Official Power Sound Audio Subwoofer Thread - Page 595 - AVS | Home Theater Discussions And Reviews
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post #17821 of 18538 Old 03-19-2015, 07:58 AM
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Quote:
Originally Posted by Brian Fineberg View Post
those extension graphs are IMPRESSIVE!!

Well, we've been working with various ICE modules for over a year now so we have had time to learn their strengths and weaknesses. Maximize the former and minimize the latter. And working hand in hand with Brian from Speaker Power on the custom DSP frontend for 6(?) months now has given us plenty of invaluable experience as well. The only problem I see moving forward is Brian may have a hard time keeping up with our demand..

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post #17822 of 18538 Old 03-19-2015, 07:58 AM
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did not realize such a big roll off on the xv. The v1500 looks so much better low end wise which will make a huge difference. Well worth the $150 more price tag on that alone plus better amp, IMO.
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post #17823 of 18538 Old 03-19-2015, 08:08 AM
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Originally Posted by tvuong View Post
did not realize such a big roll off on the xv. The v1500 looks so much better low end wise which will make a huge difference. Well worth the $150 more price tag on that alone plus better amp, IMO.
Yep

-3db @ 21hz vs -3db @ 16hz. It is all DSP shaping though. The XV is actually 18hz vs V15 16hz tune. You can use a mini dsp to bring up the low end a bit at. Bear had his dual XV15se flat to 16hz @ 108db with no compression.
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post #17824 of 18538 Old 03-19-2015, 08:13 AM
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^^ about -5db from 30 to 20hz I see from that graph.
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post #17825 of 18538 Old 03-19-2015, 10:22 AM
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Dang!…. That V1500 looks like it has some great extension.
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post #17826 of 18538 Old 03-19-2015, 11:29 AM
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Just got my shipping email for my V1500s!
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post #17827 of 18538 Old 03-19-2015, 11:33 AM
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Woohoo mine has shipped!
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post #17828 of 18538 Old 03-19-2015, 12:07 PM
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Quote:
Originally Posted by tvuong View Post
^^ about -5db from 30 to 20hz I see from that graph.
The XV15se is +/-3db from 21-200hz. It rolls off hard below 18hz. The roll off starting around 30hz is dsp shaped as a happy medium for most rooms transfer function. The V1500 has a romm control feature to reduce the low end response in rooms with excessive gain. Like I previously said the XV15se can be boosted in the 18-30hz by audyssey or some external eq if need be. One needs to understand the whole picture before stating that there will be a night and day difference between both subs. In some rooms yes it could be night and day in others not so much.
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post #17829 of 18538 Old 03-19-2015, 12:18 PM
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Originally Posted by satfam View Post
Just got my shipping email for my V1500s!
Yes it does and it makes me mad...

Every time I'm content with my gear, Tom and Jim throw a monkey wrench into the works by introducing new subs... C'est la vie.

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post #17830 of 18538 Old 03-19-2015, 12:20 PM
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Originally Posted by climber07 View Post
Yes it does and it makes me mad...

Every time I'm content with my gear, Tom and Jim throw a monkey wrench into the works by introducing new subs... C'est la vie.
Just shut your internet off.
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post #17831 of 18538 Old 03-19-2015, 01:18 PM
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Originally Posted by mnc View Post
Woohoo mine has shipped!

This is about 1/3rd of what we hope to ship by end of day today(7-8pm)

By end of day tomorrow we should be almost all caught up with S1500 and V1500 orders.

Tom V.
Power Sound Audio
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post #17832 of 18538 Old 03-19-2015, 02:08 PM
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Quote:
Originally Posted by basshead81 View Post
The XV15se is +/-3db from 21-200hz. It rolls off hard below 18hz. The roll off starting around 30hz is dsp shaped as a happy medium for most rooms transfer function. The V1500 has a romm control feature to reduce the low end response in rooms with excessive gain. Like I previously said the XV15se can be boosted in the 18-30hz by audyssey or some external eq if need be. One needs to understand the whole picture before stating that there will be a night and day difference between both subs. In some rooms yes it could be night and day in others not so much.
All I was saying is based on the graph posted by the manufacture, the xv15 drops 5db from 30hz to 20hz, is that not true? Per the graph, it looks more to be +-3db from about 25hz and up. I know it can be boosted but you also can say the same thing with the V1500. Bear boosted his XV pair and apparently it is not enough for him to keep them.
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post #17833 of 18538 Old 03-19-2015, 04:54 PM
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a 102-lb beast is coming next Wednesday for me!!!
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post #17834 of 18538 Old 03-19-2015, 05:29 PM
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Quote:
Originally Posted by Tom Vodhanel View Post
Here is the V1500 versus XV15se frequency response.

Tom V.
Power Sound Audio
Is this with the room size all the way to large? I wonder how that control works. For instance, can you adjust it for steeper roll off so that it increases headroom say above 30Hz for music listening?

Can't wait to read the manual and more importantly listen to this beast!

NHT speakers, Denon 4520, Panasonic 65VT50, PSA XS30SE
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post #17835 of 18538 Old 03-19-2015, 05:39 PM
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Originally Posted by mnc View Post
Woohoo mine has shipped!
You've been looking at a sub for a long time now. I'm glad it's finally making it's way to your home. Enjoy it and let us know what you think.
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post #17836 of 18538 Old 03-19-2015, 05:47 PM
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Quote:
Originally Posted by Tom Vodhanel View Post
Here is the V1500 versus XV15se frequency response.

Tom V.
Power Sound Audio
Very nice. I'm upgrading from an original XV15 so maybe even a little bit more output improvement than the se models.

Got my fedex confirmation that they'll be here next Tues (not bad for CA destination). Upgraded main L/R last weekend... pretty stoked!
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post #17837 of 18538 Old 03-19-2015, 06:06 PM
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Originally Posted by Hopinater View Post
You've been looking at a sub for a long time now. I'm glad it's finally making it's way to your home. Enjoy it and let us know what you think.
Thanks Hop! Yeah it's been a long time coming. I don't have a lot of money to spend on this stuff so I tend to keep stuff a LONG time.

Monday is looking like a great day! Actually works out for me since I'm off work!
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post #17838 of 18538 Old 03-19-2015, 06:21 PM
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Originally Posted by mnc View Post
Is this with the room size all the way to large? I wonder how that control works. For instance, can you adjust it for steeper roll off so that it increases headroom say above 30Hz for music listening?

Can't wait to read the manual and more importantly listen to this beast!
Here is a snippet, I'm a hacker of SpeakerPower amps.

ROOM SIZE SETTING
The ROOM SIZE control is an adjustable bass shelf attenuation filter.
The large setting will provide zero attenuation to the native frequency
response of the subwoofer. The small setting will provide the maximum
amount of available attenuation. This control is typically set to the user’s
preference for deep bass and their room environment. In many scenarios
the more the control is oriented to SMALL the “tighter” the bass
may sound. Please experiment with this control as time allows as every
room is a little different. Please contact us if you need help adjusting the
ROOM SIZE control

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post #17839 of 18538 Old 03-19-2015, 06:40 PM
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Originally Posted by ahblaza View Post
Here is a snippet, I'm a hacker of SpeakerPower amps.

ROOM SIZE SETTING
The ROOM SIZE control is an adjustable bass shelf attenuation filter.
The large setting will provide zero attenuation to the native frequency
response of the subwoofer. The small setting will provide the maximum
amount of available attenuation. This control is typically set to the user’s
preference for deep bass and their room environment. In many scenarios
the more the control is oriented to SMALL the “tighter” the bass
may sound. Please experiment with this control as time allows as every
room is a little different. Please contact us if you need help adjusting the
ROOM SIZE control


Jeff isn't the room size control knob just a EQ boost? which allows you to cut or boost depending on the room?
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post #17840 of 18538 Old 03-19-2015, 07:02 PM - Thread Starter
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The room compensation control should be cut only. In that the large setting (set to large or max) doesn't change or cut the bass roll off.

ShaunH
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post #17841 of 18538 Old 03-19-2015, 07:13 PM
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Quote:
Originally Posted by jbrown15 View Post
Jeff isn't the room size control knob just a EQ boost? which allows you to cut or boost depending on the room?
Joe, I think it's a little more than just an EQ boost, I won't comment on that as I don't know all the facts and do not want to mislead anyone, from that snippet I would think it's more of an attenuator than a boost. I'm sure Tom or Jim will clarify or wait till someone has one of the ICE amp subs. I'll leave it to that. I'm sure a lot went into the configuration of these DSP Amp functions before and after they were put into the different PSA sub cabinets. I would imagine it's not a set one code that fits all of the new models of PSA subs. Like Tom said they have been working with SpeakerPower for a very long time and could only imagine the man hours it takes to configure these DSP functions and get the subs sounding their very best.
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post #17842 of 18538 Old 03-19-2015, 07:46 PM
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Originally Posted by tvuong View Post
did not realize such a big roll off on the xv. The v1500 looks so much better low end wise which will make a huge difference. Well worth the $150 more price tag on that alone plus better amp, IMO.
I didn't realize it was that big either, kinda crazy. Looks like the v1500 gains a ton at 20hz even. I was under the impression it was mostly around 12-16hz the v1500 separated itself. Interesting.
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post #17843 of 18538 Old 03-19-2015, 08:02 PM
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Originally Posted by FattyMcButterPants View Post
I didn't realize it was that big either, kinda crazy. Looks like the v1500 gains a ton at 20hz even. I was under the impression it was mostly around 12-16hz the v1500 separated itself. Interesting.
Base response is not an indicator of max output. The XV15se hits 107db @ 20hz max burst...the V1500 is about the same. Below 18hz is where the V1500 pulls away and has another 1db in the upper bass per Tom V.
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Originally Posted by basshead81 View Post
Base response is not an indicator of max output. The XV15se hits 107db @ 20hz max burst...the V1500 is about the same. Below 18hz is where the V1500 pulls away and has another 1db in the upper bass per Tom V.
So is the difference in the graph Tom just posted more related to the dsp differences then? Just trying to understand exactly what I am supposed to take from this particular graph, it really makes the v1500 look leagues better than the xv15se.

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post #17845 of 18538 Old 03-19-2015, 09:36 PM
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With the arrival of my V1500 just a few days away, I decided to open up my comparison thread.

PSA V1500 vs. S3000i: My Big Room Challenge

I started listing out my demo material and information about my room and preferences. Looking forward to seeing some of you over there; I'll keep posts about my own tests of these two over in that thread and keep this one on-topic for general PSA conversation.
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post #17846 of 18538 Old 03-20-2015, 12:29 AM
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Very nice. I'm upgrading from an original XV15 so maybe even a little bit more output improvement than the se models.

Got my fedex confirmation that they'll be here next Tues (not bad for CA destination). Upgraded main L/R last weekend... pretty stoked!
Hei.. I'm in CA (socal) too... How come you get yours 1 day earlier!! Unfair treatment!!
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Originally Posted by nalthien View Post
With the arrival of my V1500 just a few days away, I decided to open up my comparison thread.

PSA V1500 vs. S3000i: My Big Room Challenge

I started listing out my demo material and information about my room and preferences. Looking forward to seeing some of you over there; I'll keep posts about my own tests of these two over in that thread and keep this one on-topic for general PSA conversation.

Look forward to hearing your thoughts on both
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post #17848 of 18538 Old 03-20-2015, 06:24 AM
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Originally Posted by FattyMcButterPants View Post
So is the difference in the graph Tom just posted more related to the dsp differences then? Just trying to understand exactly what I am supposed to take from this particular graph, it really makes the v1500 look leagues better than the xv15se.
Yes pretty much...Part of what I was trying to say to Tvoung. Base response, the V1500 is much flatter, but as the sub starts closing in on it's limits the response will change. The low end will pull down as it does on any sub except SVS because they simply just limit output across the entire bandwidth to maintain a flat response.

Again do not use base response as a end all be all to a subs overall performance. The V1500 is still going to extend deeper because it has a shallower roll off like the original XV15, is deeper tuned, and has more enclosure volume. That still does not mean the XV15se is a slouch. 107db @ 20hz is right in the ball park with the FV15HP and VTF-15.2, but it can not keep up with them in the 12-16hz, where the V1500 will.
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Hei.. I'm in CA (socal) too... How come you get yours 1 day earlier!! Unfair treatment!!
I had an item sent FedEx from a company 30 miles south of my house. They shipped it 100 miles north, then to another sort facility 50 miles north. Then finally to my house. I have a FedEx facility 5 miles from me... Sometimes our packages go the scenic route...

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post #17850 of 18538 Old 03-20-2015, 07:53 AM
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Originally Posted by ahblaza View Post
Joe, I think it's a little more than just an EQ boost, I won't comment on that as I don't know all the facts and do not want to mislead anyone, from that snippet I would think it's more of an attenuator than a boost. I'm sure Tom or Jim will clarify or wait till someone has one of the ICE amp subs. I'll leave it to that. I'm sure a lot went into the configuration of these DSP Amp functions before and after they were put into the different PSA sub cabinets. I would imagine it's not a set one code that fits all of the new models of PSA subs. Like Tom said they have been working with SpeakerPower for a very long time and could only imagine the man hours it takes to configure these DSP functions and get the subs sounding their very best.
Hi Jeff,

Well, the room size control is either...

1)All DSP based with custom coding specific to our requirements. The amount of control we have includes but isn't limited to...number of bands, frequency, filter width, gain, slopes, high shelf , low shelf, and I'm sure I'm forgetting a few things.

OR

2)We *just* duct taped one of these to the back of our amplifiers...

Tom V.
Power Sound Audio
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