Adjustable passive radiator series tuned 6th order.

[SlugButter]

I'm in the Mile High City too - Go Broncos!!!!!

I forget the name of that handyman place, but it was up close to Westerkamps meat market. It’s been a lot of years now, but up close to I-70 and I-25 interchange. Washington street I think.

 

[SlugButter]

I'm in the Mile High City too - Go Broncos!!!!!

They might have a shot to be good with Russel Wilson now. Seattle now has Drew Lock. Lol

 

[Jimi77]

They might have a shot to be good with Russel Wilson now. Seattle now has Drew Lock. Lol

And Lock just got Covid. Dude can't catch a break.

 

[SlugButter]

Brother went on vacation and wanted his music for his trip, so this build is one hold for a few weeks. Did a project using a cheap Chinese 2 channel BT amplifier and some 6x9 speakers I had lying around instead of his build today.. Amp does about 30 watts rms x 2. Actually sounds pretty darn nice and is really loud with these high sensitivity speakers. Hank the hater is up in arms.

 

[SilverSquared]

Quick random question:
When you build an enclosure and utilize PRs, do you still use polyfill?

 

[Jimi77]

Quick random question:
When you build an enclosure and utilize PRs, do you still use polyfill?

You can. I have Polk S10 home audio speakers - they have a PR and Polyfil. Depends on the app and what you're trying to accomplish.

 

[SlugButter]

Quick random question:
When you build an enclosure and utilize PRs, do you still use polyfill?

I always use polyfill in any sealed chamber that a sub motor sits in. Inside a vacuum, which is what a sealed chamber is, any air inside will be an adiabatic air mass. Basically the air will move, but the heat wont move and will sit where the heat is created, which is around the coil. Using polyfill helps create an isothermal air mass where heat is moved around with the air inside the vacuum. In theory, this should help dissipate heat more evenly inside the box and keep the coil cooler. I’ve always used it. A passive system might not need polyfill, since they are pushing and pulling opposite the sub, but I don’t see why you couldn’t use it. I used some in my passive radiator setup.

 

[SilverSquared]

I always use polyfill in any sealed chamber that a sub motor sits in. I used some in my passive radiator setup.

Doing it this week. I have a stock Dodge Challenger Harmon Kardon subwoofer system. There are a pair of dual voice coil 10" subs. Strangely only 3 coils are wired. So I am thinking I will pull both 10s out, drop one beefier one in, and fill the hole with a passive radiator, after I load 'er up with some of that poly fill.

Now I need to find an amp with high level inputs. Looking into a few. Skar, NVX, and a few others.