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  »  New  Macondo's Axioms: Horn-loaded acoustic systems..  A link to another thread....  Horn-Loaded Speakers Forum     120  562548  07-29-2007
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07-01-2022 Post does not mapped to Knowledge Tree
rowuk


Germany
Posts 412
Joined on 07-05-2012

Post #: 221
Post ID: 26824
Reply to: 26816
Freak of nature?
As I was not present during the magic moment of the Dunnoys (or Dannoys), I can not assume anything but considering the initial aftermath documented here, perhaps that "moment" had more to do with stars/sun/moon lining up, DPOLS for a week or a specific recording matching the demands of the playback.
I can't get it through my head that the Dunnoys can even be close to offering playback over a large selection of classical genres. Chamber music maybe.
I fully understand the desire for just wanting to be part of the audience instead of booking the hall, the musicians, the conductor, selling tickets.


Whenever I feel blue, I start breathing again.
07-30-2022 Post does not mapped to Knowledge Tree
N-set
Gdansk, Poland
Posts 572
Joined on 01-07-2006

Post #: 222
Post ID: 26841
Reply to: 26792
B2 problem
 N-set wrote:
Only yesterday I started to get some interesting results after tuning the UK crossovers. But still not near to the sound I'm getting from my electrostatic headphone setup. I assume my Dannoy setup is quite compromised: one of the original crossovers is probably dry and one speaker had little bass, B2's input crap is still not bypassed and it produces some distortion, in lieu of a better solution I'm using the C1 pre. I want to push it to a logical end: bypass B2 input commutators, make my own pre a la Anthony with 801A, treat Reds' surrounds with the UK gentleman's solution to soften them. We will see what happens then.

I finally bypassed the B2 input board, keeping the original input impedance (soldered 1.5k/25k resistors at the inpout). This didn't change the sound much so far and my main problem persisted - one amp channel is -15dB down at bass (at 60Hz). This is for sure the amp not the speakers. I thought it was the input crap but it is sth more serious. Any B2 specialists?



Cheers,
Jarek
STACORE
07-30-2022 Post does not mapped to Knowledge Tree
N-set
Gdansk, Poland
Posts 572
Joined on 01-07-2006

Post #: 223
Post ID: 26842
Reply to: 26841
Solved
It is not the amp but the Yamaha preamp that gives the problem. A good kick in my butt to finish the 801 pre a la Anthony.  Apologies for spamming.



Cheers,
Jarek
STACORE
08-02-2022 Post does not mapped to Knowledge Tree
N-set
Gdansk, Poland
Posts 572
Joined on 01-07-2006

Post #: 224
Post ID: 26847
Reply to: 26842
Bass for Dannoys?
After a provisional cleaning of my crappy Yamaha C2 preamp, I got +/- balanced bass and then made a bit of discovery: Changed the parallel R in the HF circuit of the UK crossover from 50R to 25R (and switched the xcover to the treble boost mode which did nothing). The motivation was to give more HF energy as the current listening space is hopelessly overdamped. This was an "a-ha! moment" ! Something started to appear. The sound is very different from a typical "audiophile sound", I sort of start to get the "different reference chart" thing as it's very much outside of the typical audio rooms. Musical, seductive with a bass I'd like to lick. It is still a far cry from the emotional involvement I'm getting with my electrostatic headphones and it is still "constipated" (forget big orchestras or opera at the moment). I'd like to try to break this barier and see what happens. One obvious direction is the preamp and I'm working on it. Another is getting a matching bass under 60Hz. Romy tried with AK151 with the Remedies but it didn't work. I was thinking of infinite baffles, two drivers per channel, reaching ~91dB. The only place I could eventually mount them is quite untypical -- hanging from the ceiling above the speakers. I'm fantasizing triangular manifolds with the openings firing towards the listening position. I have no experience with IB, so any comments welcome. Does this make sense? Romy have you tried your IB's with your Dannoys during "that event"?



Cheers,
Jarek
STACORE
08-14-2022 Post does not mapped to Knowledge Tree
N-set
Gdansk, Poland
Posts 572
Joined on 01-07-2006

Post #: 225
Post ID: 26862
Reply to: 26847
Bass for Dannoys cont.
After fantasizing about an infinite baffle, I calculated what kind of structure I'd have to build (in lieu of an attic/crawlspace) and this is an obvious no-go. A more practical idea is a sealed box with two parallel ScanSpeaks per channel. This should be just about enough to match the sensitivity of Dannoys. 40-41Hz boxes should be ok. I'm thinking of suspending them from the ceiling. The space is too small to put them on the floor as Dannoys are only about 2m apart and 2.4m to the listening spot. The ceiling position will give  a ceiling reinforcement plus chance to time align them on an arch (or actually a half-sphere). Your opinions, gentlemen?

Subwooferidea.jpg



Cheers,
Jarek
STACORE
08-14-2022 Post does not mapped to Knowledge Tree
mats
Chicago
Posts 85
Joined on 09-18-2005

Post #: 226
Post ID: 26863
Reply to: 26862
Good for you, Jarek
Sadly I have no experience with ceiling mounts, except at live venues…….. 
If it doesn’t work, you could stack them.  
Probably sound so good you’ll never turn on TV. 
But mostly I want to honor you for pursuing 
sound in your space. The Dannoys look fantastic,
and will no doubt bring you many sublime moments. What else matters?
-Mats


08-16-2022 Post does not mapped to Knowledge Tree
N-set
Gdansk, Poland
Posts 572
Joined on 01-07-2006

Post #: 227
Post ID: 26869
Reply to: 26863
Stacking
Thanks Mats! Stacking is one option but I'm counting on +3dB of the ceiling reinforcement. The plan is to cross somewhere around 60Hz



Cheers,
Jarek
STACORE
Page 12 of 12 (227 items) Select Pages:  « First ... « 8 9 10 11 12
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Macondo's Axioms: Horn-loaded acoustic systems..  A link to another thread....  Horn-Loaded Speakers Forum     120  562548  07-29-2007
  »  New  Dannoy 2021 Loudspeakers..  It?...  Audio For Dummies ™  Forum     18  12695  08-04-2021
  »  New  Bermuda Triangles of Audio..  Tannoy carton issues...  Playback Listening  Forum     5  4986  11-09-2021
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