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andyrlb
28-09-2023, 16:47
My Crusaders have 3 sets of binding posts ( tri wire )
But how do I connect 1 preamp to 3 power amps ?

Also does it matter if the 3 power amps are of different wattage?

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CageyH
28-09-2023, 17:41
Why would you want to?
One nice amp will do nicely.
andyrlb
28-09-2023, 17:42
Why would you want to?
One nice amp will do nicely.

Why not when I have 3 power amps ? [emoji16]


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CageyH
28-09-2023, 17:49
Because it won’t make any difference….
Got three sets of speaker cable?
CageyH
28-09-2023, 17:50
And how many preouts on the pre, and what connections do you have on the power amps?
I have four power amps, but only use one, and it is enough - A modulus 686.
andyrlb
28-09-2023, 17:51
Because it won’t make any difference….
Got three sets of speaker cable?

And more , if it makes no difference ( which I too believe btw ) then why do some speakers come with 3 pairs of binding posts ?!


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andyrlb
28-09-2023, 17:53
And how many preouts on the pre, and what connections do you have on the power amps?
I have four power amps, but only use one, and it is enough - A modulus 686.

That’s why I’m asking the question “ how is it done ? “


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CageyH
28-09-2023, 17:58
What are the power amps?
CageyH
28-09-2023, 17:58
And more , if it makes no difference ( which I too believe btw ) then why do some speakers come with 3 pairs of binding posts ?!


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To sell more equipment.
andyrlb
28-09-2023, 17:59
To sell more equipment.

Probably


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andyrlb
28-09-2023, 18:00
What are the power amps?

Exposure 4 dual
Exposure 4
Exposure 8


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Macca
28-09-2023, 18:03
My Crusaders have 3 sets of binding posts ( tri wire )
But how do I connect 1 preamp to 3 power amps ?

Also does it matter if the 3 power amps are of different wattage?

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https://i.ibb.co/7bbBcN9/splitter.jpg (https://imgbb.com/)

use the most powerful one for the bass
andyrlb
28-09-2023, 18:06
https://i.ibb.co/7bbBcN9/splitter.jpg (https://imgbb.com/)

use the most powerful one for the bass

That was what I thought if it is at all possible, most powerful for bass , next down for the mids then weakest for the treble.

And then buy new speakers coz I’ve blown them to bits [emoji1787]


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prestonchipfryer
29-09-2023, 07:59
I used RCA splitters to run from a Cyrus pre to Ruark Talismans using a Quad 405 to the tweeters and a Quad 909 to the bass. Very successfully and made a vast improvement than bi-wiring or just using either amp singly with links on the speakers.

Maybe do it that way for the bass and mid speakers and links for the tweeters.

Mark Grant supplied to two 5 metre RCA cables so I could place the amps next to the speakers.

Something like these for the pre-amp outs.

https://i.ibb.co/R4qHrpf/links.jpg (https://imgbb.com/)
andyrlb
29-09-2023, 08:23
I used RCA splitters to run from a Cyrus pre to Ruark Talismans using a Quad 405 to the tweeters and a Quad 909 to the bass. Very successfully and made a vast improvement than bi-wiring or just using either amp singly with links on the speakers.

Maybe do it that way for the bass and mid speakers and links for the tweeters.

Mark Grant supplied to two 5 metre RCA cables so I could place the amps next to the speakers.

Something like these for the pre-amp outs.

https://i.ibb.co/R4qHrpf/links.jpg (https://imgbb.com/)

I may well try that , cheers


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Lawrence001
29-09-2023, 08:28
Wattage is less of an issue than gain, they all need to have the same gain. Manufacturers will often make different models with the same gain but not always.

The more amps you take off an output the higher the chance of an impedance mismatch so you want a low impedance pre and high impedance power.

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Barry
29-09-2023, 12:38
Most power amps have a sufficiently high input impedance, and most preamp have a sufficiently low output impedance, that there should not be a problem driving the amplifiers in a tri-amp system.

It is only when you mix valve preamps with solid state power amps, where problems might occur as some valve preamps can have a high output impedance.
Lawrence001
30-09-2023, 07:33
This is true I should have said it's unlikely with all SS. Valve and passive pres should be avoided in this setup.

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