Hertz SP 4.900

--> <div class="product-block product-description float-start w-100">SP 4.900 is the first Hertz amplifier featuring the renewed <strong>Hertz ADC (Advanced D-Class)</strong> output stage, reaching up to 85% efficiency and delivering an impressive power rating of <strong>160 x 4 (4Ω) W RMS</strong> <strong>or</strong> <strong>500 W x 2 (4Ω) W RMS</strong> when bridged, with an ultra-compact size of 211.6 (8.3) x 130 (5.1) mm (in.). Being ultra-compact with impressive power, SP 4.900 is the ideal choice for Motorcycle application and for under-seat in sports cars and behind-seat installations in trucks.</div> <h4><span style="color: #ff6600;">Technical Specs</span></h4> <table class="table caption-top"> <tbody> <tr> <td><strong>Channels</strong></td> <td>4 – 3 – 2</td> </tr> <tr> <td><strong>Nominal power supply voltage</strong></td> <td>11 ÷ 15 VDC</td> </tr> <tr> <td><strong>Pulse Operating voltage</strong></td> <td>6 ÷ 16 VDC</td> </tr> <tr> <td><strong>Idling current</strong></td> <td>1.1 A</td> </tr> <tr> <td><strong>Idling current when off</strong></td> <td>0.03 mA</td> </tr> <tr> <td><strong>Consumption @ 14.4 VDC, MIN load impedance (Max Musical Power)</strong></td> <td>50 A</td> </tr> <tr> <td><strong>Remote IN</strong></td> <td>6 ÷ 15 VDC (9 mA)</td> </tr> <tr> <td><strong>DC-REM – Remote Turn on by SPK DC from OUTPUT BTL speakers</strong></td> <td>3.5 ÷ 7 VDC</td> </tr> <tr> <td><strong>Distortion – THD @ 1 kHz, 4Ω, 70% Rated Power</strong></td> <td>0.02%</td> </tr> <tr> <td><strong>Damping factor @ 1 kHz, 4Ω, 2 VRMS</strong></td> <td>200</td> </tr> <tr> <td><strong>Bandwidth @ -3 dB</strong></td> <td>10 Hz ÷35 kHz</td> </tr> <tr> <td><strong>S/N ratio (A weighted @ 1 V Input)</strong></td> <td>105 dBA</td> </tr> <tr> <td><strong>Pre-In sensitivity</strong></td> <td>0.6 ÷ 6 VRMS</td> </tr> <tr> <td><strong>Speaker-In sensitivity</strong></td> <td>2.2 ÷ 22 VRMS</td> </tr> <tr> <td><strong>Minimum load impedance:</strong></td> <td></td> </tr> <tr> <td>@ 4Ch</td> <td>2Ω</td> </tr> <tr> <td>@ 3Ch</td> <td>2Ω 2Ω 4Ω</td> </tr> <tr> <td>@ 2Ch</td> <td>4Ω</td> </tr> <tr> <td><strong>IP Rating</strong></td> <td>IP55</td> </tr> <tr> <td><strong>Operating Temperature Range</strong></td> <td>0°C (32°F) to 55°C (131°F)</td> </tr> <tr> <td><strong>Max size (mm/inch)</strong></td> <td>211.6 x 130 x 49 / 8.33 x 5.118 x 1.929</td> </tr> <tr> <td><strong>Weight (kg/lbs)</strong></td> <td>2.15 / 4.74</td> </tr> <tr> <td><strong>Adjustable Crossovers</strong></td> <td>yes</td> </tr> </tbody> </table> <table class="table caption-top"> <tbody> <tr> <td><strong>INPUTS:</strong></td> <td>Pre IN / Speaker IN</td> </tr> <tr> <td><strong>Ch 1-2</strong></td> <td></td> </tr> <tr> <td>Full</td> <td>–</td> </tr> <tr> <td>Hi-pass</td> <td>50 ÷ 5k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Lo-pass:</td> <td>50 ÷ 5k Hz @ 12 dB/Oct.</td> </tr> <tr> <td><strong>Ch 3-4</strong></td> <td></td> </tr> <tr> <td>Full</td> <td>–</td> </tr> <tr> <td>Hi-pass</td> <td>50 ÷ 5k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Lo-pass</td> <td>50 ÷ 5k Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Bass Boost 45Hz (adjustable)</td> <td>(0 ÷ 8) dB [LP = ON only]</td> </tr> </tbody> </table> <table class="table caption-top"> <tbody> <tr> <td><strong>Output Nominal Power (RMS) @ 14.4 VDC, THD 1%:</strong></td> <td></td> </tr> <tr> <td>4 Ch:</td> <td>160 W x 4 (4Ω)</td> </tr> <tr> <td>4 Ch:</td> <td>250 W x 4 (2Ω)</td> </tr> <tr> <td>3 Ch:</td> <td>160 W x 2 (4Ω) 500 W x 1 (4Ω)</td> </tr> <tr> <td>3 Ch:</td> <td>250 W x 2 (2Ω) 500 W x 1 (4Ω)</td> </tr> <tr> <td>2 Ch:</td> <td>500 W x 2 (4Ω)</td> </tr> <tr> <td><strong>Total Power</strong></td> <td>1000 W</td> </tr> </tbody> </table> <h4><span style="color: #ff6600;">Physical Specs</span></h4> <div class="mb-5" style="box-sizing: border-box; color: #212529; font-family: 'Titillium Web', sans-serif; font-size: 16px; margin-bottom: 3rem !important;"><a class="float-start mb-3" href="https://static.hertz-audio.com/media/2022/02/Hertz_SP4900_dim-e1645194243639.png" data-fancybox="product-physical-specs"><img loading="lazy" decoding="async" class="attachment-full size-full" src="https://static.hertz-audio.com/media/2022/02/Hertz_SP4900_dim-e1645194243639.png" alt="SP 4.900" width="333" height="600" /></a></p> <div class="table-responsive-sm"> <table class="table caption-top"> <tbody> <tr> <td></td> <td>mm</td> <td>in</td> </tr> <tr> <td><strong>A</strong></td> <td>205</td> <td>8.07</td> </tr> <tr> <td><strong>B</strong></td> <td>211.6</td> <td>8.33</td> </tr> <tr> <td><strong>C</strong></td> <td>107</td> <td>4.212</td> </tr> <tr> <td><strong>D</strong></td> <td>130</td> <td>5.118</td> </tr> <tr> <td><strong>E</strong></td> <td>49</td> <td>1.929</td> </tr> </tbody> </table> </div> </div> <h3><span style="color: #ff6600;">Features</span></h3> <ul> <li>Up to 87% efficiency thanks to ADC (Advanced D-Class) output stage.</li> <li>USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit.</li> <li>160 W RMS x 4 (4Ω) with ultra-compact size 211.6 x 130 x 49 / 8.3 x 5.1 x 1.9 (mm/inch).</li> <li>IP55 aluminium chassis for maximum protection against humidity and external agents.</li> <li>No cooling fan to prevent internal accumulation of dirt 6. Sealed power cord, line inputs, and speaker outputs to prevent oxidation.</li> <li>Crossovers filters and controls on a single side to facilitate calibration when the product is installed.</li> </ul> <h1><img loading="lazy" decoding="async" class="alignnone size-large wp-image-7399" src="https://static.hertz-audio.com/media/2022/02/Hertz_Powerspots_logo-1024x218.png" alt="" width="1024" height="218" /></h1> <p> </p> <h1><a class="col-md-6 col-sm-12 mb-3" href="https://static.hertz-audio.com/media/2022/02/Hertz_USS.png" data-fancybox="product-technologies-1"><img loading="lazy" decoding="async" class="attachment-full size-full" src="https://static.hertz-audio.com/media/2022/02/Hertz_USS.png" sizes="auto, (max-width: 695px) 100vw, 695px" srcset="https://static.hertz-audio.com/media/2022/02/Hertz_USS.png 695w, https://static.hertz-audio.com/media/2022/02/Hertz_USS-300x73.png 300w" alt="SP 4.900" width="695" height="169" /></a></h1> <div class="col-md-6 col-sm-12"> <div> <p>USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit</p> </div> </div> <h1><a class="col-md-6 col-sm-12 mb-3" href="https://static.hertz-audio.com/media/2022/02/Hertz_Ultra_Compact_amp.png" data-fancybox="product-technologies-2"><img loading="lazy" decoding="async" class="attachment-full size-full" src="https://static.hertz-audio.com/media/2022/02/Hertz_Ultra_Compact_amp.png" sizes="auto, (max-width: 650px) 100vw, 650px" srcset="https://static.hertz-audio.com/media/2022/02/Hertz_Ultra_Compact_amp.png 650w, https://static.hertz-audio.com/media/2022/02/Hertz_Ultra_Compact_amp-300x78.png 300w" alt="SP 4.900" width="650" height="169" /></a></h1> <div class="col-md-6 col-sm-12"> <div> <p class="p1">160 x 4 RMS (4Ω) with ultra-compact size (211.6 x 130 mm)</p> <p><a class="col-md-6 col-sm-12 mb-3" href="https://static.hertz-audio.com/media/2022/02/Hertz_ADC.png" data-fancybox="product-technologies-0"><img loading="lazy" decoding="async" class="attachment-full size-full" src="https://static.hertz-audio.com/media/2022/02/Hertz_ADC.png" sizes="auto, (max-width: 501px) 100vw, 501px" srcset="https://static.hertz-audio.com/media/2022/02/Hertz_ADC.png 501w, https://static.hertz-audio.com/media/2022/02/Hertz_ADC-300x101.png 300w" alt="SP 4.900" width="501" height="169" /></a></p> <div class="col-md-6 col-sm-12"> <div> <p class="p1">Up to 87% efficiency thanks to ADC (Advanced D-Class) output stage</p> <div class="elementor-element elementor-element-7c5f478 elementor-widget elementor-widget-heading" data-id="7c5f478" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h2 class="elementor-heading-title elementor-size-default">Hertz ADC<br /> (Advanced D-Class)</h2> </div> </div> <div class="elementor-element elementor-element-d97438a elementor-widget elementor-widget-text-editor" data-id="d97438a" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <p>The Herz SP compact amplifier range consists of three high-performance models. There are two four-channel models, the flagship SP4.900 with 160 x 4 W RMS at 4Ω and the SP4.500 with 90 x 4 W RMS at 4Ω, and a mono model SP1.900 boasting 1000 W RMS at 1Ω.</p> <p>Hertz SP amplifier are the first Hertz amplifier featuring the renewed <strong>Hertz ADC (Advanced D-Class)</strong> output stage, reaching up to 87% efficiency and delivering an impressive power rating, with an ultra-compact size.</p> <p>Being ultra-compact with an impressive power, SP amplifiers are the ideal choice for Motorcycle application and for under-seat in sport cars and behind-seat installations in trucks.</p> <p>Hertz ADC technology ensures SP amplifiers overtake the usual <strong>ultra-compact amplifier performances,</strong> delivering an outstanding S/N Ratio and THD specifications, and almost completely eliminating EMI and RFI noise, for<strong> peerless sound quality.</strong></p> <p>This versatility of the four-channel models is perfect to drive high-power (4Ω) front speakers with <strong>a bridged (4Ω) subwoofer</strong>.</p> <p>SP amplifiers are fully protected against overheating and DC outputs, immediately switching in protection mode (red LED on) to save your speaker system.</p> <p><strong>The IP55 certified Aluminum chassis</strong> offers maximum protection against humidity and external agents and <strong>the absence of an internal cooling fan</strong> prevents the accumulation of dirt. SP amplifier’s main board <strong>has conformal coating layers</strong> to prevent harm caused by internal condensation, a condition that can happen when warm, moist air meets the amp chassis of a lower temperature.</p> <div class="elementor-element elementor-element-37eea26 elementor-widget elementor-widget-text-editor" data-id="37eea26" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <p><strong>SP amplifiers feature a built-in sealed power cord, line inputs, and speaker outputs</strong> for a bulletproof motorcycle application providing safe power delivery in even the worst weather conditions. <strong>The solid power supply harness </strong>ensures ultra-stable power and ground connection, preventing any loss of contact caused by vibration. Due to its specific design, <strong>SP amplifiers are the ultimate option for Motorcycle, Marine, and Powersports applications.</strong></p> </div> </div> <div class="elementor-element elementor-element-e5875f5 elementor-widget elementor-widget-image" data-id="e5875f5" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"><img loading="lazy" decoding="async" class="attachment-large size-large wp-image-7464" src="https://static.hertz-audio.com/media/2022/02/SP-4900-technology.png" sizes="auto, (max-width: 640px) 100vw, 640px" srcset="https://static.hertz-audio.com/media/2022/02/SP-4900-technology.png 640w, https://static.hertz-audio.com/media/2022/02/SP-4900-technology-300x27.png 300w" alt="" width="640" height="58" /></div> </div> <div class="elementor-element elementor-element-b6b4ef4 elementor-widget elementor-widget-text-editor" data-id="b6b4ef4" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <p>SP 4.900 features <strong>built-in USS (Universal Speakers Simulator)</strong>, a dynamic load circuit on Hi-Level inputs which initially shows the OEM output channel a load low enough to neutralize OEM speaker outputs muting protection circuit. Once the circuit activates, a higher load is introduced – still low enough to damp Class D outputs, but not low enough to cause current issues or heat dissipation problems.</p> <p>SP 4.900 offers both remote-in signal detection and DC offset sensing on the speaker inputs for automatic turn on, providing total integration with any vehicle.</p> <p><strong>The versatile crossover filters and control knob are all located on a single side</strong>, to allow an easy calibration when the product is installed.</p> <p>The filters section includes extremely flexible high-pass and low-pass crossovers, adjustable from 50 Hz to 5 kHz with 12 dB/Oct slope. Together with a bass-boost control (45 Hz, 0÷8 dB), they allow both front channels to be configured for full-range operation, or for use with a subwoofer and related speakers.</p> <p>The high-pass crossover can also be used to optimize the performance of SPL Show NEO high-efficiency coaxial speakers, the perfect partners for SP amplifiers.</p> <p> </p> </div> </div> </div> </div> </div> </div> </div> </div> <h1 class="col-8"><span style="color: #ff6600;"><a class="btn btn-pdf" style="color: #ff6600;" href="http://!https://www.audiofile-incar.co.uk/wp-content/uploads/2024/09/Hertz-SP-4.900.pdf">Tech Sheet</a></span></h1> <p> </p> <p> </p> <p> </p> <!-- SP 4.900 is the first Hertz amplifier featuring the renewed Hertz ADC (Advanced D-Class) output stage, reaching up to 85% efficiency and delivering an impressive power rating of 160 x 4 (4Ω) W RMS or 500 W x 2 (4Ω) W RMS when bridged, with an ultra-compact size of 211.6 (8.3) x 130 (5.1) mm (in.). Being ultra-compact with impressive power, SP 4.900 is the ideal choice for Motorcycle application and for under-seat in sports cars and behind-seat installations in trucks. Technical Specs Channels 4 – 3 – 2 Nominal power supply voltage 11 ÷ 15 VDC Pulse Operating voltage 6 ÷ 16 VDC Idling current 1.1 A Idling current when off 0.03 mA Consumption @ 14.4 VDC, MIN load impedance (Max Musical Power) 50 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 200 Bandwidth @ -3 dB 10 Hz ÷35 kHz S/N ratio (A weighted @ 1 V Input) 105 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) 211.6 x 130 x 49 / 8.33 x 5.118 x 1.929 Weight (kg/lbs) 2.15 / 4.74 Adjustable Crossovers yes INPUTS: Pre IN / Speaker IN Ch 1-2 Full – Hi-pass 50 ÷ 5k Hz @ 12 dB/Oct. Lo-pass: 50 ÷ 5k Hz @ 12 dB/Oct. Ch 3-4 Full – Hi-pass 50 ÷ 5k Hz @ 12 dB/Oct. Lo-pass 50 ÷ 5k Hz @ 12 dB/Oct. Bass Boost 45Hz (adjustable) (0 ÷ 8) dB [LP = ON only] Output Nominal Power (RMS) @ 14.4 VDC, THD 1%: 4 Ch: 160 W x 4 (4Ω) 4 Ch: 250 W x 4 (2Ω) 3 Ch: 160 W x 2 (4Ω) 500 W x 1 (4Ω) 3 Ch: 250 W x 2 (2Ω) 500 W x 1 (4Ω) 2 Ch: 500 W x 2 (4Ω) Total Power 1000 W Physical Specs mm in A 205 8.07 B 211.6 8.33 C 107 4.212 D 130 5.118 E 49 1.929 Features Up to 87% efficiency thanks to ADC (Advanced D-Class) output stage. USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit. 160 W RMS x 4 (4Ω) with ultra-compact size 211.6 x 130 x 49 / 8.3 x 5.1 x 1.9 (mm/inch). IP55 aluminium chassis for maximum protection against humidity and external agents. No cooling fan to prevent internal accumulation of dirt 6. Sealed power cord, line inputs, and speaker outputs to prevent oxidation. Crossovers filters and controls on a single side to facilitate calibration when the product is installed.   USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit 160 x 4 RMS (4Ω) with ultra-compact size (211.6 x 130 mm) Up to 87% efficiency thanks to ADC (Advanced D-Class) output stage Hertz ADC (Advanced D-Class) The Herz SP compact amplifier range consists of three high-performance models. There are two four-channel models, the flagship SP4.900 with 160 x 4 W RMS at 4Ω and the SP4.500 with 90 x 4 W RMS at 4Ω, and a mono model SP1.900 boasting 1000 W RMS at 1Ω. Hertz SP amplifier are the first Hertz amplifier featuring the renewed Hertz ADC (Advanced D-Class) output stage, reaching up to 87% efficiency and delivering an impressive power rating, with an ultra-compact size. Being ultra-compact with an impressive power, SP amplifiers are the ideal choice for Motorcycle application and for under-seat in sport cars and behind-seat installations in trucks. Hertz ADC technology ensures SP amplifiers overtake the usual ultra-compact amplifier performances, delivering an outstanding S/N Ratio and THD specifications, and almost completely eliminating EMI and RFI noise, for peerless sound quality. This versatility of the four-channel models is perfect to drive high-power (4Ω) front speakers with a bridged (4Ω) subwoofer. SP amplifiers are fully protected against overheating and DC outputs, immediately switching in protection mode (red LED on) to save your speaker system. The IP55 certified Aluminum chassis offers maximum protection against humidity and external agents and the absence of an internal cooling fan prevents the accumulation of dirt. SP amplifier’s main board has conformal coating layers to prevent harm caused by internal condensation, a condition that can happen when warm, moist air meets the amp chassis of a lower temperature. SP amplifiers feature a built-in sealed power cord, line inputs, and speaker outputs for a bulletproof motorcycle application providing safe power delivery in even the worst weather conditions. The solid power supply harness ensures ultra-stable power and ground connection, preventing any loss of contact caused by vibration. Due to its specific design, SP amplifiers are the ultimate option for Motorcycle, Marine, and Powersports applications. SP 4.900 features built-in USS (Universal Speakers Simulator), a dynamic load circuit on Hi-Level inputs which initially shows the OEM output channel a load low enough to neutralize OEM speaker outputs muting protection circuit. Once the circuit activates, a higher load is introduced – still low enough to damp Class D outputs, but not low enough to cause current issues or heat dissipation problems. SP 4.900 offers both remote-in signal detection and DC offset sensing on the speaker inputs for automatic turn on, providing total integration with any vehicle. The versatile crossover filters and control knob are all located on a single side, to allow an easy calibration when the product is installed. The filters section includes extremely flexible high-pass and low-pass crossovers, adjustable from 50 Hz to 5 kHz with 12 dB/Oct slope. Together with a bass-boost control (45 Hz, 0÷8 dB), they allow both front channels to be configured for full-range operation, or for use with a subwoofer and related speakers. The high-pass crossover can also be used to optimize the performance of SPL Show NEO high-efficiency coaxial speakers, the perfect partners for SP amplifiers.   Tech Sheet