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#390124 - 02/24/13 04:51 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mad_Chesser]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1279
Loc: Canada
Try try again...





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#390128 - 02/24/13 05:32 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mad_Chesser]
Mikesk Offline
frequent flier

Registered: 02/14/13
Posts: 18
I have a set of rti 10's with dual inputs and have pulled them out before to see how they subsequently hook into the crossover network.The bottom inputs go to the circuit board that handles the bottom end speakers and the top inputs go topside.Actually axiom mistakenly sent me a dual input manual with my m80's and reading between the lines if you pull the bridgeing bars you are effectively separating the top half of the speaker from the bottom half, that can then be powered with 2 separate power amps.Now if you have 2 amps each putting out 120 watts/ch it adds up to 240 going into the speaker in a bi or 2amp configuration.In a biamp configuration the axiom manual tells you to set the gain of each amp equal unless you want to alter the spectral balance, essentially saying the top and bottom of the speaker are now totally separated.So in a true biamp configuration you are splitting the speaker in half electronically and feeding the top and bottom half from 2 different amps. Hope this makes sense.

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#390130 - 02/24/13 05:45 PM Re: Customizing Axiom M80's(audio jewelry) [Re: brwsaw]
Mikesk Offline
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Registered: 02/14/13
Posts: 18
Thanks for posting these pics. That logo cast into the frame is a nice touch.In regards to cast vs stamped baskets one of the questions I asked Brent was if they were altering any of the cap values in the crossover when they put the cast basketed drivers in the m80...His answer was no so I went with the steel.

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#390131 - 02/24/13 06:13 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mikesk]
Mad_Chesser Offline
veteran

Registered: 01/11/13
Posts: 195
Loc: B.C., Canada
Originally Posted By: Mikesk
Thanks for posting these pics. That logo cast into the frame is a nice touch.In regards to cast vs stamped baskets one of the questions I asked Brent was if they were altering any of the cap values in the crossover when they put the cast basketed drivers in the m80...His answer was no so I went with the steel.


Yeah, I like the logo as well. I think im goimg to go with it. I always get nervous of altering anything from factory stock tho
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#390132 - 02/24/13 06:19 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mikesk]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7516
Loc: Canada
Originally Posted By: Mikesk
Now if you have 2 amps each putting out 120 watts/ch it adds up to 240 going into the speaker in a bi or 2amp configuration.

Being a pedant, I must point out that in this configuration you now have 240 amp available to the speaker. You need to turn it up to 11 to draw all 240 amps.

OTOH. If you buy an amp capable of delivering 240 watts per channel and hook it up in a non-biamped configuration, you are in exactly the same position. You can deliver 240 amps when you turn it up to 11. Put your earplugs in first (unless this is outside on a dock and you are sitting 40+ feet from the speakers grin ).

PS: if I were a true pedant, I'd point out that 240 watts at the amp will not turn into 240 watts at the speakers, but that's a whole other conversation.
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#390135 - 02/24/13 07:14 PM Re: Customizing Axiom M80's(audio jewelry) [Re: fredk]
Mikesk Offline
frequent flier

Registered: 02/14/13
Posts: 18
Originally Posted By: fredk
Originally Posted By: Mikesk
Now if you have 2 amps each putting out 120 watts/ch it adds up to 240 going into the speaker in a bi or 2amp configuration.

Being a pedant, I must point out that in this configuration you now have 240 amp available to the speaker. You need to turn it up to 11 to draw all 240 amps.

OTOH. If you buy an amp capable of delivering 240 watts per channel and hook it up in a non-biamped configuration, you are in exactly the same position. You can deliver 240 amps when you turn it up to 11. Put your earplugs in first (unless this is outside on a dock and you are sitting 40+ feet from the speakers grin ).

PS: if I were a true pedant, I'd point out that 240 watts at the amp will not turn into 240 watts at the speakers, but that's a whole other conversation.


You are correct.Thought my wordyness was already getting into too much detail. wink

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#390138 - 02/24/13 08:02 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mad_Chesser]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17924
Loc: NoVA
Thanks for the pics.

We've fought this biamping fight so many times now. If you tried to put 120W (or even probably 60W) into a tweeter, you'd have a very small smoking lump of metal.
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#390141 - 02/24/13 08:52 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Ken.C]
pmbuko Offline
shareholder in the making

Registered: 04/02/03
Posts: 16349
Loc: Leesburg, Virginia
FINE
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#390143 - 02/24/13 09:18 PM Re: Customizing Axiom M80's(audio jewelry) [Re: fredk]
dakkon Offline
connoisseur

Registered: 02/08/04
Posts: 1849
Originally Posted By: fredk

Being a pedant, I must point out that in this configuration you now have 240 amp available to the speaker. You need to turn it up to 11 to draw all 240 amps.



I just wanted to point out, the difference between watts and amps... Normal residential houses only have about 100 amp service... And that is for the ENTIRE house.... @ 120 volts, 240 watts will use 2 amps...

Below is a calculator to determine what is being used... I used 120 volts because that is wall outlet voltage in north america.

http://www.supercircuits.com/resources/tools/volts-watts-amps-converter


My 1200 watt amp only draws 10-15 amps at most, and hasn't yet as i hasn't tripped its 15amp breaker, yet...

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#390144 - 02/24/13 09:49 PM Re: Customizing Axiom M80's(audio jewelry) [Re: Mikesk]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10482
Any 2-way(or more)speaker has the high and low frequency sections separated at the latest when the signals enter the crossover. Using dual inputs with the connecting bar removed, the separation point is simply moved back from inside the enclosure to the output terminals of the receiver. This makes no electrical difference as to impedance or anything else of significance.

If two 120 watt amplifiers are connected to separate sections of a speaker, the maximum available to either section is 120 watts, not 240 watts.
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