To automate polar and directional measurements
Turntables are a valuable part of the audio measurement set up for making directional measurements, spatial measurements, sound power measurements, VR leakage assessment, beamforming verification, noise cancellation and more. SoundCheck supports, and Listen provides several turntables from different manufacturers such as Portland Tool & Die, Brüel & Kjær, and Outline to match your testing requirements and budget.
Check out our Turntable Comparison Table for more information. All turntables here can be easily controlled from within SoundCheck.
The Portland Tool & Die MDT-4000
For most audio applications, the new Portland Tool & Die MDT-4000, available exclusively from Listen, is one of the most accurate and feature-filled turntables available. Designed specifically for audio measurements, it packs a host of usability and safety features, along with high precision and low maintenance in a compact and lightweight package.
The MDT-4000 offers a resolution of 0.1°, one of the most accurate on the market.
Easy Set-Up and Operation
The turntable has a built in level, along with 4 adjustable feet, making it quick to perfectly level and align equipment. Clearly visible degree markings provide quick visual confirmation of position and make it easy to align accessories with the turntable. Mounting holes at 3”, 9” and 15” diameter provide a variety of mounting options, and a center cable pass-through prevents tangling. The turntable retains position memory across power cycles, so the display remains synchronized with the actual position, even when the turntable is turned off.
Flexible control options
4 control options offer ultimate flexibility:
- USB – easy control for short distances
- RS232 for longer distances and backwards compatibility with LT360
- RestAPI provides long distance communication via LAN, enabling control via a webpage using a laptop or smartphone and enabling custom control applications to be written.
Full control from within SoundCheck (naturally!)
Silent at rest, and low-noise when rotating, it is ideal for audio applications. Variable torque enables slower rotation speeds to be used for quieter operation when measuring during rotation.
Packed with safety features
With emergency stop buttons on the front panel and in the software, plus an optional remote button for when the turntable is not within reach, your valuable products and instrumentation are protected. An automatic stall detection mechanism identifies if an obstruction is preventing the turntable from reaching its target position and both warns the user and stops the drive to prevent damage to equipment.
A maintenance-free worm drive requires no lubrication, making this turntable maintenance-free, an advantage when it is remotely located, for example in an anechoic chamber
Supports weights of up to 100kg in either compression or inverted orientation, making it suitable for the majority of audio applications. Weighing in at just 12kg, it is easy for one person to move around the laboratory.
The MDT-4000 is competitively priced with other turntables, and considerably less expensive than others offering the same advanced functionality.
5 - 20 Nm / 3.7 to 14.7 lb-ft
Speed of Rotation
Up to 3 RPM
clockwise or counter-clockwise
Max Axial Load (compression)
100 kg / 220 lb
Max Axial Load (upside-down)
100 kg / 220 lb
Max Radial Load
75 kg / 165 lb
Max Bending Moment
30 kgm / 66 lb-yd
maintenance free irreversible worm drive
Typical Idle Noise Level
Silent (<30 dBPa(A))
Typical Noise Level during Operation
External DC Power Input
12 – 30 V DC
90 – 264 V AC, 47 – 64 Hz (adaptor included)
100 mm /3.9″ (without feet)
437 mm / 17.2″
437 mm / 17.2″
Rotating disk / table plate diameter
400 mm/ 15.7″
50 mm/ 1.9″
12 kg/ 26.5 lb
Top Mounting Holes
8 x M6 on 80 mm / 3.14" diameter
8 x M6 on 228 mm / 8.97" diameter
8 x M6 on 380 mm / 14.96" diameter
Bottom Mounting Holes
4 x M10 on 274 mm / 10.78" diameter
Horizontal, Vertical, Upside-down
Center cable pass-through
Front panel buttons and touch screen
USB, RS232, LAN
Command sets supported
LT-360, LAN REST API
on front, remote option available
Integrated Chassis level
Adjustable leveling legs
38mm / 1.5" adjustment range