I just bought one of these from Dollar General for $15. It's not a bad speaker for the price and I saw right away that a simple mod can dramatically improve the bass. The lower speaker in the tower is not really a speaker but a passive radiator. Not only is it not larger than the driven speaker but it is poorly tuned resulting in hollow sounding boomy bass at best. All I did was add a little mass to the passive radiator to lower its resonance and the sound is much better. I glued 1 g of cardboard to the backside but this could be done many ways. I tried up to 3 g of additional mass but 1-2 g seems to work fairly well. I also see that a second speaker could be added or the cabinet could be used for a DIY portable speaker project. I'd be interested to know if anyone else has hacked on one of these.
-
After 15+ years, we've made a big change: Android Forums is now Early Bird Club. Learn more here.
Sylvania SP305(DG), Craig CR4189BT and similar Bluetooth Tower Speaker Mods
- Thread starter chris1379
- Start date
Here are a few pictures. The cardboard disks add up to 1 g. This gives pretty good bass down to about 100Hz, which was barely audible before. 2 g improves the low frequency cuttoff but the resonance isn't as prominent.
If anyone has a suggestion as to a better forum to post this let me know.
If anyone has a suggestion as to a better forum to post this let me know.
Last edited:
I posted this mod to http://www.head-fi.org/t/747360/sylvania-sp305-bluetooth-portable-speaker-mod
Still looking for a confirmation that the Craig is made the same way.
Still looking for a confirmation that the Craig is made the same way.
