Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles Store Gallery Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

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
Closed Thread
 
Thread Tools Search this Thread
Old 19th November 2009, 05:37 PM   #7691
diyAudio Member
 
Join Date: Aug 2008
Quote:
Originally Posted by wicked1 View Post
I recently replaced about 2m of cable from some old cheap RCA's to new RCA's ...The difference is HUGE.



Good story! A+. Case closed.
 
Old 19th November 2009, 06:42 PM   #7692
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Hi,

Quote:
Originally Posted by wicked1 View Post
This thread is far too long to follow, but I noticed it just keeps on moving along..

I recently replaced about 2m of cable from some old cheap RCA's to new RCA's I built using some shielded guitar cable.. (so, 1/4" thick coax).

The difference is HUGE. Everyone notices. It's a much larger change than swapping different types of coupling caps.

If anyone is still questioning cables, they obviously haven't tried swapping them on their own systems. I don't see why this thread continues. If it's just cause everyone likes to hear themselves type, then keep on going, I guess!
Contacts do suffer from wear and tear and oxidize as well so replacing on old cinch for a new or just cleaning the old one with isopropyl should already make for an audible difference.

Add some "Tweak"* to the contact area and that too should reduce contact resistance.

*No idea if those little magic bottle are still on the market but that snake oil actually worked a treat.

Cheers,
__________________
Frank
 
Old 19th November 2009, 06:46 PM   #7693
Banned
 
Join Date: Nov 2005
Location: McKinney, TX
Quote:

*No idea if those little magic bottle are still on the market but that snake oil actually worked a treat.
If its not there are other contact enhancers that are at least the equal to it.
 
Old 19th November 2009, 07:35 PM   #7694
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 4
Quote:
Originally Posted by boconnor View Post
As I understand it "good" hearing is that a person's hearing loss does not exceed some specified db amount, for a specified frequency band. Of course hearing loss is also age related, so listening panels tend to not have many people over 50.
As the papers i pointed to earlier point out, the machaisms for spectral (FR) hearing and for time related hearing are 2 different physical mediums. So despite a fall-off in HF response as measured with FR test, the ability to distinguish time-smearing does not degrade anywhere near as quickly.

Training also can make a big difference in a persons ability to use both of these mechanisms.

All this plays a role in people being able to distinguish features that are often dismissed because "they are above the limit of human hearing" Turns out that is a much smaller time interval than previously thot. (ie <5uS)

dave
__________________
community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
 
Old 19th November 2009, 08:10 PM   #7695
fredex is offline fredex  New Zealand
diyAudio Member
 
Join Date: Jul 2005
Location: New Zealand
Quote:
Originally Posted by Steve Dunlap View Post
In my case, about 21mm.
For me it used to be 17.2mm
 
Old 19th November 2009, 08:11 PM   #7696
diyAudio Member
 
Steve Dunlap's Avatar
 
Join Date: Sep 2008
Location: Here
Quote:
*No idea if those little magic bottle are still on the market but that snake oil actually worked a treat.
They are.

Parts Express: Featured Categories
 
Old 19th November 2009, 08:32 PM   #7697
diyAudio Member
 
auplater's Avatar
 
Join Date: Apr 2005
Location: KyOhWVa tristate
Default cleaning wires

One wonders what rubbing alcohol (isopropanol) does to oxide layers on interconnects? Simply unplugging and reconnecting an interconnect may remove "oxides", but isopropanol won't.

Gold plated interconnects are immune to oxidation (at least if the gold is more than a couple of microns thick, and has a nickel underlayer (most decent ones do)) since gold oxides are thermodynamically unstable wrt elemental gold.

All the cramolin etc. contact enhancers do is prevent re-oxidation of contacts IF they are clean in the first place. To TRULY de-oxide a non precious metal surface (solder, nickel, chrome, silver, etc.) you need (usually) STRONG ACID solutions, and the deoxidized metal will only remain so for a very short time period unless protected by a subsequent layer of (wax, another metal, glue, plastic, pick your poison)

As for the esoteric arguments re: dielectric loss/absorption, electron pools, single crystal topologies, micro-diodes, or simply I hear a difference so something must be different, unless some sort of reference is made to the degree of the effect, what's the point of discussion? No one will ever agree if some sort of metric is not applied, and the subjectivists ABHOR metrics.

All those who bought a Sham Wow in the last month raise their hands...

John L.
__________________
"...His brain is squirming like a toad..." Jim Morrison

Last edited by auplater; 19th November 2009 at 08:35 PM.
 
Old 19th November 2009, 08:40 PM   #7698
rdf is online now rdf  Canada
diyAudio Member
 
rdf's Avatar
 
Join Date: Jun 2004
Location: the thermionic past
Quote:
Originally Posted by auplater View Post
No one will ever agree if some sort of metric is not applied, and the subjectivists ABHOR metrics.
While 'objectivists' apparently can't wrap their heads around the concept of airborne pollutants not related to oxidization or, heaven forbid, that the listener might cook or smoke. One wonders what magic they believes transpires when they clean their inside windows. Oxidized glass?
__________________
Blame the Manichaeists
 
Old 19th November 2009, 08:41 PM   #7699
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: North Carolina
Blog Entries: 4
Default DBTs & Wine

For those of you who think that the audio crowd are the only ones who have trouble with DBTs, here is a good read.

A Hint of Hype, A Taste of Illusion in the Wall Street Journal.

.
__________________
Take the Speaker Voltage Test!
 
Old 19th November 2009, 09:05 PM   #7700
godfrey is offline godfrey  South Africa
diyAudio Member
 
Join Date: Nov 2009
Location: Cape Town
Default Directionality? It's all up to Bob, I s'pose .....

Bob being the guy at "Snake Oyl R Us" that paints the arrows on.

Each day Bob sets himself down in front of a large box of cables, pulls them out one by one, paints on the arrows and tosses them back on the conveyor.

Sometimes Bob screws up and paints arrows both ways on the same cable.

Mr Oyl used to get mad at Bob when that happened. Then one day he realised he could just mark up the "rejects" an extra 30 percent and sell them as "special" bi-directional cables.

Sales have been brisk.
 

Closed Thread


Hide this!Advertise here!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 06:24 PM.

Page generated in 0.23293 seconds (66.23% PHP - 33.77% MySQL) with 11 queries

Copyright ©1999-2012 diyAudio