My DIY Speaker - 1

[Kannan]

Also put a warning "Not to be mistaken for a fire hydrant'

 

[saikatbiswas82]

Also put a warning "Not to be mistaken for a fire hydrant'

I have already ordered some vinyl stickers to go with it. Will update as soon as I apply them.

 

[saikatbiswas82]

@saikatbiswas82 does the vertical base section only serve as a stand or is it also hollow and part of the enclosure volume

The vertical section is also hollow. This section is also stuffed with hard foam and recron.

 

[saikatbiswas82]

excellent and indeed very innovative. please post some pics of the journey and some more tracks, whats inside , what drivers and wires used... waiting eagerly for the next project

Thanks a lot.

As requested, here are some more photos of this journey.

My initial thought






Some tools



Paint process













The inside of the PVC pipes are covered with bitumen sheet. I just bought the bitumen sheets from diyaudiocart and had no idea how to apply them. After a quick chat with Bijin, i came to know that these sheets need to be pasted with a little help of heat. Thanks Bijin for guiding me. So I ordered a heat gun and it worked out great.

I have stuffed the enclosure with polyfill 1" sheet (diyaudiocart) and recron (pillow material) - locally procured
Speaker wire - C&E 14 AWG - amazon
Lugs, heat shrink tubes, binding posts, nuts & bolts, paint - locally procured

Tools used -
Orbital sander
Heat gun
Circular saw
Jigsaw
Angle grinder
Drill machine
Router
Spray paint machine
Paint brush
Sandpapers (used till 400 grit)
Soldering iron
Screw drivers
Allen keys
Knife
Scissor

 

[drkrack]

sweet spot to be narrow

Yes it appears so because of the design parameters ; did you do a simulation to arrive at the correct volume?
There are innumerable ways this design can be further optimized depending upon the specific requirements , but the simplistic nature and unique design still makes it a show stopper.

does the vertical base section only serve as a stand or is it also hollow and part of the enclosure volume

Can a TL design be accomplished by using the pipes and polyfill like this?
@Naveenbnc It'll be really interesting to attempt something like that.

 

[saikatbiswas82]

Yes it appears so because of the design parameters ; did you do a simulation to arrive at the correct volume?
There are innumerable ways this design can be further optimized depending upon the specific requirements , but the simplistic nature and unique design still makes it a show stopper.


Can a TL design be accomplished by using the pipes and polyfill like this?
@Naveenbnc It'll be really interesting to attempt something like that.

No I did not go through any simulation.

This is going to be my portable speaker. So kept it as small as I could. TL designs can be accomplished with PVC pipes very easily.

 

[sunilj]

Saikat, a simple 'baffle step' circuit will go a long way in improving the mid-bass. Here's a link to run simulation in case you need to.

Loudspeaker Diffraction Loss and Baffle Step Compensation Circuits

Loudspeaker Diffraction Loss and a Baffle Step Compensation (BSC) Circuit Calculator for Speakers.

diyaudioprojects.com

Assuming the average impedance is ~6ohms and width is 4" here's what you need. Put a 0.8mH inductor and 6R resistor in parallel to the +ve leg of the speaker connector. These values assume a 6dB loss. If thats not sufficient, go overboard and freak out.

 

[Kannan]

Can a TL design be accomplished by using the pipes and polyfill like this?

It is nothing new. Many have done.

https://i.pinimg.com/originals/15/3b/53/153b53bd91e66aecbda3ac7e991d777a.jpg

 

[saikatbiswas82]

Saikat, a simple 'baffle step' circuit will go a long way in improving the mid-bass. Here's a link to run simulation in case you need to.

Loudspeaker Diffraction Loss and Baffle Step Compensation Circuits

Loudspeaker Diffraction Loss and a Baffle Step Compensation (BSC) Circuit Calculator for Speakers.

diyaudioprojects.com

Assuming the average impedance is ~6ohms and width is 4" here's what you need. Put a 0.8mH inductor and 6R resistor in parallel to the +ve leg of the speaker connector. These values assume a 6dB loss. If thats not sufficient, go overboard and freak out.

Thanks. I'll look into this.

 

[saikatbiswas82]

A small update.

 

[saikatbiswas82]

My portable setup is now complete. Feeling awesome

 

[arunkvivek]

My portable setup is now complete. Feeling awesome

View attachment 34121

That's potent ammo!!!

 

[rituj_b]

This is so dope!!

 

[Mayank Shah]

Very unique. Must be sounding good too. Looking forward to your next one.

 

[Prasantam]

Too cool Bro

 

[mibnold]

It looks beautiful and extraordinary too! Good Job!
I hope I'm as resourceful as you are and make new useful things out of unused materials.
Share us more of your new innovations!

 

[Ujjwal03]

Keep up the good work

 

[Analogous]

Looks very nice

 

[Kana711104]

Wow thats awsome , if I could listened. Hope one day will. Fantastik build. Specially round enclosure will give you fantastik high frequency stabilisation.
One suggestion ... if you can use a phase plug. The highs will flow like charm. BTW how is the low frequency response and what is resonant frequency rolling there.

Happy Listening

 

[SwaroopKS]

Wow! awesome build, love the design! cant believe i missed this thread before.