Audiokit X3 12 "300W construction set

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Maksa halutessasi osissa tai laskulla

"Loistava palvelu ja tietämys asioista." - Pertti R.

"Suosittelen lämpimästi." - Leevi H.


SUB X3 Alu. Sound quality and performance! The X3 Alu subwoofer is a sturdy subwoofer that is suitable for even large main speakers and a slightly larger room. The speaker element is XXLS-12 Aluminum from Peerless's popular XXLS series. Since the goal was to get clearly more sound pressure than in the X2 Alu series, we placed the element in an 80-liter enclosure. The XXLS-12 also works in a smaller enclosure, but the long length of the reflex tube becomes a problem. In order to reduce the flow noises, the inside diameter of the pipe should be at least 103 mm. Since the excitation frequency should preferably be 20 Hz or even less, a pipe with a sufficiently large diameter can easily become impractically long. For this reason, we ended up with a slightly larger enclosure that provides a tube with an inside diameter of 103 mm. The housing volume in the example housing is about 80 liters and the excitation frequency is calculated to be about 24 Hz, but the damping agent entering the housing drops the excitation frequency to about 22 Hz. By increasing the tuning of the tube, it would be possible to further lower it, which would be an advantage in terms of sound quality. However, if you want to make a smaller housing, you should use a passive radiator instead of a tube.

For the kit, you can select the desired amplifier from two different HT-Amp D-class active modules. The HT-Amp 600.1 gives a continuous power of 300w, while the 1000.1 powers are 500w / rms. The smaller amplifier is used sparingly in smaller spaces. When you want to get the most out of the element, we definitely recommend the more robust 500w model! (NOTE! HT-Amp fixed 25Hz subsonic)

The XXLS-12 requires a lot. Because the cone is heavy, the current carrying capacity of the amplifier must be good. The X3 Alu model has an HT-Amp amplifier module that meets the requirements very well. Its current carrying capacity is excellent and the filters work as designed. The X3 Alu frequency response extends to 20 Hz. It is a subwoofer that meets the needs of even the most demanding enthusiast in terms of sound quality. X3 Alu is suitable for both movie sound and music playback.

The set includes the following parts for one (1 piece) speaker:

  • HT-Amp 600.1
  • Peerless XXLS-12 Aluminum 835017 bass element
  • screws
  • wires
  • gaskets


Reflex tube is not included in the package, we recommend eg JetSet 100 reflex tube

Housing dimensions:
- The internal volume of the case is approx. 80 liters
- External dimensions of the sample housing
(LxWxH) 460 x 460 x 568 mm
- Material 18 mm, front plate 25 mm.
- Reflex tube: Inner dia. 103 mm / minimum length 400 or JETSET 100. (TO BE PURCHASED SEPARATELY)


If you do not want to make the case yourself, you can order it ready-made. The pattern wood makes speaker cases from MDF or glulam according to the customer's wishes. The selection includes almost all the building kits sold by Hifitalo, and if necessary, you can also submit the speaker drawings yourself. See the link below for more information and prices.

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