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GRS NRT25-8 1" Extended Range Driver 8 Ohm

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GRS
Part #272-250

GRS NRT25-8 1" Extended Range Driver 8 Ohm

GRS
Part #272-250  
Model: NRT25-8
6 Questions, 18 Answers or
The GRS NRT25-8, leveraging Neo-Radial Technology (NRT), delivers expansive, low-distortion sound from a compact 1" titanium diaphragm. Designed with the DIY enthusiast in mind, this driver features a small footprint perfect for array configurations, a high-force motor for controlled performance, and extensive venting that lowers the frequency range to 450Hz, offering a versatile spectrum of crossover possibilities for tailor-made audio solutions.
Key Features
  • Full-range, 1” underhung driver with 2.5 mm of Xmax
  • Neodymium Radial motor design for extremely low distortion
  • Extreme ventilation for great power handling and improved bass response
  • Small frame size for reduced center-to-center distance and reduced comb filtering when used in arrays
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Overview

GRS NRT25-8 1" Extended Range Driver 8 Ohm

GRS NRT25-8 1" Extended Range Driver 8 Ohm

NRT (Neo-Radial Technology) harnesses the power of radially aligned neodymium magnets to deliver high-fidelity audio through a uniformly magnetic field, ensuring superior speaker sensitivity and acoustic precision

Redefining Audio Performance

The GRS NRT25-8, leveraging Neo-Radial Technology (NRT), delivers expansive, low-distortion sound from a compact 1" titanium diaphragm. Designed with the DIY enthusiast in mind, this driver features a small footprint perfect for array configurations, a high-force motor for controlled performance, and extensive venting that lowers the frequency range to 250Hz, offering a versatile spectrum of crossover possibilities for tailor-made audio solutions.

1" Titanium Diaphragm

Prized for its exceptional stiffness-to-weight ratio; the rigidity of the titanium cone ensures minimal distortion, even at high output levels, while maintaining a clear and detailed sound across a wide frequency range.

NRT Neo-Radial Technology

A breakthrough in speaker design; this innovation results in exceptional linearity and a higher sensitivity in speaker output. The unique configuration allows for an increased excursion capability, providing deep, resonant bass and a broader dynamic range from a 1" driver

Extreme Ventilation

By allowing air to move freely behind the diaphragm, this ventilation method reduces air pressure build-up that can restrict the cone's movement, especially at lower frequencies. The result is a more natural and extended bass reproduction,

Frequency Response

Engineered for acoustic excellence, this speaker driver delivers a powerful bass response from a 1" driver that resonates with its depth and clarity. With a frequency sweet spot that extends from 250 Hz to a soaring 15 kHz, experience the brilliance of consistent, high-fidelity audio.

Specifications:

  • Impedance: 8 Ohms
  • Size: 1"
  • Cone Material: Titanium
  • Surround Material: Foam
  • Frequency Range: 250Hz - 15,000Hz
  • Sensitivity: 75.7dbSPL @ 2.83V/1m
  • Power Handling: 5W
  • Xmax: 2.5mm

Impedance Curve

The driver’s optimized impedance ensures that the speaker operates consistently across a wide spectrum of frequencies, revealing a perfect harmony between power and performance. This simplicity in impedance response translates to a simple crossover configuration with no need to accommodate for losses from electrical interactions.

Product Details

BrandGRS
ModelNRT25-8
Part Number272-250
UPC848864072494
Unit of MeasureEach
Weight0.15

Product Specifications

Nominal Diameter1"
Power Handling (RMS)5 Watts
Power Handling (MAX)10 Watts
Impedance8Ω
Frequency Response250-15,000Hz
Sensitivity75.7dB 2.83V/1m
Voice Coil Diameter0.787"

Thiele-Small Parameters

Resonant Frequency (Fs)380Hz
DC Resistance (Re)6.9Ω
Voice Coil Inductance (Le)0.08mH
Mechanical Q (Qms)2.41
Electromagnetic Q (Qes)2.9
Total Q (Qts)1.32
Compliance Equivalent Volume (Vas)0.0003ft³
Mechanical Compliance of Suspension (Cms)0.38mm/N
BL Product (BL)1.62T·m
Diaphragm Mass Inc. Airload (Mms)0.46g
Maximum Linear Excursion (Xmax)2.5mm
Surface Area of Cone (Sd)3.76cm²

Materials of Construction

Cone MaterialTitanium
Surround MaterialFoam

Mounting Information

Overall Outside Diameter1.53"
Baffle Cutout Diameter1.53"
Depth0.78"
# Mounting Holes4

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