[TenTec] Why Stop Here ? MFJ Cleartone replacement
David E. Shelton
ku4it@bellsouth.net
Thu, 12 Feb 1998 18:32:10 -0500
Part of the reasoning for switching to the Cleartone speaker is to use the
stock enclosure of the PS or Hercules II amp. I also want to point out that the
larger speakers you mentioned would give you better dynamic range but remember
that dynamic range is not what you want if you are a CW operator as am I. The
other problem is the lack of power, watts, to drive the speaker as specs
require. You are sort of pushing it a little with the Cleartone speaker as it
is rated for 5W min, and it would perform even better with a full 5W. The Omni
VI+ and most other Ten Tec rigs use about 1 to 1.5 watts audio output at 4
ohms, this is consistent with most HF rigs today. As most of us run our rigs
with the AF knob rarely turned past the 10 o'clock setting the power of audio
output is very minimal <0.5W most of the time. In this case remember you're not
in Texas or maybe you are but regardless BIGGER is not BETTER, in this
particular situation.
Richard Dean Young wrote:
> Hello All,
>
> I am sure that this replacement is an improvement over the original
> speaker,but why stop with this half solution? I experimented with
> five or six different speakers, and found that the larger 5-6 inch
> speakers have much better sound than all of the smaller ones.Of course
> they did not fit in the rig or the power supply,but for the better sound
> quality I was willing to make room for a small speaker case on the shelf
> right above the rig.I started with small "Boom Box" speakers and small
> stereo speakers already in their small cabinets,and any others I could
> find.I finally found a pair of small Panasonic stereo speakers at a
> second hand shop for about $4.00.They are mounted in small wooden cabinets
> about 8"x6"x6"(H x W x D) in size.When I tried one plugged in to my
> Omni VI,I knew my search was over,great sound.I found some of the newer
> super High-Tech speakers had to much treble,and reproduced the static and
> hiss too well.The best sounding small speaker I have found is in my
> GE SuperRadio,but I'm not about to strip it out,it is too good of a
> MW DX Radio to tear up.If I ever find a junk one I will not hesitate to
> give it a try.
> What sounds perfect to one,is often not to someone else.So do what I
> did and play around a little.You might be pleasantly suprise by what
> you hear,and what you don't hear.
>
> 73 Good sounds comes in small boxes,
>
> Dean KR4IU ..._._
>
>
> At 08:51 PM 2/11/98 -0500, David E. Shelton wrote:
> >To all,
> >
> >I have received several replies wanting to know about this mod.
> >
> >It is fairly simple, I removed the stock internal PS speaker by removing
> >
> >the face of the PS and lay the front of PS face down on towel. Remove
> >internal speaker assembly. Now the MFJ Cleartone speaker enclosure is
> >not quite so easy to deal with. I called MFJ to see if they sold the
> >mylar speaker by itself, No. So proceeded to separate the enclosure from
> >
> >the speaker. The speaker is cemented into the enclosure, no screws. Be
> >very careful not to damage the mylar, use an X-acto knife to get it out
> >with minimal effort. My speaker assembly as I called it is a plate that
> >is bolted down to the front panel of the PS. It has a hole large enough
> >to hold the 3X5 inch stock speaker. It will hold the 3" round mylar
> >cleartone speaker but the speaker will need to be off center when
> >mounting the front panel of the PS. I suggest getting new grill felt and
> >
> >padding, if you are as picky about your gear as me. :-) Reassemble the
> >unit and plug in the speaker cable you probably never used up till now.
> >WOW is the best way to describe it! The room come alive with the sound
> >of CW, in my case maybe phone in yours. The audio is very crisp and
> >treble definitely there.
> >
> >By the way the cleartone is a 8ohm speaker also it is rated for 5watts
> >with max of 8watts, so no worries there.
> >
> >Good luck and any questions let me know.
> >
> >--
> >73 dit dit,
> >
> >David E. Shelton, RN
> >KU4IT Amateur Op
> >ku4it@bellsouth.net
> >KU4IT@WD9AGK.SIN.IN.USA.NA
> >http://personal.sdf.bellsouth.net/sdf/k/u/ku4it/pers1.html
> >
> >Amateur Radio Transmitting Society
> > of Louisville, KY
> >
> >
> >
> >--
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> >
>
> --
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> Submissions: tentec@contesting.com
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--
73 dit dit,
David E. Shelton, RN
KU4IT Amateur Op
ku4it@bellsouth.net
KU4IT@WD9AGK.SIN.IN.USA.NA
http://personal.sdf.bellsouth.net/sdf/k/u/ku4it/pers1.html
Amateur Radio Transmitting Society
of Louisville, KY
--
FAQ on WWW: http://www.contesting.com/tentecfaq.htm
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
Search: http://www.contesting.com/km9p/search.htm