The Chainlink


Bike Sound

Dingy bells, squealing brakes, air hissing out of tires . . . no wait, this group is about mobile sound systems.

Members: 44
Latest Activity: Jul 31, 2014

Discussion Forum

Boom Bike 4.0 Shopping List 31 Replies

Started by Spencer "Thunderball" Thayer!. Last reply by Jimmy Miller Oct 16, 2013.

Shorai Batteries 1 Reply

Started by Matt. Last reply by h' 1.0 Jul 5, 2013.

Boom Cases 4 Replies

Started by Matt. Last reply by Peenworm "8 mile" Grubologist May 18, 2012.

Syncing mobile sound systems-- best solution yet 17 Replies

Started by h' 1.0. Last reply by h' 1.0 Jun 28, 2011.

Bike sound component givaway

Started by Brendan May 30, 2011.

Power Is Out? 11 Replies

Started by Matt. Last reply by Matt May 23, 2011.

Speakers? 12 Replies

Started by Matt. Last reply by Matt May 10, 2011.

Any reasonably affordable way to get into lithium batteries? 7 Replies

Started by h' 1.0. Last reply by Spencer "Thunderball" Thayer! May 5, 2011.

building a bike sound system.... 4 Replies

Started by Josh. Last reply by Fat Tire Frank Apr 7, 2011.

Source 6 Replies

Started by Brendan. Last reply by Matt Mar 27, 2011.

Comment Wall


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Comment by Andronymous on July 31, 2014 at 11:04am

I'm happy enough with the current incarnation of my long history of personal / small group sound systems on bike, to share.

Pros: Small, loud, rechargeable, bluetooth, FM, <$40.  Cons: FF/RW don't work. Stock battery only 800ma.
Goes way louder than an individual rider needs and has space for spare power and shades etc. This and some good playlists has radically improved my bikemute.

Comment by rik on July 7, 2014 at 11:09am
I can do it.
my rig loud
I am going to: Tour De Fat anyway
Comment by Sarah D. on July 6, 2014 at 8:35pm

HEY Mobile Sound system peeps! I am looking for one of you to power amplify three vocalists really loudly in a samba parade next Saturday July 12 from 6-7:30pm (after Tour De Fat!). There is money, a shirt, and possibly beer involved. It's in Chicago. Please friend/message me for details. Thanks!

Comment by rik on August 9, 2013 at 12:01am

at 6.8 ampH it would be just ok for mobile sound; but not for anything loud.

My experience  with car amplifiers  (240 watts) is that you need over 20 ampH to get any good volume.

Comment by h' 1.0 on July 5, 2013 at 12:09am

Would this be a good battery for mobile sound?

Comment by Self-sealing Stembolt on May 26, 2012 at 8:35am

Some really great systems out there last night.  

The mass was very well run (up until the end) and those running the sound-systems did a very good job of being polite and I even saw one spot where two guys came into sound conflict at a mass-up and one guy turned his off until the mass started moving again.


The only negative thing I saw is the dude with the black sound backpack was being a huge douchenozzle when he threw his empty beer can into the median on Ashland.  Dude, that's not a perennial flower bulb, it doesn't belong in the planters!  Litter bugs STAY HOME!  

Pack your shit out, don't be a douche.   A bunch of guys riding around me made a huge boo when they saw that crappy action just in front of us.  Some started saying rude things about the "music dudes" being jerks.   So yes, you are hurting everyone with a sound system when you act like a nozzle like that. 

Comment by Todd Allen on May 26, 2012 at 7:00am

Load testing will help with batteries that show good voltage without a load but can't hold their voltage with one.   You can use your sound system as the load.  If you want to save your ears or your neighbors ears a car headlight ought to suffice.

If your charger and meter work ok with another battery, then your 4.9 volt battery is toast.  At least if it is supposed to be a 12 volt.  If it's a 6 there's a chance for recovery by zapping it alternately with very high charging and load current pulses which can break up sulfation crystals if they have not grown large enough to physically damage the plates.

Sulfation occurs much more rapidly when a battery is discharged, immediate recharging after use, limiting discharge down to 11 volts for standard batteries and 10.5 volts for deep discharge and topping up charges every 2 or 3 months while in storage will extend battery life.

Comment by h' 1.0 on May 26, 2012 at 5:07am

Thanks-- no load tester. Charger still works normally with other batteries.

Some decent sounding systems on the mass tonight.

Comment by Self-sealing Stembolt on May 25, 2012 at 7:50am

It sounds like there is a problem Howard -either with the charger or the battery itself.  Do you have access to a battery load-tester?  Really, the only way to tell if a battery is good or not is under load.  I've got one of those cheap 100A harbor-freight carbon-pile load testers and it does a pretty good job on both 12v and 6v nominal batteries.  

I got mine on sale for $9.99 as HF is crazy with the sales sometimes but at $25 right now it is a handy thing to have around the shop if you ever work on batteries or equipment like this that has batteries.  

Comment by h' 1.0 on May 25, 2012 at 12:07am

My 38 aH SLA is showing "full" with 4.9 volts per my "smart charger."

Is it toast?


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