Rack Mount Kit
19" rack mount kit for up to seven mini measuring amplifiers or accessories.
Filter Box
- dual channel or bridged mode (up to 170V/RMS)
- 2 channel 80kHz 8th order lowpass filter
- 2 channel -30dB attenuator with 6dB steps
- ultra flat passband +/-0.05dB to 40kHz
- high linearity at high levels
The filter box is the perfect accesory when measuring Class-D, PWM or Sigma-Delta digital modulator type output stage amplifiers. The stop band response is greater than 70dB at 250kHz. Switching noise is thus highly reduced. This ensures highly accurate in-band measurements of the amplifier. The attenuator enables high measuring levels even on very sensitive analyzer inputs. This makes the Filter Box the perfect and universal tool for amplifier measurements. All components of the Filter Box are hand selected in our company to ensure best performance and high accuracy.
Technical Specs:
| Mode | dual single or bridged mode |
| Max level single mode | 80VRMS / channel |
| Max level bridged mode | 170VRMS |
| Input Impedance | 900Ω / channel |
| Output Impedance | 300Ω / channel |
| Filter structure | 80kHz Lowpass Butterworth |
| Linearity | +/-0.05dB up to 40kHz |
Absorbers
Physical Lab is producing specialized absorbers for your demands. Contact us for details! More informations here soon!
NRT6-285-8A
- high sensitivity
- extended range
- no stray fields
- neodym underhung motor design
- excellent off-axis behaviour
- perfect for omnidirectional sources
- lightweight
| Technical Specs: | |
| Power capacity RMS(Pe) | 50 W |
| Nominal diameter : | 6 inch |
| Nominal impedance : | 8 ohms |
| Sensitivity (2,82V) : | 90 dB |
| Frequency range : | fo - 8 kHz |
| Cone material : | Paper |
| Surround material : | Foam |
| Voice coil wire composition : | Copper |
| Voice coil former material : | Kapton |
| Voice coil diameter : | 25,5 mm |
| Voice coil winding lenght : | 11,2 mm |
| Magnetic gap depth : | 13,0 mm |
| Net weight : | 0,480 kg |
| Thiele / Small parameters : | |
| Resonant frequency : | 53,5 Hz |
| Voice coil DC resistance : | 6,73 ohm |
| Qts : | 0,58 |
| Qms : | 7,00 |
| Qes : | 0,64 |
| Equivalent air volume Vas : | 22,50 L |
| Radiating piston area Sd : | 126,0 cm^2 |
| Compliance Cms : | 0,99 mm/N |
| Total mass Mms : | 9,00 g |
| BL product : | 5,75 Tm |
The NRT6-285-8A speaker is completely inherent shielded due to the magnetic
motor design. This driver is perfectly suited when low weight and high output is
needed. Please note that this driver has a MOQ of 1000 units. If you need more
information's please feel free to contact us.
Diffusors
Physical Lab can develop special diffusors for your demands. Contact us for details! More informations here soon!
