Tony Gee's DD8 Mk-II

[LING GOWA]

Has anyone built this design? If so.. impressions?
The mid-woofer
The Seas L18RNX/P (H1142/H1224)
Isn't the H1224 different from the H1142?

http://www.humblehomemadehifi.com/DD8-MkII.html

[savage25xtreme]

that tweeter is one of my favorites! I love the way it sounds in my BAMTMs

H1212 for the win! :T

[LING GOWA]

that tweeter is one of my favorites! I love the way it sounds in my BAMTMs

H1212 for the win! :T

Nice job.

[Carrotman]

Isn't the H1224 different from the H1142?

Yes. If memory serves me, the 1224 has different cone profile and a much higher breakup node which means they're not really interchangeable. Probably not that much of an issue since I believe Seas stopped shipping the 1142 years ago.


/U.

[davey_m]

To me its seems like that design was done for the H1142 and not the H1224. The two are not interchangeable, although the web page may give that impression.

Zaph's has a design optimized for the H1224 and the same tweeter, and possibly a little more BSC.

[Juhazi]

make ER18DXT

Hi,
I made Zaph's L18 in 2007 and a week ago I revised the components to MarkK's ER18DXT http://www.audioheuristics.org/proje...XT/ER18DXT.htm
which I strongly recommend over DD8mk2 http://www.humblehomemadehifi.com/DD8-MkII.html or even Zaph http://www.zaphaudio.com/audio-speaker17.html

DD8 has LR2 at 2kHz topology with metal drivers and is prone to harsh sound due to cone resonances and not-so-good power response. Zaph L18 is better (LR4) and ER again better than that, LR2 with paper cone (reed)

Juha (zi)