Official Power Sound Audio Subwoofer Thread - Page 413 - AVS | Home Theater Discussions And Reviews
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Subwoofers, Bass, and Transducers > Official Power Sound Audio Subwoofer Thread
ahblaza's Avatar ahblaza 08:46 PM 06-19-2014
Quote:
Originally Posted by hmunster2 View Post
Ok, I have an xv15 and it occurred to me, if I plugged the port of the sub would I gain or lose anything? Would the sub respond more like a sealed sub? Just a crazy thought that crossed my mind. Maybe Tom can weigh in on this.
Thanks
NO NO NO, it is not designed for that, it would be very detrimental to sound quality. I asked that question many moons ago with Tom and he told me do not do it.

ahblaza's Avatar ahblaza 09:01 PM 06-19-2014
Jim and I were talking today about placement of my 3rd and 4th XV15SE and gave me a suggestion and I'm just waiting for FedEx to deliver my sub on Friday, they called earlier to confirm delivery for the 20th. I'm going to stack dual XV15SEs on their sides and have them front firing dual drivers. I'm making a XV30FSE with dual XV15SEs. My version will have 1100 watts of amp power, a XV30FSE on steroids. I'll be busy all day tomorrow and over the weekend making a bottom platform (raised) and putting thick rubber 2" diameter pucks with velcro to place the second sub on top of the bottom one. When I'm finished it will have the same dimensions and driver orientation and spacing as the XV30FSE only it will be juiced up, 2 X 550 watts firing directly at the MLP about 8-10' behind it. I will experiment with this idea for a week and then try other single locations and take notes and will make my location decision.
Cheers Jeff
basshead81's Avatar basshead81 09:23 PM 06-19-2014
Quote:
Originally Posted by hmunster2 View Post
Ok, I have an xv15 and it occurred to me, if I plugged the port of the sub would I gain or lose anything? Would the sub respond more like a sealed sub? Just a crazy thought that crossed my mind. Maybe Tom can weigh in on this.
Thanks
I tried it before I upgraded to the SE, the bass tightened up, lost some headroom and not much extension was gained due to the hpf and dsp tuning. If you want tighter bass upgrade it to the SE model. The XV15se sounds amazing with music where the original XV15 was good. Both sound amazing with movies...
digler84's Avatar digler84 10:43 PM 06-19-2014
Quote:
Originally Posted by RockDawg View Post
Then allow me to ask the unanswerable question - If an average Joe were to upgrade a XV15 to an XV15SE, would there be a noticeable difference? I don't mean something that takes a trained ear or test equipment to discern. I realize that everyone is different especially in regards to hearing (hence why I say "unanswerable"), but on average should there be a noticeable difference in bass?
i'm going to make this really simple for you and say ABSOLUTELY!. if you read past that i'll explain more....i don't own test equipment, i don't believe in graphs to tell me what i'm hearing or feeling. i simply put in source material that i am very familiar with and can hear in my head how it has sounded the countless times i've heard it. if you were able to make it through my quick review, you would have seen that I A/B'd the old and new with the same settings, same placement, and same source material at the same volume. all i can say is that it was COMPLETELY noticeable. totally night and day for real. ill be the first to say that i was skeptical about upgrading, and i'm sure tom will tell you that i asked him what the policy was if i upgraded and decided i liked the old version better. end of day, there is no way i'm staying with the old, and i will definitely upgrade sub 2 to the new version. this upgrade has been downplayed quite a bit, but it is NOT a subtle upgrade. not in the least.
cableguy301's Avatar cableguy301 11:47 PM 06-19-2014
Quote:
Originally Posted by ahblaza View Post
Jim and I were talking today about placement of my 3rd and 4th XV15SE and gave me a suggestion and I'm just waiting for FedEx to deliver my sub on Friday, they called earlier to confirm delivery for the 20th. I'm going to stack dual XV15SEs on their sides and have them front firing dual drivers. I'm making a XV30FSE with dual XV15SEs. My version will have 1100 watts of amp power, a XV30FSE on steroids. I'll be busy all day tomorrow and over the weekend making a bottom platform (raised) and putting thick rubber 2" diameter pucks with velcro to place the second sub on top of the bottom one. When I'm finished it will have the same dimensions and driver orientation and spacing as the XV30FSE only it will be juiced up, 2 X 550 watts firing directly at the MLP about 8-10' behind it. I will experiment with this idea for a week and then try other single locations and take notes and will make my location decision.
Cheers Jeff


the xv 30fse has a bit more peak watt power!


guess be close... the venting a bit different..


how big of a riser? 22 inches is a good number


cheers
bear123's Avatar bear123 11:59 PM 06-19-2014
Quote:
Originally Posted by ahblaza View Post
Jim and I were talking today about placement of my 3rd and 4th XV15SE and gave me a suggestion and I'm just waiting for FedEx to deliver my sub on Friday, they called earlier to confirm delivery for the 20th. I'm going to stack dual XV15SEs on their sides and have them front firing dual drivers. I'm making a XV30FSE with dual XV15SEs. My version will have 1100 watts of amp power, a XV30FSE on steroids. I'll be busy all day tomorrow and over the weekend making a bottom platform (raised) and putting thick rubber 2" diameter pucks with velcro to place the second sub on top of the bottom one. When I'm finished it will have the same dimensions and driver orientation and spacing as the XV30FSE only it will be juiced up, 2 X 550 watts firing directly at the MLP about 8-10' behind it. I will experiment with this idea for a week and then try other single locations and take notes and will make my location decision.
Cheers Jeff
I would place them on a roughly 24" high riser, directly to either side of your chair, firing directly at your face. Dual XV15se earmuffs!!

On a serious note, I would put one on each side of your two main seating positions as end tables.
hmunster2's Avatar hmunster2 07:16 AM 06-20-2014
Quote:
Originally Posted by ahblaza View Post
NO NO NO, it is not designed for that, it would be very detrimental to sound quality. I asked that question many moons ago with Tom and he told me do not do it.
Do you mean by your emphatic No that this would damage the sub?
Tom Vodhanel's Avatar Tom Vodhanel 08:26 AM 06-20-2014
Quote:
Originally Posted by hmunster2 View Post
Do you mean by your emphatic No that this would damage the sub?
Don't plug the port on the XV15se(or the XV30s). This would throw all of the excursion versus frequency versus output plots off completely. Those is one of the main determiners on how we encode the DSP to protect the system.

Tom V.
Power Sound Audio
hmunster2's Avatar hmunster2 08:57 AM 06-20-2014
Quote:
Originally Posted by Tom Vodhanel View Post
Don't plug the port on the XV15se(or the XV30s). This would throw all of the excursion versus frequency versus output plots off completely. Those is one of the main determiners on how we encode the DSP to protect the system.

Tom V.
Power Sound Audio
Thanks, Tom
Tom Vodhanel's Avatar Tom Vodhanel 09:35 AM 06-20-2014
Quote:
Originally Posted by hmunster2 View Post
Thanks, Tom
If curiosity gets the best of you and you have to try it....just keep the volume levels on the low to moderate side of things. Real music(not the "bass to kill your subwoofer" junk) really won't hurt anything. We had a customer plug the port on his XV30 a while back with interesting results. He said something about the subwoofer sounding more like a "woofer"?



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Tom V.
Power Sound Audio
Attached:
socal swagger's Avatar socal swagger 10:24 AM 06-20-2014
nice one
socal swagger's Avatar socal swagger 10:54 AM 06-20-2014
man u guys got me thinking upgrade
Attached: pics 079.jpg (127.5 KB) 
Tom Vodhanel's Avatar Tom Vodhanel 11:11 AM 06-20-2014
Hi all,

Josh will be measuring a new XV15se before too long so I figured posting our in house data on it won't hurt. I believe this is only the warm weather tests averaged but I will need to triple check that. Cold weather can lead to 1-2dB more output.

16 / 97.2
20 / 107.5
25 / 110.7
31 / 112.9
40 / 114.2
50 / 116.5
63 / 116.7
80 / 117
100 / 116.3

16-100 / 113.7

this is all 2m/rms. Add 9dB to scale to 1m/peak

Tom V.
Power Sound Audio
IanS's Avatar IanS 12:50 PM 06-20-2014
Tom:

Which sub model would you recommend for a music only 2.1 system? Room is 10' wide, 9' high and 12' deep, with 36" tall windows on 1 sidewall, and full-length mirrored doors along another (pretty live room acoustically, but it does have carpet and a massive media shelf on the back wall behind the speakers).

Speakers will be Adam Audio Artist 5 monitors on 42" pro audio stands. Desk/listening position is right in the middle of the room. My plan is to eventually use REW and a miniDSP 2x4 to do some EQing of the sub.

Thoughts?

Thank you.
Tom Vodhanel's Avatar Tom Vodhanel 01:06 PM 06-20-2014
Quote:
Originally Posted by IanS View Post
Tom:

Which sub model would you recommend for a music only 2.1 system? Room is 10' wide, 9' high and 12' deep, with 36" tall windows on 1 sidewall, and full-length mirrored doors along another (pretty live room acoustically, but it does have carpet and a massive media shelf on the back wall behind the speakers).

Speakers will be Adam Audio Artist 5 monitors on 42" pro audio stands. Desk/listening position is right in the middle of the room. My plan is to eventually use REW and a miniDSP 2x4 to do some EQing of the sub.

Thoughts?

Thank you.
Hello Ian,

For a smaller room like that, the XS15se would be a very good fit. Which preamp / receiver will you be using in the system? Hopefully something that will all you to highpass the monitors?

Tom V.
Power Sound Audio
bear123's Avatar bear123 01:32 PM 06-20-2014
oshia86's Avatar oshia86 02:26 PM 06-20-2014
After seeing the review of the XV30se on Databass I wanted to compare the size of that sub with others. I started putting together a bunch of rough boxes in CAD. Oh my, how my tiny PL-200 is dwarfed. I'll try to upload something when I can.
basshead81's Avatar basshead81 02:28 PM 06-20-2014
Quote:
Originally Posted by bear123 View Post
All in:
Looks like you removed the eq boost down low.
cableguy301's Avatar cableguy301 03:42 PM 06-20-2014
Quote:
Originally Posted by bear123 View Post
All in:


that looks like a pretty smooth sounding room bear.. is that what its saying.. 3 to 4 db range from 20 hz to 100 tuff to get flatter than that I bet..


cheers
bear123's Avatar bear123 03:57 PM 06-20-2014
Quote:
Originally Posted by basshead81 View Post
Looks like you removed the eq boost down low.
Nope. It removes itself on sweeps past 100-105 dB due to compression.
bear123's Avatar bear123 04:10 PM 06-20-2014
Lower level FR:
Attached: 16-200 dual xv15se 6-20.jpg (55.8 KB) 
basshead81's Avatar basshead81 04:24 PM 06-20-2014
What does a 115db sweep look like?
Alan P's Avatar Alan P 04:28 PM 06-20-2014
Quote:
Originally Posted by bear123 View Post
All in:
THAT...is a thing of beauty Bear.
bear123's Avatar bear123 04:40 PM 06-20-2014
I don't think I can get a very clean 115 sweep. I would probably only get more output from 50HZ up, and not a full 5 dB. Also my mains are compressing alot on the 110 sweep, likely due to low power from my AVR at that point. (see sig)

Below 30 Hz, above 110 db is pretty much fully compressed.
Attached: 105-110 db.jpg (75.7 KB) 
ahblaza's Avatar ahblaza 04:56 PM 06-20-2014
Quote:
Originally Posted by hmunster2 View Post
Do you mean by your emphatic No that this would damage the sub?
Sorry my friend if I came off a bit strong with the emphatic NO, as Tom said you see how problematic that would be. That's one reason no port plugs are shipped with the vented subwoofers
Cheers Jeff
IanS's Avatar IanS 05:09 PM 06-20-2014
Quote:
Originally Posted by Tom Vodhanel View Post
Hello Ian,

For a smaller room like that, the XS15se would be a very good fit. Which preamp / receiver will you be using in the system? Hopefully something that will all you to highpass the monitors?

Tom V.
Power Sound Audio
Thanks. XS15se is what I was thinking, but I thought I should ask. I guess I haven't thought through the preamp properly. I was planning on using the pre-outs from a Creek 4330 Integrated straight in to a miniDSP 2x4, and out from there to my powered monitors and your sub.

Would I be able to use the miniDSP as a highpass for the monitors? If not, what is a reasonably priced receiver/preamp for 2.1 audio with good mains/sub control?
ahblaza's Avatar ahblaza 05:11 PM 06-20-2014
Quote:
Originally Posted by bear123 View Post
I would place them on a roughly 24" high riser, directly to either side of your chair, firing directly at your face. Dual XV15se earmuffs!!

On a serious note, I would put one on each side of your two main seating positions as end tables.
Bear I think you're right. I have the room to spread the four subs out and reap the benefits of a smooth FR and non localization, if I wanted an XV30F I would have bought one. Now that all four are here and spread out they just look so good, I'm going to run the two 35' BJC sub cables tonight and begin the calibration. Seriously what are you're thoughts of the stacking and front firing dual XV15SEs?
Cheers Jeff
ahblaza's Avatar ahblaza 05:23 PM 06-20-2014
Quote:
Originally Posted by IanS View Post
Thanks. XS15se is what I was thinking, but I thought I should ask. I guess I haven't thought through the preamp properly. I was planning on using the pre-outs from a Creek 4330 Integrated straight in to a miniDSP 2x4, and out from there to my powered monitors and your sub.

Would I be able to use the miniDSP as a highpass for the monitors? If not, what is a reasonably priced receiver/preamp for 2.1 audio with good mains/sub control?
I'm thinking Outlaw 975 pre-pro.

http://www.outlawaudio.com/products/975.html
Tom Vodhanel's Avatar Tom Vodhanel 06:13 PM 06-20-2014
Quote:
Originally Posted by IanS View Post
Thanks. XS15se is what I was thinking, but I thought I should ask. I guess I haven't thought through the preamp properly. I was planning on using the pre-outs from a Creek 4330 Integrated straight in to a miniDSP 2x4, and out from there to my powered monitors and your sub.

Would I be able to use the miniDSP as a highpass for the monitors? If not, what is a reasonably priced receiver/preamp for 2.1 audio with good mains/sub control?
You should be good.

http://www.minidsp.com/applications/...n-with-minidsp

Also, the artist 5 monitors have built in "shelving" options that may work to attenuate the deeper frequencies too. I'm not sure what the specifics are though.

Tom V.
Power Sound Audio
bear123's Avatar bear123 06:18 PM 06-20-2014
Quote:
Originally Posted by ahblaza View Post
Seriously what are you're thoughts of the stacking and front firing dual XV15SEs?
Cheers Jeff
I don't think the orientation of the driver affects much, although near field, for the extra tactile effect, firing them sideways into the chairs may increase the effect.

I would place them on each side of your two recliners, so each seat has a nearfield sub, as endtables. Experiment if side firing them into the chairs makes a difference. If your FR is good with them here I think that would work well.
Tags: Xs30 , Velodyne Sms 1 In Room Bass Correction Kit With Included Microphone , Denon Avr 3313ci Receiver , Denon Avr 4520ci Receiver , Power Sound Audio , Xv15 , Power Sound Audio Triax , Room Equilizer Wizard Rew , Denon Avr X4000 7 2 Channel Home Theater Receiver
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