Planar Speaker Asylum

RE: Tri-amping T IV-A's with tubes?

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This Post Has Been Edited by the Author

Technically T-IV's are 4-way speakers, reduced by a 3-way crossover. The high-pass goes to a second 2-way crossover for the ribbon/tweeter, while the low-pass goes to two bass drivers. Those two bass drivers are 'tuned' to respond to the various frequencies in the low-pass signal, one does everything below 100Hz (or so) and the second one has 3 tuned sections that cover above 100Hz to ~5kHz.

Those bass drivers could be driven separately on single amps, doing a freq sweep would tell at what frequencies to set the crossover points/slopes at.

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