Feb 4, 2023 at 2:00 PM Post #36,301 of 44,886
Does your infotainment system have a prompt for a 3” thick plexiglass divider between front seats / back seats…?🤣
No, but it has multi-zone climate control
 
Feb 4, 2023 at 2:07 PM Post #36,302 of 44,886
Well - with high-impedance headphones, there is no substitute for a high-impedance OTL tube headphone amplifier: DF9AE3A1-49CE-494D-A73B-A692539323AE.jpeg [I actually prefer Woo WA3 (TS 5998, pair WE 396A) to LTA MZ3 (pair Sylvania 12SN7, pair MOV A2900) for driving Verite Open.]
And my reply would be, "With low impedance headphones, there is no substitute for a low impedance, tubey sounding amp". :smile:

20230204_150037~2.jpg
 
Feb 4, 2023 at 2:15 PM Post #36,303 of 44,886
An especially useful tool if your listening position is off axis. The speaker fires off the signal slightly before or later depending and maybe slightly louder or quieter so that both left and right channels arrive to you at the same time.

With Genelecs this is done in the GLM software. You pre measure and calibrate listening positions. For example you have the "sweet spot" but we can't always sit and listen in the one spot. Maybe you want to listen as you sit on a couch that's way off axis and you have odd distance and angles from your speakers. So you can have 3,4,5,6 different pre loaded listening positions recognized within a room. You've ran room correction tests from these positions. The GLM software algorithms have taken all of these various variations into account and may adjust the time of flight for individual speakers. The software may also bump the dB up or down in a specific frequency to get an even stereo image to the listener. It actually turns many listening positions into many different sweet spots. It's incredibly effective.
I know DSP is used in some speakers and other components. But it never occurred to me it could be used to "fix" a speaker/room interface issue like the "sweet spot."

Does the DSP-induced sweet spot actually sound like the real/naturally occurring one?
 
Feb 4, 2023 at 2:32 PM Post #36,304 of 44,886
I know DSP is used in some speakers and other components. But it never occurred to me it could be used to "fix" a speaker/room interface issue like the "sweet spot."

Does the DSP-induced sweet spot actually sound like the real/naturally occurring one?

That's a great question.

I'd say that the DSP sweet spots can get you to 90-95% of the natural occurring one. It's actually pretty amazing that some of these unusual off axis listening positions can sound so good.

Let me add that it's not only and all DSP. Especially with Genelec(and I'm sure other brands) the shape of the speaker enclosure and the design of the waveguides have a huge impact. You have to have a speaker that can cover a wide dispersion area well first. But the DSP is definitely a major player in this scheme.
 
Feb 4, 2023 at 2:36 PM Post #36,305 of 44,886
Does the DSP-induced sweet spot actually sound like the real/naturally occurring one?
Going back to my example of the way this is implemented in vehicles, I can't answer the question you asked but I can answer the opposite question...

I can tell you with confidence that when "optimize for driver's seat" is activated, the music sounds like complete crap everywhere else in the car.
 
Feb 4, 2023 at 2:54 PM Post #36,306 of 44,886
Not everyone lives in an area where a bullet proof shield is required in the car. 🤣 🤣

But some of us do (at times) :(

Does your infotainment system have a prompt for a 3” thick plexiglass divider between front seats / back seats…?🤣

Hey cabbie, got room up there for a six pack and a pizza?

Sure, pal!

Arghhhhhhhhhhhhh....

Plexiglass dividers! They're not just for carjackings anymore ;)
 
Feb 4, 2023 at 3:09 PM Post #36,307 of 44,886
Here's a picture of the exact speaker I use in my two-channel system. It's a Genelec 8350a it's a two-way speaker with a 1" aluminum tweeter and a 8" woofer.

Notice the shape of the front face of the all aluminum speaker enclosure. It's all smooth and curved by design. Also notice the shape of the wave guide for the tweeter. Large for maximum dispersion. The low and mid band frequencies don't have to be as directional due to the physics of those frequencies. But the high frequencies from the tweeter need to be aimed or pointed more accurately to be heard. Thus the need for a dispersion wave guide.

The whole thing is so interesting. How different manufacturers tackle and solve problems.

Now of course these speakers are designed for studio work. But with the tremendous amount of flexibility they offer I decided I'd use them in my living room in a two-channel system. So these aren't used in a traditional near-field setting, I'd say I use these in a mid-field to far-field setup. Unconventional yes, but they do work well.
 

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Feb 4, 2023 at 3:19 PM Post #36,309 of 44,886
I do long for a beautiful pair of wood panel Tannoy's or Klipsch speakers one day in a more traditional two-channel system. But I have a daughter that's 2 1/2 years away from college($$$$) and her brother that's not far behind. So my current setup will have to get me through a while longer.
 
Feb 4, 2023 at 3:20 PM Post #36,310 of 44,886
Feb 4, 2023 at 3:31 PM Post #36,312 of 44,886
I know DSP is used in some speakers and other components. But it never occurred to me it could be used to "fix" a speaker/room interface issue like the "sweet spot."

Does the DSP-induced sweet spot actually sound like the real/naturally occurring one?

I use Yamaha YPAO to fix the main speakers in my cave, works terrific, I have tuned the speakers for where I sit when I use the computer. It's a major improvement vs straight curve, sounds like a pair of gigantic state of the art headphones in the room. Without YPAO it sounds thin and lifeless. YPAO uses Parametric EQ just like EAPO, only difference is you can very easily measure up your listening position/positions with the bundled microphone.

It's been essential for home theater since forever, but very useful for a simple playing back music setup as well.
 
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Feb 4, 2023 at 4:07 PM Post #36,313 of 44,886
I do long for a beautiful pair of wood panel Tannoy's or Klipsch speakers one day in a more traditional two-channel system. But I have a daughter that's 2 1/2 years away from college($$$$) and her brother that's not far behind. So my current setup will have to get me through a while longer.
Talking about college tuition, i just paid 2 weeks ago for my 2 older boys. With that money, i can buy a quite expensive system and still have some money left over. Two more younger siblings are followed up to their brothers soon. :sob:
:sob:
 
Feb 4, 2023 at 7:43 PM Post #36,314 of 44,886
That's a great question.

I'd say that the DSP sweet spots can get you to 90-95% of the natural occurring one. It's actually pretty amazing that some of these unusual off axis listening positions can sound so good.

Let me add that it's not only and all DSP. Especially with Genelec(and I'm sure other brands) the shape of the speaker enclosure and the design of the waveguides have a huge impact. You have to have a speaker that can cover a wide dispersion area well first. But the DSP is definitely a major player in this scheme.
Excellent reply...thanks!

I should explain that my interest in this room correction thing is strictly academic. In the place my speakers and sub live (a 13' x 13' home office with nearfield configuration), there is only one "sweet spot" (my high-end office chair dead center between the big KEF 2-ways ~3.5 ft. away).

But I can imagine that in a typical multi-seat living/listening room environment, your Genelecs would allow maximum room tuning.
 
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