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RE: Neolith has posted Excel Spread Sheet for magnepan speakers

The power demands for the tweeter are not that great so the Lexicon is well built and well designed and should do well. You can also look at old multichannel Theta amps for the tweeters/mids. Driving the bass panels is a different issue. If you drive them in parallel you get a 2 ohm load and you can use them as a 2 ohm speaker with fine tuning of relative levels. wiring the bass panels in series you would not be able to make a single amping option with a simple crossover.

Before you give up on the renovated tweeters, see what they sound like when biamping and go to your friend's with the factory T 1D and try and compare the performance of the tweeters, They may be wired for 2 ohms but that does not mean they are necessarily done in that heavy a wire. But for your purposes in context of employing a supertweeter you are probably less concerned with the tweeter's high freq performance. You would want to see how well resolving they are for mid/tweeter use and decide where you want the crossover to be in order to spec the ribbon, You might need to buy a more expensive tweeter that can operate effectively down to 4-5 khz and can take a 1st order XO. Like this Aurum Cantus G1 https://www.parts-express.com/aurum-cantus-g1-ribbon-tweeter--276-420
Vs, using a supertweeter like this cheap ribbon https://www.parts-express.com/fountek-neocd10-ribbon-tweeter--296-701




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