PVC pipe speakers

[nicoch58]

pvc is toxic

 

[Brisso57]

pvc is toxic

So are the tinfoil hat brigade.

 

[nicoch58]

cancer for free...
Protect Your Kids from Toxic PVC in Plastics | Healthy Child Healthy World

 

[DrBoar]

An option is to make a tricolumn Voigt pipe!
Sounds good and are really easy to build.

PVC is not toxic (the polymer) the main problem is all that other stuff added to the formulation, flame retardants dyes, fillers and what have you. These other compunds may or may not be "toxic".

 

[vincentbingkau]

This is my 2" PVC quarter wave TLs project. The sound is amazing and bass is comparable to my Floor-stand speaker!

The most tricky point in this project is to determine the driver offset. I tried various offset ratio and found that between 1/5 to 1/3 (may be @ 1/4) are most optimum in sound.

However, until now there are no clear direction on determine the optimum offset ratio and I still need further studies

 

[picowallspeaker]

Some day I'll show you mine - big tubes and 6" woofer
Though the woofer is placed at the end and it shows all the anomalies that Greg B exposed- the terminus(-es) are very near the woofer...
but all the house rattles

 

[nicoch58]

PVC is not toxic (the polymer) the main problem is all that other stuff added to the formulation, flame retardants dyes, fillers and what have you. These other compunds may or may not be "toxic".

No way sorry Vinyl chloride | Technology Transfer Network Air Toxics Web site | US EPA

 

[Greg B]

There is always paper tubes. Shipping tubes, cement form tubes (sonotubes) et c.

 

[Bob Brines]

No way sorry Vinyl chloride | Technology Transfer Network Air Toxics Web site | US EPA

OK, then use MDF and Gorilla glue. It all depends on where you live. Everything is known to cause cancer in California.

Bob

 

[gil vidrio]

materials

My woofer pipes are huge at 76" tall! I stuffed each one with a Dayton Audio RS225-8 8" Woofer.

can you tell the materials you used for this proyect? is a 8 inch pipe?