I haz passive radiators.

[Bettr n' Revrse 5,000+ posts]

Hmmmm Id like to try them but Id need to do more reading to figure out how they work...

 

[murph 10+ year member]

Hmmmm Id like to try them but Id need to do more reading to figure out how they work...

You add weight to them hence raising or lowering the tuning. Depending on how much power you are running and the size of the woofer(s) tells you the size and how many you will need. Typically you go up one size of the size of the sub you are using a pr with.

 

[Bettr n' Revrse 5,000+ posts]

You add weight to them hence raising or lowering the tuning. Depending on how much power you are running and the size of the woofer(s) tells you the size and how many you will need. Typically you go up one size of the size of the sub you are using a pr with.

Easy enough... Im not sure what Ill be running though at the moment..

 

[rebelfromva 10+ year member]

this is very interesting... would like to see a video

 

[murph 10+ year member]

Near the end he shows it in action.

 

[rebelfromva 10+ year member]

Near the end he shows it in action.

this would be good for my trunk as it being small already but the need to keep some space too. Where would one find a pr?

 

[murph 10+ year member]

this would be good for my trunk as it being small already but the need to keep some space too. Where would one find a pr?

Here Passive Radiators Allow You to Easily Tune Your Subwoofer Enclosure When a Port Tube Won't Work. Variable Mass Passive Radiators from TC Sounds and Dayton Audio! or PSI also sells them.

 

[quackhead 10+ year member]

Exodus Audio PR-21, 21" Passive Subwoofer Radiator for TC sounds, Dayton Audio | eBay

 

[The_Grimy_One 10+ year member]

I wanna run passives and save some space! If I am running a single 15, I would need to do an 18 passive?

 

[gckless 5,000+ posts]

I have been thinkin about a PR design for a little while, but they are definitely not as popular as either sealed or ported. There's not too many PR's out there. The VMP's look nice, but expensive! And I haven't seen any others with any kind of decent specs as those.

Anyway, how did you figure out box dimensions? What kind oof internal space did you use, as compared to what was suggested or required for those 8's in a ported box? From what I have seen, a PR box would be almost the exact same internal volume, and it's only smaller because you don't need to add the dimensions of the port, correct?

But your box looks awesome! Kudos on that.