List of Reference Level, High Sensitivity & SPL Speakers - Page 10 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #271 of 824 Old 03-24-2012, 02:37 AM
AVS Special Member
 
Veda's Avatar
 
Join Date: Apr 2008
Location: Asia
Posts: 2,189
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 15
The Axiom M50 seems like the best buy in the whole list for something that can still be used for pure music. I wonder how the new Sierra Tower does with it's much higher sensitivity...
Veda is offline  
Sponsored Links
Advertisement
 
post #272 of 824 Old 03-24-2012, 05:41 AM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by Veda View Post

The Axiom M50 seems like the best buy in the whole list for something that can still be used for pure music. I wonder how the new Sierra Tower does with it's much higher sensitivity...

Depends on your minimum threshold for output, and what amplification you're willing to use. (And of course what "musical" means )

But sorting by my price-weighted column, some budget stand outs in the $200-$500 bracket are the Mackie C200, Electrovoice ZX1, Klipsch RB-81, Chase Home Theater Pro10 and Sho10, eD cinema speakers, QSC K10, Axiom M50 and M22...

Strange that the Sierra bookshelf has an in-room sensitivity only .5 dB higher than anechoic? The Sierra tower reports 2.5 dB more sensitivity and 100 watts more power handling. Still not quite 105dB 12 feet anechoic, but I will add to the list. I would love to hear that ribbon version!
Eyleron is offline  
post #273 of 824 Old 03-25-2012, 07:40 AM
AVS Special Member
 
doublewing11's Avatar
 
Join Date: Feb 2010
Location: Timber Country!
Posts: 3,321
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
Liked: 191
Quote:
Originally Posted by Eyleron View Post

OK, let's stick with what Triad meant with their spec. Is it in-room, or anechoic?

After conversing with Triad here in Portland..............measurements are anechoic.

Seems fair to add 3 deebers back to each Triad product!
doublewing11 is offline  
post #274 of 824 Old 03-25-2012, 04:53 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by doublewing11 View Post

After conversing with Triad here in Portland..............measurements are anechoic.

Seems fair to add 3 deebers back to each Triad product!

Great, thanks for checking on that. Tell them to add qualifiers for the measurement, especially since it can only be good. Even more ideally, they could list both, as Paradigm does. Even most ideally, they could add a footnote on how they measured / calculated it, as JBL Pro does!
Eyleron is offline  
post #275 of 824 Old 03-25-2012, 05:08 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Ugh, Triad needs to get their website marketing together.

Triad InRoom Gold LCR:
On product web page: http://www.triadspeakers.com/products/irglcr.html#
  • Power Handling: Maximum power rating 250 watts
  • Impedence: 4 ohms
  • Sensitivity: 92 dB/1W/1m

On brochure: http://www.triadspeakers.com/product...e/irgldlcr.pdf
  • Power Handling: Maximum power rating 300 watts
  • Impedence: 4 ohms
  • Sensitivity: 92 dB/2.83v/1m

So, which is the correct power handling?
What does the power handling mean in terms of RMS, Program, or Peak power?
And is the sensitivity at 2.83v or 1w?!

For now, I'll assume sensitivity is anechoic, the power handling is program power (usually double RMS, and half peak) and is the lower of the two numbers, and the sensitivity is 2.83v, so I'll normalize down 3dB.

EDIT: There are similar sensitivity inconsistencies for the other LCR models between web page and brochure.
Eyleron is offline  
post #276 of 824 Old 03-25-2012, 11:07 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by BuGsArEtAsTy View Post

Would you be willing to put all your main explanatory text in the first post?

I made another update to the second post which is an Explanation of the Reference Level Speakers List.

I now include explanation of all the columns, and I added explanation of reference level and why it matters.
Eyleron is offline  
post #277 of 824 Old 03-26-2012, 08:36 AM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Eyleron,

Great thread and very informative for a neophyte like myself. Is there a formula that I can plug my specs into? I have Home Theater Directs Level 3 towers and am wondering if I am getting the best for my money. Here are the specs if you know how to figure its peak Ref Level output...

Max. Power Handling: 200 watts
Frequency Response: 30 Hz - 40 kHz
Impedance: 8 ohms
Sensitivity: 89dB

Also, would room treatments affect this in anyway? Sorry for the noobish questions and if I missed the answer. Spent 20 minutes reading this thread and it gets a little overwhelming.

Great Job btw!
ratm is offline  
post #278 of 824 Old 03-26-2012, 09:02 AM
AVS Special Member
 
Veda's Avatar
 
Join Date: Apr 2008
Location: Asia
Posts: 2,189
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 15
Quote:
Originally Posted by ratm View Post

Sensitivity: 89dB

Is this anechoic or inroom sensitivity? His table uses anechoic but most speaker companies usually publish the higher inroom value.
Veda is offline  
post #279 of 824 Old 03-26-2012, 09:05 AM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Quote:
Originally Posted by Veda View Post

Is this anechoic or inroom sensitivity? His table uses anechoic but most speaker companies usually publish the higher inroom value.

how would I know?
ratm is offline  
post #280 of 824 Old 03-26-2012, 09:26 AM
AVS Special Member
 
Veda's Avatar
 
Join Date: Apr 2008
Location: Asia
Posts: 2,189
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 15
Quote:
Originally Posted by ratm View Post

how would I know?

Assuming it's anechoic which is the best case:

Sensitivity: 89
Watts to Reach 105dB 12 ft: 533 watt (can your amp output that much at peaks?)
% Watts Peak: 133% (you want this at less than 100%)
Peak dB: 103.8

I'd upgrade to the following speakers that does reference peaks comfortably:
Tekton Lore $500 each (67watt only to reach 105dB!) 30-30kHz

But I could be wrong...
Veda is offline  
post #281 of 824 Old 03-26-2012, 11:29 AM
Advanced Member
 
Steve1981's Avatar
 
Join Date: Jul 2011
Location: Maryland
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 41
Nice list you've got going there Eyleron. I can appreciate the effort you've put into it.

Something else I'd throw out there is:
http://www.baudline.com/erik/bass/xmaxer.html

Just another factor in figuring out just how feasible reference level is. Obviously, satellites with a single 3" driver need not apply.
Steve1981 is offline  
post #282 of 824 Old 03-26-2012, 12:56 PM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Quote:
Originally Posted by Veda View Post

Assuming it's anechoic which is the best case:

Sensitivity: 89
Watts to Reach 105dB 12 ft: 533 watt (can your amp output that much at peaks?)
% Watts Peak: 133% (you want this at less than 100%)
Peak dB: 103.8

I'd upgrade to the following speakers that does reference peaks comfortably:
Tekton Lore $500 each (67watt only to reach 105dB!) 30-30kHz

But I could be wrong...

well that kinda sucks. I have an XPA3 so I know they are getting a solid 200. And here I thought I was getting a good value...
ratm is offline  
post #283 of 824 Old 03-26-2012, 01:38 PM
AVS Special Member
 
lovinthehd's Avatar
 
Join Date: Dec 2007
Location: OROR
Posts: 6,323
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 82 Post(s)
Liked: 723
Quote:
Originally Posted by Veda View Post

Assuming it's anechoic which is the best case:

Sensitivity: 89
Watts to Reach 105dB 12 ft: 533 watt (can your amp output that much at peaks?)
% Watts Peak: 133% (you want this at less than 100%)
Peak dB: 103.8

I'd upgrade to the following speakers that does reference peaks comfortably:
Tekton Lore $500 each (67watt only to reach 105dB!) 30-30kHz

But I could be wrong...

Tekton Lore on their website goes for $999 a pair but I added a pair to my shopping cart and voila $1099! Sure do look interesting, though.

lovinthehd is offline  
post #284 of 824 Old 03-26-2012, 06:32 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by ratm View Post

Great thread and very informative for a neophyte like myself. Is there a formula that I can plug my specs into? I have Home Theater Directs Level 3 towers and am wondering if I am getting the best for my money. Here are the specs if you know how to figure its peak Ref Level output...

Thanks! I personally use the peak spl calculator here: http://myhometheater.homestead.com/splcalculator.html, and it's probably the one most often referenced.

Play around with it using different sensitivities, distances, wattages, placements, and number of speakers, and you'll learn a lot!

Sure, let's take a look at your speakers, and I'll add them to the List!

Quote:
Originally Posted by ratm View Post

Also, would room treatments affect this in anyway? Sorry for the noobish questions and if I missed the answer. Spent 20 minutes reading this thread and it gets a little overwhelming.

It's a good question, and it probably was only mentioned in passing here and there in the thread, so I certainly don't begrudge you!

I consider the speaker placement where you're near boundaries to be the equivalent of in-room (where the level of sound is boosted in bass frequencies, and away from walls to be more equivalent of an anechoic environment. In reality, with a typical placement of being within four feet of one wall, and the fact that your room is NOT anechoic, you'll get higher SPL at your ears than what the calculator would suggest.

The sound you hear is a combination of the direct sound from the speakers, as well as the reflected sound from your room environment. Look around you at the room. Do you see JUST the light from light sources of sun and light bulbs and fire? Or do you also see light reflecting off of the surfaces? Of course, it's the latter, or you wouldn't be able to see objects. Sound behaves, give or take, similarly, where it reflects off the environment. We humans don't have the same facility as other creatures to equate the reflected sound to a mapped environment, the way we do with light, but it does affect our sense of space.

The reflected sound can be a major contributor to the sound power, depending on the nature of the room. A larger room will attenuate the sound more before it bounces off a distant wall and attenuates further back to your ear. A small room will reflect a higher percentage of sound to your ears versus the direct sound.

There are whole arts and sciences to adjusting the acoustics of the room to lower distortion and minimize detrimental reflections, while maximizing or improving beneficial ones.

Room treatments that absorb sound, like the common first reflection point panels, acoustic ceilings, your normal carpet and furnishings, and absorption behind speakers or on front wall all reduce the total sound power into the room. Room treatments that diffuse the sound break up planar waves of reflections into split up diffuse reflections of different directions and times, creating a sense of larger space and not interfering with the direct sound, while maintaining the energy of the sound power.

When I added just six panels to my room, I needed to raise the volume on the receiver several decibel (and then recalibrate with higher trims), and thus I pushed the system further against its meager limits. I need to send more watts from my amp, and the speaker is being tasked with handling more power.

So, to answer your question, a hard surface room with little absorption will sound bad, but it will mean your microphone would measure higher volume. A heavily treated room with absorption will force the system to work harder, but for multi-channel sound, it'll likely sound better, up until the point that you're beyond the amp and speaker's limits.

Most people say that reference level will sound worse in a non-treated room than in a well-treated one, other things being equal.

Also, although you didn't ask, sensitivity is often limited by the bass driver, especially in horn speakers like yours. Although with the addition of a 2" mid-range, that might be the bottleneck in this case?

Quote:
Originally Posted by Veda View Post

Is this anechoic or inroom sensitivity? His table uses anechoic but most speaker companies usually publish the higher inroom value.

One reason I use anechoic is that it can be more realistic for those treating their rooms' acoustics more generously. Another reason is that in-room might be interpreted by some people to be without treatment, and others near one wall, and others deep in a corner. I actually ran across one manufacturer that listed sensitivity with the speaker in a corner (and it wasn't a Klipschorn or Pi speaker!), and another that listed sensitivity with two speakers playing at once!

Quote:
Originally Posted by ratm View Post

how would I know?

Well, the general advice is that if the number is not qualified, then it's probably in-room, since the anechoic number looks "worse." I'm sure you've read about the games that can be played in receiver/amplifier output ratings and how the FTC added some restrictions on their marketing, and how you're supposed to look out for the frequency range, distortion level, and number of channels playing. Well, there are no such restrictions on speaker manufacturers. Many play pretty coy, as I ranted above.

However, Darkwing11 in an earlier post about Triad said that he heard that the Triad sales people say that their sensitivity, while not qualified as anechoic or in-room on the website, is calculated as anechoic. However, then I found many inconsistencies in their specs, and I'm waiting for clarification, and I'm assuming the worst for now.

Quote:
Originally Posted by Veda View Post

Assuming it's anechoic which is the best case:

Lots of ways to interpret this. It's the best case in that if it was instead "in-room," then the anechoic would be even lower.

Quote:
Originally Posted by Veda View Post

Sensitivity: 89
Watts to Reach 105dB 12 ft: 533 watt (can your amp output that much at peaks?)
% Watts Peak: 133% (you want this at less than 100%)
Peak dB: 103.8

Hard to know what the peak power handling of these of speakers is, since they don't list RMS / Program / Peak. If they mean that the most amplifier you should throw at them is a 200w RMS amp, then their peak handling might be 400w.

Quote:
Originally Posted by Veda View Post

I'd upgrade to the following speakers that does reference peaks comfortably:
Tekton Lore $500 each (67watt only to reach 105dB!) 30-30kHz

Of course this only matters with respect with the goal. Is it reference level? At how many feet seating distance?

Quote:
Originally Posted by ratm View Post

well that kinda sucks. I have an XPA3 so I know they are getting a solid 200. And here I thought I was getting a good value...

What does "value" mean? Since most speakers can't give you clean reference peaks, you may be judging the speakers too harshly.

Often speakers that have a low extension, like yours to 30Hz, don't do high output so well. There are tradeoffs. For home theater, I'd rather let the low bass be handled by subwoofers, where I can place them for smoothest response, and let the mid-to-upper bass etc be handled by the other speakers. We know low bass takes big boxes, big drivers, and hundreds if not thousands of watts.

Also, what subwoofers(s) do you have? If they can't output 115dB at your listening position, from at least 20Hz (lower if you're into infra-bass), then you're already down many dBs there anyway.
Eyleron is offline  
post #285 of 824 Old 03-27-2012, 02:11 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by Steve1981 View Post

Something else I'd throw out there is:
http://www.baudline.com/erik/bass/xmaxer.html

Just another factor in figuring out just how feasible reference level is. Obviously, satellites with a single 3" driver need not apply.

That's pretty cool, to show what you can expect to get for output. Thanks!
Eyleron is offline  
post #286 of 824 Old 03-27-2012, 02:16 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by Eyleron View Post

Ugh, Triad needs to get their website marketing together...

This was of some particular interest to me as I have some friends interested in their speakers.

Triad says they're going through a website re-do, and should launch shortly.

The PDFs are more trustworthy than the web page product data. However the power ratings are changed even from what's in the PDFs, due to some updated drivers. Sensitivity is anechoic.

Platinum
94.5dB 2.83v 1m
100-400w recommended amp (can handle > 1000w peaks)

Gold
92db 2.83v 1m
100-400w recommended amp

Silver
91 2.83v 1m
50-200w recommended amp
Eyleron is offline  
post #287 of 824 Old 03-27-2012, 02:30 PM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Quote:
Originally Posted by Eyleron View Post


Also, what subwoofers(s) do you have? If they can't output 115dB at your listening position, from at least 20Hz (lower if you're into infra-bass), then you're already down many dBs there anyway.

I just placed an order for an Empire that is going to be corner placed roughly 10 feet from my listening position.
ratm is offline  
post #288 of 824 Old 03-27-2012, 02:36 PM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Quote:
Originally Posted by Eyleron View Post


Sure, let's take a look at your speakers, and I'll add them to the List!

.

I used the formula in the link provided and got this...

ratm is offline  
post #289 of 824 Old 03-27-2012, 03:00 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 14,204
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked: 403
Quote:
Originally Posted by ratm View Post


I used the formula in the link provided and got this...

Use one speaker and it assumes you get perfect gain from walls.
MKtheater is offline  
post #290 of 824 Old 03-27-2012, 03:08 PM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
Quote:
Originally Posted by MKtheater View Post

Use one speaker and it assumes you get perfect gain from walls.

no idea what you mean
ratm is offline  
post #291 of 824 Old 03-27-2012, 03:54 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 14,204
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked: 403
When you plug a speaker in that spl calculator use one speaker, not 2 unless you plan on using stereo only.
MKtheater is offline  
post #292 of 824 Old 03-27-2012, 04:04 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by ratm View Post


I used the formula in the link provided and got this...

If you care about how loud the overall sound will be to your ears, you have to look at the program material, which channel(s) are playing at one time, etc. But that should only matter if you are assessing hearing damage for loud concert music playing.

If instead you want to assess the system's capability without regard to reference level, then you don't use more than one speaker. It's 105dB peaks per channel. So assess one channel at a time. I would actually assess the weakest link of the front three speakers.

If the sensitivity of the speaker was really in-room instead of anechoic (likely when they don't qualify it), then definitely use the away from walls. I always use away from walls, because boundary gain is for bass, but not 2,000 Hz.

Also if you've treated the room, you'll have less sound from reflections.

Last, and good news, is that your amp might offer another dB or three of dynamic headroom for brief peaks, ideally up to 200ms. This means the amp would be able to output 300 to 400w briefly. Depends on the amp, though. For instance, tightly regulated amps will have 0 headroom.
Eyleron is offline  
post #293 of 824 Old 03-27-2012, 04:21 PM - Thread Starter
AVS Special Member
 
Eyleron's Avatar
 
Join Date: Dec 2003
Location: Minot, ND
Posts: 1,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 34
Quote:
Originally Posted by ratm View Post


I just placed an order for an Empire that is going to be corner placed roughly 10 feet from my listening position.

Yeah it will still be a few dB down from reference level peaks, but I wouldn't sweat it.
Eyleron is offline  
post #294 of 824 Old 03-27-2012, 04:22 PM
AVS Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 32
I have an XPA3. So I guess the question (at least for me) is, if I rarely, if ever, listen at anywhere close to ref levels, why is this a big deal to me? (not flaming in any way, just trying to understand).
ratm is offline  
post #295 of 824 Old 03-27-2012, 04:46 PM
AVS Special Member
 
DreamCatcher's Avatar
 
Join Date: Aug 2001
Location: Reno, NV
Posts: 2,154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 11
Quote:
Originally Posted by ratm View Post

I have an XPA3. So I guess the question (at least for me) is, if I rarely, if ever, listen at anywhere close to ref levels, why is this a big deal to me? (not flaming in any way, just trying to understand).

Probably the wrong thread for you

StayThristyMyFriends
DreamCatcher is offline  
post #296 of 824 Old 03-27-2012, 06:21 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 14,204
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked: 403
Quote:
Originally Posted by DreamCatcher View Post


Probably the wrong thread for you

Exactly! I have said it 100 times listening at reference is an awesome thing when it is clean with no compression and there are not lots of speakers that sound good doing it in my room. If you listen at lower volumes there are literally 1000's of choices out there. Once you turn it up is where it separates the men from the boys and I mean sounding good not typical crappy PA stuff.
MKtheater is offline  
post #297 of 824 Old 03-27-2012, 06:22 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 14,204
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked: 403
Quote:
Originally Posted by DreamCatcher View Post


Probably the wrong thread for you

BTW dreamcatcher, do you still have the eD sub and submersive? Can you PM me with impressions?
MKtheater is offline  
post #298 of 824 Old 03-27-2012, 07:44 PM
AVS Special Member
 
Bill Fitzmaurice's Avatar
 
Join Date: Nov 2009
Location: New Hampshire
Posts: 9,276
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 1192
Quote:
Originally Posted by MKtheater View Post

Use one speaker and it assumes you get perfect gain from walls.

The assumption of gain from walls is a basic flaw in the calculator. If the baffle is 1/4 wavelength from a rear wall you get a cancellation null, not gain. If that distance is two feet the null is at 140 Hz. Four feet, 70Hz.

Bill Fitzmaurice Loudspeaker Design

The Laws of Physics aren't swayed by opinion.
Bill Fitzmaurice is offline  
post #299 of 824 Old 04-28-2012, 09:09 AM
AVS Special Member
 
cavu's Avatar
 
Join Date: Apr 2005
Location: CANADA
Posts: 6,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 13
Quote:
Originally Posted by cavu View Post

Be sure to include the following three models - the RWO/Fostex Laboratory Series!! They are perhaps the finest monitors ever offered. They were used by the JVC Cutting Centre for mastering high definition vinyl as well as many of the top studios.

Very highly sought after, they rarely come on the market as they are still in use and studio owners virtually would never give them up. Awesome specs!!

http://gray.mb.ca/fostex/RWO-FOSTEX%...20MONITORS.pdf

I just found this letter in our files. It might give you a better idea of the quality of these monitors ....


LL

"The greatest obstacle to discovery is not ignorance  it is the illusion of knowledge." - Daniel Boorstin
"Our lives begin to end the day we become silent about things that matter.
" - MLK

cavu is offline  
post #300 of 824 Old 04-28-2012, 11:52 AM
AVS Special Member
 
psgcdn's Avatar
 
Join Date: Sep 2006
Location: Prov. of Quebec, Canada
Posts: 4,427
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Liked: 190
Quote:
Originally Posted by Veda View Post

The Axiom M50 seems like the best buy in the whole list for something that can still be used for pure music.

How do you come to that conclusion?

psgcdn is offline  
Reply Speakers

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off