The Hornshoppe Forum
May 25, 2019, 06:26:36 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: SMF - Just Installed!
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: Thinking loud  (Read 343 times)
tooppy
Jr. Member
**
Posts: 78


View Profile
« on: April 09, 2019, 10:09:39 AM »

Hi

While reading all the ESS great Heil's praises, I was thinking why not using these with one nice subwoofer only in one big box, heils sitting on top of the box.
This is because I have a nice pair of Beyma 12BR70  Shocked Shocked Shocked designed for closed box, the easiest DYI I know of.

http://www.usspeaker.com/beyma%2012BR70-1.htm

Now the Heil is 4 ohms/100db while the Beyma is 8 ohms/93db, so I guess the cross-over has to be a bit special, I say that because I am a complete electronic dummy, but I imagine a 1500hz cut off.
The box size recommended is 1.77 / 4.24 ft3, the bigger the better to me.

Would this setup fill my greedy request to have it all at low level, I mean very low that's being hardly heard from the next room at night. I never listen loud, any system could sound impressive once plaid loud, and I cannot anyway living in a flat.
I noticed the Japaneses are playing big huges JBL boxes into tiny rooms, that might be the trick to get "a lot of music all around at low levels" ; huge high sensitivity box with firstwatt philosophy amps into small room.

http://kenricksound.com/#index

All comments, drawings, links are welcome  Grin

Michel
Logged
Henry
Hero Member
*****
Posts: 920


View Profile
« Reply #1 on: April 09, 2019, 07:32:04 PM »

Hey Michel, ESS made a speaker with a large driver (10 in?) coupled with the Heil years ago and had issues with the low frequency driver being higher mass and sounding noticeably slower than the Heil.  That created problems with the two drivers overlapping seamlessly.  i see ESS has a modern version of the old speaker, so maybe they have addressed that issue.

Maybe Ed can offer some wisdom here...
Logged
sonic
Sr. Member
****
Posts: 416



View Profile
« Reply #2 on: April 10, 2019, 08:46:17 AM »

Regardless of bass driver or subwoofer's capability, if the room acoustic isn't taken care, you will be wasting your time and money.  In your case, it would be the use of bass traps.  It doesn't have to be this product but this site has good info on room acoustics.  There are plenty of diy options too.
Logged
tooppy
Jr. Member
**
Posts: 78


View Profile
« Reply #3 on: April 11, 2019, 12:44:46 PM »

Hey Michel, ESS made a speaker with a large driver (10 in?) coupled with the Heil years ago and had issues with the low frequency driver being higher mass and sounding noticeably slower than the Heil.  That created problems with the two drivers overlapping seamlessly.  i see ESS has a modern version of the old speaker, so maybe they have addressed that issue.

Maybe Ed can offer some wisdom here...

Henry, thanks, I didn't know that story, wait and see if Ed has any comment on this.
Logged
Steve F
Sr. Member
****
Posts: 432


View Profile Email
« Reply #4 on: April 14, 2019, 12:33:48 AM »

Henry is correct.
The reason Ed’s design works well is the very low mms of the Fostex driver. Even most eight inch drivers really won’t match up well. You need a midrange.
Logged
Ed Schilling
Administrator
Hero Member
*****
Posts: 1368


View Profile Email
« Reply #5 on: April 16, 2019, 10:35:07 PM »

Steve, hope your foot is better. Steve is correct as to my thinking........the efficiency of the pair also is damn near perfect. Another factor is the "bass driver" is a full range unit. This allows the series xover because of the extreme overlap the drivers have. A lot of stars aligned for the pairing to work as well as it does.
Ed
Logged
tooppy
Jr. Member
**
Posts: 78


View Profile
« Reply #6 on: April 28, 2019, 02:31:06 PM »

Have you heard these flat drivers which pair with the Heil ?

http://www.sibatech.co.jp/fal/index.html

http://www.sibatech.co.jp/fal/Drivers.pdf

A Japanese old man is building these:

https://www.youtube.com/watch?v=TLSVbpMjnDQ
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!