Description
Included in this kit
This bundle includes a Hertz SP-4.500 D-Class 4 Channel Amplifier 125 W RMS x 4 at 2Ω, and 2x Hertz HEX-65-S-LD-SW 6.5" 4Ω Coax with RGB LEDs Silver White Sport Grille.
1x Hertz SP-4.500 D-Class 4 Channel Amplifier 125 W RMS x 4 at 2Ω (SP-4.500)
SP 4.500 features Hertz ADC (Advanced D-Class) output stage, reaching up to 85% efficiency and delivering an impressive power rating of 90 x 4 (4Ω) W RMS or 300 W x 2 (4Ω) W RMS when bridged, with an ultra-compact size of 192.7 (7.58) x 130 (5.1) mm (in.) x 49 (1.9). Being ultra-compact with impressive power, SP 4.500 is the ideal choice for Motorcycle applications and for under-seat in sports cars and behind-seat installations in trucks.
General Specs
Channels: 4 - 3 - 2
Nominal power supply voltage: 11 ÷ 15 VDC
Pulse Operating voltage: 6 ÷ 16 VDC
Idling current: 0.9 A
Idling current when off: 0.03 mA
Consumption @ 14.4 VDC, MIN load impedance (Max Musical Power): 27 A
Remote IN: 6 ÷ 15 VDC (9 mA)
DC-REM - Remote Turn on by SPK DC from OUTPUT BTL speakers: 3.5 ÷ 7 VDC
Distortion - THD @ 1 kHz, 4Ω, 70% Rated Power: <0.02%
Damping factor @ 1 kHz, 4Ω, 2 VRMS: >150
Bandwidth @ -3 dB: 10 Hz ÷ 35 kHz
S/N ratio (A weighted @ 1 V Input): 100 dBA
Pre-In sensitivity: 0.6 ÷ 6 VRMS
Speaker-In sensitivity: 2.2 ÷ 22 VRMS
Minimum load impedance:
@ 4Ch: 2Ω
@ 3Ch: 2Ω + 2Ω + 4Ω
@ 2Ch: 4Ω
IP Rating: IP55
Operating Temperature Range: 0°C (32°F) to 55°C (131°F)
Max size (mm/inch): 192.7 x 130 x 49 / 7.58 x 4.18 x 1.9
Weight (kg/lbs): 2.15 / 4.74
Adjustable Crossovers: yes
2x Hertz HEX-65-S-LD-SW 6.5" 4Ω Coax with RGB LEDs Silver White Sport Grille (HEX-65-S-LD-SW)
Hertz HEX 6.5 S-LD-SW SPORT LED 6.5" Marine Coaxial Speakers (Silver White)
The Hertz HEX 6.5 S-LD-SW SPORT LED marine coaxial speaker features a sleek Silver White SPORT grille with integrated RGB LED lighting, combining modern styling with reliable marine-grade performance. Designed and rigorously tested for open-water use, it delivers detailed, dynamic sound while complementing your boat’s aesthetic.
With a compact 6.5-inch design and shallow mounting profile, the HEX 6.5 S-LD-SW is engineered for versatile installations without sacrificing audio performance.
Marine Certification & Protection
- Hertz Pure Marine Certified Product
- IP65 Protection Grade
- ASTM-D4329 UV Resistance Standard
- ASTM-B117 Salt Fog Operability Standard
- Sealed built-in crossover with resettable solid-state tweeter protection circuit
Design & Engineering
- 165mm (6.5") SPORT LED Coaxial Speaker
- Silver White SPORT Grille with RGB LED Lighting
- Removable and Paintable Grille for Custom Finishes
- Sound-Transparent Mesh Grille with Twist-and-Lock System
- High Efficiency Tweeter Optimized via FEM Simulation for Off-Axis Emission
- 25mm (1") Woofer Voice Coil with Silicone-Insulated Lead Wire
- Polypropylene Cone with UV Inhibitors
- PEI Tweeter Dome with Neodymium Magnet
- High Density Flux Ferrite Woofer Magnet
Performance Highlights
- 50W Continuous Power Handling
- 100W Peak Power Handling
- 4 Ohm Impedance
- Frequency Response: 50 Hz – 23 kHz
- 88 dB Sensitivity
- Shallow Mounting Depth: 85 mm (3.25")
Technical Specifications
| Component | SPORT LED COAX |
| Size | 165 mm (6.5") |
| Power Handling (Continuous) | 50 W |
| Power Handling (Peak) | 100 W |
| Impedance | 4 Ω |
| Mounting Depth | 85 mm (3.25") |
| Tweeter Diaphragm | 24 mm (0.9") |
| Woofer Voice Coil Diameter | 25 mm (1") |
| Tweeter Voice Coil Diameter | 13 mm (0.5") |
| Frequency Response | 50 Hz – 23 kHz |
| Woofer Magnet Size (D x d x h) | 85 x 32 x 15 mm (3.35 x 1.26 x 0.59") |
| Tweeter Magnet Size (D x h) | 12.9 x 2 + 11 x 1.9 mm (0.51 x 0.08 + 0.43 x 0.07") |
| Woofer Magnet | High Density Flux Ferrite |
| Tweeter Magnet | Neodymium |
| Cone Material | Polypropylene with UV Inhibitors |
| Dome Material | PEI |
| Sensitivity (SPL) | 88 dB |
| Resonance Frequency (Fs) | 78 Hz |
| DC Resistance (Re) | 3.3 Ω |
| Inductance (Le) | 0.109 mH |
| Vas | 6.52 L |
| Mms | 13.5 g |
| Cms | 0.31 mm/N |
| BL | 4.8 T*m |
| Qts | 0.82 |
| Qes | 0.95 |
| Qms | 6.1 |