Hi guys. My best friend from high school (class of 1972) own a piece of land on the Palo Duro Canyon in Texas and this October we are putting up a 20x10 container cabin.
I’m buying this solar panel system just for lights and music.
https://www.harborfreight.com/100-w...uU7x5BwyBtzrPTcUTStYTKfYkVkU4TKYaAtHDEALw_wcB
So what is a good class D amp I can run on these panels??? This is background music with small speakers I built.
https://www.google.com/url?q=https:...YQFnoECA4QAQ&usg=AOvVaw39PNnGFkALBw8OmIPIkmW7
I’m buying this solar panel system just for lights and music.
https://www.harborfreight.com/100-w...uU7x5BwyBtzrPTcUTStYTKfYkVkU4TKYaAtHDEALw_wcB
So what is a good class D amp I can run on these panels??? This is background music with small speakers I built.
https://www.google.com/url?q=https:...YQFnoECA4QAQ&usg=AOvVaw39PNnGFkALBw8OmIPIkmW7
Interesting project. I'd probably choose a Class D amp that can run directly from 12 V. There should be a bunch of automotive chips for that. TI has some pretty good options. TPA3221 maybe?
Tom
Tom
What voltage battery goes with the panel? - you run the equipment off the battery, the panel charges the battery. You can't run msot equipment direct from a panel as its more like a constant current source, not a voltage source.
We will charge a 12 car battery and run the lights and music off that. I remember long ago Parts Express sold a battery powered amp that had a curved top. That’s the one that got me thinking of this.
Looks like it's pretty much the same thing but with some control over the switching frequency: https://en.wikipedia.org/wiki/Class-T_amplifier
Tom
Tom
Do you know the sensitivity of the speakers and what your desired SPL is? This will go along way in determining the required amplifier power. IIRC, class T Amps were a proprietary design based on a specific chip set.
On a 12 volt battery, you can use a buck boost converter.
This will broaden the choice of amps! Because at 12 volts the power will be just limited...
Pushing the sound between friends at the end of the evening... I know that!!!
This will broaden the choice of amps! Because at 12 volts the power will be just limited...
Pushing the sound between friends at the end of the evening... I know that!!!
Cool micro home/cabin. Is there a portable AC somewhere we can't see. Average summer temps are around 94 degrees. But I'm sure you know that. 🙂 I can't imagine how hot that container may become. If you're living off-grid, does that preclude a portable generator? I guess you're not too far from civilization as I see building structures straight ahead, and behind the container. Still cool.
Buy secundhqnd car amp. -Well actually just buy a headunit if it doesnt have to be loud. Class D is not always the most efficient. Build in crossover in amp or headunit can be a huge advantage depending on speakers.
Cheers!
Cheers!
That container is just a picture from the net but is a good indicator of what we are building. From our camp site we can’t see any signs of life. We always go mid October so the heat is not bad. We don’t use a generator. We cook diner over open flame and take coolers to keep stuff cool.
So, I never thought of using a car amp. They do run on 12v so that works. I have a passive preamp with just source selector and volume. I'll use my phone with Qobuz as a source. I see a lot of car amps for sale on CL for cheap. Is there a difference between a car amp for subs only and just full range general amp???
Here is the layout of our build. 20' container with a sliding glass door out to a 20'x20' wood deck. It will have a set of outside stairs and a railing all around the top for star gazing. Outhouse and bring-our-own-water whenever we go out there.
we think it's a good start and we can always add more containers.
Here is the layout of our build. 20' container with a sliding glass door out to a 20'x20' wood deck. It will have a set of outside stairs and a railing all around the top for star gazing. Outhouse and bring-our-own-water whenever we go out there.
we think it's a good start and we can always add more containers.
Ok, I always “assumed” car amps were different, in some unknown way, that home stereo amps. Am I wrong? Do they need a proper preamp with gain?
If not, check my thinking, I would power the amp with the car battery we will have in the cabin and connect my phone to the input of the amp and the speakers to the output and control the volume with my phone?
If not, check my thinking, I would power the amp with the car battery we will have in the cabin and connect my phone to the input of the amp and the speakers to the output and control the volume with my phone?
I would probably look for something like this that wouldn’t put much of a draw on your battery.
https://www.ebay.com/itm/1937369107...0qsEdxC0/7m7u48nhgVxsexRonE9|tkp:BFBMgqXkjMxi
https://www.ebay.com/itm/1937369107...0qsEdxC0/7m7u48nhgVxsexRonE9|tkp:BFBMgqXkjMxi
Car amps are only different in, that they are designed for 4ohm or lower speakers, since 8 Ohms cannot pull much power from 12 volt. Depending on your needs it wont be a problem.
Sub amps may not sound good full range. Sometimes they are mono.
Since you will use your already build Stereo speakers, you can ignore, what I said about crossover.
I doubt you will need a preamp as long as you turn down sound on phone and turn amp of before you connect it.
Cool idea with your ofgrid cabin.
Cheers!
Sub amps may not sound good full range. Sometimes they are mono.
Since you will use your already build Stereo speakers, you can ignore, what I said about crossover.
I doubt you will need a preamp as long as you turn down sound on phone and turn amp of before you connect it.
Cool idea with your ofgrid cabin.
Cheers!
I built Paul Carmody's Isetta https://sites.google.com/site/undefinition/portable-and-tabletop-speakers/isetta
and run it off this-
https://www.amazon.com/dp/B00ME3ZH7...OEV2R1UR&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
It runs for several hours off the 12-volt output of the rechargeable pack. A car battery should run it even longer. I have found most amps have a pretty wide supply voltage requirement.
Here's another I've run off the same power bank- https://www.amazon.com/dp/B08R3Y5WX...UOEV2R1UR&ref_=list_c_wl_lv_ov_lig_dp_it&th=1
and run it off this-
https://www.amazon.com/dp/B00ME3ZH7...OEV2R1UR&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
It runs for several hours off the 12-volt output of the rechargeable pack. A car battery should run it even longer. I have found most amps have a pretty wide supply voltage requirement.
Here's another I've run off the same power bank- https://www.amazon.com/dp/B08R3Y5WX...UOEV2R1UR&ref_=list_c_wl_lv_ov_lig_dp_it&th=1
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