Service life

All about the service life, what's new, future development



Frequently asked questions



For questions with support, bug fixing


Speaker choice

For questions with speaker choice by quality, conditions


Box choice

For questions with box parameters choice(type, volume, tuning)


Parameters find

For speaker Thiele-Small parameters finding. However if you have old speaker may be better measure them


Amplifier choice

Questions related to amplifier choice by quality, conditions


Material choicce

For all questions related to material choice for box building, sound dampening, assembling different constructions and other


Car specific

For all car specific questions related to installation, speaker choose for standard mounting holes, box tuning for maximum output and other


15 Feb, 11:36

Attention!!! The future of the service

Some musing about the future of the service(Too much text but should read if you like the service): I've been developing the service for about 3 years, I've done many features: we have 3 clients(iOS, Android, WEB) and backend to connect it all. The project


Yesterday, 08:38

help with speaker database

Alex,  I am a retired audio engineer and was wondering if you need any help with speaker database, I have noticed errors in speaker data that simply cannot be true...  I am offering you a hand in verification and if need to be testing in the future to vali


Yesterday, 07:54

subwoofer enclosure

hi, i am planning to build a new subwoofer for about 500 rms, can onyone design me a subwoofer enclosure?


7 Mar, 12:33


The app adjust the box for peak power?? Down in ts parameters is the PE, i left everything stock and i think i build my box for 2000w


1 Feb, 17:02


What box to chose for Rockford t212d2, net volume without driver displacement and frequency tuning, i don't know what to chose, i was thinking 2.3 cuft at 31hz


29 Jan, 19:56


Max spl and spl shows the same parameters 112 db why? And 3d box is not working. Thanks 


29 Jan, 19:22

Why don't my speakers ever get added

What's the point in having the add speaker button when people spend there time finding ts parameters and all the stuff about a sub or speaker then upload it and wait weeks and it never even gets added.. 


26 Jan, 03:33

Does anyone know how port placement effects the frequency responce of the subwoofer?

I was planing on building a new box for my 2 Kaption audio SRX 12s. The box is around 4.5 cubic feet and the area is around 72, the length is around 30 inches. For now the plan is to have the subs and port on the same side with the port being L shape


13 Jan, 11:00

ts parameters

Anyone know the TS parameters of this Jvc cs-LD3250 10" strobo sub?


13 Jan, 10:57

What does useful volume mean

so i want to build a speaker box for 2 alpine s-w10d2's but the only problem i have is where it gives total volume and useful volume is the useful volume the net volume or what?


8 Jan, 08:41

Best box design

What is the best box design for selenium 18ws 600?


19 Dec 2022, 04:55

Box design

HI have tried to design a ported box for 4- 12's. There a 1250 watt RMS speaker. I have built 2 boxes that are garbage. I'm tired of burning them for firewood. Birch is expensive! Is there anyone out here that would help? I would surely appreciate it. (cra