Electronic Crossover frequency values for 2-way speakers?

[Brit01]

I'm interested in setting up a bi-amp system to drive a pair of Kipsch F-1 2-way speakers.

Planning to use 2 power amps (1 for lower frequencies and other for higher) connected to an electronic crossover module.

Now I'm not sure how to set this up.

After I remove the bridge piece of the speaker terminals I connect the cables from the 2 power amps.

Now my question is how to set the frequency crossover points and does the speaker have an internal protection for out of range frequencies once the bridge is removed. ie for the high frequency connection; if the frequency range is too low (set on the electronic crossover) will it damage the tweeter or be filtered out within the speaker circuits?

[lineup]

You need no other crossover, than the Klipsch great passive x-over.
They are prepared for bi-amping.
http://www.klipsch.com/
http://www.klipsch.com/world/eu/en/p.../speakers.aspx

They have 2 crossovers inside.
One for the tweeter
One for the woofer.
They are both in your speaker box.

You just attach you 2 ( 4 power amplifiers for stereo ) amplifiers
to those speaker 4 terminal pins.

that's it

Enjoyful listening.

[PeteMcK]

Lineup, I think you're confusing bi-wiring (a waste of time) with bi-amping.

There's a good article on it here : http://sound.westhost.com/bi-amp.htm

[lineup]

Am I?
I posted the very same link, before you to my friend: Brit01
.. in another topic ( Rod Elliott bi-amp )

Now, if a speaker has got 4 terminals on EACH speaker,
they at least in my country call this: Bi-Amping Ready
This means you can connect 2 power amplifiers to each speaker.
Total 4.

As a matter of fact, my own regular floorstanding speakers has got this feature.
I dont think I have mistaken when I speak about bi-amping.

I agree with you, Pete .. biwire is nothing I would do or talk about .. not much use.
Better to get yourself some normally good speaker cables.
I mean, with enough copper diameter.
I mean nothing else with 'normally good speaker cables'.

Lineup

[breez]

Biamping with passive crossovers is really only halfway to real biamping. It's ok for commercial speakers if you have a spare amplifier, but it wouldn't be sensible to design for such a configuration.

[Brit01]

Thks guys.

2 power amps it will be. probably this Tuesday I'll be popping down to the audio shop to pick a pair up. Not 100% sure which ones yet.

The Europower A500 are looking promising right now, but going over my budget a little. I will have some trouble with the lady when I arrive home with the boxes!! or more so when the visa bill arrives!

There is an ugly model called Lexsen(LXA600) also, no info on the internet but they are more economical and have loads of power and the Alesis RA150.

Then later in the year and can research further into the electronic crossovers for an upgrade.


The guys in the audio shop still think I'm nuts, "these are only for bars and clubs, not for your house. They are too loud for your house!!" they kept saying. Think they were a little xenophobic also.

Besides that they know nothing about the specs, couldn't show me any manuals, what class amps, what tranformers they have, how to adapt the Jack/XLR fittings to RCA etc. Nothing, I mean useless.

But they are no other outlets that sell these. This is the downside of living in South America!

[Brit01]

There is also a smaller amp, really compact, the phonic MAX250.

This outputs just 60W per channel at 8 ohms but as I'm biamping maybe this will be sufficient for the sensitive Klipsch.
Haven't found any reviews for this model.

My living is only 5x3 meters and we only listen at low to moderate volumes.



Help

[PeteMcK]

"Now, if a speaker has got 4 terminals on EACH speaker,
they at least in my country call this: Bi-Amping Ready
This means you can connect 2 power amplifiers to each speaker"
- yeah, you can, but for proper bi-amping you need to remove the speaker level xovers and use a line level xover...

[Andy G]

Originally posted by lineup
Now, if a speaker has got 4 terminals on EACH speaker,
they at least in my country call this: Bi-Amping Ready
This means you can connect 2 power amplifiers to each speaker.
.

Lineup [/B]

do check first, just unscrew the terminal plate and check the top and bottom pairs are not connected somehow inside !!

very bad idea to wire up two amps without checking first, either this way or with a meter.