Changing Axiom M80 V2 crossover

W

WJGJ

Audiophyte
I may change my Axiom M80 V2 speaker crossovers to V4 crossovers. Has anyone experience with this? Advice? Thanks
 
Swerd

Swerd

Audioholic Spartan
More often than not, when a speaker manufacturer comes out with a different version of an existing speaker model, it's because a woofer, mid-range, or tweeter from the older version is no longer made or available. Any part of that driver, the frame, magnet/voice coil assembly, or cone may have changed, requiring a modified crossover.

Many speaker manufacturers would rather market this as "new and improved" rather than admit they were forced into changes by circumstances beyond their control.

I don't know if this applies to the Axiom M80 V2 vs. V4 or not. But you shouldn't assume it does not.
 
W

WJGJ

Audiophyte
Yes, I have contacted Axiom and it's okay. I posted the thread hoping to find someone who has experience doing this, because Axiom doesn't have an instruction sheet
 
W

WJGJ

Audiophyte
Yes, I have contacted Axiom and it's okay. I posted the thread hoping to find someone who has experience doing this, because Axiom doesn't have an instruction sheet
More often than not, when a speaker manufacturer comes out with a different version of an existing speaker model, it's because a woofer, mid-range, or tweeter from the older version is no longer made or available. Any part of that driver, the frame, magnet/voice coil assembly, or cone may have changed, requiring a modified crossover.

Many speaker manufacturers would rather market this as "new and improved" rather than admit they were forced into changes by circumstances beyond their control.

I don't know if this applies to the Axiom M80 V2 vs. V4 or not. But you shouldn't assume it does not.
Thanks for your reply. Axiom has already said the V4 crossover is more linear. I don't know if they have changed the speaker units. I should ask them
 
lovinthehd

lovinthehd

Audioholic Slumlord
Yes, I have contacted Axiom and it's okay. I posted the thread hoping to find someone who has experience doing this, because Axiom doesn't have an instruction sheet
If they say its fine I imagine they don't need you to change drivers as well (or was that part of the conversation?). Installing a crossover is fairly simple, tho as long as you keep track of driver connections. Hopefully they didn't glue the crossover board or otherwise make it hard to remove/install. Have you removed a driver to see what you might need to do to remove the crossover?
 
Swerd

Swerd

Audioholic Spartan
Thanks for your reply. Axiom has already said the V4 crossover is more linear. I don't know if they have changed the speaker units. I should ask them
If the V4 crossover is more linear (does that mean it creates a flatter frequency response curve?) and if it works with the drivers in your V2 speakers, then you should be good to go.

The M80 looks like it's a 3-way speaker with 2 woofers, 2 mid-range drivers, and 2 tweeters. It's 4 ohm impedance suggests each pair of identical drivers is wired in parallel. That means that one pair of wires (a plus wire & a minus wire) coming from the crossover board will branch to pair of parallel drivers.

As lovinthehd said, open up your V2, find the crossover board and make a simple sketch of where all the wires go. You should see at least 4 pairs of wires – they should be color coded or clearly marked. Write it all down or get photos if you can. One pair of wires goes to the terminals on the cabinet back, a second pair goes to the 2 woofers, a third pair goes to the mid-ranges, and the fourth pair goes to the tweeters. Don't remove anything until you are certain how the old board is hooked up.

Look at the new V4 board to find connection points for all those wires.

I'll stop here as the next steps depend on what you find inside, and exactly how you have to make the wire connections. Things will be easier if Axiom provides Quick Disconnect (QD) points on the board, drivers, and wiring. QD connectors snap together and look like these, but come in many colors, or without plastic insulation:
1581505086495.png
 
W

WJGJ

Audiophyte
If the V4 crossover is more linear (does that mean it creates a flatter frequency response curve?) and if it works with the drivers in your V2 speakers, then you should be good to go.

The M80 looks like it's a 3-way speaker with 2 woofers, 2 mid-range drivers, and 2 tweeters. It's 4 ohm impedance suggests each pair of identical drivers is wired in parallel. That means that one pair of wires (a plus wire & a minus wire) coming from the crossover board will branch to pair of parallel drivers.

As lovinthehd said, open up your V2, find the crossover board and make a simple sketch of where all the wires go. You should see at least 4 pairs of wires – they should be color coded or clearly marked. Write it all down or get photos if you can. One pair of wires goes to the terminals on the cabinet back, a second pair goes to the 2 woofers, a third pair goes to the mid-ranges, and the fourth pair goes to the tweeters. Don't remove anything until you are certain how the old board is hooked up.

Look at the new V4 board to find connection points for all those wires.

I'll stop here as the next steps depend on what you find inside, and exactly how you have to make the wire connections. Things will be easier if Axiom provides Quick Disconnect (QD) points on the board, drivers, and wiring. QD connectors snap together and look like these, but come in many colors, or without plastic insulation:
View attachment 34017
If the V4 crossover is more linear (does that mean it creates a flatter frequency response curve?) and if it works with the drivers in your V2 speakers, then you should be good to go.

The M80 looks like it's a 3-way speaker with 2 woofers, 2 mid-range drivers, and 2 tweeters. It's 4 ohm impedance suggests each pair of identical drivers is wired in parallel. That means that one pair of wires (a plus wire & a minus wire) coming from the crossover board will branch to pair of parallel drivers.

As lovinthehd said, open up your V2, find the crossover board and make a simple sketch of where all the wires go. You should see at least 4 pairs of wires – they should be color coded or clearly marked. Write it all down or get photos if you can. One pair of wires goes to the terminals on the cabinet back, a second pair goes to the 2 woofers, a third pair goes to the mid-ranges, and the fourth pair goes to the tweeters. Don't remove anything until you are certain how the old board is hooked up.

Look at the new V4 board to find connection points for all those wires.

I'll stop here as the next steps depend on what you find inside, and exactly how you have to make the wire connections. Things will be easier if Axiom provides Quick Disconnect (QD) points on the board, drivers, and wiring. QD connectors snap together and look like these, but come in many colors, or without plastic insulation:
View attachment 34017
Thanks to swerd and loveinhd for the good advice. I have removed the speakers and photographed the old V2 crossover. It's physically attached to the plastic input plate where the 5 way binding posts are located. Also I have removed the woofers, tweeters and mid-range speakers and noted the color coding. The speaker wires are soldered to the crossover, but connected to the speakers by QD connectors.
 
lovinthehd

lovinthehd

Audioholic Slumlord
Sounds like it should be easy enough to swap out then. Curious, what is your reason for swapping out crossovers specifically? What cost or is this something Axiom is providing?
 

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