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@@fire1200 Sorry, not sure if I understand the question.

That's the bauty of this odd passive radiator. See my other movie with it with less weight and in slow motion. Thanks for the comment.

@@alex.G.R.Z Visually speaking yes. Functional wise it would be interesting to do some measurements to analyse it's behaviour acoustically speaking.

@@kaedeschulz5422 Agree 👍

Thanks! Song: 808 Dreams - Bassotronics

Earthquake said it's absolutely fine to mount it this way.

@@alex.G.R.Z well what you could do to prove it to yourself is this, measure the square inches of the opening to those reflex speakers, the opening part where you connected to the box that is, then measure the amount of square inches on both of the backs of the surfaces of those flex drivers and you will see that those two numbers don't add up the same, there are more square inches of surface on those drivers then there are square inches feeding those drivers, that means those drivers are having priority over the actual controls of the response, I'm sure they tried their best to come up with a product but they did after all have to create a opening that you can match to a box so they had some size restraints.

What if I took this, and put it on the side of a pioneer TS-A3000LB. It's a single down firing 12, in a flat box I can put stuff on top of. This setup would fit perfectly in the side of my trunk, with the pump 12 in the furthest corner. The measurements seem like it would mount perfect.

There is a mdf box under the legos.

@@alex.G.R.Z ah ok that makes more sense lol I don't think it's possible to have a fully Lego box anyways not with that kind of weight

Thanks for the comment. See my other slow-motion movie on this setup with less weight on the radiator and different pusheen 👍

It looks like it has different vibrational modes. I wonder what the phase is like because I'm interested in whether this is expanding the range of amplification by widening the number of tuning frequencies, or is there phase cancellation going on? I can't tell because my subwoofers are limited to about 35 Hz. I must plug in my in ear headphones.

@@TimpBizkit Btw, ony inner was flexing @ 13-15hz.

No, I've build it for someone and haven't tried this option. See my other passive radiator builds. The one with slaps-18 is cool 😎

@@alex.G.R.Z-Yes i have seen many of your videos. The pusheen on your 18" slaps, jumping around.

Can you comment in English?

​@@alex.G.R.Zit looks beautiful, but what is the sound pressure effective box? I can only translate using GPT

@@andreyrudenko3353 Thank you. It did 149db @25hz

@@alex.G.R.Z 👍

Diffrent. Depends on individual taste.

@@bassheadfanatik Passive radiatirs will add efficiency and also lower hz of your box. I'm not mixing batteries so not sure what you're on about.

Yes. Sa15 as well.

Just wanted to do something different.

​@@alex.G.R.Zwell it's definitly that! I love it bro good work

Hard to answer your question. Two 12" passive radiators have been added. Need to read about passive radiators. In general, more bass and deeper bass. Better quality then standard port.

9 months late... but basically, it depends on the passive radiators. They can be tuned, much like a port, by adding or removing mass. They have certain advantages and disadvantages. It all comes down to the combination of active drivers, box volume, passive radiators and their respective mass tuning. They generally offer better extension than ported with equivalent box volume. Group delay at FS can be slightly worse. "Can"- it all depends on the application. They're most often used in small Bluetooth speakers these days. When enclosure size is severely limited, as in a small Bluetooth speaker, they far outperform a traditional ported design (all things equal).

@@alex.G.R.Z -Why is it hard to give your opinion on how this pump-12 sounds/performs, vs without it, or compared to other enclosures you have had, or heard? Not many people care, or believe marketing hype, real world results/testing/listening from an unpaid person means more. All though opinions & preferences vary, its nice to get feed back from someone who owns the product. Does it have more peak, & 20 Hz output vs a regular sealed enclosure, does it still sound tight, & accurate, etc.?

@@evilinside5984 I can confirm that you will get more output by adding the pump, especially at the low end. Also with adding weights you can tune your box very low without adding box space. Hope thos helps. I have one home, I ve added the pump 12 to my single 10" extra long stroke sub and made box slightly bigger and now my sub performs as good 15" or even 18" sub would.

@@alex.G.R.Z - Thank you for your response. This is what i think alot of people want to know. Have you done any testing to see what orientation/configuration has the best results/performance? Like sub back, passive to the side, sub up, passive back, etc.?

It did 149db @ 25hz

@@alex.G.R.Z- Very nice score @ 25Hz! I ❤️ low freq.

Tried both and it works both ways. Only difference is you get more box volume and can see membranes working when installed this way.

yup

Big Krit - Rotation (slowed 13hz)

😅

20hz violation - basstronics 🔊

@@alex.G.R.Z thx

Незнаю, я борш хавал

Thanks, I did the math and yes I have a scale. There are weights added on at the other side of radiator and unicorn is also calculated in. It is turned to 22hz using Earthquake Sound calculator for SLAPS.

@@alex.G.R.Z I had wondered, It is one of the coolest, probably the coolest passive radiator setup Ive ever seen...Good Job! Also the passive radiator, did it come like that with multiple surrounds? Or did you make it? & whats the big surround? 22in?

@@ballistic_mod Thank you, This is a original Earthquake Sound SLAPS-18. It is rare and made to order. See my other movie with it after doing some adjustments 🦄😀

I don't know, them bitches seem to be moving pretty good to me. What would you have chosen?

Sorry, impossible to please everyone.

I'm wondering how many vibrational modes it has and if they are all in phase. It would be cool to have a range of tuning frequencies as long as they aren't causing phase cancellations. I look for +/- 90 degrees of phase but sometimes bits of the radiator are doing different things, so the total swept displacement is hard to estimate.

@@TimpBizkit Agreed

😞

See my other movie with shorter songs and slow mo 🙂🦄

See my other movie with v2 unicorn setup 😍