Alexander,
thanks for chime in. I am evaluating getting one of your designs (dxt Mon or cinetor Evo) and was looking for some references and reviews from those models.
I would like to know if you are planning to send a sample to a third party (ASR or Erin's audio) to measure it with the klippel NFS. q
cheers
thanks for chime in. I am evaluating getting one of your designs (dxt Mon or cinetor Evo) and was looking for some references and reviews from those models.
I would like to know if you are planning to send a sample to a third party (ASR or Erin's audio) to measure it with the klippel NFS. q
cheers
Sending finished loudspeaker from Germany to U.S. would be a rather costly endeavor. I don't think Alexander is ready for such expense.
Yeah, you are right...
Well, it seems the only way to check for the performance is to buy the kit.
I think I will pull the trigger on the Cinetor EVO or the DXT Mon RLY, both are within the same cost (around USD$250 per speaker)
Well, it seems the only way to check for the performance is to buy the kit.
I think I will pull the trigger on the Cinetor EVO or the DXT Mon RLY, both are within the same cost (around USD$250 per speaker)
I'm in the process of building the Cinetor-Evo and am having trouble finding the dampening materials mentioned in the guide.
For the cabinet lining, instead of Fibsorb-100 or Bondum-800 is OK to use a felt material for lining, similar to this: Wool Felt - Meniscus Audio
Additionally, could this polyester batting Bonded Dacron - Meniscus Audio be used in place of the Sonofil?
Thanks
For the cabinet lining, instead of Fibsorb-100 or Bondum-800 is OK to use a felt material for lining, similar to this: Wool Felt - Meniscus Audio
Additionally, could this polyester batting Bonded Dacron - Meniscus Audio be used in place of the Sonofil?
Thanks
It would be great if Alexander from Heissmann Accoustics chime it, as he is the designer, but I would dare to say that you can use any type of acoustic material to line up the cabinet (denim, wool felt, corning's black board, melamine foam, polyester with proper thickness, etc.), and still get good results.
Necro’ing this thread with recent experience.
I bought the Disco-M plans recently and I’m quite unimpressed so far.
I can’t comment on the technical quality of the design yet, but the plans I received are extremely basic and are missing a feature present in his pictures of the final product.
Apart from the missing cuts, the information is technically in the document but it takes quite a lot of staring and work to derive an actual build plan from them, and for what they cost I think they should be presented a lot better than they are.
That problem is compounded by the fact that it seems to be impossible to contact Alexander Heißmann to get answers to any questions. I’ve tried several times on email and web in the three+ weeks since I bought the plans and had no response at all.
this is a shame, because he’s got some neat looking stuff on his site but I’m not going to drop more money on his stuff not knowing if the plans will be complete or if I can get answers to questions about them.
I bought the Disco-M plans recently and I’m quite unimpressed so far.
I can’t comment on the technical quality of the design yet, but the plans I received are extremely basic and are missing a feature present in his pictures of the final product.
Apart from the missing cuts, the information is technically in the document but it takes quite a lot of staring and work to derive an actual build plan from them, and for what they cost I think they should be presented a lot better than they are.
That problem is compounded by the fact that it seems to be impossible to contact Alexander Heißmann to get answers to any questions. I’ve tried several times on email and web in the three+ weeks since I bought the plans and had no response at all.
this is a shame, because he’s got some neat looking stuff on his site but I’m not going to drop more money on his stuff not knowing if the plans will be complete or if I can get answers to questions about them.
Do you mean, like a cut list?

I’ve offered this in the past; but then it wasn’t clear whether people wanted metric or imperial, and what kind of boards they have access to (our standard in AU is 2400x1200mm) and it’s slightly regional differences.
So I kind of put a pause on it. Certainly I can see that it does make it handy to give it to your cabinet maker or your local Bunnings / Home Depot panel shop. It certainly isn’t fun trying to do this on the spot.
I’m sure there’s an app for that…
If this not what you’re referring to, and I’m completely off, perhaps @Heissmann Acoustics can clarify. That’s a bit unusual for Alexander to not respond.
Hope he’s doing ok…

I’ve offered this in the past; but then it wasn’t clear whether people wanted metric or imperial, and what kind of boards they have access to (our standard in AU is 2400x1200mm) and it’s slightly regional differences.
So I kind of put a pause on it. Certainly I can see that it does make it handy to give it to your cabinet maker or your local Bunnings / Home Depot panel shop. It certainly isn’t fun trying to do this on the spot.
I’m sure there’s an app for that…
If this not what you’re referring to, and I’m completely off, perhaps @Heissmann Acoustics can clarify. That’s a bit unusual for Alexander to not respond.
Hope he’s doing ok…
I can make a cut list easily enough (and I’ve had to because I’m using 18mm material, not the 19mm available in Germany or 3/4” US folk can get) that’s not a problem.
The issue I have is getting plans that basically consist of some dimensions, a schematic, a couple of sketchup model screenshots and almost nothing in the way of construction information save for “route this bit with the waveguide in place and seal the waveguide where it touches the woofer”.
Maybe I’m being unrealistic, but for €40 on sale, I expected a bit more than that, especially with no way to get answers to questions about the build without leaking the commercial plans on a forum.
I hope Alexander is Ok, too, and his site isn’t defunct but still taking payments and auto-mailing plans links out.
The issue I have is getting plans that basically consist of some dimensions, a schematic, a couple of sketchup model screenshots and almost nothing in the way of construction information save for “route this bit with the waveguide in place and seal the waveguide where it touches the woofer”.
Maybe I’m being unrealistic, but for €40 on sale, I expected a bit more than that, especially with no way to get answers to questions about the build without leaking the commercial plans on a forum.
I hope Alexander is Ok, too, and his site isn’t defunct but still taking payments and auto-mailing plans links out.
I think it’s important to meet customers’ needs. I don’t think you’re being unrealistic. But equally, its hard to account for everything.
We are all individuals. Some people have difficulty reading a circuit diagram, other people have difficulty choosing between a nail or a screw, and others are not sure of the difference between oils or lacquers. And what on earth is automotive 4K? Yet others will have a serious question about whether one can change one of the drivers and use the same design.
I find it hard to anticipate exactly what an individual will need support or assistance with. I don’t want to sound patronising nor do I don’t want to sound dismissive.
Some startups have a forum where users can help each other, +/- 1 on technical support. Others use a Discord channel to share information.
One time I put a comment up on this very forum about how I would show some pictures to demonstrate what I meant; and someone became so irate that (s)he responded about why the Bible with pictures was unpopular, and was sorry that I didn’t get a proper education. Somehow, offering to demonstrate a technical issue visually/graphically had I insinuated that I (or (s)he) had a poor command of English!
Wow, tough crowd.
Alexander may have omitted step by step plans constructions by accident, or on purpose.
I actually find construction threads mundane and long pages filled with lyrical prose inane. If I head yet another reviewer talking about the “veils were lifted” I would…🤢😴 … so we all have our blind spots.
I do think it’s safe for you to post queries here at DIY Audio though.
As long as you don’t reveal the passive crossover diagram or filter transfer function of the active crossover, it’s pretty safe for you to query any ‘missing bits’ of construction information.
You post actually reminded me to touch base with someone who had a query for a photo of an internal cabinet brace. So thank you.
PS.
PVA glue and Clamps. Lots of them.
Route rebates first; then entire cutout.
Go slow, multiple 5-10mm passes at a time.
Butt joint or miter or tongue and groove- whatever floats your boat.
When painting surface preparation is key.
Veneering can be done via the iron on method - it’s actually easy!
We are all individuals. Some people have difficulty reading a circuit diagram, other people have difficulty choosing between a nail or a screw, and others are not sure of the difference between oils or lacquers. And what on earth is automotive 4K? Yet others will have a serious question about whether one can change one of the drivers and use the same design.
I find it hard to anticipate exactly what an individual will need support or assistance with. I don’t want to sound patronising nor do I don’t want to sound dismissive.
Some startups have a forum where users can help each other, +/- 1 on technical support. Others use a Discord channel to share information.
One time I put a comment up on this very forum about how I would show some pictures to demonstrate what I meant; and someone became so irate that (s)he responded about why the Bible with pictures was unpopular, and was sorry that I didn’t get a proper education. Somehow, offering to demonstrate a technical issue visually/graphically had I insinuated that I (or (s)he) had a poor command of English!
Wow, tough crowd.
Alexander may have omitted step by step plans constructions by accident, or on purpose.
I actually find construction threads mundane and long pages filled with lyrical prose inane. If I head yet another reviewer talking about the “veils were lifted” I would…🤢😴 … so we all have our blind spots.
I do think it’s safe for you to post queries here at DIY Audio though.
As long as you don’t reveal the passive crossover diagram or filter transfer function of the active crossover, it’s pretty safe for you to query any ‘missing bits’ of construction information.
You post actually reminded me to touch base with someone who had a query for a photo of an internal cabinet brace. So thank you.
PS.
PVA glue and Clamps. Lots of them.
Route rebates first; then entire cutout.
Go slow, multiple 5-10mm passes at a time.
Butt joint or miter or tongue and groove- whatever floats your boat.
When painting surface preparation is key.
Veneering can be done via the iron on method - it’s actually easy!
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On routing cutouts: go almost all the way down the panel but leave one or two mm thickness. Route through the panel at one spot. Turn panel upside down, mount copying router bit (take a 45 deg bit if you like to end with a beveled cutout backside), and clear last few mm. Et voilà.
That’s some very useful perspective, thank you.I think it’s important to meet customers’ needs. I don’t think you’re being unrealistic. But equally, its hard to account for everything.
We are all individuals. Some people have difficulty reading a circuit diagram, other people have difficulty choosing between a nail or a screw, and others are not sure of the difference between oils or lacquers. And what on earth is automotive 4K? Yet others will have a serious question about whether one can change one of the drivers and use the same design.
I find it hard to anticipate exactly what an individual will need support or assistance with. I don’t want to sound patronising nor do I don’t want to sound dismissive.
To be clear, there is enough information in the plans to build the speakers (absent the dimensions for the lower corner cuts which I can derive to +-10%) there’s just a lot more left to the reader than I was expecting.
I can apply details on cabinet and crossover building from other sources, Troels Gravesen’s crossover build notes and the like so they’ll get built and I’m sure they’ll sound good once they’re done.
IMHO what's really worth paying for in speaker plans is three things:
These are the things that take time, trial & error and/or special equipment to do yourself. Yes, they do get easier with experience, but still not what I would call "easy" if you want to end up with good results.
- (Proven) box dimensions
- (Proven) reflex port dimensions
- (Proven) crossover diagrams
These are the things that take time, trial & error and/or special equipment to do yourself. Yes, they do get easier with experience, but still not what I would call "easy" if you want to end up with good results.
those do not have any acoustic influence. they are only there for aesthetic reasons. you can change them as you like.for the lower corner cuts
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