Home » Sponsored » Pi Speakers » Pictures
Re: Pictures [message #44462 is a reply to message #44441] Fri, 23 April 2004 09:37 Go to previous messageGo to next message
wasteh202 is currently offline  wasteh202
Messages: 137
Registered: May 2009
Master
Very nice !

I realize that you designed these speakers on your own. But, I am curious as to what you think the specs might be... especially the senstivity.

Re: Pictures [message #44477 is a reply to message #44462] Sat, 24 April 2004 00:26 Go to previous messageGo to next message
Adrian Mack is currently offline  Adrian Mack
Messages: 568
Registered: May 2009
Illuminati (1st Degree)
Starting at the 15" 2225H driver, it is 97db 1w/1m in its bass reflex box.

The midrange horn is about ~104.5db 1w/1m. The compresion driver HF horn is something like 109db or 110db 1w/1m, after top octave HF compensation, it is padded to 100db 1w/1m or so. The midrange horn is also going to be padded down to 100db 1w/1m - a passive crossover is used so I have to pad both subsystems. Crossover point is going to be about 1.8KHz or 2KHz.

Crossover between 15" 2225 and midrange horn is active at 300Hz, so it doesn't matter than the sensitivity of the 15" is a little bit lower, the gains are set and matched at the amplifier.

Lower F3 is 70Hz and it reaches to 16KHz on the top end. If the 2225 is replaced with a 2235 and the tuning altered a little bit, the low end F3 could easily reach 30Hz or 35Hz, but I didn't use that driver.

I'm using an Eminence Alpha 6 driver on the midrange horn and it works well, I optimized the midrange horn for this driver. The HF horns I used are JBL 2370's, although there's many different horns that could be used here, just like the compression driver. I used the P.Audio PA-D45 compression drivers, but theres a whole range that will work.

Quality [message #44485 is a reply to message #44460] Sun, 25 April 2004 01:20 Go to previous message
Mike.e is currently offline  Mike.e
Messages: 471
Registered: May 2009
Illuminati (1st Degree)
exactly,theres not a realistic measurement for quality and distortion for cameras.i noticed that my old DOLPHIN 2mp camera,i had to take pictures at MAXImum resolution then downsize them,or else they were a little distorted

my kodak 2mp,i dont need to

Cheers!

Previous Topic: T-shirts?
Next Topic: JBL drivers
Goto Forum:
  


Current Time: Tue Jun 11 00:57:13 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Smith & Larson Audio
Smith & Larson Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest