Home » Audio » Speaker » OTOH - The case for horns...
OTOH - The case for horns... [message #16692] Mon, 12 July 2004 05:13 Go to next message
wunhuanglo is currently offline  wunhuanglo
Messages: 912
Registered: May 2009
Illuminati (2nd Degree)
Last night, as things are wont to happen, I kept playing more stuff louder and louder.

Things were really impressive (to me) toward the end of "Flim & The BBs -Big Notes", when they kind of pull out all the stops. The recorded levels go way up (the VU meters were peaking) and the bass was fantastic.

In fact I was really happy until I heard the Fostexes going "crinkle-crunch". 1mm of Xmax ain't what it used to be, even at 97 dB/W.

No damage done, but now I'm thinking there's an MTM arangement in my future.

Or arrays [message #16693 is a reply to message #16692] Mon, 12 July 2004 06:14 Go to previous messageGo to next message
Bill Fitzmaurice is currently offline  Bill Fitzmaurice
Messages: 335
Registered: May 2009
Grand Master
I watched 'Lord of the Rings/Return of the King' the other night and the SPL was peaking around 115dB. It sounded so good that the wife didn't even complain. This using 87 cent 4 inch drivers in my mains, and they have only a millimeter XMax. But I've got eight of them per side.

Re: Or arrays [message #16699 is a reply to message #16693] Mon, 12 July 2004 18:15 Go to previous messageGo to next message
wunhuanglo is currently offline  wunhuanglo
Messages: 912
Registered: May 2009
Illuminati (2nd Degree)
Are those the Part's Express close-out drivers? Seems like a lot of experimentation is going on with those.

I did have an alternative thought driving to work this morning - I'll see how a higher crossover point works - maybe take some of the load of the mids.

I'm afraid what might happen if I start contemplating arrays next...

Re: Or arrays [message #16707 is a reply to message #16699] Tue, 13 July 2004 06:49 Go to previous messageGo to next message
Bill Fitzmaurice is currently offline  Bill Fitzmaurice
Messages: 335
Registered: May 2009
Grand Master

Yes, total cost $60 for the pair including the lumber.

Well, see, that's not exactly what I meant.... [message #16712 is a reply to message #16707] Tue, 13 July 2004 11:03 Go to previous messageGo to next message
wunhuanglo is currently offline  wunhuanglo
Messages: 912
Registered: May 2009
Illuminati (2nd Degree)
I could multiply $0.87 by 8 and get something less than $10 ;)

You are in the professional ranks now, which means that you've acquired the ability to look at these things somewhat dispassionately.

On the other hand, I’m a life long obsessive-compulsive with tendencies toward audiophilia nervosa. Consequently, refocusing on arrays could lead to rather negative financial consequences.

For some, this is a hobby; for me, it's closer to a sickness.


But it should be... [message #16713 is a reply to message #16712] Tue, 13 July 2004 13:31 Go to previous messageGo to next message
Bill Fitzmaurice is currently offline  Bill Fitzmaurice
Messages: 335
Registered: May 2009
Grand Master
when you consider what a pair of arrays can do for a build price less than that of a single Fostex driver. The main advantage to DIY is how good a sound you can get for, in this case, peanuts. Plus: no complaint over size from the wife, which is worth at least ten times the speaker cost. BTW, I built these as my personal HT speakers to get something that could match the SPL of my newest horn-loaded sub. My prior speakers had been in place since 1993, the ones before than I built in 1978, so I'm not exactly prone to changing them a lot. On the other hand I seldom get more than three years at best from my electric bass rig before I tire of it and come up with something better.

Re: Or arrays [message #16727 is a reply to message #16693] Sun, 18 July 2004 05:42 Go to previous messageGo to next message
mollecon is currently offline  mollecon
Messages: 203
Registered: May 2009
Master
Quote:"It sounded so good that the wife didn't even complain."

Are you sure the poor woman still have her full hearing ability? After all, she did spent a lot of time with you... ;-)

Btw., where did you get those cheapo 4" drivers, and what brand are they? Same with the HF-units...

What amp are you using for surround?

Re: Or arrays [message #16728 is a reply to message #16727] Sun, 18 July 2004 10:06 Go to previous message
Bill Fitzmaurice is currently offline  Bill Fitzmaurice
Messages: 335
Registered: May 2009
Grand Master
Those drivers came from Parts Express, both the midwoofs and tweeters. I think they still have some. Check in their specials listing. They're shielded Chinese drivers; some batches have Pioneer logo. The tweeters are Onkyo auto sound, they have a post for coaxial mounting on an auto driver that you chop off. I used 8 midwoofs per side as I can run 4 ohms no problem, and the 38" TL length is fine for the Fc of 100 Hz. If you need 8 ohms you can go with 16 drivers, but with an Fs of 105Hz you still won't get below 80 Hz, so you'll need a sub in either case.

I use three homebuilt stereo amps for the mains and surrounds and a plate amp on my sub.



Previous Topic: Moth Audio
Next Topic: Do bass horn flares have to be absolutely airtight?
Goto Forum:
  


Current Time: Tue Sep 03 08:25:50 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest