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#403232 - 04/17/14 02:15 PM Re: Official v4 Subwoofer Thread [Re: Ian]
Happy Birthday tomtuttle Offline
axiomite

Registered: 06/20/03
Posts: 8278
Loc: Tacoma
Originally Posted By: Ian
It is one of those things that falls in-between all the specs but matters in the real world.


THIS is part of the reason why I love you, Ian.

And also part of the reason why some people periodically want to burn you at the stake.

laugh
_________________________
bibere usque ad hilaritatem

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#403233 - 04/17/14 02:22 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7041
Loc: Canada
Originally Posted By: Andrew
[quote=fredk]
The revisions centre around lowering tuning frequencies to take advantage of the larger cabinets (EP125/175) and the improved parameters of the new woofers. To give you an idea of the changes, I have attached the natural frequency response (no EQ) of the EP125v3 (in blue) and the EP125v4 (in green). There is an improvement of 5dB between 25Hz and 40Hz with the new alignment, meaning less EQ is necessary, resulting in much greater low frequency headroom.

Excellent Andrew. That's what I was looking for. Axiom's subs have been a weak spot in a lineup of exceptional value speakers.

If you have managed a similar change in response with a smaller footprint for the EP350 you will have a real winner on your hands.
_________________________
Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#403243 - 04/17/14 04:28 PM Re: Official v4 Subwoofer Thread [Re: CatBrat]
Andrew Offline
Axiom Engineer
veteran

Registered: 12/18/01
Posts: 171
Originally Posted By: CatBrat
I'm assuming the freq graph for the EP500 is only an estimate and not an actual measurement. It looks too even.


Nope, it is absolutely a real measurement. The reason it looks so smooth is that it was measured as a near-field response inside the anechoic chamber. Because the EP500v4 is a sealed sub, the near-field response is equivalent to the 4pi response once the SPL is corrected for 1M and the radiating area of the driver is taken into account. Just for fun these curves were compared to the original pole measurements for the v4 subs and they correlate perfectly. The new DSP algorithm for response correction also helps! smile

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#403244 - 04/17/14 04:35 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
CatBrat Offline
axiomite

Registered: 08/05/09
Posts: 5819
Loc: Some random location
Thanks Andrew. I was hoping that to be the case, but assumed it wasn't. I also noticed the price increase is to be on April 23, as you had mentioned. I was going to order on May 16, but will order tomorrow instead to take advantage of the lower price. I hope this will be worth moving my bill paying around in order to take advantage of missing the price increase.

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#403248 - 04/17/14 05:18 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
Happy Birthday Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6607
Loc: It's all about the location.
Andrew, did you/Ian consider any opposed driver designs? not sure if I recall it was on the table or not about a year or so ago.
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#403252 - 04/17/14 06:00 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
CatBrat Offline
axiomite

Registered: 08/05/09
Posts: 5819
Loc: Some random location
Ordered the EP500 v4 using the Trade-Up program. I almost forgot about that. Saved me a lot of money. Thanks Brent.

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#403267 - 04/18/14 02:07 AM Re: Official v4 Subwoofer Thread [Re: Adrian]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11166
Loc: Richland, WA, USA
Originally Posted By: Adrian
Andrew, did you/Ian consider any opposed driver designs? not sure if I recall it was on the table or not about a year or so ago.


I was hoping for an in-wall LFR subwoofer announcement.

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#403324 - 04/19/14 11:55 AM Re: Official v4 Subwoofer Thread [Re: Andrew]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 3885
Loc: Up yonder
Awwwww.....crap! I was quite intent on keeping my V2 and V3 stuff.

So how do the V4 500's compare to the V2's, performance wise? I have two EP500's in my room. What would a reasonable expectation be if I were to upgrade to the V4's, with respect to sound quality? My room is 12X18X9. M60s and a VP160 with three sets of QS-8's.
_________________________


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#403329 - 04/19/14 12:40 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
JBG Offline
devotee

Registered: 06/14/02
Posts: 405
I have a ep500 v4 on layaway.. getting my new inverted vp 180hp v4 Tuesday to replace the vp 180 v3 ... feels like xmas!!!

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#403398 - 04/21/14 12:45 PM Re: Official v4 Subwoofer Thread [Re: Andrew]
CatBrat Offline
axiomite

Registered: 08/05/09
Posts: 5819
Loc: Some random location
My order for EP500 v4 just went through this morning. Vermont Maple with Burnt Sienna grill. 10 days and counting.

This is an upgrade from an EP350 V3, Cinnamon Beach with black grill. I purchased 4 years ago. Good price through the Trade Up program.

I come real close to ordering an SVS-PC12 Plus instead. But the Trade Up program sealed the deal for Axiom.

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