AR 4x woofer question

[ironlake]

I have a rubbing voice coil on my advent heritage speaker that cannot be centered and needs to be replaced. I appears to be an identical speaker to the ar 4x and xa. The ar store has these speakers with photos and if the speakers for the 4 are 8 ohm its a go. please let me know if the 4x woofers are 8 ohm and I will order one. thanks

[ligs]

I refurbished a pair of Advent Heritage last year. I seem to remember that the crossover point is around 3500 Hz. While I don't have the schematic for them I would venture a guess that Heritage is a 2.5 design meaning both woofers are operating in the bass. The lower woofer begins to rolloff at a lower frequency and only the upper woofer carries all the way to the crossover point and then hands over to the tweeter. I would buy another heritage woofer instead of going for an AR woofer. This is not a quality issue but a frequency matching issue.

[dynaco_dan]

I have a rubbing voice coil on my advent heritage speaker that cannot be centered and needs to be replaced. I appears to be an identical speaker to the ar 4x and xa. The ar store has these speakers with photos and if the speakers for the 4 are 8 ohm its a go. please let me know if the 4x woofers are 8 ohm and I will order one. thanks

Hi there

Have you had the woofer fully accessed for centering it?

If an Xacto type knife is used to partially cut around the dust dome but not completely, a spacer can be used to relocate it, maybe.

A toothpick of sorts can shim the voice coil for testing purposes, maybe.

Even, as a last resort, the spider can be carefully removed from the frame and then recenter the cone and re-glue.

Just my thought for today.