PureShape SB26

Specifications:
    Mounting Information:
    • Method: Baffle mounted using M4 screws
    • Rebate: 10 mm wide × 8 mm deep
    • Corners: 4 mm radius
    Recommended Mid-woofer:

      Directivity polar plot

      All measurements are real ones, performed with the ideal 25mm roundover return, taken at 1/24 resolution in a half-space presentation (±90°).

      Horizontal polar plot 23cm version: polar raw
      Vertical polar plot 23cm version: polar raw

      SPL

      The loading effect provides much greater sensitivity in the low end compared to direct radiation in the low end.

      SPL without EQ or crossover:

      SPL

      Distortion

      SPL Its loading capacity allows operation at very low frequencies. The radiation restriction, combined with the reactive loading effect, reduces the tweeter’s required excursion to achieve a given SPL after equalization to a flat response, leading to lower distortion.

      Intermodulation distortion (IMD) is also reduced, since both harmonic and intermodulation distortions are strongly linked to driver nonlinearities, which generally increase with diaphragm excursion.

      The driver becomes so efficient that most distortion components are buried in the measurement noise floor (around 0.01% here), making them effectively invisible on the 95 dB SPL distortion chart, making only a tiny rise in H3 visible.

      How it competes versus Direct Radiation (no WG)

      Direct radiation (no WG): Reshape WG

      Mounting

      We recommend a round-over return of around 25mm radius on each exposed side to eliminate midrange narrowing and beaming.

      Mounting is done with the baffle using M4 screws into a rebate 10 mm large, 8 mm high, with 4 mm radius corners.

      Users must remove the protective grille using a heat gun or by carefully following the method shown in the photos, gently pulling the grille off little by little.

      A paper ring can be added if you are afraid of applying too much pressure on the driver.

      The mounting operation is the sole responsibility of the client. AudioHorn cannot be held responsible for any damage.

      Then place the three centering pieces to align the tweeter. With the waveguide facing downward, keep the assembly well away from any metal objects, as the tweeter’s magnet is very strong and may attract them.

      Hold the tweeter securely while lowering it into its final position. Once it is correctly seated using the centering pieces, tighten the three supplied screws. Leave the centering pieces in place.

      PureShape rear
      PureShape rear
      PureShape rear