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

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In Reply to: RE: Tri-amping T IV-A's with tubes? posted by UncleMeat on January 12, 2025 at 14:44:43

On my T-IV the two bass panels are different. One is a 'low' panel, and the second one is a 'mid-bass' panel with tuned sections for the higher low frequencies. I'm not exactly sure how high the mid panel goes but it -could- be semi-full range (up to maybe 5kHz?) if a frequency sweep was done to determine it's properties. Putting my ear next to it while playing music tells me that there is -some- higher frequency sound coming out of it, but probably largely blocked out by the low pass crossover.
My thought/potential plan was to separate the two drivers by disconnecting the wires going to the mid-bass panel from the low-bass panel. That gives the option for powering them individually, which would set up a tri-amp if you kept the T-IV midrange/tweeter paired, or quad-amp if you split the mid/tweeter and amped them separately as well.

Edits: 01/13/25

Follow Ups:

RE: Tri-amping T IV-A's with tubes? - InfinityApogee 15:13:34 01/14/25 (1)
How can they be different when its a 3 way system?
- RE: Tri-amping T IV-A's with tubes? - UncleMeat 21:48:01 01/14/25 (0)
  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 on separate panels. 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.
  
  Edits: 01/14/25

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