Hello all,
I am building my second project. My first one was Speakerdesignworks Aviatrix. This one will be a 2.1 channel portable boombox using the following parts:
It is to be portable, so I want it strong and light. I will use 3/4 multi-ply and want a candy red paint on it with a brown/tan grill cloth. I got my inspiration from the design on parts-express. Just enter the following after the parts-express web URL:
/project-gallery-speaker-project-the-podzuma
It is made to look like an older amp. I didn't include the battery as it would cost too much and make it heavier. The way I'm building it should have good output from 30hz to 20khz.
So far I have the amp, PS, and Sub-woofer. I will get the wood next and start building while I save up for the full-range speakers as they are 85 dollars a piece. The other thing I will do are the mods per FFcossag on youtube to lower noise floor and improve the crossover which is around 60-80hz. The full range can play down to 52hz. Based on his mods, the sub will start to attenuate at50hz with much more between 60-80hz. 80 was -6dB if I recall.
I think I will build the cabinet with a large enough amp/PS chamber so that I can put in batteries down the road if desired.
I should be able to fit two Power-Sonic PS-12120F2 12v 12aH batteries in there, but it would weigh 16 extra pounds. That's a ton more.
I am building my second project. My first one was Speakerdesignworks Aviatrix. This one will be a 2.1 channel portable boombox using the following parts:
- TPA3116 Bluetooth 4.0 Digital Amplifier
- Dayton Audio SD215A-88 8" Sub
- Markaudio Alpair-7 Gold Cone 4" Full Range Driver
- Mean Well MW NES-150-24 24 VDC 6.5A 150W Regulated Switching Power Supply
It is to be portable, so I want it strong and light. I will use 3/4 multi-ply and want a candy red paint on it with a brown/tan grill cloth. I got my inspiration from the design on parts-express. Just enter the following after the parts-express web URL:
/project-gallery-speaker-project-the-podzuma
It is made to look like an older amp. I didn't include the battery as it would cost too much and make it heavier. The way I'm building it should have good output from 30hz to 20khz.
So far I have the amp, PS, and Sub-woofer. I will get the wood next and start building while I save up for the full-range speakers as they are 85 dollars a piece. The other thing I will do are the mods per FFcossag on youtube to lower noise floor and improve the crossover which is around 60-80hz. The full range can play down to 52hz. Based on his mods, the sub will start to attenuate at50hz with much more between 60-80hz. 80 was -6dB if I recall.
I think I will build the cabinet with a large enough amp/PS chamber so that I can put in batteries down the road if desired.
I should be able to fit two Power-Sonic PS-12120F2 12v 12aH batteries in there, but it would weigh 16 extra pounds. That's a ton more.
Attachments
Might consider LiPo batteries and a buck converter. Use the jump start connections of two/three batteries connected in parallel for higher current demand and monitor the input voltage of the converter. SLA batteries can be a headache and difficult to charge properly..
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32000mAh Petrol & Diesel Car Jump Starter Battery Charger 12V Laptop Mobile Phone Power Bank Start Engine Emergency Free Shiping-in Battery Charging Units from Automobiles & Motorcycles on Aliexpress.com | Alibaba Group
200W DC DC Boost Converter 6 35V to 6 55V 10A Step Up Voltage Charger Power with Shell-in Other Electronic Components from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
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those batteries look promising. I am going to build it with just a PSU for now. The compartment is large enough to support batteries in the future. It will be 5" x 10" x 10". My subwoofer and PSU come in today. I will start testing out my amp. It seems to be a different build than the one that FFcossag upgraded on youtube for better sound. Mine is attached here. Has anyone here used this specific version?
Attachments
I tested out the amp and one of the channels has more base than the other. The sub channel's low-pass filter is set too high. I have to learn how to adjust the capacitor values to accommodate as I'd like the low-pass to be around 100hz, or better yet, 80hz. Then the high-pass on the 4" speakers to be around 60hz. I am also getting the wood cut next week. This being portable, I am thinking of 1/2" Birch and doubling up on the front baffle with internal bracing. Do you guys think this is solid enough for my subwoofer, or should I go with 3/4"?
I am still thinking of the batteries OffGridKindaGuy stated. 32mHh does seem like what would easily push my setup for quite a while. I'd need two batteries though. I still don't understand how these batteries can store this much power being so light.
I am still thinking of the batteries OffGridKindaGuy stated. 32mHh does seem like what would easily push my setup for quite a while. I'd need two batteries though. I still don't understand how these batteries can store this much power being so light.
I was looking at that one as well. I am worried about all the mentions of noise.
I am now uncertain about doing the 2.1 design so a more simple 50x50 would do
That's actually genuinely hilarious, in a monty python black knight way. "I can charge your telephone AND jumpstart your Diesel engine". Excellent.
Hello to all,
I am trying to make my fist 2.1 boombox. I would like to be portable and also to use it outdoors. I have choose some parts (please check the links below) but I can not understand if it will be loud enough.
One from the woofers below
Dayton Audio DS135-8 5" Designer Series Woofer Speaker
Dayton Audio DC160-4 6-1/2" Classic Woofer Speaker
one set of full range speakers
Dayton Audio RS75-4 3" Reference Full-Range Driver 4 Ohm
Dayton Audio RS100-4 4" Reference Full-Range Driver 4 Ohm
Fountek FE85 3" Full-Range Speaker Driver
Amplifier
https://www.ebay.com/itm/TPA3116-2-...055929?hash=item420e32dcf9:g:pzkAAOSwZL5d7xS2
I am glad to hear your recommendations and also I would like ask if you are thinking that I have to built a crossover. How I can calculate any crossover?
I am trying to make my fist 2.1 boombox. I would like to be portable and also to use it outdoors. I have choose some parts (please check the links below) but I can not understand if it will be loud enough.
One from the woofers below
Dayton Audio DS135-8 5" Designer Series Woofer Speaker
Dayton Audio DC160-4 6-1/2" Classic Woofer Speaker
one set of full range speakers
Dayton Audio RS75-4 3" Reference Full-Range Driver 4 Ohm
Dayton Audio RS100-4 4" Reference Full-Range Driver 4 Ohm
Fountek FE85 3" Full-Range Speaker Driver
Amplifier
https://www.ebay.com/itm/TPA3116-2-...055929?hash=item420e32dcf9:g:pzkAAOSwZL5d7xS2
I am glad to hear your recommendations and also I would like ask if you are thinking that I have to built a crossover. How I can calculate any crossover?
I'm worried about the MA drivers being used in a mobile setup, where they'll get bumped, hot, humid, cold, etc....
I would have gone with something like a polypropylene cone, more impervious to the environment.
I have made something similar, but since I mostly travel and camp in my van, it was taking too much space.
Now, I'm going to make something looking like a sound bar. I'm going to lose low end for sure, but it will be even more portable, and will be easy to stow away in the van.
I would have gone with something like a polypropylene cone, more impervious to the environment.
I have made something similar, but since I mostly travel and camp in my van, it was taking too much space.
Now, I'm going to make something looking like a sound bar. I'm going to lose low end for sure, but it will be even more portable, and will be easy to stow away in the van.
Hello nionios,
Have a look at tje Isetta design by Paul Carmody :
Isetta - undefinition
It use Fountek FE85 and Tang-Band W5-1138SMF wich produce nice bass 🙂
I've build one few weeks ago :
Isetta BoomBox confinement build
Have a look at tje Isetta design by Paul Carmody :
Isetta - undefinition
It use Fountek FE85 and Tang-Band W5-1138SMF wich produce nice bass 🙂
I've build one few weeks ago :
Isetta BoomBox confinement build