Hi Byron, just get in touch with us through info@kv2audio.com and please leave us with your location (country) so our distributor can get in touch with you. Thank you for your interest.
Hello there, thanks for the very good explanations about your products as well as other technical topics related to. However based on my 20+ years of experience doing live audio I know for sure some few things that disagree with you guys. 1.- It is really bad to run an amplifier, name it full range, mid range, high range into 2 ohms load. Even worse for subwoofers, the car audio products run at 2, 1 or even 0.5 ohm load with very bad results even with the use of rigid suspensions a the speaker cone to provide some sort of passive damping factor. The best in my experience is 4 ohm for subs and mids and if possible 8 ohm for highs. 2.- Amplifiers of class D,H,T or whatever they call to switching amplifiers lack the audio fidelity of Class B amplifiers but they are very energy efficient. Good for subwwofers, their weaknesses can be masked by mids and highs very easy 3.- Class A, AB with output transformers are good in terms of impedance BUT transformers introduce Harmonic Distortion. Which I think it may be heard on your Super Live Audio system. 4.- 21 inch subwoofers. The speaker cone is very large and heavy therefore is very hard toy keep it under control, even 18 inch subwoofers are not easy to control but once again, their weaknesses can be masked very easy. I´m not criticizing your products, I havn´t used them or listened to yet. The point source technology you developed seem a very clever idea, it´s like having a super large studio monitor without the issues presented by line array technology. hope to have a chance to listen your products soon. I hope you have the time to answer my points which in no way are a recipe but a point to start a conversation. Sincerely Alvaro H Romero
Hi Alvaro, Thank you for taking the time to comment on our technology. We are open to all opinions and you clearly have some technical knowledge or experience of other speakers to base these opinions on, which we respect. Beyond that technical approach we are also very excited about the opportunity for you to actually listen to a KV2 system one day and apply your knowledge to a critical but real experience of KV2 technology. To cover just a few of your theoretical points, where with respect some of your assumptions are not quite correct in relation to our technology and design principles. ad Q1 We also agree that where possible the impedance should not be too low and that is why in the majority of our point source solutions you will find significant use of 16 ohm speakers in order not to load the amplifiers too low. For example in VHD 2.0, the two 12” low mids are 16 ohm speakers in parallel presenting an 8 ohm load which the amplifier can drive very effectively. The same for the Midrange and the single HF at 8 ohms as well. In our smaller ES system the Low Mid actually loads the amplifier at 16 ohms, with the Mid and High at 8 ohms each. Again no problem. Our subwoofers, for example VHD 2.21 passive double 21”, ES 2.6 passive double 15” and even the Active EX 2.2 double 12” all use 16 ohm speakers to present a combined 8 ohm load to the amplifier. It seems on this point we can agree? ad Q2 We also agree that switching amplifiers are not so good for situations where true high fidelity is required. That is the reason why we avoid them whenever possible in areas of greater sonic importance, for example the Midrange and High frequencies of our systems.I think so far we have some common ground and beliefs on this as well. ad Q3 As you will be aware there is more than one kind of distortion and the benefits of a transformer for reducing the intermodulation distortion outweighs any other downside in our own opinion, when driving a system hard through critical listening tests. There is also more than one kind of Harmonic Distortion and the choices we make in amplifier design and loading methodology are aimed at dramatically reducing Third Harmonic Distortion. This is SIGNIFICANTLY more audible to the human ear than 2nd Harmonic Distortion. In all large scale Audio reproduction systems there has to be some compromise in order to achieve the end goal of faithful reproduction of the original source, particularly over long distance. Our focus has been on minimising those compromises and choosing our areas of compromise very carefully to absolutely reduce the AUDIBLE distortion. WE ARE MUCH MORE INTERESTED IN WHAT AN EDUCATED PERSON CAN HEAR THAN WHAT HE OR SHE CAN MEASURE! We find that the industry has become obsessed with prediction software and frequency response curves which tell very little about how a speaker or electronics will actually sound in “real life” with a complex signal under load. We could play you three different speakers which have an identical frequency response, but which sound completely different. Most people are shocked by this, because they have grown up surrounded by marketing and believing the charts and diagrams will describe perfectly how a system will sound. The biggest reason for these anomalies, in so many systems, is the lack of attention paid to “Time" You come close to referencing this yourself with your point below on the control of large mass speakers and how quickly and efficiently both the electronics and the speakers can react to a dynamic and musical change. ad Q4 You will have made a friend with George Krampera our Chief Engineer as he also believes for accurate reproduction of a bass line the speakers would be lighter and faster than a typical 21", like our double 15’s for example. Sound is subjective though and Bass / Sub even more so. With EDM’s increasing popularity there are now so many different requirements for Subwoofers and none are specifically right or wrong in their own right. Our job as a manufacturer is to offer a complete range of solutions from a fast reacting double 12” sub to a lower but arguably slightly slower double 21”. That said, we are told by not only KV2 users, but also several other manufacturers that our double 21” is the fastest they have ever heard. That doest mean to say that it would be your first choice, but it does have remarkable articulation for a large mass subwoofer. To give an analogy, with our double 21” we make one of the most powerful Trucks in the world. But if Formula one is your business, you should choose something smaller, lighter and more responsive. We also offer those solutions and we won’t tell you which one to buy. We would just ask you to take the time to listen before making your choice or comment. On a final note - With a primary focus of sharing our videos through RUclips we try to avoid the site becoming a Forum for debating different approaches of speaker design. There are many other sites more suitable for that. I would like to truly thank you for your time spent watching and commenting on our videos, in the end we seem to agree on many points. The next step will be when you finally get to hear or use a KV2 Super Live Audio system. That should be your primary goal now if you intend to continue your research on our company. We would also be happy to continue this conversation, via our info@kv2audio.com address, if you require any further information once you have listened. Thank you - Jonathan Reece-Farren on behalf of KV2 Audio.
After running sound at several concerts in the past 5 years on ES and VHD systems, owning 6 speakers and their amps from their monitor line, I can say that they make some of the best sounding amps/speakers in the world, they really make your life easy when you run sound at a big concert. About the 21" subs, believe me, they are on par with some of the fastest 18" subs out there.
This sounds like you have used speakers and systems from 40 years ago , you obviously don't know anything about audio or how to run a live sound reinforcement event.. Disregard this guy and delete his comment.
Slightly spotty explanations, especially when covering the infamous topic of damping factor. The "host" doing the interview is the worse part to this series & probably not needed. At times the interviewer just gets in the way of a full explaination from this gentleman, whom, I'd thoroughly enjoy listening to if allowed to talk away as he will. Unfortunate these were cuts so short in length.
"Current" sink has nothing to do with diaphragm control. And no the standard for Damping is 400hz Lots of word salad here. Must be for selling to simpletons. KV2 is not all that. No?
I'm interested in your product for DJ set up can you help me some more is that's the right thing for me
What is you price on your produc
Hi Byron, just get in touch with us through info@kv2audio.com and please leave us with your location (country) so our distributor can get in touch with you. Thank you for your interest.
Hello there, thanks for the very good explanations about your products as well as other technical topics related to. However based on my 20+ years of experience doing live audio I know for sure some few things that disagree with you guys.
1.- It is really bad to run an amplifier, name it full range, mid range, high range into 2 ohms load. Even worse for subwoofers, the car audio products run at 2, 1 or even 0.5 ohm load with very bad results even with the use of rigid suspensions a the speaker cone to provide some sort of passive damping factor. The best in my experience is 4 ohm for subs and mids and if possible 8 ohm for highs.
2.- Amplifiers of class D,H,T or whatever they call to switching amplifiers lack the audio fidelity of Class B amplifiers but they are very energy efficient. Good for subwwofers, their weaknesses can be masked by mids and highs very easy
3.- Class A, AB with output transformers are good in terms of impedance BUT transformers introduce Harmonic Distortion. Which I think it may be heard on your Super Live Audio system.
4.- 21 inch subwoofers. The speaker cone is very large and heavy therefore is very hard toy keep it under control, even 18 inch subwoofers are not easy to control but once again, their weaknesses can be masked very easy.
I´m not criticizing your products, I havn´t used them or listened to yet. The point source technology you developed seem a very clever idea, it´s like having a super large studio monitor without the issues presented by line array technology. hope to have a chance to listen your products soon.
I hope you have the time to answer my points which in no way are a recipe but a point to start a conversation.
Sincerely
Alvaro H Romero
Hi Alvaro,
Thank you for taking the time to comment on our technology. We are open to
all opinions and you clearly have some technical knowledge or experience
of other speakers to base these opinions on, which we respect. Beyond that
technical approach we are also very excited about the opportunity for you
to actually listen to a KV2 system one day and apply your knowledge to a
critical but real experience of KV2 technology.
To cover just a few of your theoretical points, where with respect some of
your assumptions are not quite correct in relation to our technology and
design principles.
ad Q1
We also agree that where possible the impedance should not be too
low and that is why in the majority of our point source solutions you will
find significant use of 16 ohm speakers in order not to load the
amplifiers too low. For example in VHD 2.0, the two 12” low mids are 16
ohm speakers in parallel presenting an 8 ohm load which the amplifier can
drive very effectively. The same for the Midrange and the single HF at 8
ohms as well. In our smaller ES system the Low Mid actually loads the
amplifier at 16 ohms, with the Mid and High at 8 ohms each. Again no
problem. Our subwoofers, for example VHD 2.21 passive double 21”, ES 2.6
passive double 15” and even the Active EX 2.2 double 12” all use 16 ohm
speakers to present a combined 8 ohm load to the amplifier. It seems on
this point we can agree?
ad Q2
We also agree that switching amplifiers are not so good for
situations where true high fidelity is required. That is the reason why we
avoid them whenever possible in areas of greater sonic importance, for
example the Midrange and High frequencies of our systems.I think so far we
have some common ground and beliefs on this as well.
ad Q3
As you will be aware there is more than one kind of distortion
and the benefits of a transformer for reducing the intermodulation
distortion outweighs any other downside in our own opinion, when driving a
system hard through critical listening tests. There is also more than one
kind of Harmonic Distortion and the choices we make in amplifier design
and loading methodology are aimed at dramatically reducing Third Harmonic
Distortion. This is SIGNIFICANTLY more audible to the human ear than 2nd
Harmonic Distortion. In all large scale Audio reproduction systems there
has to be some compromise in order to achieve the end goal of faithful
reproduction of the original source, particularly over long distance. Our
focus has been on minimising those compromises and choosing our areas of
compromise very carefully to absolutely reduce the AUDIBLE distortion.
WE ARE MUCH MORE INTERESTED IN WHAT AN EDUCATED PERSON CAN HEAR THAN WHAT HE OR SHE CAN MEASURE!
We find that the industry has become obsessed with prediction software and
frequency response curves which tell very little about how a speaker or
electronics will actually sound in “real life” with a complex signal under
load. We could play you three different speakers which have an identical
frequency response, but which sound completely different. Most people are
shocked by this, because they have grown up surrounded by marketing and
believing the charts and diagrams will describe perfectly how a system
will sound. The biggest reason for these anomalies, in so many systems,
is the lack of attention paid to “Time" You come close to referencing this
yourself with your point below on the control of large mass speakers and
how quickly and efficiently both the electronics and the speakers can
react to a dynamic and musical change.
ad Q4
You will have made a friend with George Krampera our Chief
Engineer as he also believes for accurate reproduction of a bass line the
speakers would be lighter and faster than a typical 21", like our double
15’s for example. Sound is subjective though and Bass / Sub even more so.
With EDM’s increasing popularity there are now so many different
requirements for Subwoofers and none are specifically right or wrong in
their own right. Our job as a manufacturer is to offer a complete range of
solutions from a fast reacting double 12” sub to a lower but arguably
slightly slower double 21”. That said, we are told by not only KV2 users,
but also several other manufacturers that our double 21” is the fastest
they have ever heard. That doest mean to say that it would be your first
choice, but it does have remarkable articulation for a large mass
subwoofer.
To give an analogy, with our double 21” we make one of the most powerful
Trucks in the world. But if Formula one is your business, you should
choose something smaller, lighter and more responsive. We also offer those
solutions and we won’t tell you which one to buy. We would just ask you to
take the time to listen before making your choice or comment.
On a final note - With a primary focus of sharing our videos through RUclips we try to avoid the site becoming a Forum for debating different
approaches of speaker design. There are many other sites more suitable for
that. I would like to truly thank you for your time spent watching and
commenting on our videos, in the end we seem to agree on many points. The
next step will be when you finally get to hear or use a KV2 Super Live
Audio system. That should be your primary goal now if you intend to
continue your research on our company.
We would also be happy to continue this conversation, via our
info@kv2audio.com address, if you require any further information once you
have listened.
Thank you - Jonathan Reece-Farren on behalf of KV2 Audio.
After running sound at several concerts in the past 5 years on ES and VHD systems, owning 6 speakers and their amps from their monitor line, I can say that they make some of the best sounding amps/speakers in the world, they really make your life easy when you run sound at a big concert. About the 21" subs, believe me, they are on par with some of the fastest 18" subs out there.
This sounds like you have used speakers and systems from 40 years ago , you obviously don't know anything about audio or how to run a live sound reinforcement event.. Disregard this guy and delete his comment.
Slightly spotty explanations, especially when covering the infamous topic of damping factor. The "host" doing the interview is the worse part to this series & probably not needed. At times the interviewer just gets in the way of a full explaination from this gentleman, whom, I'd thoroughly enjoy listening to if allowed to talk away as he will. Unfortunate these were cuts so short in length.
"Current" sink has nothing to do with diaphragm control.
And no the standard for Damping is 400hz
Lots of word salad here.
Must be for selling to simpletons.
KV2 is not all that. No?