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Speakers for low powered SET amps

71.50.22.13

Posted on November 23, 2015 at 11:50:32
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
Below, people are discussing speakers, What about wire to drive the speaker folks ???

Most high efficiency speaker implementations I see today are grossly mis-wired, and so, people revert to the use of 8 Watt amps, when a 2 Watt amp with proper wire, amp to crossover, crossover to drivers, will work wonders.

Golly, Mr. Bob Fulton ( and I, as his California representative ) had wire covered back in the early 80s!!

I spent three hours last night prepping 26 different lengths of 12 AWG cable, triple checking paralleled lengths ( I use Fulton's 57 1/8th inch increments ) for the up-coming ALTEC A-4 re-do of wire. Have 6 more lengths to prepare.

The MINIMUM amount of wire I will use between a crossover and a 15 inch woofer is TWO paralleled 12 AWG runs ( effectively 9 AWG ), PER TERMINAL, to get as good a transfer efficiency and sonics as affordable and possible. Got no jack for Siltech !! Between amp and crossover, in 2015, I parallel three to four 12 AWG runs of wire, depending upon length, three is OK for short runs.

My A-7s will use FIVE multiple lengths of 57 1/8th inches, which is 285.625 inches long, or 23.80 feet. At FOUR runs in PARALLEL, per polarity, that is 16 runs, or 380 feet of wire to construct a stereo pair of 23.8 feet cables. But, its effectively 6 AWG, yet due to small gauge ( 12 ), and silver content, it has better bandwidth than a single 6 AWG run. Fun.

I think MOST people miss the boat on high transfer efficiency, so they go to crummy 300B amps, and biamping with a different time constants through the two amps, and the MASKING of an active crossover, added needlessly to the chain.

Of course, I am ass/u/me ing the person KNOWS how to build a good triode SET, which is a big stretch from all I see and hear.

Enough of my rant. Have fun, I certainly DO !!

Jeff Medwin

 

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Phy-Hp, posted on November 23, 2015 at 17:14:27
GEO
Audiophile

Posts: 4749
Joined: April 7, 2000
Contributor
  Since:
September 9, 2000
No crossover. Single driver. Filtered phy-hp super tweeter.

 

RE: Speakers for low powered SET amps, posted on November 24, 2015 at 06:36:12
used-hifi
Audiophile

Posts: 1100
Location: Surprise AZ
Joined: March 18, 2003
Jeff ...must see these parallel connected 12's how would they do on a fulton p12 system?

 

RE: Speakers for low powered SET amps, posted on November 24, 2015 at 08:18:53
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
Similar to FMI / Fulton Brown ( or Gold ) speaker wire, copper stranded, silver plated, shallow twist. Main difference, teflon outer jacket. FMI's likely better, but NLA. Don't mess with it, I'd say.

Jeff

 

RE: Speakers for low powered SET amps, posted on November 24, 2015 at 09:25:20
used-hifi
Audiophile

Posts: 1100
Location: Surprise AZ
Joined: March 18, 2003
Hi jeff, did you know that teflon builds static charge...IMO not a good idea riding along with the music?!...but maybe i am wrong??



Lawrence

 

RE: Speakers for low powered SET amps, posted on November 24, 2015 at 11:26:38
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
What do "I" know??

Most people consider teflon to be an excellent insulation, perhaps the best possible Lawrence.

I don't know - OR care. I use it ! Have fun. Enjoy.

Jeff

 

RE: Speakers for low powered SET amps, posted on November 24, 2015 at 12:13:39
used-hifi
Audiophile

Posts: 1100
Location: Surprise AZ
Joined: March 18, 2003
I get that you use it...and if it works for you fine...just asking about it is all...


lets see some pix!!!

 

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