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Product Description

Perlisten S7i-LR THX Dominus certified in-wall speaker

The award-winning flagship S7t design adapted for THX Dominus Certified in-wall applications.


  • Enclosure Alignment: 4-way acoustic suspension
  • Driver complement: DPC Array: 28mm Beryllium, 28mm (2) Textreme TPCD; Woofers: 180mm (4) Textreme TPCD
  • Sensitivity: 91.9dB / 2.83V / 1.0m
  • Impedance: 4Ω nominal / 3.4Ω min
  • Response Linearity: 80 – 20kHz +/-1.5dB window
  • Frequency Response (-10dB): 45 – 37kHz
  • Typical In Room bass extension: 37Hz
  • Dimensions (HxWxD): 1036.6 x 298.6 x 111.2mm
  • Mounting Dimensions (HxWxD): 996 x 257 x 101.7mm
  • Weight: 26.4 kg
  • Recommended Amplifier Power: 100 – 600W RMS
  • SPL capability @1m (100-20kHz): 119.7dB peak; 117.0dB peak <3% 2nd, 3rd Harmonics
  • Certification: THX Dominus


Delivery & Returns


Touchstone AV are currently offering  FREE STANDARD DELIVERY to Mainland UK*. (Except for special delivery items, the price for these products will be shown during checkout)

We reserve the right to change our delivery charges as and when necessary. This does not affect your Statutory Rights.


Goods are normally dispatched within 48 hours following receipt of order and confirmed payment, please allow up to 5 working days for your goods to be delivered. If your order is likely to take any longer or is one of our special order items, one of our customer services representatives will contact you to let you know.


Touchstone AV want you to be completely satisfied with all purchases made from us. In the unlikely event that you would like to return any item to us, please refer  our refunds and returns section.

Customer Reviews

Perlisten Audio S7i-LR THX Dominus certified in-wall speaker