o-matic speaker switch to what sounds best?
>> 
>> This switch controls the volume of the phonograph relative
>> to the remote speakers.  This gets into the whole issue of
>> how many watts the amp puts out vs how many watts the
>> speakers are drawing.  If the total wattage of the speakers
>> exceeds the output of the amp, it can damage the amp.  25
>> is the max, so add the number on the speaker switch, which
>> is how many watts the internal speaker will draw, to the
>> total of all remote speakers (you'll have one set at 4 watts,
>> I assume) and make sure the total is less than 25.
>> 16 + 4 = 18, so you're safe with that switch set all the
>> way up at 16, or you can set it lower if you want the remote
>> speaker louder relative to the phonograph (but the total
>> volume will be lower, too).
>> 
>>> What Ohm do I set the selection speaker switch to?  8 ohm? From the
>>> 16 ohm I'm running the main speaker on?
>> 
>> You're confusing ohms with watts.  If you're talking about the
>> switch above, that's watts not ohms.  Ohms really don't
>> enter into it when you're talking about 70v systems, except
>> that the engineer that designed the speaker needs to make
>> sure the impedance of the speaker matches the output of the
>> transformer in the speaker cabinet.  That's not our problem.
>> Just put ohms out of your mind - that's home stereo stuff.
>> We're talking a commercial sound system here, and the
>> way of doing things is different for a whole host of reasons
>> we have better things to do on a Saturday evening than go
>> into the theoretical stuff over.
>> 
>> 
>> 
>> David Breneman         david_breneman at yahoo.com
>> 
>> 
>>  
>> 
_____________________________________________________________________________>>
_
>> ______
>> No need to miss a message. Get email on-the-go
>> with Yahoo! Mail for Mobile. Get started.
>> http://mobile.yahoo.com/mail
>> _______________________________________________
>> Jukebox-list mailing list
>> Jukebox-list at lists.netlojix.com
>> http://lists.netlojix.com/mailman/listinfo/jukebox-list
> 
> 
> _______________________________________________
> Jukebox-list mailing list
> Jukebox-list at lists.netlojix.com
> http://lists.netlojix.com/mailman/listinfo/jukebox-list