Tapered Wave Tube with Damp Duct(TWTD) for Alpair10.3, MAOP10, CHR-90

[nandappe]

I have made 5" version of TWTD.

---- Alpair10.3 + TWTD at YouTube ----

Tapered Wave Tube with Damp Duct(TWTD) + Alpair10.3 - YouTube

 

[planet10]

Alpair10.3, MAOP10, CHR-90

Those are all 5” drivers…

dave

 

[nandappe]

Dear,planet10.

Yes, those are all 5" driver.
I designed for 5" driver.

Next challange,I well use chr-90.
CHR-90 is also good sounds.

---- CHR-90 + TWTD at YouTube ----
Tapered Wave Tube with Damp-Duct (TWTD) + MarkAudio CHR-90 - YouTube

 

[cogitech]

Excellent!

 

[nandappe]

Dear,cogitech.

Thanks your comment.
CHR-90 and Alpair10.3 are nice driver.

 

[DMK007]

Good day Nandappe. Any chance that you might have asuitable TWTD design for the Alpair 11MS?

 

[nandappe]

Dear DMK007,

TWTD box for Alpair11MS, Pluvia11, MAOP11

 

[DMK007]

Thank you very much. I will give feedback when I'm done.

 

[DMK007]

Will it make a huge difference if I use 16mm plywood?

 

[Andrewbee]

Hello Nandappe,

I think you have designed something special. Thank you for sharing.

Can you give me a approximate amount of stuffing used below the speaker in grams?

Thanks

 

[nandappe]

There is no problem with 16mm plywood.

Please adjust the absorbing material to your liking.

 

[Andrewbee]

Thank you Nandappe.

 

[DMK007]

Thank you - very excited!

 

[sridip]

Thank you Nandappe.

There is no problem with 16mm plywood.

Please adjust the absorbing material to your liking.

Hello Nandappe ,

Can you please elaborate of the TQWT or the TWTD design provides a better bass response for the same driver...
Regards

 

[nandappe]

Can you please elaborate of the TQWT or the TWTD design provides a better bass response for the same driver...
Regards

DDVP (TQWT) and TWTD have similar low-frequency extension and volume.
DDVP has a large duct area and is attached to the front, making it more dynamic.
TWTD has a smaller duct area and is offset to the rear, resulting in fewer peaks and dips.

 

[sridip]

Brother just one clarification
the original Sibelius speaker has a narrow duct while your design has a much wider duct ... any difference in the design...

 

[Cindra]

Sibelius is different speaker with different driver, similar in design with DDVP but that's it

 

[sridip]

So basically for a MOAP 11 , the DDVP 15 would be an appropriate choice.
Regards,

 

[planet10]

has a narrow duct

Officially called a "restricted terminus”. It provides mass-loading which adds another low pass filter in the design, allowing for less damping and more fundemental to reinforce the bottom.

dave

 

[Andrewbee]

So basically for a MOAP 11 , the DDVP 15 would be an appropriate choice.

https://sites.google.com/view/low-end-diy-loudspeaker/diy-tqwtml-voigt-pipe-with-damp-duct

Yes.