Building a Small Passive Radiator Subwoofer- by SoundBlab

This Subwoofer with Passive Radiators was designed around the Tang Band W6-1139SIF 6.5inch subwoofer driver and Dayton Audio 8inch passive radiators. The goal was to have a small but powerful subwoofer that is ideal to match with a smaller set of stereo speakers for Hi-Fi or near-field studio use.

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[mamansulaeman]

Passive radiator is slightly clearer and punchier, but ported are slightly deeper.
For the bass strength, they are perform about the same

[xanderguldie]

They both sound great. The ported sub is surprisingly punchy. The passive radiator one is a bit clearer but doesn't seem to dig as deep

[JasonsLabVideos]

Those little bookshelf speakers just LOOK AMAZING !! rounded over corners their size !! Love them !

[KingMinhvuong]

Very nice video bro. Love your work. Respect from u.s!

[christopherburbidge]

The whole Concept of using a passive radiator (to me) is Genius! I have noticed that most of the time, Passive Radiators are used in small to very small enclosures. Being able to tune (somewhat) with the weight added or deducted to the Passive Radiator is very cool! I thought up a way to do this with a water bladder years ago but never did it. Life gets busy, so someone play with that and don’t forget me when you get wealthy! 😉

[jbarelds]

Great video! Both should indeed perform about the same, as they're based on the same principle (the helmholz resonator).
In a 2-way, a passive radiator has a big advantage. In such speakers, a bass reflex port will most likely generate significant amounts of port resonance in the passband of the midbass driver. This can be avoided by using a passive radiator.

[adamfrandsen]

To my ears the ported sub sounded far superior. great job!

[prettyhard]

Passive rad got a tighter bass response while the ported has a more boomy sound for me.

[erikkroll]

Nice comparison. The PR sub sounded cleaner and punchier. I use to only have ported subs but the last one I built, I used PRs. Much cleaner sounding. One thing to note is, even though they are the same concept, the PRs usually roll off faster than a ported box.

[Zachary_Ostrander]

The subwoofer is awesome! And your videos are amazing

[ashyouknow]

I have been waiting for this for so long!

[TimpBizkit]

The problem with ports is in small boxes they have to be long and/or skinny to play low because air is so light. If you listened in an Argon atmosphere perhaps you could have sensible port dimensions, but seeing as you want to breathe, passive radiators are good being heavy enough to resonate down low.

[Matrịx.-os]

I think the passive is lower bass and punchier cleaner crisper 🤷‍♀️

[BudgetBassHead]

The purpose of the passive radiator is to save space. However, these enclosures are nearly the same size. In my opinion, not the best way to demonstrate the full potential of radiators, but entertaining and educational nonetheless. Thumbs up.

[Ohgodmail]

The passive radiator model provides significantly more impact and clearer bass notes.

[rickbars]

Which is the software do you use to calculate the radiator, weight and speaker box?

[muhammadali]

Soundlab always makes great, iam your big fan .

[chokechange]

Would be interesting if the passive radiator box was noticeably smaller.

[moisesbeltran]

The PR sub sounds more impactful, but i do like both subs.

[habbahan]

To my ears the passive speaker sub had no sudden resonance peaks and the ported one did howl a bit