DIY Active Home Theater Subwoofer - GRS 12SW-4 and Bash 300S Plate Amplifier
159,759
Published 2021-10-12
A customer sent me the two main components. Tested the plate amplifier and seems only to output about 210w RMS, expecting to have a 300w RMS as it was advertised. But not bad. Since the GRS replacement subwoofer is only rated to accept about a 150w RMS musical power. Also extracted the T/S parameters of the GRS 12SW-4 12" subwoofer. Data is now archived and let me know if you need them.
And as usual if you need the enclosure dimension, just click this link - www.tinkercad.com/things/afPRlwCNZGJ You need to create an account and login to TinkerCad before you can copy, edit and see the dimensions of the 3D schematic.
I flush mounted the subwoofer and installed rubber footing at the bottom of the box. Plate amplifier also seats on a routed MDF flush mount at the back as well for a cleaner and more professional look and feel.
If you are fond watching previous videos about me using T-nuts and machine head bolts, this time I used drywall screws to attach the woofer and Allen head wood screws on the plate amplifier. That is because my time is so limited as well as the customer's budget.
I used a roundover router bit to give the box edges a smooth finish. And pre-painted the enclosure a generous amount of lacquer sanding sealer to seal the MDF pores in order for a very smooth paint job later.
Wanting to achieve a piano-smooth wet sanded finish so I tried to bring the box to a nearby automotive body and paint shop to do the task. I don't know what you think how the project turn out so please let me know what you think by commenting down in the comment section.
Also, please consider subscribing to my channel if you want to see and hear the bass test video next week. I'll be testing the active subwoofer with bass-heavy movie trailers and music. So see you all in the next video!
All Comments (21)
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Ang ganda talaga ng mga gawa mo boss. Ang sarap talaga pag skilled ka... ang hirap ng walang talent.
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Wow that's a huge subwoofer, I can't wait to hear the sound!
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Magnífico trabajo mi querido amigo, como siempre nos deleita con una obra de arte.....También me he alegrado mucho de poder ver a sus hermosas mascotas y su familia....Gracias de corazón por su gran labor divulgativa y sus estupendas aportaciones a la comunidad y al canal.....Un gran abrazo fraternal y muchas bendiciones desde Las Islas Canarias (España)............................................
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Love the prep and paint part. Just a bunch of bros hanging out helping their m8 get some bass.
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Master of all DIY work in Philippines 💯💯💯💯👌👌👌👌 Hai from Qatar
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I have Kenwood sw501 from 90s looks same as this. Very good sub. Banging the whole house
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THE BEST ka talaga IDOL Gumawa Sobrang linis🤗🤗
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Very nice job I bet it sounds excellent! I'm struggling to learn box design right now. I never realized how critical box design is to get good sound and output from a subwoofer until recently.
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Awesome build. Proper!
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Приятно смотреть на работу профи! Всё делается с расчётами и по канонам жанра! Слава богу, нет аудиофильских соплей и нытья про серебро в проводах 🤟👍
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As always, a very nice build.
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“Again Great Video” 👍🏻 Bro
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Great job👍
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Already liking this one👌🏿
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Ang ganda ng pagkakagawa pulidong pulido
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thank you for sharing sir. time to change the enclosure of my box
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Nice👍the paint job looks great😎
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Quality talaga, parang factory made like clipch and other US made sub box.
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Quality talaga sir mga gawa mo. yung 10'' dual ported na ginawa ko na design mo ganda parin, daming nagagandahan sa bass ang linis ng buga kahit direct source lang 😃
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this is incredible good job bruh
