Official Power Sound Audio Subwoofer Thread - Page 422 - AVS | Home Theater Discussions And Reviews

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Subwoofers, Bass, and Transducers

bear123's Avatar bear123
08:17 PM Liked: 1033
post #12631 of 17364
07-03-2014 | Posts: 3,065
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Quote:
Originally Posted by Magibeg View Post
Good news!

I talked to Tom and did some trouble shooting tonight and my XV15se is now pounding away properly.... once we added a Y cable and plugged into both inputs the sub promptly blew my face off.
Nice! lol
climber07's Avatar climber07
08:25 PM Liked: 1064
post #12632 of 17364
07-03-2014 | Posts: 1,834
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Quote:
Originally Posted by Magibeg View Post
Good news!
Very very happy! I can barely imagine what it must be like to have 2.. or more of them!
Glad you got it up and running brother.
digler84's Avatar digler84
09:51 PM Liked: 162
post #12633 of 17364
07-03-2014 | Posts: 299
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Quote:
Originally Posted by Magibeg View Post
I can barely imagine what it must be like to have 2.. or more of them!
oh, trust me...you will know soon enough when that bug bites you again!
flydeep's Avatar flydeep
07:26 AM Liked: 41
post #12634 of 17364
07-04-2014 | Posts: 215
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Yep, start off with one, then two and three. Now you will keep wondering how would a 4th sound
Quote:
Originally Posted by digler84 View Post
oh, trust me...you will know soon enough when that bug bites you again!

leadliner's Avatar leadliner
08:44 AM Liked: 12
post #12635 of 17364
07-04-2014 | Posts: 174
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i have had the same experience with mine, i guess its ok to use a y connector. the manual says to just plug in left/lfe. what gives..
climber07's Avatar climber07
09:28 AM Liked: 1064
post #12636 of 17364
07-04-2014 | Posts: 1,834
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Quote:
Originally Posted by leadliner View Post
i have had the same experience with mine, i guess its ok to use a y connector. the manual says to just plug in left/lfe. what gives..
The "Y" splitter is recommended when the auto power on feature doesn't power the subwoofer on. Some AVR may output a lower level LFE signal (especially when calibrating) preventing the sub amp from powering on. My old JBL was like that.

INPUTS
The subwoofer INPUTS consist of LEFT/LFE and RIGHT RCA
jacks. You only need to use the LEFT/LFE connection if you are
using a receiver or processor with an LFE or subwoofer output.
You can use a Y-connector on the subwoofer if it doesn’t power
up in AUTO mode at low levels. (Please make sure to recalibrate
if you use a Y-connector.)
Magibeg's Avatar Magibeg
10:50 AM Liked: 32
post #12637 of 17364
07-04-2014 | Posts: 169
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Quote:
Originally Posted by climber07 View Post
The "Y" splitter is recommended when the auto power on feature doesn't power the subwoofer on. Some AVR may output a lower level LFE signal (especially when calibrating) preventing the sub amp from powering on. My old JBL was like that.

INPUTS
The subwoofer INPUTS consist of LEFT/LFE and RIGHT RCA
jacks. You only need to use the LEFT/LFE connection if you are
using a receiver or processor with an LFE or subwoofer output.
You can use a Y-connector on the subwoofer if it doesn’t power
up in AUTO mode at low levels. (Please make sure to recalibrate
if you use a Y-connector.)
The interesting thing with my experience was that the amp WAS powering on. Unfortunately though the signal must have been very weak, enough to turn it on, but not enough to give any meaningful LFE experience. It still doesn't calibrate properly on the first pass of Audyssey which makes me think that down the road when I get a better receiver I might get the unexpected benefit of slightly more bass.
tboe77's Avatar tboe77
11:27 AM Liked: 127
post #12638 of 17364
07-04-2014 | Posts: 744
Joined: Jul 2008
Glad you got it sorted, Magibeg. How's your face?!?! (That comment gave me a good laugh!)
Tom Vodhanel's Avatar Tom Vodhanel
11:33 AM Liked: 1628
post #12639 of 17364
07-04-2014 | Posts: 1,752
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Quote:
Originally Posted by leadliner View Post
i have had the same experience with mine, i guess its ok to use a y connector. the manual says to just plug in left/lfe. what gives..
It is always okay to use a Y and hit both inputs on the sub. However it is usually not required to achieve maximum performance. In most cases using a Y split will double the input voltage as both inputs still receive the same voltage but it is summed before the amplification stage.

The variables here are,

1)The output voltage from the receiver's sub out RCA jack (and how this varies with both master volume and bass level control changes)

2)The input sensitivity of the subwoofer jack(which is controlled by the GAIN control on the sub---remember, the gain control is not a volume control)

3)The input impedance of the subwoofer jack(and how it relates to the impedance of the subwoofer output jack on the receiver).

In about 499 cases out of 500(estimate of course), a single mono cable to either input will provide all the "gain" needed to push our products to their full potential. A few times a year we'll run into one of these cases where something in the gain structure chain just isn't allowing the subwoofer to "see" enough input voltage to reach its performance capabilities.

I would say, as a rule of thumb, if you need to have our gain control set any higher than the "3 o;clock" positioning on the dial....try an inexpensive Y cable.

Tom V.
Power Sound Audio
Magibeg's Avatar Magibeg
12:09 PM Liked: 32
post #12640 of 17364
07-04-2014 | Posts: 169
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Quote:
Originally Posted by tboe77 View Post
Glad you got it sorted, Magibeg. How's your face?!?! (That comment gave me a good laugh!)
Face is pretty good after I managed to wipe the smile off of it. I attached the Y cable, ran through calibration where the sub failed to play the tone the first time but did the next 2 times so it wasn't a proper calibration. The receiver set all the speakers between -8dB and -9.5dB as based on my sitting position but put the sub to +4dB (because it didn't hear the first tone).

Luckily for me I took the initiative to reduce that to -2dB instead of +4dB (subs gain is at the 2 o'clock position). The room was extremely quiet because of running all the calibration during troubleshooting. So I went from a dead quiet room to sudden incredible bass as soon as i popped in some content, hence the "blew my face off" comment.

I now run the sub woofer at -7.5dB and it feels pretty well balanced with my system now.
AndrewB2
01:25 PM Liked: 2
post #12641 of 17364
07-04-2014 | Posts: 6
Joined: Jun 2014
After dismantling my subwoofer to remove the amp for the upgrade, I noticed the rubber feet can be detached from the legs. Now my questions is, would it be a bad idea to remove the rubber feet? The only reason I ask is because without the feet, the subwoofer would fit under my projector screen and give me quite a few more options for placement. My theatre room is carpeted, so sliding due to vibration would not be an issue.

Has anyone here removed the rubber feet from their XV15 without issue?
bear123's Avatar bear123
02:11 PM Liked: 1033
post #12642 of 17364
07-04-2014 | Posts: 3,065
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Quote:
Originally Posted by AndrewB2 View Post
After dismantling my subwoofer to remove the amp for the upgrade, I noticed the rubber feet can be detached from the legs. Now my questions is, would it be a bad idea to remove the rubber feet? The only reason I ask is because without the feet, the subwoofer would fit under my projector screen and give me quite a few more options for placement. My theatre room is carpeted, so sliding due to vibration would not be an issue.

Has anyone here removed the rubber feet from their XV15 without issue?
The XV15 is downfiring, and the driver moves. Removing the legs would likely cause the driver to hit the floor. So I would say bad idea.
Tom Vodhanel's Avatar Tom Vodhanel
03:15 PM Liked: 1628
post #12643 of 17364
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Quote:
Originally Posted by bear123 View Post
The XV15 is downfiring, and the driver moves. Removing the legs would likely cause the driver to hit the floor. So I would say bad idea.
He may just be referring to the molded rubber extension on the bottom of the machined nylon stand-offs? The Machine nylon is about 1.75" The rubber extension is about 0.625. I would give it. You'll have about 1.5 inch of clearance between the driver surround and the floor. So unless the carpet is Ron Burgundy shagadelic I bet it works fine.

Also, not sure if it is an option for you but the XV15se will operate fine on its side with the driver facing the seating(or at a 90 degree angle).

Tom V.
Power Sound Audio
cableguy301's Avatar cableguy301
06:44 PM Liked: 61
post #12644 of 17364
07-04-2014 | Posts: 448
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Quote:
Originally Posted by Tom Vodhanel View Post
He may just be referring to the molded rubber extension on the bottom of the machined nylon stand-offs? The Machine nylon is about 1.75" The rubber extension is about 0.625. I would give it. You'll have about 1.5 inch of clearance between the driver surround and the floor. So unless the carpet is Ron Burgundy shagadelic I bet it works fine.

Also, not sure if it is an option for you but the XV15se will operate fine on its side with the driver facing the seating(or at a 90 degree angle).

Tom V.
Power Sound Audio

do you sell any option grills for side mounting or upside down mounting with a sealed xs15se..?


thanks
bear123's Avatar bear123
07:14 PM Liked: 1033
post #12645 of 17364
07-04-2014 | Posts: 3,065
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Quote:
Originally Posted by Tom Vodhanel View Post
He may just be referring to the molded rubber extension on the bottom of the machined nylon stand-offs? The Machine nylon is about 1.75" The rubber extension is about 0.625.

Tom V.
Power Sound Audio

Ah, did not realize they were a two piece design.
cableguy301's Avatar cableguy301
10:03 PM Liked: 61
post #12646 of 17364
07-04-2014 | Posts: 448
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wow fedex says my subs will be here Monday a day ahead... nice .. already across the boarder into Canada.. so close now but yet so far he he he












my twins










cableguy301's Avatar cableguy301
10:05 PM Liked: 61
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labman1's Avatar labman1
07:51 AM Liked: 18
post #12648 of 17364
07-05-2014 | Posts: 88
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Pulled the trigger on the XS15 upgrade! The wait for the Box begins. Any tips on taking driver out or is it straight forward?
Gov's Avatar Gov
08:00 AM Liked: 143
post #12649 of 17364
07-05-2014 | Posts: 3,328
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Besides the $500 to upgrade my dual XV15's and the possibility of a bit less extension in my rather large open room, tell me why I should not do it??
Billy p's Avatar Billy p
08:42 AM Liked: 251
post #12650 of 17364
07-05-2014 | Posts: 1,351
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Quote:
Originally Posted by labman1 View Post
Pulled the trigger on the XS15 upgrade! The wait for the Box begins. Any tips on taking driver out or is it straight forward?
I'll install the new driver at some point today...IIRC...Jim told me the new drivers are wired in parallel he also included an instruction pamphlet...pretty straight forward I'd say but I've been known to mess things up on occasion...when putting things back together...lol.
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Mike Butny's Avatar Mike Butny
08:49 AM Liked: 163
post #12651 of 17364
07-05-2014 | Posts: 646
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Quote:
Originally Posted by Gov View Post
Besides the $500 to upgrade my dual XV15's and the possibility of a bit less extension in my rather large open room, tell me why I should not do it??
For $400 more you can buy a XV15se and have 3 subs 1 se and 2 non se, just a thought.
digler84's Avatar digler84
09:04 AM Liked: 162
post #12652 of 17364
07-05-2014 | Posts: 299
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Quote:
Originally Posted by Gov View Post
Besides the $500 to upgrade my dual XV15's and the possibility of a bit less extension in my rather large open room, tell me why I should not do it??
i'm telling you right now, i was very concerned about the "loss of extension" to the point i almost didn't do it. don't believe the hype....put it in your room and you will laugh at the graphs. i did one upgrade and kept the old version for a later date so i could a/b them figuring that if i preferred the extension of the old version that i could just send back the upgrade. i played WOTW as i typically do to test the subs. i'm not joking when i tell you that the single upgraded unit blew me away. i played the OG version first, and it sounded as i expected it to. i then paused the movie, pulled the OG out of the corner and replaced it with the new version with amp settings identical to the old. replayed the pod scene and it was stronger, louder, tighter, and seemed like it dug deeper. the new one is heads and tails better....and as soon as i get the upgrade money for the second one i will have those boxes delivered! well worth the upgrade price.
basshead81's Avatar basshead81
09:17 AM Liked: 1976
post #12653 of 17364
07-05-2014 | Posts: 6,910
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Quote:
Originally Posted by Mike Butny View Post
For $400 more you can buy a XV15se and have 3 subs 1 se and 2 non se, just a thought.
Yea but after Gov gets the XV SE and realizes the difference, he will still spend 500.00 to upgrade the other 2. I say spend the 500.00 to upgrade now rather then spending 1399.00 for another SE, and 2 upgrade kits.

Digler, I agree with 99% percent of what you just posted, but the graphs do not lie. The old driver definitely had better extension below 16hz. The kicker is once below 16hz neither version puts out enough output to notice. What you are hearing is the extra headroom around 18-25hz. I gained 5db+ headroom on the Pulse Server scene.
AndrewB2
09:30 AM Liked: 2
post #12654 of 17364
07-05-2014 | Posts: 6
Joined: Jun 2014
Quote:
Originally Posted by Tom Vodhanel View Post
He may just be referring to the molded rubber extension on the bottom of the machined nylon stand-offs? The Machine nylon is about 1.75" The rubber extension is about 0.625. I would give it. You'll have about 1.5 inch of clearance between the driver surround and the floor. So unless the carpet is Ron Burgundy shagadelic I bet it works fine.
Quote:
Originally Posted by bear123 View Post
Ah, did not realize they were a two piece design.
Yes, I only want to remove the rubber extensions. I would have never known they detached myself had I not taken a closer look at the legs when I was dismantling the subwoofer for the upgrade. I don't think my carpet will be a problem.

Quote:
Originally Posted by Tom Vodhanel View Post
Also, not sure if it is an option for you but the XV15se will operate fine on its side with the driver facing the seating(or at a 90 degree angle).

Tom V.
Power Sound Audio
I never would have thought to try turning the XV15se on its side, thanks! Now I definitely have some experimenting to do when everything arrives and I get it all put back together.
Brian Fineberg's Avatar Brian Fineberg
09:41 AM Liked: 1082
post #12655 of 17364
07-05-2014 | Posts: 4,613
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Definitely need someone to graph the difference for an xs30 upgrade kit

I'm now officially intrigued again lol.

Thinking upgrade one now and another down the road
basshead81's Avatar basshead81
12:50 PM Liked: 1976
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07-05-2014 | Posts: 6,910
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Quote:
Originally Posted by Brian Fineberg View Post
Definitely need someone to graph the difference for an xs30 upgrade kit

I'm now officially intrigued again lol.

Thinking upgrade one now and another down the road
Aside from doing max output sweeps(which nobody ever posts), I do not think the differences can be measured any other way. Your best bet is to compare and analyze the Long term compression charts between the XS30 and XS30se and you will see 3-5db more headroom before compression starts on the low end. If you do not listen at levels greater than100-105db, then that probably will not be a big deal, but there still will be a noticeable difference is sound quality.
Mike Butny's Avatar Mike Butny
01:30 PM Liked: 163
post #12657 of 17364
07-05-2014 | Posts: 646
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Quote:
Originally Posted by basshead81 View Post
Aside from doing max output sweeps(which nobody ever posts), I do not think the differences can be measured any other way. Your best bet is to compare and analyze the Long term compression charts between the XS30 and XS30se and you will see 3-5db more headroom before compression starts on the low end. If you do not listen at levels greater than100-105db, then that probably will not be a big deal, but there still will be a noticeable difference is sound quality.
That says it all!!! I do not do graphs and I noticed the cleaner output with my XS30se right away, your ears will tell you its money well spent!!!!!!
Tom Vodhanel's Avatar Tom Vodhanel
01:36 PM Liked: 1628
post #12658 of 17364
07-05-2014 | Posts: 1,752
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Quote:
Originally Posted by Mike Butny View Post
For $400 more you can buy a XV15se and have 3 subs 1 se and 2 non se, just a thought.
Actually it would be a bit less, 5% returning customer discount. So about $354 more.

Tom V.
Power Sound Audio
Billy p's Avatar Billy p
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07-05-2014 | Posts: 1,351
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Mission accomplished but not without a hitch. My assistant (cough wife...cough...) must of pulled to hard and disconnected one of the wire terminals from the amp...so I had to pull it and sure enough it was off...actually... both needed to be firmly pushed into place. She complained the jumpers were too short...so Tom or Jim...maybe take note if anybody else needs the SO for assistance please add another inch or so to the jumpers...you know that every inch counts...according to them...JK..

So far... so good...I listened to some tunes, one in particular came through in spades with the newer driver was "Shabada" by Mike Oldfield. I used this song when I had both subs and it sounded distinctly better with the SB13U at the time...today was like deja vu moment as my eyes were closed... the force and impact of that deep note startled me...lol. The SE unit handled it beautifully and with precision...in all honesty it resembled the ultra IIRC...it was really sweet and something I was hoping to accomplish with the switch.

At this time I only adjusted the sub gain using my RSM. I am still using the old subs EQ house curve. I will endeavor to re-run ARC later this week as I am still home on vacation which should help the overall SQ...I'll not yet go out on the limb and say the SE is superior but in a short time it definitely got my attention.
Reefdvr27's Avatar Reefdvr27
05:38 PM Liked: 641
post #12660 of 17364
07-05-2014 | Posts: 3,469
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Quote:
Originally Posted by Billy p View Post
I'll install the new driver at some point today...IIRC...Jim told me the new drivers are wired in parallel he also included an instruction pamphlet...pretty straight forward I'd say but I've been known to mess things up on occasion...when putting things back together...lol.
Nice. I cannot wait. I am going to have 4 of those puppies in my new mains in a few weeks
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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