Turntables
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.
High Precision
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!)
Quiet operation
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.
Low maintenance
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
Right-sized
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.
Competitively priced
The MDT-4000 is competitively priced with other turntables, and considerably less expensive than others offering the same advanced functionality.
Specifications
Motion | |
Torque | 5 - 20 Nm / 3.7 to 14.7 lb-ft |
Angle Accuracy | 0.5° |
Step Resolution | 0.1° |
Speed of Rotation | Up to 3 RPM |
Direction | 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 |
Drive system | maintenance free irreversible worm drive |
Acoustic Noise | |
Typical Idle Noise Level | Silent (<30 dBPa(A)) |
Typical Noise Level during Operation | <50 dBPa(A) |
Power | |
External DC Power Input | 12 – 30 V DC |
Mains Supply | 90 – 264 V AC, 47 – 64 Hz (adaptor included) |
Physical | |
Height | 100 mm /3.9″ (without feet) |
Width | 437 mm / 17.2″ |
Depth | 437 mm / 17.2″ |
Rotating disk / table plate diameter | 400 mm/ 15.7″ |
Central bore | 50 mm/ 1.9″ |
Weight | 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 |
Mounting configurations | Horizontal, Vertical, Upside-down |
Markings | every 1° |
Center cable pass-through | Yes |
Control | |
Local | Front panel buttons and touch screen |
Remote | USB, RS232, LAN |
Command sets supported | LT-360, LAN REST API |
Safety | |
Emergency Stop | on front, remote option available |
Integrated Chassis level | Yes |
Adjustable leveling legs | 38mm / 1.5" adjustment range |
PT&D MDT-4000 | B&K TYPE 9640-A-001 | Outline ET-250R2-3D | Outline ET-50-3D | LinearX LT-360 | |
Photo | |||||
Cost | |||||
Motion | |||||
Torque | 5 - 20 Nm / 3.7 to 14.7 lb-ft | 5 - 20 Nm / 3.7 to 14.7 lb-ft | 250 Nm / 194 lb-ft | 50 Nm / 37 lb-ft | 100 Nm /74 lb-ft |
Step Resolution | 0.1° | 0.1° | 0.5° | 0.5° | <0.002° |
Speed of Rotation | Up to 3 RPM, programmable | Up to 3 RPM, programmable | 0.35 RPM | 1.75 RPM | 0.1 to 3 RPM, programmable |
Max Axial Load (compression) | 100 kg / 220 lb | 100 kg / 220 lb | 1000 kg /2200 lb | 200 kg / 440 lb | 450 kg / 1000 lb |
Max Axial Load (inverted) | 100 kg / 220 lb | 100 kg / 220 lb | 200 kg / 440 lb | 40 kg / 88 lb | n/a |
Max Radial Load | 75 kg / 165 lb | 75 kg / 165 lb | 250 kg / 550 lb | 250 kg / 550 lb | 136 kg /300 lb |
Max Bending Moment | 30 kgm / 66 lb-yd | 30 kgm / 66 lb-yd | 50 kgm / 110 lb-yd | 5 kgm / 11 lb-yd | n/a |
Acoustic Noise | |||||
Typical Idle Noise Level | silent (<30 dBPa(A)) | silent (<30 dBPa(A)) | silent | silent | silent |
Typical Noise Level during Operation | <50 dBPa(A) | <50 dBPa(A) | not specified | not specified | 50dBspl @ 2M, 1 RPM, ANSI-A Weighted |
Control | |||||
Local | Front panel buttons and touch screen | Front panel buttons and touch screen | Front panel buttons | Front panel buttons | Front panel buttons |
Remote | USB, RS232, LAN | USB, RS232, LAN | LAN, TTL pulse | LAN, TTL pulse | USB, RS-232, Analog |
Command sets supported | LT-360, LAN REST API | B&K Type 9640 legacy commands | Standard Ethernet Protocol | Standard Ethernet Protocol | LT-360 |
Safety | |||||
Emergency Stop | on front, remote option available | on front, remote option available | No | No | No |
Integrated Chassis level | Yes | Yes | No | No | No |
Adjustable leveling legs | 1.5" adjustment range | 1.5" adjustment range | No | No | No |
Physical | |||||
Height | 100 mm / 3.9″ (without feet) | 100 mm / 3.9″ (without feet) | 107 mm / 4.5″ | 107 mm / 4.5″ | 104 mm / 4.1" |
Width |
|
| 350 mm / 13.75″ | 350 mm / 13.75″ | 457 mm / 18.0" |
Depth | 437 mm / 17.2″ | 437 mm / 17.2″ | 455 mm / 17.875″ | 450 mm / 17.75″ | 457 mm / 18.0" |
Weight | 12 kg / 26.5 lb | 12 kg / 26.5 lb | 14.3 kg / 31.5 lb | 13.8 kg / 30.4 lb | 16 kg / 35 lb |
Rotating disk diameter |
|
| 350 mm / 13.75” | 350 mm / 13.75” | 406 mm / 16.0" |
Central bore | 50 mm / 1.9″ | 50 mm / 1.9″ | n/a | n/a | 38 mm /1.5" |
Top Mounting Holes | 8 x M6 on 80 mm / 3.14" Ø | 8 x M6 on 80 mm / 3.14" Ø | 1 x M20 at center | 8 x M8 on 244 mm / 9.6" Ø | 4 x 1/4-20 on 76.2 mm / 3" Ø 8 x 1/4-20 on 228 mm / 9" Ø 8 x 1/4-20 on 380 mm / 15" Ø mm |
Bottom Mounting Holes | 4 x M10 on 274 mm / 10.78" | 4 x M10 on 274 mm / 10.78" | 8 x M8 on 244 mm / 9.6" Ø (on chassis) 1 x M20 (for counterweight use only) | 8 x M8 on 244 mm / 9.6" Ø (on chassis) | 4 x 1/4-20 on 154.4 mm / 6" Ø 4 x 1/4-20 on 304.8 mm / 12" Ø |
Markings | every 1° | chassis zero | none | none | none |
Center cable pass-through | Yes | Yes | No | No | Yes |
Power Requirements | |||||
External DC Power Input | 12 – 30 V DC | 12 – 30 V DC | 50W, Universal PFC SMPS | ||
Mains Supply | 90 – 264 V AC, 47 – 64 Hz | 90 – 264 V AC, 47 – 64 Hz | 90-250 VAC – 50/60 Hz | 90-250 VAC – 50/60 Hz | 85-265VAC, 50/60Hz |
Data Sheet /More Information | n/a |