|
|
Post by iamwardicus on Sept 4, 2020 19:29:30 GMT -5
Just wondering if it's ok to port plug the T2+ speakers? I'm very interested in getting a C2+ & T2+ 3.0 front stage but my clearances to my wall are tight due to my home theater being in a spare bedroom (apartment living). Will it hurt the T2 speakers to have the ports plugged to prevent "boominess"?
100% PS4 gaming & HT use. No music on this setup.
Thanks for any advice!
|
|
|
|
Post by knucklehead on Sept 4, 2020 19:50:32 GMT -5
No, in fact if you put them up against the wall and did nothing you probably wouldn't like the sound. You may need a sub if you want to cover the full audio spectrum.
|
|
|
|
Post by iamwardicus on Sept 4, 2020 21:55:45 GMT -5
No, in fact if you put them up against the wall and did nothing you probably wouldn't like the sound. You may need a sub if you want to cover the full audio spectrum. I have a sealed Jamo sub if I need one. I'm mostly wondering if running "full" size speaker mode on my receiver and port plugs would be beneficial in my situation, or might it be better to just run the speakers as "small" and deal with the 80hz limitation. I can get acoustic foam to make port plugs - I just want to ensure it won't hurt the speaker as I assume if they were intended to have them they would come with them (similar to Chane speakers which I've also considered as I love the A2.4 I have on my desktop - I just want the 3 ways that Emotiva offers for my HT setup). |
|
geebo
Emo VIPs 
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
Member is Online
|
Post by geebo on Sept 4, 2020 22:50:24 GMT -5
I talked to the designer about this because mine T2's are close to the rear wall. He suggested about a 1 1/2" tube wrapped in foam to plug the hole and it worked out fine.
|
|
|
|
Post by ttocs on Sept 4, 2020 22:59:49 GMT -5
No, in fact if you put them up against the wall and did nothing you probably wouldn't like the sound. I just want to ensure it won't hurt the speaker as I assume if they were intended to have them they would come with them. I agree that ports against the wall don't sound their best. Plugging the port won't hurt the speaker. When I bought a pair of Martin Logan Vistas almost ten years ago I wanted to plug the ports, so I sent an email to ask. The response was - no harm, no foul. I was told that plugging the ports is used to tune to taste. |
|
|
|
Post by Boomzilla on Sept 5, 2020 9:45:51 GMT -5
I've plugged my T2 ports before with a couple of pairs of socks. Worked fine and did reduce the bass. The mid bass did sound kind of muffled, but not too bad. Did NOT hurt the speakers.
|
|
|
|
Post by ttocs on Sept 5, 2020 10:05:51 GMT -5
^^^^^^
I thought I was the only who used socks to plug ports.
|
|
|
|
Post by 405x5 on Sept 5, 2020 10:44:46 GMT -5
^^^^^^ I thought I was the only who used socks to plug ports. I tried that also, only I grabbed them from the Hamper.....that didn’t go well  |
|
|
|
Post by leonski on Oct 1, 2020 15:32:09 GMT -5
I've plugged my T2 ports before with a couple of pairs of socks. Worked fine and did reduce the bass. The mid bass did sound kind of muffled, but not too bad. Did NOT hurt the speakers. I hope you used CLEAN socks! Whew! |
|
|
|
Post by Boomzilla on Oct 1, 2020 15:59:09 GMT -5
I've plugged my T2 ports before with a couple of pairs of socks. Worked fine and did reduce the bass. The mid bass did sound kind of muffled, but not too bad. Did NOT hurt the speakers. I hope you used CLEAN socks! Whew! Stockings sound silkier... |
|
|
|
Post by leonski on Oct 2, 2020 22:57:20 GMT -5
My HSU Research sub comes with DOUBLE ports and a single plug.
One way is 'maximum extension' and the other way is 'maximum output'....
To make it work? Install the plug and flip a switch on the amp......
|
|
|
|
Post by brutiarti on Mar 21, 2023 10:04:07 GMT -5
I talked to the designer about this because mine T2's are close to the rear wall. He suggested about a 1 1/2" tube wrapped in foam to plug the hole and it worked out fine. , are you reducing the port size or completely blocked? I need to move my T2s close to the wall for now. Do you have any pics or how you did it? Thanks |
|
geebo
Emo VIPs
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
Member is Online
|
Post by geebo on Mar 21, 2023 11:13:02 GMT -5
; I talked to the designer about this because mine T2's are close to the rear wall. He suggested about a 1 1/2" tube wrapped in foam to plug the hole and it worked out fine. , are you reducing the port size or completely blocked? I need to move my T2s close to the wall for now. Do you have any pics or how you did it? Thanks Sorry, no pics but it's really simple. I got a 1.5" diameter tube and surrounded it with foam and packed it into the port essentially making the port smaller. You can try different size tubes or even plug the port completely if you like. You could use PVC or hard cardboard or whatever you can find that won't cave in for the tube. 3" or 4" long is all that's needed. Here is a part of the exchange I had with Rory who was the head designer of the original T series. Rory: There are numerous options you can try for plugging the port. None of them will break the speaker, so feel free to experiment. You're fluent in using tools like REW, so you can see what the effect of a different port plug may be.
A device like the one you described would lower the speaker's tuning, and cause the roll-off to become more gradual and to begin at a higher frequency (a more "damped" characteristic). But if completely plugging the port did not eliminate the bump then the best way to control it is probably with room EQ or a more intensive correction such as Dirac.
Me: So after a little experimentation this is what I found:
A 1.5" tube surrounded by foam reduces the bass output at 45Hz by about 5~6dB and completely plugging the port only reduces it by another dB. So I intend to leave the tube in on the right speaker. With the left speaker I get best results with the port open. This is because the first speaker is about 4' from a side wall and the left has much more room to breathe. Any problem with using the 1.5" tube in one speaker and leaving the other's port open?
Rory: No problem at all with that. I'm glad you found something that works.
|
|
|
|
Post by brutiarti on Mar 21, 2023 11:24:43 GMT -5
; geebo , are you reducing the port size or completely blocked? I need to move my T2s close to the wall for now. Do you have any pics or how you did it? Thanks Sorry, no pics but it's really simple. I got a 1.5" diameter tube and surrounded it with foam and packed it into the port essentially making the port smaller. You can try different size tubes or even plug the port completely if you like. You could use PVC or hard cardboard or whatever you can find that won't cave in for the tube. 3" or 4" long is all that's needed. Here is a part of the exchange I had with Rory who was the head designer of the original T series. Rory: There are numerous options you can try for plugging the port. None of them will break the speaker, so feel free to experiment. You're fluent in using tools like REW, so you can see what the effect of a different port plug may be.
A device like the one you described would lower the speaker's tuning, and cause the roll-off to become more gradual and to begin at a higher frequency (a more "damped" characteristic). But if completely plugging the port did not eliminate the bump then the best way to control it is probably with room EQ or a more intensive correction such as Dirac.
Me: So after a little experimentation this is what I found:
A 1.5" tube surrounded by foam reduces the bass output at 45Hz by about 5~6dB and completely plugging the port only reduces it by another dB. So I intend to leave the tube in on the right speaker. With the left speaker I get best results with the port open. This is because the first speaker is about 4' from a side wall and the left has much more room to breathe. Any problem with using the 1.5" tube in one speaker and leaving the other's port open?
Rory: No problem at all with that. I'm glad you found something that works.
Thanks Geebo for the useful information. Time to experiment |
|
geebo
Emo VIPs
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
Member is Online
|
Post by geebo on Mar 21, 2023 11:35:14 GMT -5
;Sorry, no pics but it's really simple. I got a 1.5" diameter tube and surrounded it with foam and packed it into the port essentially making the port smaller. You can try different size tubes or even plug the port completely if you like. You could use PVC or hard cardboard or whatever you can find that won't cave in for the tube. 3" or 4" long is all that's needed. Here is a part of the exchange I had with Rory who was the head designer of the original T series. Rory: There are numerous options you can try for plugging the port. None of them will break the speaker, so feel free to experiment. You're fluent in using tools like REW, so you can see what the effect of a different port plug may be.
A device like the one you described would lower the speaker's tuning, and cause the roll-off to become more gradual and to begin at a higher frequency (a more "damped" characteristic). But if completely plugging the port did not eliminate the bump then the best way to control it is probably with room EQ or a more intensive correction such as Dirac.
Me: So after a little experimentation this is what I found:
A 1.5" tube surrounded by foam reduces the bass output at 45Hz by about 5~6dB and completely plugging the port only reduces it by another dB. So I intend to leave the tube in on the right speaker. With the left speaker I get best results with the port open. This is because the first speaker is about 4' from a side wall and the left has much more room to breathe. Any problem with using the 1.5" tube in one speaker and leaving the other's port open?
Rory: No problem at all with that. I'm glad you found something that works.
Thanks Geebo for the useful information. Time to experiment Let me know what you come up with, please. |
|
|
|
Post by brutiarti on Mar 22, 2023 10:20:03 GMT -5
geebo, after some experimentation I ended with a 1- 3/4" tube with foam. 
|
|
geebo
Emo VIPs
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
Member is Online
|
Post by geebo on Mar 22, 2023 10:25:41 GMT -5
Awesome. How are they sounding in their new position? |
|
|
|
Post by Boomzilla on Mar 23, 2023 9:50:57 GMT -5
My HSU Research sub comes with DOUBLE ports and a single plug.... I had a girlfriend like that... |
|
|
|
Post by marcl on Mar 23, 2023 10:17:19 GMT -5
My HSU Research sub comes with DOUBLE ports and a single plug.... I had a girlfriend like that... My Outlaw UntraX12 is like that too. Two choices: Plug one port and leave the other open, flip switch to Max Extension (17Hz); or leave both ports open and flip switch to Max Output (high pass at 20Hz). I tried both and left it plugged for max extension. |
|
KeithL
Administrator 
Posts: 9,945
|
Post by KeithL on Mar 23, 2023 11:36:26 GMT -5
You're making it complicated... But do note that it will change the sound of the bass (possibly in unpredictable ways)... (Especially if you plug one port in a speaker with two... in which case you are changing the tuning of the overall enclosure.) Try it and see what works for you... A piece of dense sponge foam should work... Or, if you want it prettier, put the foam in a sock... You can buy "craft cylinders" and "pool noodles" in a variety of sizes and colors. (Just remember that you need to buy larger... and squeeze it in... or it will just pop out with the next big bass note.  ) Also note that, if you use something like acrylic pillow stuffing, or pillow stuffing in a sock, you will restrict but not block the port. This can produce some interesting - and rather different - results. (Someone here must remember Dynaco's "aperiodic" speakers... ) It's also worth mentioning that, on speakers with tuned ports, the port does serve to limit the movement of the woofers at and around the tuned frequency. So, if you block the ports, a woofer will tend to move more at the frequency the port was tuned to. This means that, with some speakers, especially some older ones, blocking the port may result in excessive woofer movement. I would be especially careful about doing it with a sub... unless the manufacturer says it's OK... or if you like massive amounts of bass and have a lot of power. However, since you are basically making your speaker into a sealed design, the woofer will tend to move less at very low frequencies (like record rumble). I talked to the designer about this because mine T2's are close to the rear wall. He suggested about a 1 1/2" tube wrapped in foam to plug the hole and it worked out fine. , are you reducing the port size or completely blocked? I need to move my T2s close to the wall for now. Do you have any pics or how you did it? Thanks |
|
)