You forgot to post the images.
You said you are buying from a "seller" so I guess you are buying cheeep ebay junk. Most of their speakers have no audio spec's.
A 70mm speaker is like the little one in a cheap clock radio. It needs an enclosure of at least 1 liter.

Here is a fairly high quality 76mm speaker from USA. Its small size produces no low frequencies and its high frequencies change with the angle it is pointing.

An audio amplifier has at least 3 transistors. Stereo has two amplifiers. Many amplifiers are inside one integrated circuit and amplifier modules are already assembled and sold at low costs.

 

Hah, as if I forgot the images, thanks for the above info by the way that's very helpful. I have a Bluetooth speaker that's about the right size and isn't bad quality for what it is but didn't want to dismantle it if I can help it.

 

The volume of your enclosure is too small for a speaker. The cone of a speaker goes in and out which compresses and expands the air in the enclosure so the air acts like a spring increasing the lowest frequency it can produce.

I have seen and heard some very expensive small Bluetooth speakers that sound great. Their raw speakers are not available.

 

The volume of your enclosure is too small for a speaker. The cone of a speaker goes in and out which compresses and expands the air in the enclosure so the air acts like a spring increasing the lowest frequency it can produce.

I have seen and heard some very expensive small Bluetooth speakers that sound great. Their raw speakers are not available.

So I would need much more depth for it to be effective essentially? If I bore out some of the back and maybe build a box and box it in may work?

 

The spec's for another 76mm speaker recommends an enclosure size of 2.8 liters which is Way Larger than you want.

 

The spec's for another 76mm speaker recommends an enclosure size of 2.8 liters which is Way Larger than you want.

it is, there must be another way, the most volume I could possibly squeeze out would be around 70mm cubed. Any ideas?

 

I have seen some little speakers in a small 70mm cube and some are in about the size of a Coke can in half. They probably sound awful and produce a fairly low level.

 

Got one similar to this one. Sounds pretty darn good for such a small speaker. It's bluetooth, has a battery and plays pretty nice. I can (haven't yet) get a second one and pair the second to the first for stereo, but the quality of sound out of just the single unit is very impressive. It's roughly the size of a soup can, or half the height of a soda can.

 

Got one similar to this one. Sounds pretty darn good for such a small speaker. It's bluetooth, has a battery and plays pretty nice. I can (haven't yet) get a second one and pair the second to the first for stereo, but the quality of sound out of just the single unit is very impressive. It's roughly the size of a soup can, or half the height of a soda can.

Yea mine is just like that, I'm not even bothered about stereo just want it to be louder than my phone and not terrible quality.

 

Do you play music with your phone or just yap, yap and yap?

 

Got one similar to this one. Sounds pretty darn good for such a small speaker. It's bluetooth, has a battery and plays pretty nice. I can (haven't yet) get a second one and pair the second to the first for stereo, but the quality of sound out of just the single unit is very impressive. It's roughly the size of a soup can, or half the height of a soda can.

Yea mine is just like that, I'm not even bothered about stereo just want it to be louder than my phone and not terrible quality.

Do you play music with your phone or just yap, yap and yap?

Yea just for some background sound while I'm working away on my hobbies really nothing special

 

Yea mine is just like that, I'm not even bothered about stereo just want it to be louder than my phone and not terrible quality.

Yea just for some background sound while I'm working away on my hobbies really nothing special

Do you reckon I could junk one of these and use it's speaker?

https://www.ebay.co.uk/itm/WO-TD-V2...hash=item2cf2ade17b:m:m8MMRLr5vt9uxXInWxtcHHw

 

Yea just for some background sound while I'm working away on my hobbies really nothing special

A good use for a set of repurposed computer sound system speakers... Works very well.

 

Thank you all for your helpful advice, the speaker is now made and just needs aesthetics finishing now. I am actually gobsmacked in the difference in sound quality moving the speaker and electronics from a small round plastic casing to my cube wooden casing it's way better than I could have ever expected.

Ps, please excuse my terrible soldering, it's been a while lol

 

Your little speaker will sound better if the enclosure is completely sealed. Sound from leaks will cancel low frequencies from the front of the speaker.

 

Yep, once it's been matchsticks and sealed will be even better

 

So I've now finished the matchstick process and I'm more than happy with the new improved sound quality I'm getting. Seems to be a lot louder as well

 

Your woodworking skills are excellent. I was wondering how you hid the screws holding the speaker until I saw the hot-melt glue.
Does the tiny (smaller than the little one I showed) produce any bass sounds? What is its part number and where did you get it from (AliExpress or Banggood)?