The speakers around 4:00 are Infinity IRS V. Not sure of the qty, but only a handful were made, obviously. They are designed to reach the ceiling. In fact the design is based on how tall they can be and still be stood up in a normal room. They use multiple EMIT tweeters and mids in line arrays. The cabinet is curved wings sweeping back from the line arrays. They are open backed dipoles. The back towers are the subs using self powered w/ servo control.
@@tullskullOne thing I don't understand is when they say "equipment doesn't matter as much" yet they also say energy output is what matters most for reflections. But as you pointed out electrostatics output LESS energy because they are directionally focused. Therefore, one would assume that less energy output from electrostatics means less energy reflecting around the room.
Hopefully Dennis will comment as well but I think your comment regarding "directed energy" holds the key. Equipment certainly does matter when the speaker's dispersion characteristics are to be considered. Knowing those characteristics and applying complimentary acoustic reinforcement are desired no matter the type of gear as long as the listener is desiring good sound and resolution. I hope my comment addresses your question. If I have misunderstood please don't hesitate to clarify.
Thanks for an interesting presentation. I believe the speakers at just before 4 minutes are modified IRS speakers. Does not the line source nature of the design restrict vertical dispersion and, consequently, ceiling and floor reflections? Thanks!
With muliple drivers in a line array configuration, you must deal with both floor and ceiling reflections. Anytime you have an energy producing source close to a room boundary surface, you will have time delayed, floor to ceiling and ceiling to floor reflections. Remember room resolution depends on doing many things correctly and in the proper sequence. It is best to mamage all primary, secondary, tertiary and all the others. The higher the room resolution, the more you hear your errors.
@@AcousticFieldsMultiple speakers means multiple paths from source to listener bouncing sides, floor, ceiling when rising in frequency. I don't like this configuration in closed space, may create more problems than those are solved (phase distorsion eg.)
Great video Dennis! I'd have to say after years of watching this is one to watch (realistic goals and advice given based on use case, multi-purpose)!! Bonus: 2nd example, I see this one more than I should as speaker manufacturers will tell you no speaker is too large for your room (I can't tell you how misleading these ridiculous comments are, sad)...
It's the way of the world, quantity over quality. Placing more energy into a room or box does not improve sound quality. It only creates more room issues.
Here in Queensland almost all new-ish houses have huge areas of glass with one saving grace (maybe): for much of the year all the doors and windows are open.
setup some cheap gear outside, no side and rear wall refelctions sounds amazing. after trying it Im covering my listening area windows in gyprock and insulation 😃😃😃😃
Not true or easy. Remember, you have reflections along with pressure issues. Walls that are splayed or angled will assist with reflection management if the angle is properly calculated which in our experience over 18 years, it never is and the proper rate and level of absorption treatment is utilized which once again it never is. Spayed walls will not reduce pressure since the dimension is the sole determinate of lower frequency pressure issues.
@@AcousticFields . Well, perhaps splayed doesn't best describe what I envision as a rather interesting wall treatment to the point of first reflection and more. So that we agree though, the side walls would remain perpendicular to the front wall. I'm not talking rebuilding the side walls angled to the front wall here . Also, I'm not talking low frequency treatment here either. It's also not just the ugly wall panels that are a problem. Even worse is that no nice artwork and light sconces etc. will have space. There's also usually glass that can't be covered with treatment as well. On the side wall, all the way at the back, fabricate a shallow closet with a floor to ceiling side door. Disguise it as an architectural column of sorts with crown moldings etc. Now attach a rail the length of the wall at ceiling height with a stanchion that clears any artwork hanging. Now install floor to ceiling vertical blinds. They can be run out covering every square foot of the side walls and then be retracted out of sight into the hidden architectural feature. The walls stay art full & the glass panes can be treated. I'm glad you mentioned air pressure because the slats will hang in mostly free air and because they are, they will dampen the incoming wave. Moreover, the PVC slats can be optioned with metal foil insert on one side and cushioned fabric on the other. Since the blinds rotate they can be angled at the driver and reflected to anywhere. One can actually move the point of first reflection closer to or further from the front wall. The angle of inclination is variable to the angle of declination. Acid Jazz, Funk & Brass 🔈🔉🔊
If I was going to spend the money that some of these people had spent on equipment / gear it's a no-brainer to hire someone such as yourself to make a suitable Listening Room
Since the room accounts for at least 50% of what you hear, the room must be considered at the same importance level as the gear. We get calls everyday from people who are fence sitting. They are trying to decide if they should buy new gear with their budget money or treat the room. Those that decide to treat their room, always end up keeping their gear. We get comments like, "All the original reasons I bought my gear have come back to me again."
I like this video. This format where you analyze and critique peoples listening spaces is a good idea.
The mistakes of others can help us understand what not to do.
The speakers around 4:00 are Infinity IRS V. Not sure of the qty, but only a handful were made, obviously. They are designed to reach the ceiling. In fact the design is based on how tall they can be and still be stood up in a normal room. They use multiple EMIT tweeters and mids in line arrays. The cabinet is curved wings sweeping back from the line arrays. They are open backed dipoles. The back towers are the subs using self powered w/ servo control.
Lets focus more on the room issues than the grear. Rememeber, the room only sees energy. It does matter the source.
@@AcousticFields I just think about the huge cost of the gear while still having a 9 foot ceiling.
@@AcousticFields Dennis, I think he might have been trying to point out that the drivers are ribbons with very limited vertical dispersion.
@@tullskullOne thing I don't understand is when they say "equipment doesn't matter as much" yet they also say energy output is what matters most for reflections.
But as you pointed out electrostatics output LESS energy because they are directionally focused. Therefore, one would assume that less energy output from electrostatics means less energy reflecting around the room.
Hopefully Dennis will comment as well but I think your comment regarding "directed energy" holds the key. Equipment certainly does matter when the speaker's dispersion characteristics are to be considered. Knowing those characteristics and applying complimentary acoustic reinforcement are desired no matter the type of gear as long as the listener is desiring good sound and resolution.
I hope my comment addresses your question. If I have misunderstood please don't hesitate to clarify.
Thanks for an interesting presentation. I believe the speakers at just before 4 minutes are modified IRS speakers. Does not the line source nature of the design restrict vertical dispersion and, consequently, ceiling and floor reflections? Thanks!
That's what I was thinking. Ribbon drivers.
With muliple drivers in a line array configuration, you must deal with both floor and ceiling reflections. Anytime you have an energy producing source close to a room boundary surface, you will have time delayed, floor to ceiling and ceiling to floor reflections. Remember room resolution depends on doing many things correctly and in the proper sequence. It is best to mamage all primary, secondary, tertiary and all the others. The higher the room resolution, the more you hear your errors.
The speaker's array of distribution will balance reflections in some areas but not in others.
@@AcousticFields Agreed, that's why I was cautious in the extent of my comment. Thanks!
@@AcousticFieldsMultiple speakers means multiple paths from source to listener bouncing sides, floor, ceiling when rising in frequency. I don't like this configuration in closed space, may create more problems than those are solved (phase distorsion eg.)
As always dropping jewels. Thanks Dennis
Thanks. Appreciate it.
6:48 , i haven't laughed that hard in a long time thank you.
Thank you.
Great video Dennis! I'd have to say after years of watching this is one to watch (realistic goals and advice given based on use case, multi-purpose)!! Bonus: 2nd example, I see this one more than I should as speaker manufacturers will tell you no speaker is too large for your room (I can't tell you how misleading these ridiculous comments are, sad)...
It's the way of the world, quantity over quality. Placing more energy into a room or box does not improve sound quality. It only creates more room issues.
Here in Queensland almost all new-ish houses have huge areas of glass with one saving grace (maybe): for much of the year all the doors and windows are open.
Stay away from glass. It has a negative impact on frequencies from 800 - 2,000 hz.
setup some cheap gear outside, no side and rear wall refelctions sounds amazing. after trying it Im covering my listening area windows in gyprock and insulation 😃😃😃😃
@@Angellus502 maybe just knock down all the walls.
@@2ridiculous41 Working on it... a foot of absobtion will hopefully get close
.
Just make the entire wall's reflective angle variable to the drivers. Easy.
Acid Jazz, Funk & Brass 🔈🔉🔊
Not true or easy. Remember, you have reflections along with pressure issues. Walls that are splayed or angled will assist with reflection management if the angle is properly calculated which in our experience over 18 years, it never is and the proper rate and level of absorption treatment is utilized which once again it never is. Spayed walls will not reduce pressure since the dimension is the sole determinate of lower frequency pressure issues.
@@AcousticFields .
Well, perhaps splayed doesn't best describe what I envision as a rather interesting wall treatment to the point of first reflection and more. So that we agree though, the side walls would remain perpendicular to the front wall. I'm not talking rebuilding the side walls angled to the front wall here . Also, I'm not talking low frequency treatment here either.
It's also not just the ugly wall panels that are a problem. Even worse is that no nice artwork and light sconces etc. will have space. There's also usually glass that can't be covered with treatment as well.
On the side wall, all the way at the back, fabricate a shallow closet with a floor to ceiling side door. Disguise it as an architectural column of sorts with crown moldings etc. Now attach a rail the length of the wall at ceiling height with a stanchion that clears any artwork hanging. Now install floor to ceiling vertical blinds. They can be run out covering every square foot of the side walls and then be retracted out of sight into the hidden architectural feature. The walls stay art full & the glass panes can be treated.
I'm glad you mentioned air pressure because the slats will hang in mostly free air and because they are, they will dampen the incoming wave. Moreover, the PVC slats can be optioned with metal foil insert on one side and cushioned fabric on the other. Since the blinds rotate they can be angled at the driver and reflected to anywhere. One can actually move the point of first reflection closer to or further from the front wall. The angle of inclination is variable to the angle of declination.
Acid Jazz, Funk & Brass 🔈🔉🔊
@@AcousticFields .
You're Welcome. And don't forget the 5% royalty fee every time you implement my method with a customer.
Acid Jazz, Funk & Brass 🔈🔉🔊
If I was going to spend the money that some of these people had spent on equipment / gear it's a no-brainer to hire someone such as yourself to make a suitable Listening Room
Since the room accounts for at least 50% of what you hear, the room must be considered at the same importance level as the gear. We get calls everyday from people who are fence sitting. They are trying to decide if they should buy new gear with their budget money or treat the room. Those that decide to treat their room, always end up keeping their gear. We get comments like, "All the original reasons I bought my gear have come back to me again."