Hi,
I would like to know if you have some experience with Heissmann Acoustics.
I've contacted Alexander from Heissmann Acoustics, and he has been very helpful, and he also seems to know very good his trade, but since I am not from Germany nor Europe, I don't have many references on his work.
I saw the comparison on the DXT vs the Neumann and it looks very promising! But what about the Cinetor? I am looking for a speaker for home theater (5x identical speakers) and the DXT Mon 182 seems a little steep price wise... besides that slanted baffle! I am not that skilled with my saw.
Anyway, any comment on Heissmann Acoustics would be greatly appreciated!
Also, If you know of any other recommended DIY home cinema speaker, speak please!
I would like to know if you have some experience with Heissmann Acoustics.
I've contacted Alexander from Heissmann Acoustics, and he has been very helpful, and he also seems to know very good his trade, but since I am not from Germany nor Europe, I don't have many references on his work.
I saw the comparison on the DXT vs the Neumann and it looks very promising! But what about the Cinetor? I am looking for a speaker for home theater (5x identical speakers) and the DXT Mon 182 seems a little steep price wise... besides that slanted baffle! I am not that skilled with my saw.
Anyway, any comment on Heissmann Acoustics would be greatly appreciated!
Also, If you know of any other recommended DIY home cinema speaker, speak please!
It would be very hard to find kit on the web that is provided with such extensive measurements. I can' t remember single one. They also measure very good so, if you're in need of a speaker of that format, go for it.
Only better thing he could do regarding his presentation of data is to do it by CTA/CEA2034 standard aka Spinorama and calculate Estimated In Room Response (ERDI). All can be done by importing ARTA measurements in VituixCad.
Only better thing he could do regarding his presentation of data is to do it by CTA/CEA2034 standard aka Spinorama and calculate Estimated In Room Response (ERDI). All can be done by importing ARTA measurements in VituixCad.
I agree that the measured performance of his loudspeakers is superb. They would sound every bit a good as the room allows.
Have to 100% agree with Zvu's comments.
There is lots of good quality information at the website, which would take a lot of time and effort to produce.
In my case I have unfortunately not heard any of the designs, so cannot comment on sound aspects, at the same time as Cowanaudio reminds us they will sound as good as your room allows.
There is lots of good quality information at the website, which would take a lot of time and effort to produce.
In my case I have unfortunately not heard any of the designs, so cannot comment on sound aspects, at the same time as Cowanaudio reminds us they will sound as good as your room allows.
I have been very inspired by his designs and bought the Seas DXT for this reason and mated it with first a 5" alu midrange - but later bought a Dayton RS125 because of its smooth extended FR both on and off axis, which I now really like together with two SB23NRX and 4 subwoofers.
I believe a lot in finding the balance between science and real life and think that this is one of my best speakers to date. Also his work with testing drivers in different baffles, to bring some proper technical background for his speaker design - is awesome 😎
So absolutely love from me to Alexander for his work
I believe a lot in finding the balance between science and real life and think that this is one of my best speakers to date. Also his work with testing drivers in different baffles, to bring some proper technical background for his speaker design - is awesome 😎
So absolutely love from me to Alexander for his work

Why do you doubt Heissmann Acoustics kits?
Please don`t misunderstand me, I am not doubting. I just wanted to hear any experience, comment or recommendation on their designs.
Not too sure about the validity of the official measurements. I built a pair of the Cinetor Evo kit and here's the gated response.
I ended up making my own crossover and changing the port as well. Tuning was measured to 72 Hz as opposed to 55 Hz.
I ended up making my own crossover and changing the port as well. Tuning was measured to 72 Hz as opposed to 55 Hz.
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Defo,
Thanks for your experience.
Do you have any comments on how the Cinetor Evo sounds? (the factory XO)
Thanks for your experience.
Do you have any comments on how the Cinetor Evo sounds? (the factory XO)
Not too sure about the validity of the official measurements. I built a pair of the Cinetor Evo kit and here's the gated response.
I ended up making my own crossover and changing the port as well. Tuning was measured to 72 Hz as opposed to 55 Hz.
Did you contact Alexander about this? Personally, I don't pay attention to posted measurements on a DIY site. Too many variables involved...
True. Too many variables, but then there are not many review sites that review DIY designs, so it's kind of the only "objective" comment on how they sound.
Reflections are gated out, so the measurement should be quite close to reality/anechoic. Note that the previous measurement was from 300 Hz.
Most measurements posted on forums like these are in-room, which I agree are useless.
Tonal balance sounded more or less like the measurements indicate (smiley curve). Too bright top, and too fat bottom. Other than that the transparency and soundstage was fantastic.
Here's the impulse response:
Most measurements posted on forums like these are in-room, which I agree are useless.
Tonal balance sounded more or less like the measurements indicate (smiley curve). Too bright top, and too fat bottom. Other than that the transparency and soundstage was fantastic.
Here's the impulse response:
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Smiley curve would sound "entertaining" in a home theater speaker, but clearly it's not was is show in Heissmann accoustics page, which shows a flat (+/- 1.5db) FR.
I am on the verge of just going with "off the shelf" active speakers for the same price (around USD$500 e/a) like Neumann KH80, but with a 4" woofer it will clearly lack the "power" needed for an exciting move watching experience...
I am on the verge of just going with "off the shelf" active speakers for the same price (around USD$500 e/a) like Neumann KH80, but with a 4" woofer it will clearly lack the "power" needed for an exciting move watching experience...
Reflections are gated out, so the measurement should be quite close to reality/anechoic. Note that the previous measurement was from 300 Hz.
The difference looks hard to understand in terms of driver variability but the shape is somewhat suggestive of an uncalibrated microphone. Are you confident the measurements included the calibration curve?
I am on the verge of just going with "off the shelf" active speakers for the same price (around USD$500 e/a) like Neumann KH80, but with a 4" woofer it will clearly lack the "power" needed for an exciting move watching experience...
Neumann make good stuff but a 4" driver is too small for standard levels when used as a desktop speaker nevermind main speakers.
Yes, I know... in any case I failed to mention that my home theater room is quite small so I might get get around with smaller speakers, but still... 4" won't offer much mid bass kick (Neumann's or similar probably will offer uber precise performance but that is not really engaging when watching a movie)
4" drivers are midrange material IMO and don't have the ability to produce entertaining levels under 200 Hz, so you'll be lacking that low midrange "body" as well. I'd have a 6" LF driver at a minimum and use a pair of subs (real stereo bass on 2 channel recordings) to fill in the bottom.
I have the Neumann KH120s as nearfields. I really like them, even without subs. There is plenty of acoustic adjustment flexibility to adapt them to a specific listening environment. Resolution is very good for an off the shelf monitor.
I have the Neumann KH120s as nearfields. I really like them, even without subs. There is plenty of acoustic adjustment flexibility to adapt them to a specific listening environment. Resolution is very good for an off the shelf monitor.
Yes, I know... in any case I failed to mention that my home theater room is quite small so I might get get around with smaller speakers, but still... 4" won't offer much mid bass kick (Neumann's or similar probably will offer uber precise performance but that is not really engaging when watching a movie)
It won't offer uber performance it will crap out at anything other than quiet levels. Neumann to their credit provide clean SPL plots as part of the spec and so you don't need to take my word for it just look it up.
A competently designed 6.5" 2 way with subs (?) can offer reasonable sound quality at approaching standard levels subject to the room. A 4" 2 way is almost certainly too small to be viable whatever the "quality" of the speaker.
Room size can influence the average SPL level in the room but not really the peak level. The peak level follows primarily from how far away you are from the speakers (which tends to be closer in smaller rooms). Perceived loudness largely follows average SPLs whereas high sound quality requires the clean reproduction of peaks. This is why speakers with drivers that are too small to cleanly reproduce peaks can be considered by some to be loud enough particularly in the presence of significant room boom. They are loud enough to reproduce average levels but not peak levels.
Thanks for your message!
By "uber performance" i meant flat uncolored response, and I under stand what you say.
And yes, all the speakers I am looking are meant to be used with at least 2 subwoofers, which I already have, and probably buy 2 more.
If I understand correctly, you recommend to have a speaker with enough "room" available to produce correctly and undistorted peak levels, whereas... 6.5" woofer is the start point. Correct?
By "uber performance" i meant flat uncolored response, and I under stand what you say.
And yes, all the speakers I am looking are meant to be used with at least 2 subwoofers, which I already have, and probably buy 2 more.
If I understand correctly, you recommend to have a speaker with enough "room" available to produce correctly and undistorted peak levels, whereas... 6.5" woofer is the start point. Correct?
Thanks for your message!
By "uber performance" i meant flat uncolored response, and I under stand what you say.
And yes, all the speakers I am looking are meant to be used with at least 2 subwoofers, which I already have, and probably buy 2 more.
If I understand correctly, you recommend to have a speaker with enough "room" available to produce correctly and undistorted peak levels, whereas... 6.5" woofer is the start point. Correct?
A higher end 6" 2 way design is the best compromise I'd recommend that will give you decent wide band dynamics (with subs) and high resolution. A larger bass/mid will dictate too low a crossover point (lack of dynamics) stressing the tweeter and a smaller one won't be able to move enough air (again, lack of dynamics) to convey realistic lower mids at higher levels.
You'll get lots of opinions regarding stereo vs mono subs. The biggest argument for multiple subs is smoother LF in-room response which is by far the most important criteria (for me), plus better dynamics and integration with the other speakers. Most people here will likely agree.
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