Passive Radiators

[onebadmonte 235]

I noticed Mach 5 Audio is now offering a MJ18-PR. Are there more sizes to come? I dig the box Mark made with a IXL 15 and the MJ18-PR. Dreaming out loud. I'd like to build a box with 3 IXL 10's firing up and 3 rear firing 10" PR's for my stang. Hint, hint, make a 10" PR. Keep the excellent products coming.

[lithium 358]

how would the PR work in a car set up?

[Jybfan04 1]

how would the PR work in a car set up?

The same way they work in HT the same concept is applied..

[JimJ 11]

I noticed Mach 5 Audio is now offering a MJ18-PR. Are there more sizes to come? I dig the box Mark made with a IXL 15 and the MJ18-PR. Dreaming out loud. I'd like to build a box with 3 IXL 10's firing up and 3 rear firing 10" PR's for my stang. Hint, hint, make a 10" PR. Keep the excellent products coming.

One problem I see with that would be you'd need 2x the swept volume for the PR's, which would mean six 10" PRs...besides, Seas already makes a 10" PR

You could do it, but IMHO, it's impractical and not worth the extra expense over a traditional bass reflex for something like this...

[onebadmonte 235]

Six 10" PR's. Whoa! It was a nice thought while it lasted.

[mrogowski 6]

Depending on the excursion capabilities of your active drivers, passives and planned input power, this will determine how many you will require. For example. you could squeeze two IXL-10's per one MJ-PR provided you don't drive the subs too much below the tuning of the box.

But Jim is right, the general rule for passives is about 2x the cone area/throw to each active driver.

Best,

Mark

[onebadmonte 235]

Depending on the excursion capabilities of your active drivers, passives and planned input power, this will determine how many you will require. For example. you could squeeze two IXL-10's per one MJ-PR provided you don't drive the subs too much below the tuning of the box.

But Jim is right, the general rule for passives is about 2x the cone area/throw to each active driver.

Best,

Mark

Hey, now there's a thought. Two tens rear firing and an 18" firing up. I might just have to take you up on that.

[todd.brust 29]

Depending on the excursion capabilities of your active drivers, passives and planned input power, this will determine how many you will require. For example. you could squeeze two IXL-10's per one MJ-PR provided you don't drive the subs too much below the tuning of the box.

But Jim is right, the general rule for passives is about 2x the cone area/throw to each active driver.

Best,

Mark

Hey, now there's a thought. Two tens rear firing and an 18" firing up. I might just have to take you up on that.

I wouldn't have A PR up-firing because they tend to have a good deal of weight to them and would most likely cause the suspension to sag. My 1050g PRs sag is i even lay them on their back.

Also in a car, I would think the PRs would have a lot of unwanted movement from the forces from turning and bumps in the road.

Just my 2 cents

[mrogowski 6]

Excellent point on the car movement Todd. That never crossed my mind. A person would have to ensure the cabinet is sealed real tight to minimize such things.

The weight thing is largely dependent on how strong/stiff your suspension is.