Zu/APT50-V3 Tweeter Pair

APT-3_PairG2P-11.jpg
APT-3_PairG2P-10.jpg
APT-3_PairG2P-11.jpg
APT-3_PairG2P-10.jpg

Zu/APT50-V3 Tweeter Pair

from 59.00

Eminence APT50 (V3, which is current) matched pair. All our APT-50 drivers are purchased directly from Eminence. In addition to Eminence's great build we apply a West Systems G-flex epoxy fillet to the top plate/magnet junction to significantly improve sheer strength (+10x) and reduce and damp stress risers and resonance. We then test them for pass/fail and then pair all that pass. How tightly do each of the grades pair? See detail and traces below.

  • 1-3/8–18 thread (15/16" deep)
  • 8Ω (7.4Ω min at 6k, 6.5Ω DCr)
  • 104dB-SPL @ 1W,1m on axis using matching Zu lens.
  • 4,000~20,000Hz bandwidth using matching Zu lens.
  • 35W AES power handling within bandwidth.

[Eminence APT-50 Product Page for Complete Spec's]

Price Includes:

2x APT50-V3 tweeters (matched).
60-day satisfaction guarantee—we cover your return shipping.

Match Grade:
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  • Grade-2 PRIME (≈1% of matched sets) are about as perfect a match as you can get. Out of the thousands of these we have measured and matched over the years we have only gotten a Grade-2 Prime match a dozen times. See traces below for comparisons.
  • Grade-2 (≈15% of all matched sets). Pairs receiving this grade have nearly identical tone prints and dynamic behavior. Average nominal SPL difference between pair is zero.
  • Grade-1 (≈35% of all matched sets). Above average matching having nearly identical tone prints and dynamic behavior but allow for a few subtle divergence. Average nominal SPL difference between pair is 1/8dB.
  • Standard Grade (≈40% of all matched sets). "Standard" is still a pretty tightly matched pair but allows for a few points of divergence within the tone print matching process. Average nominal SPL difference between pairs is a very low 1/4dB.
  • ≈5% of the APT50 drivers do not pair to our Standard Grade level and are sold as singles.
  • ≈4% of the APT50 drivers do not pass our pass/fail tests and are destroyed and recycled.
Grade-2 Prime Pair SPL Differential (Zu/APT50-V3 Measured @ 110dB-SPL)

Grade-2 Prime Pair SPL Differential (Zu/APT50-V3 Measured @ 110dB-SPL)

Grade-2 Prime Pair Impulse Comparison (Zu/APT50-V3 Measured @ 110dB-SPL)

Grade-2 Prime Pair Impulse Comparison (Zu/APT50-V3 Measured @ 110dB-SPL)

Standard Grade Pair SPL Differential (Zu/APT50-V3 Measured @ 110dB-SPL)

Standard Grade Pair SPL Differential (Zu/APT50-V3 Measured @ 110dB-SPL)