I've been using this amp for light duty, mostly to play tunes in the shower, and it works pretty well:
https://www.amazon.com/gp/product/B08H54T98M
As of yet I haven't used it's subwoofer speaker level output.
I found a Klipsch powered subwoofer with a broken amplifier for $20 on Craigslist and am thinking about getting it and converting it to a passive sub powered by this amp.
https://2d73e25b29782b6d6766-9c8af5...sl.cf2.rackcdn.com/RW8_635042119528390000.pdf
What do folks think about powering this sort of small passive subwoofer with this sort of amp? Other than the obvious point about needing a sufficiently beefy power supply to handle it.
https://www.amazon.com/gp/product/B08H54T98M
As of yet I haven't used it's subwoofer speaker level output.
I found a Klipsch powered subwoofer with a broken amplifier for $20 on Craigslist and am thinking about getting it and converting it to a passive sub powered by this amp.
https://2d73e25b29782b6d6766-9c8af5...sl.cf2.rackcdn.com/RW8_635042119528390000.pdf
What do folks think about powering this sort of small passive subwoofer with this sort of amp? Other than the obvious point about needing a sufficiently beefy power supply to handle it.
You may wish to consider not using the amp without a load on the sub output from the amp. Some class D amps can be damaged in this way.
Other than that, it should work OK.
I did something similar with a Tannoy sub, using a twin chip TPA3118 amp powered by a Dewalt 18V 5AH battery. Works very well as a small party outdoor system.
Other than that, it should work OK.
I did something similar with a Tannoy sub, using a twin chip TPA3118 amp powered by a Dewalt 18V 5AH battery. Works very well as a small party outdoor system.
I think there must be some protection since that's how I've been using the amp for ages.
And ha on the drill battery setup! That's how I use one of mine as well, except with a Rigid drill battery. Attaching a few pics. Works beautifully.
Mine gets very beat up since it gets used mostly on my boat, where it gets covered in salt water from time to time. Still a champ after 3 or so years, though it's needed a few rebuilds over the years.
Do you get an occasional click from the battery? Mine sometimes gives a small "pop", I'm guessing something about the BMS on the drill battery. I've been meaning to try other batteries to see if it happens with them too, but ultimately it's no big deal, it's only occasional and pretty quiet.
I just upgraded this from an old Breeze Audio amp. This one sounds so much better, and the built-in bluetooth (as opposed to an external bluetooth receiver) is so much nicer.
Excited to add a part time subwoofer. I'm thinking some sort of plug that I could attach the sub to as needed.
Attachments
Last edited:
Well I got the subwoofer (Klipsch SW-8), $20 with a broken amp. Looking at the amp there were a couple of capacitors that were pretty obviously blown, but these Klipsch amps are so prone to blowing that I didn't want to bother with it.
The conversion was easy, I just opened it up and connected it's old speaker level input jacks directly to the speaker inputs. So it's just a completely passive subwoofer speaker now.
It's a bit too large for my original project (subwoofer for my yard stereo or shower) but sounds good enough that I might use it on my main stereo.
Attached is a pic of the sub with its new Class D amp, which gets a line level signal from the main stereo. I think it's an improvement over the Yamaha subwoofer shown behind it.
Incidentally lots of people use this $225 amp to power these subs when the built-in one dies. I wonder how much better it sounds.
https://www.amazon.com/Bash-300W-Digital-Subwoofer-Amplifier/dp/B000CCS440/
I don't really know how to test the quality of a subwoofer amp other than just the ear test, but this little $32 amp sounds pretty good to me.
The conversion was easy, I just opened it up and connected it's old speaker level input jacks directly to the speaker inputs. So it's just a completely passive subwoofer speaker now.
It's a bit too large for my original project (subwoofer for my yard stereo or shower) but sounds good enough that I might use it on my main stereo.
Attached is a pic of the sub with its new Class D amp, which gets a line level signal from the main stereo. I think it's an improvement over the Yamaha subwoofer shown behind it.
Incidentally lots of people use this $225 amp to power these subs when the built-in one dies. I wonder how much better it sounds.
https://www.amazon.com/Bash-300W-Digital-Subwoofer-Amplifier/dp/B000CCS440/
I don't really know how to test the quality of a subwoofer amp other than just the ear test, but this little $32 amp sounds pretty good to me.
Attachments
Last edited: