Next rev of the DSP PCB should have the same series caps that all of the other
audio output have!. Sized of course to the impedance, DUH.
Mel, K6KBE
On Sunday, December 22, 2013 11:14 PM, Don Wilhelm w3...@embarqmail.com wrote:
Gary,
It seems that that is one adapter that 'does it
The main board already has capacitors between the audio amplifier and
speaker switching on the KIO3 board. The capacitors - C2 and C3, 470
uF each - don't prevent accidental overload of the audio amplifier if
the output is shorted. With an impedance of less than 0 - j0.5 Ohms
at 1 KHz, they
Enough drama already. For $1.99 I bought the recommended Radio Shack P/N
274-0375 1/8 dual mono jack to 1/8 stereo Y-adapter. Now I can op my
stereo head set and play the current mono speaker w/o smoking the radio. It
does fit the I/O board with everything next to it occupied.
I decided to go
Hi Gary:
On the Radio Shack website, it's now priced at 97 cents and that
means that it's being closed out. So, if someone needs that item, now
is the time to try to get it.
73 de Ray
K2ULR
On Dec 23, 2013, at 10:46 PM, Gary NL7Y wrote:
Enough drama already. For $1.99 I bought the
Another product offering dual 1/8 mono input to single 1/8 stereo out.
Search: Hosa YMM-261 Y adapter
There's got to be others as well.
73, Gary NL7Y
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Sent from the Elecraft
Another mono/stereo speaker comment and question. Fred KE7X covers this topic
well in his reference, as does Elecraft in their Owner's manual...to some
extent.
Above noted earlier I have a Radio Shack P/N 274-0374 1/8 Mono Jack to
1/8 Stereo Plug Adapter stuck in the back of my K3. It feeds the
Gary,
It seems that that is one adapter that 'does it right'. Many do not and
connect the ring of the stereo plug to the sleeve when a mono jack is
inserted, thus grounding the right channel. That is typical of the 1/8
inch to 1/4 inch adapters.
73,
Don W3FPR
On 12/22/2013 10:17 PM, Gary
Hello Marcel,
Have you had a mono plug inserted into the speaker jack?
Even if you are just using one speaker, you -must- use a stereo
plug for the speaker/speakers.
The sleeve of a mono plug will short the audio IC and may
cause it to fail
73!
Ken - K0PP
On Sat, Dec 21, 2013 at 10:36 AM,
I have a Radio Shack P/N 274-0374 1/8 Mono Jack to 1/8 Stereo Plug Adapter
stuck in the back of my K3. It feeds the mono plug to my ICOM SP 20.
No smoke so far, but I've wondered if the mono input side of the adapter
still shorts the stereo output. Suppose I should test it and find out. I
read
Gary,
A stereo to mono adapter will usually not work. If you follow the
diagram for most of those adapters, the result will be the same as using
a mono plug - the ring will still be connected to the sleeve of the mono
plug.
The only real answer is to change the mono plug of your ICOM SP 20
You could use a Y-adaptor, where a stereo plug comes out to two mono jacks for
the separate channels. Then use the right channel for mono out.
wunder
K6WRU
On Dec 21, 2013, at 8:45 PM, Don Wilhelm w3...@embarqmail.com wrote:
Gary,
A stereo to mono adapter will usually not work. If you
Hello Don and thanks for the info…that’s what I expected…a short from ring to
sleeve. I have a 1/8 stereo plug to solder up to the SP 20 tomorrow per your
suggestion. Somewhere I read that Elecraft had installed some bleeder
resistors (or ?) to help delay the inevitable smoke from the audio amp.
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