# Building an appropriate speaker amp

**URL:** https://lookmumnocomputer.discourse.group/t/building-an-appropriate-speaker-amp/1560
**Category:** DIY STUFF
**Created:** [August 6, 2020, 4:31am UTC](https://lookmumnocomputer.discourse.group/t/building-an-appropriate-speaker-amp/1560 "2020-08-06T04:31:44Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![binarymob](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/binarymob/32/5062_2.png) [@binarymob](https://lookmumnocomputer.discourse.group/u/binarymob)
#### Post date: [August 6, 2020, 4:31am UTC](https://lookmumnocomputer.discourse.group/t/building-an-appropriate-speaker-amp/1560/1 "2020-08-06T04:31:45Z")

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Or inappropriate - I’m flexible.

So I picked up [this thing](https://www.atlasied.com/fa62t-8mb) - [more angles](https://www.ebay.com/p/1100270654) - at the university surplus shop for 5 bucks. In my haste to get crackin with making sounds I threw it into a very shoddily constructed “Speakerboxxx” and called it a day, then I realized it wasn’t super loud so I need to back up a step and figure out amplification.

 ![20200805_233243](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/8/874ceb3d05f51f45ccccd3486e56f358e7d4e89c.jpeg) ![20200805_233146](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/c6899bef3ea31d1c05638895e150a5464a94258a.jpeg) ![20200805_233346](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/e/ed0a3522c1b454d5d30e40c7f29fb01548426521.jpeg)

I’m guessing I don’t really need that transformer or that rotary switch [which I thought was volume…] Would something like [this](https://www.circuitbasics.com/wp-content/uploads/2015/04/Build-a-Great-Sounding-Audio-Amplifier-with-Bass-Boost-from-the-LM386-Minimal-Amplifier-Schematic.png) do the trick?

That yellow cylinder and the green pill are resistor and caps right? Maybe I can repurpose those somehow - once I figure out the values?

Anything else to consider?

Thanks Kosmo-friends

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### Author: ![twinturbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@twinturbo](https://lookmumnocomputer.discourse.group/u/twinturbo)
#### Post date: [August 6, 2020, 6:05am UTC](https://lookmumnocomputer.discourse.group/t/building-an-appropriate-speaker-amp/1560/2 "2020-08-06T06:05:57Z")

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The Cap/Resistor are the crossover filter… My filter building knowledge is none existant but judging by the size of the speaker I would say it’s a Mid. You can probably just junk them as I guess your not aiming for “Hi-Fi” and you would not have the matching Bass and Trebble anyway.

You can pick up a simple amp on ebay for £2

> **[TDA2030A Amplifier Power Amplifier Board AMP 6～12V BEST X1V1 L0Z0 | eBay](https://www.ebay.co.uk/itm/TDA2030A-Amplifier-Power-Amplifier-Board-AMP-6-12V-BEST-X1V1-L0Z0/313167283768?hash=item48ea398638:g:iqMAAOSw6WJd1DgP)**
>
> And has an internal protection circuit. onboard TDA2030A audio power amplifier chip. 1 X TDA2030A Module. mono 18W amplifier circuit design. Onboard power indicator.

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### Author: ![binarymob](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/binarymob/32/5062_2.png) [@binarymob](https://lookmumnocomputer.discourse.group/u/binarymob)
#### Post date: [August 6, 2020, 8:52pm UTC](https://lookmumnocomputer.discourse.group/t/building-an-appropriate-speaker-amp/1560/3 "2020-08-06T20:52:24Z")

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Excellent thanks for the info. I’ve got a couple LM386s that need a home so I’ll build something simple. I need the practice translating schematics to stripboard.