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Re: LFR-1100's and assorted tests to be done
craigsub #415756 12/02/15 02:38 AM
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How did you get such a smooth response with no peaks or nulls? Are you applying any EQ?


Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: LFR-1100's and assorted tests to be done
fredk #415757 12/02/15 02:47 AM
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Fred - All the response curves are in room, with Audyssey XT-32 applied. Part of this test is to show how well Audyssey handles the in room response of subwoofers.

A sweep on the LFR-1100's in 2.0 ... this will take some time, but I have some ideas on this. smile

Re: LFR-1100's and assorted tests to be done
craigsub #415763 12/02/15 12:49 PM
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Guys ... Here is the in room curve on the SVS PC-2000:



and the Klipsch R-115-SW:



Again, one can see the effect on the in room response with Audyssey applied.

Also ... the 3 dB down points for each sub are:

Klipsch: 16 Hz
SVS: 17 Hz
Axiom: 20 Hz

All are rounded to nearest single tone.

Re: LFR-1100's and assorted tests to be done
craigsub #415766 12/02/15 02:12 PM
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Can we see a plot of the 350 without audyssey. I'm curious how much more extension it gets. (My place needs eq yet and wondering...)

Re: LFR-1100's and assorted tests to be done
craigsub #415768 12/02/15 03:16 PM
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Originally Posted By craigsub
Guys - Being the Axiom forum, it occurred to me that you might like to see the response curve in our 4800 cubic foot theater room with an EP-350:

Adrian - We did get the 2nd Klipsch. We had company for Thanksgiving, so I added it to the first sub for a couple of movies. My only "down side" with the Klipsch is they are a bit boomy in upper bass, but they sure do hit hard.

And if i recall that is the newer EP350 (v4) correct? (i'm sure that was mentioned somewhere in this thread)

I have an older EP350 (pre v2 days).
We paired it against a SVS PCi 16-46 sub many years ago in our best attempt at a blind test. Those interested in seeing that aging review (and a picture if you scroll to the last post) can find it at this thread:
https://www.axiomaudio.com/boards/ubbthreads.php/topics/58775/SVS_PCi_16-46_and_the_Axiom_EP

I would have loved to see the curve on the older EP350 vs. newer in-room.

Great stuff Craig.
Keep it coming.

Last edited by chesseroo; 12/02/15 03:17 PM.

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Re: LFR-1100's and assorted tests to be done
chesseroo #415774 12/02/15 04:45 PM
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Serenity - I recommend looking at both the SVS site and Axiom's site for response curves as measured by both SVS and Axiom in anechoic settings, then compare them to our in room curves using Audyssey. Based on the results here, it is clear that Axiom does not put much EQ into the EP-350. Most ported subs (both the Klipsch and SVS are examples of this) have a fair amount of eq built into the amp.

I am trying to keep the conversation to what can be achieved for the normal subwoofer buyer without making it too complicated, which is why I am limiting this to one curve, at the listening position, with each sub, using only Audyssey.

Later, we will be doing some tests with an Antimode.

Chess - yes, it is the V.4 sub. It's a solid little beast, too. Your comparison on the 16-46 was a fun read. I had a pair of 16-46 Plus in our basement theater 13 years ago, and they definitely went DEEP.

Re: LFR-1100's and assorted tests to be done
craigsub #415776 12/02/15 04:53 PM
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It was your previous comment that reminded me of the comparison we did years back as the general impressions between the EP350 and SVS were similar even though you have more current versions.

Originally Posted By craigsub
The EP-350 arrived safely today. It's calibrated and delivering bass. So far, it is a pleasant surprise - it was room shaking on both Tron: Legacy and Star Trek 2009. It's not quite as deep as the SVS, while early listening seems to point to better articulation.


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Re: LFR-1100's and assorted tests to be done
craigsub #416002 12/20/15 09:24 PM
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Craig:

Following your subs & speaker threads over at The HT forum, you have reinforced my findings of a few years ago when I was auditioning many different brands & models of speakers & subs.

Basically I found that virtually every product was competent in its own right with subtle differences that gave them their own sound signature or character. There were no real bad units nor any that stood out dramatically better from the rest. I could have lived with any of them. I believe that with modern equipment, designers & builders are generally putting out really good stuff at a reasonable price.

I know that this flies in the face of many out there that will participate in needless juvenile knock-down drag-em-out fights on some forums over components that essentially are 'similarly good'. I don't get it.

Thanks for bringing some sanity & a pragmatic voice to this interesting pastime. Hopefully, some of these vocal experts out there will find your credible stuff & digest it.

To you & yours, have a wonderful Christmas Season. It looks like a 'green' one out here but the local mountains are covered in the 'white stuff' - unlike last year...

TAM

Re: LFR-1100's and assorted tests to be done
exlabdriver #416004 12/20/15 10:36 PM
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Chesseroo and Tam - as you both are what one would consider to be mature, rational enthusiasts, I appreciate your comments.

If you will allow a personal story ... When I had Chase Home Theater, we used the longest throw 18 inch driver that Eminence makes. It's about a 19 mm X-max driver. Our first version was with an 80 ounce magnet. The second was with a 160 ounce magnet "double stack"

Now Eminence makes it with a 215 ounce "triple stack" magnet.

It still has the same X-max. Our first version managed about 102.7 dB at 20 Hz/2 meters in max long term output. Our second version still did the same 102.7 dB.

The new version will STILL do 102.7 dB.

According to the wizards on that "other forum", the driver we used was a weak driver with no performance.

Now that JTR and Powersound are using the same driver, it's a world beater.

It's this type of nonsense that I have personally experienced for years, and why I refuse to lower myself to that sort of behavior.

I love this hobby, and think EVERY company deserves honest reviews of products. The only thing worse than "fan bois" are the opposite (and Chase Home Theater had a lot of those opposites) types: Those who make it an on line career to slam one company's products.

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