Bry, looks like a nice setup. Up to what speed are you able to hear the speakers?

 

It's a chore to understand at highway speeds I ain't gonna lie! At those speeds I'm just looking for the "sound" of the GPS, which alerts me to pay attention as my turn/exit is coming up. At that point I can just see the screen indicators of street name, distance to turn/exit and make it from there.

At speeds in town (45mph and under), which is when I'm really paying attention because the turns come much faster and there's more of them, I can hear it just fine.

I have no doubt if I were to spend more money on a better MP3 player I could hear much better at higher speeds. A better MP3 player with a more in-depth equalizer (and louder output) would be perfect. Not something I'll ever do though. The way it works now is just fine.

The FM transmitter options isn't a must have for a bike GPS but it's awesome in the cage -- it interrupts your song on the radio and chimes in loud and clear. Most GPS systems have that indicator that shows you how many miles until the next turn/exit and mostly that's what I glance down at from time to time on the highway when on the bike.

This GPS is an MP3 player as well -- have a 16gig media card in it with a **** load of songs but the damn thing sounds like **** when I plug it in to my amp. There are NO EQ functions so I can't adjust base/treble/mids..... just crap. Works killer in the cage cuz I can use my cage EQ but I was disappointed with that. I need an in-line EQ to make it work as it stands now.

 

You can get a ram mount that will fit your eTrex. I was using one before I got the Nuvi. I used Energizer rechargeable batteries in it and found it would run for over 8 hours on the bike. 8 hours was the longest I had it on so don't know exactly how long it would go.

 

I use my Garmin Oregon, which is intended for hiking but fits real nice between the risers of my Bob, using a bicycle mount.
Runs on 2 rechargable AA batteries for more than 8 hrs. Have a set of spare batteries in my pocket but never needed them.

 

This is where a blue tooth equipped GPS along with blue tooth helmet headset/speakers come in handy. Most cell phones are blue tooth equipped, so you could see who's calling and stop to take the call if you want... listen to your MP3s, be interrupted by directions and/or call if you choose.

If you ride without a helmet, well never mind.

 

Even in my truck I keep the volume down so it's all visual
for me. I was wondering if the vibration of the handle bars
makes the image blurry.

 

Didn't bother my eTrex and doesn't bother my Nuvi.....