forumpoweraudio.ro

nu pot fi comparate cele 2 proiecte, sunt in categorii diferite, si de performanta si de design

Stiu, dar poate ar fi o solutie acest sub pt cu camere mici.
Oricum pt camere eu zic sa folositi band-pas-uri, veti avea un bas excelent, sau bass-reflex, dar nu cu acelasi rezultat in subbas.

M-am apucat de 2 Subwoofere deja. Urati-mi noroc baieti.
Le voi face din MDF si cu difuri Selenium. Au nevoie de un amp. mai mare decat P. Audio dar sper sa mearga tare.


Pentru cei care vor sa faca cutia dar nu au un cutsheet i-l aveti aici:




Desigur pentru cei care vor merge la ateliere va fi mai folositor.



Nu voi folosi manere de Al sau ABS ci - am furat ideea de la Dynacrd - voi folosi manere "facute in cutie".

Succes, sa ne spui cum suna

O sa cam muncesti pe manere !

Can anyone recalculate the ports for 18Sound 18W800 driver please.

Thank you.

Regards
MarjanM

It looks like no modifications need to be made to the project for your driver

Hello MarjanM,

18Sound 18W800 is a very good driver.
It will perfom very well and this loudspeaker design it is apropiate for this speaker.
I didn't work with this model but I have a friend how use this model into an original F18PWH clone design.
Actually, he told me that it perfom better than EVX-180 ( original driver for F18PWH ).

In my opinion, I think that you must tune the loudspeaker a litle bit higher to be perfect for your 18 Sound speaker.
It is very easy.
Make the ports a litle bit shorter than our design .
47 cm will be perfect.

Pay attention at maximum power.
18W800 is rated only for 400w - cont. power. If you want to push very hard, set the limiter to limit hard the higher level than 500 ~ 600w rms.

And for LX60 from Beyma ??

Yes.

Beyma 18LX60 have similar parameters.
Anyway, will perform with very small diferences, but is not a problem.

Should be a problem only for drivers with Fs bigger than 42 ~ 45Hz ,
or QTS > 0,4.

Anyway, if you use an High pass filter at 30Hz ( 18dB/oct) it would be safer. Generaly speaking.
This Beyma driver is a very good driver, too, in the same performance level like Paudio C18-600, or 18Sound 18W800.

It is very hard to make comparations between brands, becouse this design sound very well with a lot of pro speaker. Off course, maybe will sound with small particular coloration, but this design it was made for pro-use.

Thank you very much guys

How much increase in sensitivity shoud i expect from this box comparing to a common Bas Reflex box?

Ragards.

MarjanM

P.S. I might come to Romania this year. There is one agency here offering 8 days "Dracula Tour" visiting Transilvania.

well, this design does not increase the spl in the subbass range (it behaves like a regular bassreflex below 50Hz) , the real gain is a little higher in frequency

above 50Hz it starts to gain directivity, thus inceasing the spl

the gain can be around 3-4db compared to the regular bassreflex

am o intrebare pt HP 18W ce modificari trebuie facute sau nu e bun diful pt acest "BOOMBOX"

se poate folosi si pt hp-18W

va trebui probabil schimbat putin acordajul

voi face cateva calcule si voi posta modificarile necesare

M-am tot uitat pe forum si nu sunt sigur de un lucru:
am inteles ca proiectul acesta de planar horn aduce un castig de 3-4 db fata de un BR clasic. In graficul prezentat de catre Dynacord se observa un castig de 6 dB. Concluzia este ca proiectul de aici coboara mai jos in schimb are un SPL mai scazut datorita amplasarii rezonatoarelor in exterior?