Stranica: 3/5.

Re: A few my DIY projects "J&N"

PostPostano: 06 srp 2017, 21:28
Postao/la jororaitchev
Mislim da je vrijeme da vam pokazati projekt za stražnjim zvučnicima;
Zvučnici su "SEAS" - Excel T25CF002-1 ", W18EX001-6,5"
Sve je ručno, nema stroja "CNC".
стойка1-.jpg
стойка1-.jpg (27.22 KiB) Pogledano 4730 put/a.

Re: A few my DIY projects "J&N"

PostPostano: 04 kol 2017, 20:45
Postao/la jororaitchev
I have an idea to make a new project to in the base there should be two 10" loudspeakers - just an idea. They look like animals, maybe dinosaurs, but important are 20Hz.

Re: A few my DIY projects "J&N"

PostPostano: 20 kol 2017, 08:58
Postao/la jororaitchev
J&N-001-1.jpg
J&N-001-1.jpg (12.8 KiB) Pogledano 3978 put/a.
And the original model will look like this;

Re: A few my DIY projects "J&N"

PostPostano: 09 lis 2017, 13:36
Postao/la jororaitchev
I am approaching to the measurement of the internal volume:
C.ko.jpg
C.ko.jpg (31.08 KiB) Pogledano 3597 put/a.
,
C-1ko.jpg
C-1ko.jpg (30.79 KiB) Pogledano 3597 put/a.
,
s-ko.jpg
s-ko.jpg (31.76 KiB) Pogledano 3597 put/a.
,
cs ko.jpg
cs ko.jpg (31.08 KiB) Pogledano 3597 put/a.



On the last picture,the red line is the waterline
w-Lko.JPG
w-Lko.JPG (33.52 KiB) Pogledano 3597 put/a.
, the vas of cabinet must be fill with water next to it / everything must be perfectly horizontally!/.
I measure the weight of the my vented inner construction - 3.5 kg.
-The amount of water is 42 l. in the box; 42-3,5= 38,5l, 4.5 l more than what's needed - what's next?
The problem is that my investor likes the vision of the column.The decrease in volume must occur inside the construction of the cabinet.This sends the project in a more initial phase,we have a new requirement for the project, another W18 EX001.

Let's assume that the density of MDF is 0.75 kg. of cubic decimeter/ average value by tables /. This is 75% of the actual reduced volume.
The reduced volume error is:
3.5 / 0.75 = 4.6 liters actual reduced volume, and the whole volume is 43-4.6 = 38.4 liters.
The total error of 39.6 liters is 1.2 liters or -3.1%.

Re: A few my DIY projects "J&N"

PostPostano: 13 pro 2017, 10:11
Postao/la Rade
kako računaš zapreminu kutije kad koristiš matrix . Meni se čini da su ti proračuni komplikovani jer matirx ima tendeciju da povećava zapreminu viđenu od zvučnika .

Re: A few my DIY projects "J&N"

PostPostano: 16 pro 2017, 21:56
Postao/la jororaitchev
Rade je napisao/la:kako računaš zapreminu kutije kad koristiš matrix . Meni se čini da su ti proračuni komplikovani jer matirx ima tendeciju da povećava zapreminu viđenu od zvučnika .


Nisam siguran da razumijem vaše pitanje.
U svom projektu pokazujem kako izračunavam volumen složenog tijela, bez obzira na veličinu. S pravim oblicima velikih stupaca, sve se svodi na jednostavnu geometriju i matematiku.Ne vidim problem ako napravite neki unutarnji rebrasti kabinet,
u pravim oblicima ne postoji problem za točan obračun - možda postoji jezična barijera, ako možete postaviti pitanje na engleskom jeziku / bolje u bugarskom- vic!/

Re: A few my DIY projects "J&N"

PostPostano: 19 pro 2017, 21:35
Postao/la zbotic
I think that he want to tell you that is not the same if you have matrix box or simply volume. Maybe he have a right because dynamicaly air pressure is not the same in both situation especialy if you have big speaker volume. There is a situation with turbulent air flow in matrix box.

Re: A few my DIY projects "J&N"

PostPostano: 22 pro 2017, 17:15
Postao/la jororaitchev
zbotic je napisao/la:I think that he want to tell you that is not the same if you have matrix box or simply volume. Maybe he have a right because dynamicaly air pressure is not the same in both situation especialy if you have big speaker volume. There is a situation with turbulent air flow in matrix box.


Od poštovanja prema forumu, pokušat ću objaviti moje mišljenje na hrvatskom jeziku, ispričavam se ako nisam govorio pravilno !Moj komentar bit će nakon 20. siječnja 2018. godine.
Sretan Božić! Sretna Nova godina!
Joro

Re: A few my DIY projects "J&N"

PostPostano: 23 pro 2017, 00:19
Postao/la toma
jako lipo

Re: A few my DIY projects "J&N"

PostPostano: 07 sij 2018, 15:34
Postao/la jororaitchev
zbotic je napisao/la:I think that he want to tell you that is not the same if you have matrix box or simply volume. Maybe he have a right because dynamicaly air pressure is not the same in both situation especialy if you have big speaker volume. There is a situation with turbulent air flow in matrix box.



That is exactly the case, but there is a particular situation.
In the construction of my cabinets I have chosen matrix ribbing because the meaning of this construction is in three basic aspects;
- Makes the construction of cabinets to bi silent
-Help as in the implementation of a complex construction
-You do not need to use a insulating material / wadding or other damping material/..............

Upravo je to , ali postoji određena situacija.
U izgradnji mojih ormarića izabrao sam matrični rebrenice jer je značenje ove konstrukcije u tri osnovna aspekta;
- Izrađuje ormariće kako bi utihnuo/čini konstrukciju kabineta "tiho", bez vlastitog zvuka/
- Pomaže izgradnji složenih konstrukcija, kao moje proekt.
- Ne treba koristiti izolacijski materijal / vata ili drugi prigušni materijal /