Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier
PRODUCT INFORMATION
Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier
$439.99
$439.99
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Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier
Need Help?
Call us at (864) 334‑6131 or message our team with your bike year/model and current upgrades. We'll map the best path to louder, cleaner sound.
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Description
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Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier
The Hertz SP 1.900 puts 1000 watts RMS on a single channel in a compact, fanless, IP55 sealed aluminum chassis. It is a dedicated bass amplifier: low-pass from 50Hz to 250Hz, a 25Hz subsonic filter, bass boost and phase control, with sealed power, input and speaker connections.
1000W RMS Mono Power, Stable to 1 Ohm
Built for subwoofers and dedicated bass in bagger, powersports and boat systems.
- 1000W RMS x 1 at 2Ω and at 1Ω (14.4V)
- 600W RMS x 1 at 4Ω (14.4V)
- IP55 sealed, fanless aluminum chassis
Key Product Details
| Product | Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier |
| Amplifier Type | Single-channel (mono) Class D amplifier, Hertz ADC output stage |
| Best For | Subwoofers and dedicated bass in bagger, powersports and marine audio systems |
| System Goal | Real bass output in an open-air system without a large amplifier |
| Speaker Support | 4Ω, 2Ω or 1Ω loads (1Ω minimum) |
| Inputs | Pre-in (RCA) and speaker-level inputs, with USS for head units that need a speaker load |
| Install Focus | Compact sealed chassis for tight motorcycle, powersports and boat mounting locations |
Always verify subwoofer impedance, wiring, fuse size, amplifier placement, gain setting and charging system capacity before ordering or installing this amplifier.
Bass Power That Survives Outside
Subwoofers on a bike or boat need real current and an amplifier that will not choke on water and road grime. The SP 1.900 runs a fanless aluminum chassis rated IP55 with sealed power, input and speaker connections, so there is no fan pulling dirt across the board.
With 1000 watts RMS available at 2 ohms and 1 ohm, a subsonic filter at 25Hz and an adjustable low pass, it gives you the control to keep a sub clean and loud instead of just loud.
Power and Performance Specifications
| RMS Power @ 4Ω | 600 watts x 1 at 14.4V, 1% THD |
| RMS Power @ 2Ω | 1000 watts x 1 at 14.4V, 1% THD |
| RMS Power @ 1Ω | 1000 watts x 1 at 14.4V, 1% THD |
| Total RMS Power | 1000 watts |
| Minimum Load | 1Ω |
| Amplifier Class | D (Hertz ADC), up to 87% efficiency |
| THD | Under 0.1% (100Hz, 4Ω, 70% rated power) |
| Bandwidth | 10Hz–500Hz |
| Signal-to-Noise Ratio | 95 dBA |
| Damping Factor | Over 300 |
Controls, Inputs and Electrical
| Low-Pass Filter | 50Hz–250Hz adjustable |
| Subsonic Filter | 25Hz, 24 dB/octave |
| Bass Boost | 0–8 dB (low pass on only) |
| Phase | 0–180° |
| Pre-In Sensitivity | 0.6–6 VRMS |
| Speaker-In Sensitivity | 2.2–22 VRMS |
| Turn-On | Remote in (6–15 VDC) or ART auto turn-on from speaker-level input (3.5–7 VDC, selectable) |
| Power Supply Voltage | 11–15 VDC (operating 6–16 VDC) |
| Current Draw | 50A at 14.4V, 2Ω, max musical power; idle 1.1A |
| Protection | IP55 |
| Operating Temperature | 0°C to 55°C |
| Dimensions | 211.6 x 130 x 49 mm (8.3 x 5.1 x 1.9 in) |
| Weight | 2.15 kg |
Recommended System Planning
The SP 1.900 only performs if the power side is right. Plan OFC power and ground wire sized for a 50A draw, a fuse at the battery, a solid ground, a clean signal feed and a subwoofer load that matches the amp (4Ω, 2Ω or 1Ω). Set the low pass, subsonic and gain with the sub installed, not on the bench.
If you are unsure how the SP 1.900 fits your Road Glide, Street Glide, Road King, Indian, boat or custom build, contact Garage Bagger Stereo before ordering.
What to Pair With the SP 1.900
Parts that get a mono amp wired and tuned correctly.
Hertz MPS 250 S2 10" Shallow Subwoofer
Hertz Mille PRO 10-inch 2-ohm shallow sub.
1998-Present Harley Power Kits
Power and ground wiring for amplifier installs.
Motorcycle Amplifier Installation Parts
Fusing, distribution, RCA and mounting parts.
Motorcycle DSP
Crossover and tuning control for the whole system.
Related Hertz & Motorcycle Audio Paths
Match the SP 1.900 with the right sub, wiring and tuning parts.
Best Use for the SP 1.900
Choose it to power a subwoofer or dedicated bass section where space is tight and the amp will see weather, dirt and heat.
Designed Around Real Motorcycle Audio
Wind noise, road speed, limited mounting space and electrical load all matter on a bike. This amp belongs in systems where the sub, wiring, fusing and tuning are planned together.
Hertz SP 1.900 FAQ
How much power does the SP 1.900 make?
Hertz rates it at 600 watts RMS x 1 at 4Ω, 1000 watts RMS x 1 at 2Ω and 1000 watts RMS x 1 at 1Ω, at 14.4V and 1% THD.
What speaker loads can it run?
It is stable down to 1Ω, so it can drive 4Ω, 2Ω or 1Ω subwoofer loads.
Is the SP 1.900 plug and play?
No. It is a mono bass amplifier that needs its own power, ground, fuse, signal and speaker wiring.
How much current does it draw?
Hertz lists 50A at 14.4V into 2Ω at max musical power and 1.1A at idle. Size the power wire, fuse and charging system for that.
What filters does it have?
An adjustable 50Hz–250Hz low pass, a 25Hz subsonic filter at 24 dB/octave, 0–8 dB bass boost (low pass on only) and 0–180° phase.
Does Garage Bagger Stereo install the SP 1.900?
Garage Bagger Stereo installs motorcycle audio at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131.
Need Help Choosing?
Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order.