Two different speakers - Acoustic issue?

[Bavarian05]

Originally Posted by Kal Rubinson

Nope. One should never connect them to the same amp at the same time. What I am referring to is to connect shorting jumpers (+ to -) to the inputs on the speakers that are not connected to any amp. This will highly damp any sympathetic resonances in the larger drivers.

Interesting. I was not aware of this. Thank you.
I have a pair of silver Audioquest jumpers that I used when I previously ran Maggie's.
I will give it a shot.

[HedgeHog]

Originally Posted by Kal Rubinson

I usually short the terminals of the unused speakers to minimize their contributions.

Hmm, interesting...must give it a try. Thanks for the tip, Kal.

[BlueSky]

Originally Posted by Kal Rubinson

I usually short the terminals of the unused speakers to minimize their contributions.

I know this is an old thread but thought I'd add my own anectodal findings.

A friend had a pair of AR-3As that we thought he had a problem. We were physically moving the woofer cone in and out by hand to determine if the speaker was making any mechanical noise of its own. The woofer moved in and out rather easily and without much resistance.

Next, for some reason and I don't remember exactly why, we shorted the speaker's input terminals and then tried to manually manipulate the woofer. The woofer's cone would barely move and acted as if it had been glued in place. The same phenomenon can also be seen when using an old voltmeter with an analog meter in it. When set to volts or resistance, the pointer in the meter can be made to swing wildly when shaking the meter. Put the meter into the current function, the pointer nearly stops moving due to the fact that a shunt (near short) has been placed across the meter.

Remember that even though the voice coil/magnet assembly is used as a "motor", it can also be used as a generator by applying physical force to move the voice coil in and out of a magentic field thereby generating an electric current. Shorting a generator's ouput will impede movement.

This is also why, I believe, an amplifier with a very high dampening (damping?) factor can more ably control the unwanted movement of a speaker's cone.

[Royzak]

Some time ago when the Isobaric was Linn's top speaker, in their demonstrations they would play the large speaker for a while then bring in a single small Linn Kann to, as they said, show how detrimental even one small speaker could be on the sound quality.
It was even suggested that TVs.and telephones should be removed. Strange how this idea went out the window with the introduction of home cinema, and the chance to sell more speakers.

[Indytown]

Originally Posted by Bavarian05

Picked up a pair of black SF Venere 2.5 today.
We'll see...

Nice speakers.

How do the curtains help in room accoustics ?