Exciting new line of fullrange drivers from Feastrex - Page 152 - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > Feastrex

Feastrex Hand crafted speakers

Reply
 
Thread Tools Search this Thread
Old 20th March 2009, 01:25 PM   #1511
BTW is offline BTW
diyAudio Member
 
Join Date: Nov 2002
Location: Singapore
Quote:
Originally posted by bvan

In the DCX I'll dial back the missing bass with a 24db bump at 20hz. Volume control via DEQ. I'm guessing there could be some loss of low freq resolution by attenuating in the digital realm, and maybe excessive phase shift. It seems a better bet than using only the DCX and its inbuild dacs, or using passive components, or running D5nf unfiltered in OB. We'll see...)
Whatever electronic means you use to filter/flatten the curve.. etc.. Always reference back to the unloaded D5nf.... We have tried the D5nf with an electronic crossover to a subwoofer... It compromised the dynamics , details too much.. I didn't like the effect..

The better Feastrex implementations I've heard with subwoofers are ....... Feastrex in their recommended cabinets run fullrange and subs like the REL... rolled in at 40 Hz or so..

Have fun D5nf........
  Reply With Quote
Old 20th March 2009, 02:57 PM   #1512
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
TBH Chris, I was simply considering some generalised situations that regularly crop up in manufacturing as a whole, rather than anything exclusive to drivers, or to Feastrex. Anyway, I daresay you're right, on the charitability front.
  Reply With Quote
Old 20th March 2009, 03:00 PM   #1513
diyAudio Member
 
nicoch58's Avatar
 
Join Date: Oct 2004
HI BTW

yes is the only way , FR must run free ....

But in OB can be a problem ....the only hi-end alternative that I know http://www.borbelyaudio.com/eb1102215b.asp

as I have phono and amp ,sure are good , no caps on signal path

sorry the DEQ2496 work well, but are for midi hifi..
__________________
Sic58
  Reply With Quote
Old 20th March 2009, 04:09 PM   #1514
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
For what it's worth, I have previously posted curves of my D9nf's,
and if my experience is any indication, the D5's will be flatter than
those. All told, there's nothing particularly remarkable about the
frequency response curves of the Feastrex - they tend to resemble
those of similar high sensitivity cones. I don't think Feastrex has
anything in particular to hide, so I go with the charitable viewpoint.

Addressing another issue, the use of EQ and crossover filters can work
very well with these drivers, but getting the right sound is not a
trivial thing. You should be prepared for considerable trial and error
in finding the right characteristics, and for me they have been very
simple low Q curves.

  Reply With Quote
Old 20th March 2009, 08:36 PM   #1515
diyAudio Member
 
cdwitmer's Avatar
 
Join Date: Apr 2003
Location: Tokyo
Quote:
Originally posted by Scottmoose
. . . I daresay you're right, on the charitability front.
And I dare say that when it comes to charity you know of what you speak, given the many DIY audiophiles in your debt for the excellent enclosure designs you have helped make available -- not that you're one to keep a tally sheet about such things, of course. (I'm tempted to borrow a quote from Jesus about the left hand not knowing what the right hand is doing, except that in the context of DIY that might be misinterpreted to sound like I'm dissing your DIY skills . . . )

-- Chris
__________________
"Avoiding deportation from Japan for over a quarter century!"
  Reply With Quote
Old 20th March 2009, 09:18 PM   #1516
bvan is offline bvan  Denmark
diyAudio Member
 
Join Date: Apr 2006
Quote:
Originally posted by nicoch46
HI BTW


Hi nicoch,

Would you also consider DEQX for mid-fi applications only? If not, what do you see as the difference between the two units, used as I intend? cheers

B.
  Reply With Quote
Old 20th March 2009, 09:59 PM   #1517
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Quote:
Originally posted by cdwitmer
... (I'm tempted to borrow a quote from Jesus about the left hand not knowing what the right hand is doing, except that in the context of DIY that might be misinterpreted to sound like I'm dissing your DIY skills . . . )
It'd probably be deserved though -I'm not exactly God's gift to speaker design, and I'm learning all the time, thank goodness. Hasn't stopped me yet of course... I relate to the bloke on the cover here... (good album BTW)
Attached Images
File Type: jpg thomasdolby-thegoldenageofwireless-.jpg (45.6 KB, 397 views)
  Reply With Quote
Old 20th March 2009, 11:49 PM   #1518
dpaws is offline dpaws  United Kingdom
diyAudio Member
 
Join Date: Jan 2005
Location: Essex, UK
Quote:
Originally posted by bvan



Hi nicoch,

Would you also consider DEQX for mid-fi applications only?

B.
I'm not expert (and Guys, please chip in and correct me) but... as I understand it you can not boost a frequency digitally, you can only lower the volume of all those frequencies around it in order to create a relative peek. The way this seems to be done is to dispose of data bits, which also contain a load of information such as harmonics, spatial clues etc. I suppose its the same as an mp3 against a lossless recording. It's music, but somehow lacking its soul.

So, by using digital EQ you can effectively reduce the remaining frequncies to mp3 quality for the sake of a 12db "boost"....

It's importance depends on the ability of your system to resolve this extra information, hence the reference to "mid-fi". I'm happy with compressed radio streams and mp3's on my factory fitted car stereo, but play them on my (very good) hifi and they sound awful....

As far as I'm aware only dCs have got digital volume contol sorted... Help me out Guys!!! Romy... ???
  Reply With Quote
Old 21st March 2009, 12:43 AM   #1519
diyAudio Member
 
cdwitmer's Avatar
 
Join Date: Apr 2003
Location: Tokyo
I'm no expert on that subject but I would suggest that common sense dictates "less is more" when using equalization to correct frequency response anomalies. In the past I have used a combination of adjustments in both the digital domain and the analogue domain to get what I considered to be good results. Red Book CD can make for excellent listening but only when it is at its absolute best, and I would think twice before making the decision to do anything that would degrade the already borderline signal that you get from CD format recordings . . . one can't afford to drop very much from that signal before the effort becomes counterproductive. How far one can go will vary from one situation to another -- how good the rest of your system is, how good your ears are, the frequencies you're working on, etc.

Judicious use of analogue domain equalization can be a good thing . . .

-- Chris
__________________
"Avoiding deportation from Japan for over a quarter century!"
  Reply With Quote
Old 21st March 2009, 12:52 AM   #1520
diyAudio Member
 
nicoch58's Avatar
 
Join Date: Oct 2004
beringer is pro hardware not hiend psu -dac-clock-output stage are ......
__________________
Sic58
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 12:01 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2