PL-89 tower speakers & Klipsch RB-81 II bookshelfs as sealed

[dreadknot]

would pluging the ports on my pair of PL-89 tower speakers an the ports on my Klipsch RB-81 II
with some custom cut thick rubber to sort of make them sealed be ok or would it completly suck im feeding each of them 200watts from a xli 800 ?
iv got a parometric eq to use for room correction

 

[Sonnie Parker]

I would test them and see... measure the speaker with REW and look at the response both ways to see if plugging them helps. Then listen each way to make sure they are not restricted (over driven) at lower frequencies at the volume you prefer.

 

[dreadknot]

i did that once ports unplugged of course an the response that rew got showed the room correction need more peq adjustment the my receiver had or could do especially an the option to set the software to match my 10 band parametric eq so getting it to show the necessary room corrections base on my eq was doable so i did the best to improvise to smooth out the bass but it was just recently while watching a video on subs with plug for port option configs like hsu an svs i thought made pluging my ports might help

that said what would you suggest to test with a big wad of cotton or some waded socks

 

[Sonnie Parker]

Foam is the best thing to use, but a bunch of socks might work well enough to measure.

 

[dreadknot]

ok thank

 

[Juan Font]

You will get less total bass, but more extension (2nd order high-pass instead of 4th order) and less distortion (ports tend to generate strong even-order harmonics), at least at lower levels until the onset of woofer excursion limits. You will probably also get rid of some mid-bass colorations (the Reflex port duct's acoustic low-pass filter is not very effective at higher frequencies, allowing part of the woofer's rear radiation at mid-frequencies to escape thru the port).

I would strongly recommend plugging the ports on main speakers when using separate subwoofers. The smoother bass roll-off and the cleaner bass and midrange should merge much better with the subs.

I am currently using my front-ported B&W 683s2's with the supplied foam port plugs and I like them better, even though I don't have a subwoofer.

 

[dreadknot]

You will get less total bass, but more extension (2nd order high-pass instead of 4th order) and less distortion (ports tend to generate strong even-order harmonics), at least at lower levels until the onset of woofer excursion limits. You will probably also get rid of some mid-bass colorations (the Reflex port duct's acoustic low-pass filter is not very effective at higher frequencies, allowing part of the woofer's rear radiation at mid-frequencies to escape thru the port).

I would strongly recommend plugging the ports on main speakers when using separate subwoofers. The smoother bass roll-off and the cleaner bass and midrange should merge much better with the subs.

I am currently using my front-ported B&W 683s2's with the supplied foam port plugs and I like them better, even though I don't have a subwoofer.

sounds like a good idea to try what would be best for pluging to ports