Go Back   Home > Forums > Member Areas > The Lounge

The Lounge A place to talk about almost anything but politics and religion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 8th March 2013, 11:44 PM   #41
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
Quote:
Originally Posted by optimationman View Post

.................

I live at 2000 mtrs, thinner air have an effect on sound transfer? Looking to just add warmth, not reduce the highs or detail................
This is one of several Stereophile papers on loudspeakers at altitude.

Under Pressure: Loudspeakers at Altitude Further Experiments (previously unpublished) | Stereophile.com
__________________
Kevin
  Reply With Quote
Old 9th March 2013, 12:15 AM   #42
diyAudio Member
 
Join Date: Sep 2006
Location: West USA
The amps were originally design for JBL in the early 60's, as audio amps. I changed the driver stage load resistors from Caddock MP925s to some old Koolohm wirewound type. Now we are getting some where. I believe that I am now headed the right direction. More warmth without the loss of detail. Not sure about everyone else's system, but a resistor change is quite detectable. I also believe the room is a very big part of system response. The dyna's may be cool, but with the power of over 200 watts from 8 EL34s you can make the walls shake in this house. Lack of bass isn't and issue period. The wall/ceiling/floor coverings and tube traps allow room tuning and the coolness of the speakers can be altered through absorption and diffusion. I think many should consider the room as a component of the system that is easily modded and can dramatically affect the overall sound tone and soundstage. An accurate speaker should portray what is feed to it, warm or cool. I believe this is better that having a speaker that is only warm or cool. My opinion.
  Reply With Quote
Old 9th March 2013, 12:24 AM   #43
diyAudio Member
 
Join Date: Sep 2006
Location: West USA
Jay, could you bring your speaker to my place. I live in a remote area in the mountains of Nevada/Cal. No one around to share equipment with. Would be a great Idea, just not applicable. It would be great to have that opportunity and would broaden my experience. It would not however change what sound I would like to have.
  Reply With Quote
Old 9th March 2013, 04:20 PM   #44
diyAudio Member
 
Join Date: Sep 2006
Location: West USA
Speedskater, thanks for the link. What I read is that there is small deviations in the speaker response. Two interesting things. An upper end tilt, possibly adding to the brightness. However, an increase in upper bass which some here say would add to the warmth. Maybe offsetting!! I think that these effects has been completely made mute with the changing to the wirewound resistors. Listened last night for a couple of hours, and I believe this may have been at least a bullet(not the silver one) that has gotten the sound much closer to what I was hopping for. Much more warmth with very little loss in detail.
  Reply With Quote
Old 10th March 2013, 10:25 AM   #45
diyAudio Member
 
Join Date: Mar 2004
Location: At the output stage
Send a message via Yahoo to mr_push_pull
I see a lot of problems here.

1. looks like OP bought the speakers without hearing them, based on reviews and/or internet opinions. people have very differing definitions on warmth and detail and it's unrealistic to expect that it's easy to find two complete strangers that have the same definitions.

2. a lot of the usual "dogma". specialty resistors and caps etc. I should post a pic with the crossover of my Confidence 3's (a few times the price of the 1.3's when new). I think I counted more than 20 caps. Solens, nothing fancy. some are generic MKT/MKP and there's one tiny ceramic somewhere.

3. OP never tried EQ but knows for a fact that it is bad.

4. any speaker, and that includes the 1.3's has its limits. why does Dyna make the Evidence or Consequence line when the 1.3's are all there is? maybe it's all the 1.3's have to offer. I have listened to them in the past. they are detailed but with certain musical program they sound thin, boring, uninvolving, not musical. my first DIY speakers which cost me $300 in parts sounder better in some respects. no real soundstage, no detail but certainly better for music listening and not sound dissection.


Quote:
Originally Posted by optimationman View Post
but the string soundslike a hard pure tone without harmonics.
you are describing the typical Dynaudio sound. some call it accurate, some call it lifeless. some compensate for it with upstream electronics.

my guess? OP has fallen in a typical audiophile trap: buys equipment based on reviews and is going through a denial phase.
__________________
we all love a good ol' stereotype until it's against us
  Reply With Quote
Old 10th March 2013, 10:31 AM   #46
diyAudio Member
 
Join Date: Mar 2004
Location: At the output stage
Send a message via Yahoo to mr_push_pull
Quote:
Originally Posted by Speedskater View Post
This is one of several Stereophile papers on loudspeakers at altitude.

Under Pressure: Loudspeakers at Altitude Further Experiments (previously unpublished) | Stereophile.com
clutching at straws, IMO.
but, nevertheless, I have an audiophile Air Density Regenerator on sale for only $9999.

really, what you are hearing is the entry-mid level Dyna sound. and your tastes simply don't match it. can't comment on the upper level offerings as I haven't listened to them.

here's the Confidence 3 XO: http://photo.qip.ru/users/aspero2010...719/125446896/

the most basic caps, coils and resistors. you are deluding yourself thinking that a resistor in the amp is the problem. stop searching for the fix on online forums (hell, maybe I myself am full of it after all!) and better start shopping for new speakers, and only buy after auditioning in your room and setup.

LE: and one more thing. I haven't listened to those speakers and I'm speaking based on hear-say. the Sapphires seem to be something else. if I recall correctly the Stereophile review hinted about a sound differing from the typical Dynaudio one. I know people who heard them and said "these are something else". likely, they were talking about the typical "neutral" (note the quotes) Dynaudio sound which the Sapphires probably don't share.
__________________
we all love a good ol' stereotype until it's against us

Last edited by mr_push_pull; 10th March 2013 at 10:56 AM.
  Reply With Quote
Old 10th March 2013, 11:16 AM   #47
diyAudio Member
 
Join Date: Mar 2004
Location: At the output stage
Send a message via Yahoo to mr_push_pull
Quote:
Originally Posted by abraxalito View Post
IMD arises from opamps IME - especially in conjunction with digital stuff because that's putting out RF which opamps hate with a vengeance. I got a substantial lowering of my noise floor when I put a passive filter behind the I/V resistor of my NOS DAC. Only then did I learn first-hand what 'warmth' really means - it has led to a substantial improvement of tonality, especially on piano sustained notes.
Malcolm Hawksford talks about this in an interview. I have experienced it with a NOS TDA1543 + LM4542 output stage. and it's why I started taking all tweaking comments, especially when about DAC output stages with a grain of salt.
__________________
we all love a good ol' stereotype until it's against us
  Reply With Quote
Old 10th March 2013, 08:09 PM   #48
diyAudio Member
 
Join Date: Sep 2006
Location: West USA
mr_push_pull , Doing a lot of speculation here. Not worth a comment. My 1.3 don't have 20caps, but yes solens are there. Please don't speculate what has or hasn't been done or experienced. Nuff said.


As it turns out, I found what has been plaguing the system for some time. I have been working with fellow DIY memebers on a positive path and have Isolated a major contributor to the brightness. There is a high freq suppression cap/resistor set on each output transformer. The caps are 60 year old 1000pf ceramics which apparently have failed. I replaced them with the only caps I had available, 2000pf silver/mica. BINGO!
Yes, warmth is here to stay. I have to retune the room and have already removed some panels as they are no longer useful. I like the new sound, with rich mids THAT I LIKE!
That is what this is all about anyway.
  Reply With Quote
Old 10th March 2013, 09:05 PM   #49
diyAudio Member
 
Join Date: Mar 2004
Location: At the output stage
Send a message via Yahoo to mr_push_pull
Quote:
Originally Posted by optimationman View Post
mr_push_pull , Doing a lot of speculation here. Not worth a comment. My 1.3 don't have 20caps, but yes solens are there. Please don't speculate what has or hasn't been done or experienced. Nuff said.
right.
you are deluding yourself. I own $8000 Dynaudios that, btw, are simply better compared to your speakers which I listened to. guess what? pretty much the same Dynaudio house sound.
you have explicitly stated that you bought them w/o auditioning. wake up and smell the coffee. you just don't buy stuff w/o listening to it and then try to fix it. go to audio shows, hi-fi dealers, listen to stuff, borrow equipment, listen to it, buy what you like.
period.
__________________
we all love a good ol' stereotype until it's against us
  Reply With Quote
Old 11th March 2013, 10:06 AM   #50
diyAudio Member
 
Join Date: Feb 2009
Location: UK
Quote:
Originally Posted by optimationman View Post
I have been working with fellow DIY memebers on a positive path and have Isolated a major contributor to the brightness. There is a high freq suppression cap/resistor set on each output transformer. The caps are 60 year old 1000pf ceramics which apparently have failed. I replaced them with the only caps I had available, 2000pf silver/mica. BINGO!
Yes, warmth is here to stay.
Would that be the Zobel network at the amp output by any chance? There are real experts on DIYAudio, but in case no one else is commenting on it, the idea of this is to cancel out some of the reactance of the load, which might otherwise cause high frequency instability in amps which use feedback. If so, and the caps had failed, that might indeed have been causing audible problems. Maybe you have found your silver bullet!
  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


Similar Threads
Thread Thread Starter Forum Replies Last Post
I like this detail! lanchile Solid State 23 8th February 2011 07:45 PM
Inner detail, as opposed to? Sheldon Tubes / Valves 14 22nd January 2008 01:31 AM
How to tweak warmth to a power amp? rick57 Tubes / Valves 5 11th June 2006 01:39 AM
warmth in different tube types rick57 Tubes / Valves 16 11th July 2005 05:45 PM
Construction detail Mats J Multi-Way 13 12th January 2005 05:22 PM


New To Site? Need Help?

All times are GMT. The time now is 02:47 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