simple volume reduction in a headphone line

Archived from groups: rec.audio.tech (More info?)

Put a series resistor in series with the output to the earphone. Since you
are dealing with very low power, a standard 1/2 to 1 Watt pot would work. I
would use a 1 k pot with a standard earbud type earphone. These are usually
about 40 ohms or so.

Go to any electronics parts supplier for a 1 k pot. It is not critical for
you about the type of taper that it is.

--

Jerry G.
=====


"NWRain" <iamjimbo@hotmail.com> wrote in message
news:10deeb4ojn1snd9@corp.supernews.com...
I am working on running my radar detector audio through a pair of
headphones, but am having a volume problem. From reading another archived
post on this list about volume control, I have a feeling someone here may
have a quick easy answer for me, but I couldn't get it out of that post.

My radar detector (Beltronics 985) has only an internal speaker, no output
jack. I soldered a 1/8" jack to the leads on the speaker. I can now plug
in a pair of earbud headhones and get the audio through, but the level is
deafening, even on the detectors lowest volume setting. How can I lower it?
My thought is that perhaps a simple resistor wired into the jack could
handle it, but even if that is the proper answer, what value resistor (even
general ballpark)? Sound quality is not an issue, I just need to hear
something. Exact volume or adjustability is not an issue. Just a general
reduction of volume by maybe half.

Any help?

Jim

Archived from groups: rec.audio.tech (More info?)

Perfect...

sometimes I'm trying too hard to figure out something to see the simple
answer right in front of me. Of course.

thanx...

Jim


"Mark Hansen" <meh@NOSPAMunify.com> wrote in message
news:10degcpl2hs6514@corp.supernews.com...
> On 6/21/2004 12:38, NWRain wrote:
>
> > I am working on running my radar detector audio through a pair of
> > headphones, but am having a volume problem. From reading another
archived
> > post on this list about volume control, I have a feeling someone here
may
> > have a quick easy answer for me, but I couldn't get it out of that post.
> >
> > My radar detector (Beltronics 985) has only an internal speaker, no
output
> > jack. I soldered a 1/8" jack to the leads on the speaker. I can now
plug
> > in a pair of earbud headhones and get the audio through, but the level
is
> > deafening, even on the detectors lowest volume setting. How can I lower
it?
> > My thought is that perhaps a simple resistor wired into the jack could
> > handle it, but even if that is the proper answer, what value resistor
(even
> > general ballpark)? Sound quality is not an issue, I just need to hear
> > something. Exact volume or adjustability is not an issue. Just a
general
> > reduction of volume by maybe half.
>
> I had the exact same issue when running the radar detector audio through
> my motorcycle intercom system.
>
> What I did was go to Radio Shack and buy an in-line volume control,
> like this one:
>
>
<http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=42-2
559>
>
> I just connected this in and adjusted the volume to where it was
comfortable,
> and sealed the whole unit up with the rest of the wiring. Worked great.
>