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MidnightSensi2

Audioholic Chief
I went to my local 'high end' audio store Saturday. When you walk in you're greeted by two B&W 802D's a Samsung 55" plasma and 3 McIntosh components. I'm checking these things out and the salesman says "You can have this system $35,000.00" I look up, smile and say "Wow". "But, what's causing that hiss through the tweeter?". He said there's no hiss. It's the fan on the amp. You guys know from reading my posts that I'm not the very knowledgeable about this stuff, but there was a hiss, a very audible hiss coming through the tweeter. They were using balanced connectors. So I asked about the advantages/disadvantages of balanced inputs. He said there was no difference.

I ended up listening to a pair of Paradigm S8's. I thought they sounded pretty good. They were being run through some Mark Levinson amps, with a Mark Knopfler cd being played. The S8's were nice, but kind of boring.
The 802D's are fairly sensitive for dome tweeters, at 90dB/W. That will make it a little more susceptible to hiss, but it's likely not a speaker problem but rather a source downstream. The amp may be balanced, but if the output stage has some noise it won't stop it from sending that noise through the speaker cables. Comes down to generally how noisey the gear is, when you run it through fairly sensitive speakers, gear that has some noise will stand out more.

That said, the fact that they have demo units out there hissing means they are kind of negligent sales people.

I have hiss on my tweeters if I put my ear up to them, but at 98/dB sensitivity and 2,000 watt amplifiers that's not too bad. I do run a fully balanced system though (From pre-amp to DSP to amplifiers).

The advantage of balanced connections and units is simply noise rejection. The salesman actually wasn't really wrong in saying that in most home applications it doesn't make much of a difference. Where it does make a big difference is on a stage or club where noise is often induced from things like microphone cables laying across signal lines or DJ effects boxes crossing signal wire, ground loops from people connecting to multiple power circuits with different potentials, etc.

I run balanced because my speakers are very sensitive, I like professional amps, and the cost of entry isn't that big. My home theater has two 30A service due to the amount of power run through it, so although they are tapped right next to eachother thats another possible place noise could have been induced.
 
AcuDefTechGuy

AcuDefTechGuy

Audioholic Jedi
One of the most important things is to add room treatments to improve room acoustics.
I don't see any accoustic panels in Siegfried Linkwitz's room.:eek:

I suppose it's because his wife would kill him?:eek::D

But really, I've tried Auralex acoustic panels along the front and back and side walls, and I can't tell any difference. Some guys feel the same.

What are they suppose to improve?

Midrange clarity? Bass boominess? Muddy sound? Most great speakers with flat on-axis and smooth off-axis don't usually have boominess or muddy midrange sound in most normal living rooms anyway, right?
 
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Lordhumungus

Audioholic
ADTG, are you doing the All Black's Haka in the shower or what?

Edit: I'm also going to attempt to stick my neck out and say that you are both correct in some ways. It seems to me that the place people should start is with whatever is going to best suit their needs. Something I've come to learn from reading up on audio is that this hobby tends to be one of the most unrealistic in terms of what the average Joe, or even enthusiast, is actually capable of doing in real world terms (due to budget, space, time, WAF constraints etc.) In short, I think the answer is really that there is no one answer, but rather that the situation needs to be intelligently assessed before going in ANY one direction.
 
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Nuance AH

Audioholic General
What..... :eek: if ..........the ......song........ :eek: ..........involves manly shouts and such?:eek:
Hmm...dunno about that one. I'll hand onto your mancard for now.:)
I don't see any accoustic panels in Siegfried Linkwitz's room.:eek:

I suppose it's because his wife would kill him?:eek::D

But really, I've tried Auralex acoustic panels along the front and back and side walls, and I can't tell any difference. Some guys feel the same.

What are they suppose to improve?

Midrange clarity? Bass boominess? Muddy sound? Most great speakers with flat on-axis and smooth off-axis don't usually have boominess or muddy midrange sound in most normal living rooms anyway, right?
Read Harman's white papers from the link in my thread, Olive's blogs from the link in my thread and then Toole's book. I noticed you thanked DS-21 every time he posted on the subject, so I assume you agree with him, even though he's dead wrong. The measured effects of room treatments cannot be argued with. RT times reduce, decay reduces, bass nulls and peaks can be smoothed. In short, you're not changing the speakers, you're changing the affect the room has on them. Read, read and then read Toole's studies and books. He's the guru on the subject and has put more time into this than anyone.

You cannot just plop the panels wherever, for what it's worth. As always, it depends on the room, but the objective results cannot be argued with, and the subjective results correlate with the measurements.
 
AcuDefTechGuy

AcuDefTechGuy

Audioholic Jedi
ADTG, are you doing the All Black's Haka in the shower or what?
Yeah. That's it. Exactly.:D

All I can say is, we're not robots, and life isn't black and white.

I suppose it is about what we're willing to do. It is a hobby, not a job or career for most of us.

But I don't think room treatments or room EQ helps me at all. And I'm not Willing to spend any more money when the sound is already crystal clear. I can live with that.
 
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Nuance AH

Audioholic General
But I don't think room treatments or room EQ helps me at all. And I'm not Willing to spend any more money when the sound is already crystal clear. I can live with that.
Prove it!:D Have you measured your room? If so, post the FR response and waterfall plots. We all know how you feel about putting up room treatments in your home, which I imagine is a very nice decor. I'm going call you out on this one and say:

R.........I.........G........H........T......! :D

If you don't want to put up treatments - cool. But I doubt they make zero difference. You're a little biased on that one, but do what you gotta do.
 
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Lordhumungus

Audioholic
ADTG didn't say room treatments don't make a difference, he said they don't help him. If he can't hear a difference before or after, he is correct that they don't help him regardless of what any chart, graph, or person otherwise says.

This is a huge hurdle for me personally because I have some amount of hearing damage due to numerous ear problems when I was younger. If I can't hear a difference, I won't spend money on something, regardless of what someone else can hear.
 
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Nuance AH

Audioholic General
ADTG didn't say room treatments don't make a difference, he said they don't help him. If he can't hear a difference before or after, he is correct that they don't help him regardless of what any chart, graph, or person otherwise says.

This is a huge hurdle for me personally because I have some amount of hearing damage due to numerous ear problems when I was younger. If I can't hear a difference, I won't spend money on something, regardless of what someone else can hear.
I agree with this, though that wasn't what I mean. I was alluding to something, but it was subtle so...:) Anyway, I've said what I wanted to say. You and I agree more than you know.
 
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Lordhumungus

Audioholic
I agree with this, though that wasn't what I mean. I was alluding to something, but it was subtle so...:) Anyway, I've said what I wanted to say. You and I agree more than you know.

I couldn't help but think of the first ~25 seconds or so of this :D
 
zieglj01

zieglj01

Audioholic Spartan
This is how it works for me - it is cheaper to treat a room, than it
is to build a new one. Also, I do not like to paint that much.:rolleyes::)
 
D

DS-21

Full Audioholic
You're right, and there is a reason he doesn't. ;) Many of the speakers available to the public aren't narrow directivity speakers.
Even assuming what you right is true - and it is, of course, because "many" only means "more than one;" same thing as "some" except it flags the author's opinion in the opposite direct - that's a marketing reason, not a real reason.

They might not be one Dr. Toole's radar screen as obvious competitors to Harman's home speaker lines (though it is worth noting that their reference room uses LSR 6332's, and not big Revels) for reasons that have nothing to do with sound quality, whereas something colored-sounding but in the same market (say, a Martin-Logan or B&W) would be.

Lastly many of the speakers "available to the public" are unmitigated crap, so how is that relevant to anything?

The bolded part is incorrect***You're [sic] own quote implies otherwise and leaves only you to blame for such poor wording. .
It was not poorly worded. It was, as my posts generally are, exactingly worded. I negotiate fine distinctions in written text, and interpret fine distinctions in written provisions of private and agency documents, for a living. And I do quite well at it. So perhaps I have an excessive appetite for the pedantic, but my words are carefully chosen to accurately convey my my position.

What was poor (and arguably intellectually dishonest) was your mischaracterization of my statement as "flawed speakers."

Also intellectually dishonest is your later assertion that my phrase "pick speakers that are designed to perform well under those conditions" is inconsistent with your formulation that

You're suppose [sic] to pick a speaker that objectively measures good [sic] and subjectively sounds good.
Anyone capable of reasonably interpreting written English will understand that my formulation, "performs well" implies high levels of both objective and subjective performance.

If your point is to deny that the performance of loudspeakers can be intentionally tailored to perform optimally in a given set of conditions by controlling the directivity, bass loading, etc, then…wow.

Just wow.

Do you have a good sharpener at home? If not, I recommend you find someone offering a sharpening service, because you're going to need a lot of honing to get anywhere near the cutting edge.

Your logic only applies to [narrow directivity speakers], and even then isn't full proof. There are too many dependents.
Sigh. There's only so much blatant, blinkered, ignorant misinterpretation of one's words that can be tolerated.

For reference, here is the text I actually put in front of you, with emphasis added.

"A good speaker with a pattern in the midrange and treble appropriate to the room (narrower for rooms with features such as glass walls, large furniture along the sides, etc, wider for more absorptive room) doesn't need "acoustic panels" and such. The only effect they are likely to have, in fact, is to reduce spaciousness."

Now, given that I obviously to any observant reader mentioned situations where narrow-directivity speakers may perform better, and situations where wider-directivity speakers may perform better, how can you claim with a straight face that what I've written "only applies to those," with the antecedent of "those" being "narrow-directivity speakers"?

As I mentioned, there are too many variables so your logic is flawed.
Your statement is conclusory to the point of irrelevant.

It is inadequate to conclusorily assert that my logic is flawed. You've not pointed out any flaws, except in your ability to read and interpret plain English in a reasonable manner.

Room treatments are objectively proven to help in the majority of rooms,
If we narrow that statement to rooms containing incompetently-designed loudspeakers (i.e. the vast majority of loudspeakers offered by "high end audio" venders), I agree that turning one's room into a padded cell may make things better.

But if we're including competently-designed loudspeakers…I'd recommend you go listen to some. One can reasonably infer from your posts that you have not actually done much of that.

while what you're recommending is based on subjectivity, chance and circumstance.
So, the works of people with multiple JAES papers under their belt such as Dr. Earl Geddes are "subjectivity, chance, and circumstance?"

See, e.g., his presentation on small room acoustics.

An awful lot of stuff I harp on (yes, deliberate word choice there) is stuff that I first read from Geddes, often first recoiled from it as it was so contrary to prevailing wisdom, but over time digested intellectually, eventually tried, and confirmed that he was onto something.

I*** I guess we should all stop listening to Toole and Olive and instead listen to you. Fact is, it's not as simple as you imply. Once again you're pushing your opinions as facts. Pathetic...
My opinions are entirely consistent with the published works of Dr. Olive and Dr. Toole, as well as Dr. Geddes, as well as Linkwitz, as well as many others.
 
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DS-21

Full Audioholic
One of the most important things is to add room treatments to improve room acoustics.
Why?

Stating that speakers should be picked to match the room or that well designed speakers don't need a well treated room is illogical.
A conclusory assertion, backed by no evidence.

If your room acoustics are like a tiled bathroom shower
A typical domestic living room will have upholstered furniture, often shelving containing books or other things, either a carpeted floor or area rugs, etc. Your "tiled bathroom shower" hyperbole is unwarranted, and if anything undercuts your case more than it helps your case.

A typical domestic living room does not need "room treatments" of the sort typically sold. They can and do make a difference, but often that difference is negative.

Not to say that there aren't some things one can do to improve the sound. For example, one could use constrained layer damping to turn a pair of walls into bass traps. (The "bass traps" sold commercially are too small to be useful.)

But given what excellent results can be had with loudspeakers appropriate to the room and multiple subwoofers to smooth out the modal region, one should be careful and conservative in applying "room treatments," even if one does not think that most commercial "room treatments" are ungainly eyesores.
 
AcuDefTechGuy

AcuDefTechGuy

Audioholic Jedi
ADTG didn't say room treatments don't make a difference, he said they don't help him. If he can't hear a difference before or after, he is correct that they don't help him regardless of what any chart, graph, or person otherwise says.

This is a huge hurdle for me personally because I have some amount of hearing damage due to numerous ear problems when I was younger. If I can't hear a difference, I won't spend money on something, regardless of what someone else can hear.
Thank you!

Yes. Exactly!

I've bought panels in the past that some people have used and recommended. Did not work for me at all.

I recently bought some Auralex panels and tried different arrangements, including along the side walls and along the front and back walls. I just could not hear any difference.

And I'm not alone. Linkwitz & Peter Azcel apparently don't think acoustic panels do a whole lot for them.

Does Dennis Murphy or Jim Salk have panels in their music room?
 
psbfan9

psbfan9

Audioholic Samurai
Note to self: The next time you audition speakers, keep that sh!t to yourself...:D
 

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