Reed 5T Tonearm
Reed 5T Tonearm
Reed 5T Tonearm

5T Tonearm

Reed’s first tangential tonearm

2 Years




The 5T is Reed’s first appearance in the tangential tonearm domain. Featuring unique design, innovative technological solutions and high quality, and dedicated to a true audio passionate, it is one of the most advanced tonearms we have ever made.

Reed 5T technically is a tangentially tracking pivoted tonearm. It’s working principle is based on Thales’ theorem (if the centre of a triangle’s circumcircle lies on the triangle then the triangle is right, and the centre of its circumcircle lies on its hypotenuse) and the rule, that given three non-collinear points, it is possible to draw only one circle that has finite radius and passes through all three. (Fig. 1)

figure 1

  • P1, O1, P3 – Thales’ semicircle,
  • Angles P1-A1-P3, P1-A2-P3, P1-A3-P3 are 90 degrees each,
  • Segments A1B1 = A2B2= A3B3 represent length of a tonearm,
  • B – Tonearm vertical axis,
  • P2 represents a center of circle, drawn through three points – B1,B2 and B3 (tonearm rotation axis),
  • P3 – Linear Sensor Array,
  • BP3 – Laser beam.

The Armtube suspension system is similar to one used in the Reed 2G tonearm, and the tonearm’s turning part is based on low noise thrust-sleeve bearing. For the angular rotation of tonearm Reed designed and built limited rotation sectional torque motor. The tonearm’s position is controlled by laser and linear sensor array.

The 5T has a user-replaceable arm tube feature, which allows you to change tonearm’s effective mass yourself. The tonearm also has VTA and azimuth adjustments.

Reed 5T has the following advantages if compared with pivot tonearms:

  • Smaller moment of inertia,
  • No need for anti-skating mechanism,
  • Max tracking error is +/- 5 Minute of Angle (MOA). (Figure 2). Pivot tonearms usually have max tracking errors up to 1.5 deg.

absolute error tonearm 5Tfigure 2

Reed 5T’s advantages compared to other tangential tonearms:

  • Few times smaller moment of inertia
  • No need for complicated additional devices (air compressor)
  • Compact and sleek design
  • Effective mass in both the vertical and horizontal directions is similar

This tonearm is available in 3 difference length. 9”, 10.5” and 12”. The price quoted is for the 9” version. Contact us for prices for the other sizes.

Mounting distance
251 mm (platter diam.max.= 330 mm)

Tracking error
+/- 5 Minute of Angle (MOA)

Effective mass
8-16 g, depending on armwand material (replaceable armwand)

Height adjustment
compatible with 26÷46 mm height platters

VTA adjustment
precision +/- 0.2 mm

Azimuth adjustment
+/- 8 deg

Downforce range
10÷30 mN (cartridge mass 5.5 g – 19.5 g,(4.0 g – 25,0 g))

Limited rotation sectional torque linear motor

Direct 12 V, using battery power source Reed Source 12V