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• # My first speaker

Posted by on September 14, 2023 at 9:51 am

A while ago I decided to build my own bluetooth/wifi speakers. Therefore I bought 2 drivers and 2 passive radiators.

* Tang Band (https://loudspeakerdatabase.com/TangBand/W8-2314)

Using 2 Arylic Plate Amp 2.1, I want to build 2 separate wireless speakers. Note that I have done measurements on the two drivers with my DATS v3 (see below). I guess the next step is to build a test box, and I also guess that I should use my measurements to determine the size of the test box, but how would I go about this?

Having read an article on enclosure design (https://audiojudgement.com/passive-radiator-speaker-design/) I’m left confused since some assumptions are made in this article, which might not be true for my project (like beta = alpha, Qts is between 0.2, and 0.35, etc.) As mentioned, I’m not sure if I can make all these assumptions, but the main question would be: how do I make a good test box?

2 Members · 2 Replies
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• ### Spegesilden

Member
September 14, 2023 at 9:52 am

Here are my measurements
Woofer 1:

* Piston Diameter = 180 mm

* f(s)= 44.95 Hz

* R(e)= 3.7 Ohms

* Z(max)= 17.17 Ohms

* Q(ms)= 2.292

* Q(es)= 0.6294

* Q(ts)= 0.4938

* V(as)= 40.36 liters (1.425 cubic feet)

* L(e)= 0.7655 mH

* n(0)= 0.5553 %

* SPL= 89.55 1W/1m

* M(ms)= 28.25 grams

* C(ms)= 0.444 mm/N

* BL= 6.848

* K(r)= 0.2868

* X(r)= 0.3744

* K(i)= 0.07163

* X(i)= 0.4827

Woofer 2:

* Piston Diameter = 180 mm

* f(s)= 50.77 Hz

* R(e)= 3.783 Ohms

* Z(max)= 18.1 Ohms

* Q(ms)= 2.557

* Q(es)= 0.676

* Q(ts)= 0.5347

* V(as)= 33.1 liters (1.169 cubic feet)

* L(e)= 0.7905 mH

* n(0)= 0.6111 %

* SPL= 89.96 1W/1m

* M(ms)= 27 grams

* C(ms)= 0.364 mm/N

* BL= 6.943

* K(r)= 0.2942

* X(r)= 0.3743

* K(i)= 0.05923

* X(i)= 0.5023