Info: Technical Article on Amplifiers and Cables

Arius · 27th September 2007, 09:06 PM

Sorry if this link has been posted before.

Below is a nice mult-part article on amplifiers and cables.

http://www.audiodesignline.com/GLOBA...2101992&pgno=2

(If link doesn't work, go to www.audiodesignline.com and read their latest newsletter).

One interesting note is an advisory stating that it is better to bi-wire your loudspeakers before spending big bucks on fancy cables. Most of us know this but it is nice to read some technical mumbo-jumbo about it.

nogoodboyo · 28th September 2007, 07:23 PM

Section 6.12 is complete nonsense.

Bob Cordell · 28th September 2007, 08:24 PM

Quote:

Originally posted by nogoodboyo
Section 6.12 is complete nonsense.

It would be more helpful if you would state specifically what it is that you take issue with. I'm all ears.

Cheers,
Bob

Conrad Hoffman · 28th September 2007, 08:43 PM

I do believe bi-wiring as described is beneficial, and for the reasons described, but I went to a tri-amp system long ago, and will try never to go back to passive crossovers. OTOH, the idea that any speaker wire has trouble passing 11 octaves of music, is IMO, nonsense. The article, like most popular articles, doesn't contain much to back up its claims.

nogoodboyo · 28th September 2007, 08:54 PM

It implies that the passive components in the crossover are intelligent and can ask the (intelligent) amp for special currents tailored to their frequencies. The amp is just pushing the same current through all the cables to the x-over where it get filtered to the speakers.

<<
The materials used for the conductors can influence the sound quality performance of loudspeaker cables, as can the materials used for the insulators.

The physical construction of a cable is also considered by many to be a significant factor in terms of sound quality, with some complex plaiting arrangements of the conductors being highly regarded by many specialists.
>>

oh god! not that old chestnut.

nogoodboyo · 28th September 2007, 09:31 PM

Also:

Writing "serious" articles and using phrases such as "it is widely accepted" and "being highly regarded by many specialists." is just bad form. They are fallacious arguments: Appeal To Widespread Belief.

Conrad said "doesn't contain much to back up its claims" -- it doesn't contain anything to back up it's claims -- no references at all.

And:

Just look at Figure 6.18 -- active filters are supposed to replace passive x-overs, yet they are still using them!

WOW! I am bored, I have had too much caffeine and I am ranting. At least it's the weekend.

nogoodboyo · 28th September 2007, 10:52 PM

Whoops -- please ignore my comment on Figure 6.18 above, I just re-read and realized what was happening in the diagram. My bad!

planet10 · 29th September 2007, 05:17 AM

Read parts 1 to 5 as well.

dave

27th September 2007, 09:06 PM	#1
Arius diyAudio Member Join Date: Mar 2004 Location: California	Info: Technical Article on Amplifiers and Cables Sorry if this link has been posted before. Below is a nice mult-part article on amplifiers and cables. http://www.audiodesignline.com/GLOBA...2101992&pgno=2 (If link doesn't work, go to www.audiodesignline.com and read their latest newsletter). One interesting note is an advisory stating that it is better to bi-wire your loudspeakers before spending big bucks on fancy cables. Most of us know this but it is nice to read some technical mumbo-jumbo about it.

29th September 2007, 05:17 AM	#8
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Read parts 1 to 5 as well. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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28th September 2007, 07:23 PM	#2
nogoodboyo diyAudio Member Join Date: Dec 2004 Location: SF Bay Area	Section 6.12 is complete nonsense.

28th September 2007, 08:43 PM	#4
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	I do believe bi-wiring as described is beneficial, and for the reasons described, but I went to a tri-amp system long ago, and will try never to go back to passive crossovers. OTOH, the idea that any speaker wire has trouble passing 11 octaves of music, is IMO, nonsense. The article, like most popular articles, doesn't contain much to back up its claims.

28th September 2007, 08:54 PM	#5
nogoodboyo diyAudio Member Join Date: Dec 2004 Location: SF Bay Area	It implies that the passive components in the crossover are intelligent and can ask the (intelligent) amp for special currents tailored to their frequencies. The amp is just pushing the same current through all the cables to the x-over where it get filtered to the speakers. << The materials used for the conductors can influence the sound quality performance of loudspeaker cables, as can the materials used for the insulators. The physical construction of a cable is also considered by many to be a significant factor in terms of sound quality, with some complex plaiting arrangements of the conductors being highly regarded by many specialists. >> oh god! not that old chestnut.

28th September 2007, 09:31 PM	#6
nogoodboyo diyAudio Member Join Date: Dec 2004 Location: SF Bay Area	Also: Writing "serious" articles and using phrases such as "it is widely accepted" and "being highly regarded by many specialists." is just bad form. They are fallacious arguments: Appeal To Widespread Belief. Conrad said "doesn't contain much to back up its claims" -- it doesn't contain anything to back up it's claims -- no references at all. And: Just look at Figure 6.18 -- active filters are supposed to replace passive x-overs, yet they are still using them! WOW! I am bored, I have had too much caffeine and I am ranting. At least it's the weekend.

28th September 2007, 10:52 PM	#7
nogoodboyo diyAudio Member Join Date: Dec 2004 Location: SF Bay Area	Whoops -- please ignore my comment on Figure 6.18 above, I just re-read and realized what was happening in the diagram. My bad!

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