Helix V Eighteen DSP 18 Channel Amplifier Class GD 12x 70w + 6x 75w RMS
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The Helix V Eighteen DSP is an 18-channel Pure Class GD amplifier with a built-in 64-bit DSP, delivering 12 x 70W and 6 x 75W RMS at 4 ohms. It is part of the Helix V DSP range and designed as an all-in-one amplifier and processor for large, multichannel car audio systems.
Key specifications
- Channels: 18 amplified speaker outputs
- Power at 4 ohms: channels 1–12 70W RMS, channels 13–18 75W RMS
- Power at 2 ohms: channels 13–18 120W RMS
- Amplifier technology: Pure Class GD
- DSP: 64-bit, 2 x 295 MHz audio signal processors
- Inputs: 6 x RCA, 18 x high-level speaker input, 1 x optical SPDIF
- Frequency response: 20 Hz to 22,000 Hz
- Dimensions (H x W x D): 44 x 255 x 220 mm
The Helix V Eighteen DSP is an 18-channel Class GD amplifier with integrated DSP. Channels 1 to 12 deliver 70W RMS each and channels 13 to 18 deliver 75W RMS each at 4 ohms, with channels 13 to 18 rising to 120W RMS at 2 ohms. For a smaller system, the Helix Next V Eight DSP offers 8 channels with a 14-channel DSP at 110W RMS.
Built for big systems
Upgrading a multichannel premium sound system or designing an extensive new configuration from scratch? Eighteen channels of amplification and processing handle either with ease.
Class GD efficiency
Helix's Class GD technology combines high output with efficient operation, keeping heat and current draw in check even at full stretch.
Explore the full range in Helix Amplifiers.
Specification
| @ 4 Ohm Channel 1 - 12 | 70 Watts Channel 13 - 18: 75 Watts |
|---|---|
| @ 2 Ohms Channel 13 - 18 | 120 Watts |
| Input sensitivity RCA / Cinch | max. 4 or 8 Volts Highlevel: max. 16 or 32 Volts |
| Frequency response | 20 Hz - 22,000 Hz |
| Signal converters A/D | BurrBrown 24 Bit D/A: BurrBrown 24 Bit |
| Operating temperature | range. -40° C to +70° C |
| Dimensions | (H x W x D) 44 x 255 x 220 mm /1.73 x 10.04 x 8.66“ |
More specs
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What's Included
- 1 x Amplifier HELIX V EIGHTEEN DSP
- 4 x Speaker connection cable
- 1 x USB cable
- 2 x Allen key
- 1 x Mounting material
- 1 x Instruction manual
Helix
About the Helix HA11809
From our tech experts at CEN
The Helix V Eighteen DSP is an 18-channel Pure Class GD amplifier with a 64-bit DSP built in. Channels 1 to 12 deliver 70 W RMS at 4 ohms and channels 13 to 18 deliver 75 W, rising to 120 W at 2 ohms, all from a 44 x 255 x 220 mm housing.
Who it suits
Large multichannel builds and premium factory systems where every speaker needs its own amplified and processed channel. It accepts 18 high-level inputs, six RCA inputs and an optical input. For a smaller system, the V Twelve DSP MK2 covers 12 amplified channels.
Our tech experts advise
Four speaker connection cables are supplied. Use channels 13 to 18 for the drivers that need the most power, such as midbass woofers on 2 ohm loads. Planning channel allocation before the install saves time later. Installation and tuning are priced per vehicle, so get in touch with your make, model and year.
Explore the full Helix range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Helix
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the HELIX V EIGHTEEN DSP deliver per channel?
A: At 4 ohms, channels 1 to 12 deliver 70W RMS each and channels 13 to 18 deliver 75W RMS each. At 2 ohms, channels 13 to 18 deliver 120W RMS each. Maximum output is up to 100W RMS at 3 ohms on channels 1 to 12 and up to 160W RMS at 2 ohms on channels 13 to 18.
Q: Can the V EIGHTEEN DSP connect to a factory head unit?
A: Yes. It has 18 high-level speaker inputs for connecting to a factory radio or amplifier, plus 6 RCA inputs and an optical SPDIF input for digital sources.
Q: What comes in the box with the HELIX V EIGHTEEN DSP?
A: The amplifier, 4 speaker connection cables, a USB cable, 2 Allen keys, mounting material and the instruction manual.
