Monday, 28 January 2013

My first Open baffle speaker

Post my arrival in Baroda in 2011 December, I read some papers, write ups on OBs and BLH and decided to try an OB first.

Following a friend, Dr Vikram in Goa, I opt for Ahuja speakers.

Soon, I bought Ahuja 12FRX of 8 ohm and two Ahuja tweeters with capacitor. I gave them to a cabinet makers suggested by Ahuja dealer.

All three party (including myself) got the interest of making something new. OB design is a complete new thing for both Ahuja dealer and the cabinet maker. I have opt for clothing the baffles both sides.
It cost me 5000 rupees including transport.
  I then played them at home.


They sound clear, open, real, spacious, powerful. I played my Cabasses just after that to compare. Yes, Ahujas lack finess but Cabasse can not give the open, clear mid. Even the bass from Cabasse is more than what I think is real.

Norah Jones, Roja, Hotel California (live), Sona Mahapatra, Dali's demo CD ... all of them came live (at least to me). I think one 12 inch has more presence than some 5 or 6 inches.
I am not an audiophile...I hear music and heard some good speakers recently. I heard some floor standaers and some few bookshelves. Floor standers were from JBL (2 and 3 ways), Mission, Bang and Oluffsens, Infinity, Klipsch, Jamos.
The best to me was Jamo R909 for home application.
I have two Cabasse Joursey, two Mission 702e, two Jamo 402 (I guess) for Floor Standers. My guage reference are them as immediate as it can be. And I always try to remember what I listen in other speakers. That Jamo R909 will always be in my ears.
To me, this OB with my Music Angel tube plays what I like. The tube with th Cabasse Joursey is also quite to my liking.

I want to thank Dr. Vikram for all his support. I did some basic calculation in Xvaffle excel and then followed writting in Enjoy the Music.com - High End Audiophile Audio Equipment and Music Reviews. The Absolute Sound, Superior Audio, hi-fi+ and Review Magazine and followed my mind.
Baffles are of 20" X 36" with two tapered wings starting from 1" to 8" and of 33" high. Baffle has an arc at the top. I also have a 4"x 9" plate on top of the Tweeter. I just thought it will be good. I have used MDF of 12 mm thick and used two plates per baffle to get 18mm thickness. They were bonded with Fevicol and some nails.

Bottom line, such DIY project gave me a lot of joy in reading, thinking, calculating, planning, executing and owning two good speakers. All of this for not so much money.
I will post photos pretty soon.

 

1 comment:

  1. Thanks for the details on your OB speakers. Looking forward to try it myself with a smaller driver though.

    ReplyDelete