18W/8531G00 sealed vs ported, any experience?

[gmed]

Has anyone compared the 18W/8531G00 in sealed vs ported? Which do you prefer? Im debating whether I should have them ported vs sealed with a sub?

G

[Rick Craig]

Has anyone compared the 18W/8531G00 in sealed vs ported? Which do you prefer? Im debating whether I should have them ported vs sealed with a sub?

G

I've used it sealed for subwoofer use and it works very well with a -3db point around 55hz (.75 cubic ft.).

[Paul W]

I put them in a large enclosure intending to try them both ported and low-Q sealed (port plugged). After comparison, I also used them sealed with a sub. Excellent bass for their size.

[TacoD]

Like I said before, the designer of this woofer recommends 22l ported. I hate this kind of discussions, you can try both enclousers. The price of MDF isn't that high.

[gmed]

Taco, I appreciate you pointing out the PDF file, and it was very helpful, but there is no need for attacking.

[TacoD]

Sorry, but I did want to point out that you have to explore some things for yourself.

[Xmax BR]

Dears,

I would like to create a truly DIY hi-end speaker and I had some difficulty choosing the drivers.

This MID 18W/8531G00 can be considered TOP for a 3-way speaker?


My idea is to make a 3-way in configuration TMWW and I thought the following components:


Tweeter - Morel SUPREME130 Offset Dome

http://www.madisound.com/catalog/product_info.php?manufacturers_id=141&products_id=590

Mid - ??????? ops:
Please, any suggest?


Woofer - 2 x ScanSpeak 26W/4867T00

http://www.scan-speak.dk/datasheet/26w_4867t00.htm

Sorry for my bad English for write, but a read without problem.

Tks,

Renato - From Brazil

[TacoD]

I've used the Morel 110 (the non offset 130) from 1800 Hz and upwards, so a 7" mid is within reach. My experience with the 26W/8867T00 (the 8 ohm version) shows that this driver is also rather flexible, two of them would yield a sensitivity of ~90 dB/W/m (including bafflestep and estimated room gain). I would recommend to use 2X 26W/8867T00 in parallel instead of 2X 26W/4867T00 (parallel or series)

The 87 dB sensitivity of the 18W/8531G00 would be rather difficult to integrate. Due the bandpass filter in the XO you could yield somewhat more than this, but all in all I think you should look for a more sensitive mid driver. The 18W/4531G00, is more sensitive, however, than the impedance of your speaker could drop below 4 Ohm around the lower cross-over point.