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    Martin Logan Vantage Amp board

    Thanks Jonathan, got it! Btw: my Cambridge Audio N851 has also symmetric outputs - could I just bypass the tube amp for the bass section and go directly into the Crown? The tube amp is connected via the RCA plugs of the N851...
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    Philipp from Germany, ML Spire

    Oh wow, this is a nice piece of woodworking, I am impressed, this is perfect work - are you giving classes? :) I will post a pic as soon as I pull it out of the garage storage - I just got myself an Arbortech Turboplane to level the bench surface (to which I wasn't nice as a boy...)
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    Martin Logan Vantage Amp board

    Hi Jonathan, thanks very much for your reply. I am still hoping to get the crossover board fixed now that ML supplied me with the schematics, but your option with the Audio Control will be the next one. Could I somehow split the signal only for the bass driver and let the mid/high frequencies...
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    Philipp from Germany, ML Spire

    Thanks very much Brad! Oh nice, I am about to start restorating my great grandfathers woodworking bench. Are you building own furniture as well?
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    Philipp from Germany, ML Spire

    Thanks very much - the image from Orion's nebula (Messier 42) is indeed natural color, mainly dominated by the H-alpha emission, while the Rosetta nebula is in the so called Hubble palette based on narrow band data. To be honest, I have 8 scopes and 5 astro cameras - it is somehow the same...
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    Philipp from Germany, ML Spire

    Thanks Kernel - I only do furniture so far, no Hifi yet - but who knows :)
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    Martin Logan Vantage Amp board

    Hi Jonathan, I just ran over your post on the substitution of the internal bass amp by an external system, such as the Crown XLS1002. I have a similar issue here with my Spires, the crossover board is defective and ML does not have the boards on stock anymore. I (think I) understand your...
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    Philipp from Germany, ML Spire

    Thanks Brad, more than happy to show your guys a couple of pics. A selection can be found here Philipp Weller's gallery Two of the most recent ones are attached :) Cheers, Philipp
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    Defective power board in Spires - what are my options?

    Thanks for you reply - good to know that it is the crossover board, I was indeed struggling to find the exact type. In terms of potential loose wires - as I wrote above, I already exchanged the stack of the crossover board and the amp board with the one from the functional speaker and everything...
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    Defective power board in Spires - what are my options?

    Dear all, I hope this is the right forum section: I have an issue with one of my ML Spires: the ESL panel is working, however, the bass driver remains silent (or more precisely, hums and plops in a low level noise). I have replaced the Icepower amp board with a new one, the issue remains. I...
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    Philipp from Germany, ML Spire

    Dear all, thanks for accepting me here in the MLO forum! I am 48 yrs old and from Bad Dürkheim, Rhineland-Palatine, Germany, where I live with my very tolerant wife (related to my expensive passions audio, astrophotography and woodworking) and our 4 shelter dogs. My audio chain consists of a...
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