Great info!
How you made your synergy boxes,I mean what plans, CNC?
Any pvc or 3d printed parts?
How you made your synergy boxes,I mean what plans, CNC?
Any pvc or 3d printed parts?
I made plans myself. Similar to SH46 but a bit modified for 5" midranges. Part for compression driver and mids it's 3d printed. It is more accurate and makes everything much easier. It"s specifically designed for those mids and include smooth horn entry for better CD-horn coupling. Everything else is made by CNC from 18mm birch
Wow,
Is it possible that you can share your plans with we mere mortals that do not have the IQ to crank up plans ,3D print and CNC that feat of a project to completion , not to say the FIR tables implementation in to you powersoft amps, that I think is part of the good sound , as people who compared the DSP from powersoft vs the china clones , concluded that power soft DSP is far superior.
The same cab sounded louder and cleaner with the powersoft.
Is it possible that you can share your plans with we mere mortals that do not have the IQ to crank up plans ,3D print and CNC that feat of a project to completion , not to say the FIR tables implementation in to you powersoft amps, that I think is part of the good sound , as people who compared the DSP from powersoft vs the china clones , concluded that power soft DSP is far superior.
The same cab sounded louder and cleaner with the powersoft.
I would prefer not to share plans since my synergy still closely resembles original SH46. Could do synergy build in future on this forum - plans are to design 2x8"+1" cd for dj monitors/frontfills.
Actually MF and LF require minimal eq correction, crossover between those two is 400hz so FIR could still be used. DCX on the other hand requires relatively heavy correction (nothing crazy tho) also MF section of DCX requires phase correction. Other 2 crossover points are 1200hz and 4500hz.
Used only 6/12 db slopes for lowpass of sections since design also provides acoustics rolloff and sections couple perfectly. Now on Version 3 of dsp settings already 🙂
As for headroom and sensitivity between different sections, 2x12 inches are far behind MF/HF section and require quite a bit more power. 2 midranges actually have a bit more headroom than dcx, that is preety amaizing. Was worried 2 midranges would not be enough but they have more output than DCX, sensitivity is similar.
found this picture i took of smaart, measured inside so some inconsistencies, especially at lower mids.
Processing is nothing too extreme, then just correct delay is applied to get correct time alignment.
For limiters I use powersoft calculator, set power at AES power and had no issues.
Actually MF and LF require minimal eq correction, crossover between those two is 400hz so FIR could still be used. DCX on the other hand requires relatively heavy correction (nothing crazy tho) also MF section of DCX requires phase correction. Other 2 crossover points are 1200hz and 4500hz.
Used only 6/12 db slopes for lowpass of sections since design also provides acoustics rolloff and sections couple perfectly. Now on Version 3 of dsp settings already 🙂
As for headroom and sensitivity between different sections, 2x12 inches are far behind MF/HF section and require quite a bit more power. 2 midranges actually have a bit more headroom than dcx, that is preety amaizing. Was worried 2 midranges would not be enough but they have more output than DCX, sensitivity is similar.
found this picture i took of smaart, measured inside so some inconsistencies, especially at lower mids.
For limiters I use powersoft calculator, set power at AES power and had no issues.
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Very nice info amigo, I don't think where you live you will get reached by the copyright patrol if any, if you did not x-ray or cut in half an sh46 and copy the dimensions / plans to the nearest mill spec to sell your copies in AliExpress and Alibaba.
You can sleep worry free at night 😎
You said you made similar to TH18 subs,
Those are very close to DSL TH118 although not identical.
Btw there are the FT30 variation of those , it is a mod done to the xoc1 TH18 by EPA to reach 30hz flat instead of the 35Hz the TH18 was designed.
Somebody made the CNC plans for it later on and uploaded it to the original thread.
If you have not have the DXF files already I can post them if you are interested in CNC out some, still I think that your BC subs will do better.
Let me know if you need the DXF , sometimes is a pita to dive in several hundred pages of a thread to find plans.
Cheers.
I would still prefer not to share plans due to respect for inventor Tom Danley, sorry. There are many threads but I can give you some info on how to design such box (might not be 100% correct but this is how I do it)
Taps act as bandpass, volume in front of the driver is very important. Less volume means driver will play higher. Be sure to leave enough clearance for diaphragm movement and do not have too high compression ratio. Also distance between same taps has to be kept in 1/4 wavelength at highest frequency to get summation and act as one source. If you not fill this criteria no dsp settings will save you 🙂
Still want to stay on thread and not go offtopic. Plywood will be finished next week.
i get it
in the other hand
if Tom made you to sign a waiver of not disclosure and grant you to build the boxes from his original plans, but if you are not building from his original plans is not a clone and you are not stealing Tom's intellectual property or sharing classified information, so there is no reason not to share your DIY version unless you butchered an original and copied all the internal measurements and layout which is not the case right ?😜
The TH18 resembles the TH118 but not so close to be an intellectual property theft.
anyway
we are eagerly waiting for the CNC to finish and the BC cabinets to be assembled 😎
I will be very curious to see how this setup goes. I looked at building a pair of large horns for my own room for fun. I like the TH221 but not the floor space. Then there is the TH812 which would be fun but I would have to have a LOT of 12's and thats harder to do right now. Four 18's is a little easier.
I most likely would go with the 18SW115's but would love to purchase the IPAL 18's if they werent so expensive here in OZ.
I most likely would go with the 18SW115's but would love to purchase the IPAL 18's if they werent so expensive here in OZ.
how many you ordered from the CNC shop, i am eager to read your report on how they perform !!
🥳
🥳
Super!! Hey so those are arranged in a way that you see a complete hole in the center right ?
Each cabinet is like 1/4 of the mouth, so when you cluster the 4 cabinets you have one big A....mouth
Each cabinet is like 1/4 of the mouth, so when you cluster the 4 cabinets you have one big A....mouth
Yes, that is correct.
One thing to note is that not all 4 subs are identical. 2 are left and 2 right (symmetrical).
One thing to note is that not all 4 subs are identical. 2 are left and 2 right (symmetrical).
Very intresting progress 🙂
Finally someone goes as far as building a prototype.
I am curious about the first test measurements. When do you think you will get that far?
I will follow the process because we have something similar in mind modifying a BC design or atlest the old bDEAP to our needs as a DIY solution 🙂
Finally someone goes as far as building a prototype.
I am curious about the first test measurements. When do you think you will get that far?
I will follow the process because we have something similar in mind modifying a BC design or atlest the old bDEAP to our needs as a DIY solution 🙂
Cabinets will (hopefully) get built this weekend. Still waiting for 18Ipal and Ipalmod system from our local distributor, but we have a few 18SW115 available so we could test with it.
We would be happy to design something like 2x15 together (or what did you have in mind?) with 15SW115/DS115 or some similar high power driver. With some low frequency extension compromise for increased SPL, since in most use cases 30hz flat is not really needed.
We would be happy to design something like 2x15 together (or what did you have in mind?) with 15SW115/DS115 or some similar high power driver. With some low frequency extension compromise for increased SPL, since in most use cases 30hz flat is not really needed.