Impotence Question


Now that I have your attention...my question is about impedance matching in speaker selectors. I have a Bryston 3-way speaker switch box, which does not have impedance matching/balancing. As far as I understand it is a simple three-way switch box with minimal signal path to travel. It has three on/off buttons which operate independently from each other. So I was curious what exactly happens when I switch my 100 watt amp to drive two pairs of 8-ohm monitors simultaneously (yes, besides the fact that both sets of speakers are playing)? Are there sacrifices in performance, and are those sacrifices linear or do they show up in different ways for each pair of speakers? It does not occur to me to drop the volume significantly in one pair of speakers when engaging the second pair which are downstairs, though I imagine this must happen as it's splitting the output of one amp between two pairs of speakers. So what is going on, and how does it differ from a selector which compensates for impedance? I think Niles actually terms their system "Impedance Protection".

Marco
jax2

Showing 6 responses by jax2

Viridian - you slay me! Don't mind if i do:

Tripper - calm down dude...you haven't called 911 yet have you? No tubes in this system...this is really my WAF system and I'd certainly admit there are a few compromises. Nevertheless, it sounds purty damn good. 100 watt integrated (Portal Panache). 25 foot run of 14ga downstairs if you must know. Tara cables to the mains..bi-wired. But I swear, I cannot hear any difference in volume engaging the second pair of speakers. Weird...that's what I would've thought too. What gives there? Upstairs Silverline SR17s, downstairs Soliloquy SAT5's. Respectively 89db and 87db sensitivities at 8ohms.

Any further insight?

Really, no need to panic. Nothing happening here folks...go on home now....nuthin' ta'see here now, break it up now....go'on, git!

Marco
I think the Who's dude was cranking his tunes pretty loud too:

Well the kids don't eat
And the dog can't sleep
There's no escape from the music
In the whole damn street

...or maybe tuning his crank?

I do have three full systems and I do believe my wife would leave me if I were to assemble another. The kitchen just doesn't have room for a dedicated system installed, which is why the switchbox and the long run.

Marco
Did'nt I read somewhere that bacon grease makes for a good contact enhancer? If I did that "Strange Fruit" camo'd 4th system hanging from the ceiling like you suggest, it would soon become an audio-pinata when my wife found out what was inside. I can just see the rectifiers and plastic pineapple parts flying about the room once that broom handle starts swinging! I'll keep my cap at three systems and work the switchbox angle so I can take part in more of that squeezebox playing at night!

Marco
Actually, I carry the big stick. My S.O. does not speak all that softly. I prefer
the box I live in to cardboard, but I like my wife's squeeze-box best of all,
though i can't live there. I do enjoy the visits though. I'd like to use the same
contact enhancer as Fabio does on his Krell gear, but I CAN believe it's
definitely NOT butter, so I'll stick with the bacon grease instead. I got yer'
fruit salad right here my friend...numero uno y dos. Do you know what kind
of underware Fabio wears? Bet he carries a bit stick too? Boxers? Left side or
right? Bet Fabio doesn't have any swtichboxes at home, or dangling fruit
basket pinata stereo systems! Speaking of which, I heard that Kevin Deal over
at Upscale came out with a hanging fruitbasket system that'll knock your
socks off. There are two versions, both made over there in the former
People's Republic so they're as affordable as a pair of boxers! Actually the
same factory also produces boxers with pictures of tropical fruit on'em that
are so cheap the workers actually pay you to take a pair! The Prima Frutta
hanging fruitbasket systems were a hit with Stereophile who've given them
class B status. There are several aftermarket mod guru's here in the States as
well as in Canada that are authorized to do the mods on those babies,
replacing all the caps with audiophile grade, as well as replacing the plastic
oranges and apples with superior European plastic fruit. The $900 mod takes
the units into class A, while the $1400 gets you a real wicker basket and
additional garnish bringing the baskets into what Art Dudley termed as
"...nothing short of fruitopia!...Blows away fruit basket systems ten
times more expensive...The fruit looks so real you'll want to eat 'em, but
don't; they'll make you sick!"

Marco
Looks like Apple computers have taken a clue from the Audiophile community for once! Check out their new edition of the iPod!!!

Marco
Are you from the land down under Joe? Cause I think you must be speaking some of that Aussie slang now. Just the thought of an 'accordian' is like to make me crack-a-fat...at least on a good day!

Marco