Was chatting with a few folks about the set up
on my bike...
I have been using a radar detector, with Bluetooth
audio communication to my helmet, for a few years
It has worked really well, providing no issue audio
alerts to my helmet - but there were a few things
I was not that happy with:
- the bluetooth dongle had only one 3.5 mm audio
jack, and that was used for the input from the detector
OLD BT Transmitter AGPTek Bluetooth Audio Dongle
- it was not possible to have my I-phone, or GPS
also communicate through that dongle
- the blue tooth dongles output needed to be
routed through a small amp (about 5 x 6 x 9 cm),
so I could have decent volume
- each night I had to charge both my helmet head
phones (Sena SMH10), and the blue tooth dongle
- during long days the blue tooth dongle would
start to run out of power
- after a couple of years the bluetooth dongle was
lasting for less and less time, and ended up dying
on several longer rides
- the wiring was pretty cramped on my sport bike
So - an upgrade this year...
Picked up the new Sena SM10 Dual Stream Bluetooth
Stereo Transmitter - which I bough in the US, as they
had them in stock before anyone in Canuckistan did (does?)
NEW BT Transmitter Sena SM 10 Dual Stream Bluetooth Stereo Transmitter
Quite a bit larger than the old one, but with three
ports (Micro USB, AUX, and Main)
Now I have the SM10 hardwired into the bike,
for power through its micro USB port, the detector
hard wired into the "AUX" port, and the main port
will be for my GPS (or perhaps some tunes).
The audio cables that come with the SM10 have
raised rings to help seal where they connect to
the main body - and they look reasonably water proof
My GPS (Zumo 660) will also allow blueooth com
with a phone, so that can be worked in through
the SM10 (I believe - yet to test that).
The SMH10 headset can be pre-set to drop the
main audio down to a level you can select when
there is a signal on the AUX input
The only other bit required was a 3.5 mm male
mono to 3.5 mm female stereo adapter (see
below). I found those in stock at The Source,
though I could not find the link on their website.
This takes the mono signal from the detector and
splits it to both headphones (not true stereo, but
into both ears none the less).
NOTE: the mono male has one black ring near the
end of the jack, the stereo males have 2 rings.
This solved all the issues I had with the previous system.
- the bluetooth transmitter is powered anytime the key
- the SMH10 headset lasts all day (easily) and re-charges
in about 2-3 hours
- I was able to remove the amp from the system, making
it simpler and smaller - and quite a bit less wiring
The SM10 pumps out enough power that with the detector
on highest volume, and the SMH10 headset also on loudest
I can hear the alerts easily at high speed with a good set of
earplugs in, and the bike reving
SM10 comes with a plastic tab that has a slide in mount,
so if you want to take it off, it does so in 2 seconds - I
riveted that to the fairing stay
The SM10 also comes with a handle bar mount version if
that works for your bike. Package includes 2 stereo audio
cables (3.5 mm jacks) for connecting devices.
Once on the bike, the units fits up under the fairing,
and the side mounted on/off switch is easily operated
with gloves on.
The only other item of note is that the new SMH10 headsets
come with a micro USB port that the boom mic plugs into
making it much easier to connect the unit in/on a helmet
(I had to cut all the wires, run them through the helmet,
then re-solder - only because I do not like the side-mount
of the SMH10 - mine is on the rear of the helmet)