About the Helix Blue B FIVE
Clean lines and solid power
Clean lines and solid power
German engineering and craftsmanship combine to create a sleek amplifier that'll make your vehicle's sound system come alive. The Helix Blue B FIVE 5-channel amplifier fills your vehicle's interior with crystal-clear, powerful music, putting out 60 watts RMS to each of your full-range speakers, plus up to 320 watts RMS to a sub. Or, you can use the B FIVE in 3-channel mode to power a pair of component speakers with up to 180 watts RMS each, while you drive the sub with that 320 watts.
Made for high quality sound
The Helix Blue B FIVE amp starts with a noise-free input stage, then uses proprietary technology to achieve an incredible level of acoustic accuracy. The attention to detail extends down to the superior internal components, specially "surface-mounted" to double-sided, copper-plated circuit boards, all contributing to superb sound quality. A big, heavy wrap-around heatsink dissipates the heat for cool, reliable play.
B FIVE features
You'll find the tools you need to shape your sound. The high- and low-pass filters both cover an exceptionally wide freqency range, so you can adjust to get the best possible performance from many different types of speakers. A bass boost will add even more bang, if you want it to.
Amp for a Helix factory upgrade system
The B FIVE can also serve as an amp in a Helix Plug and Play factory upgrade system. You can use an EPC5 Easy Plug Cable and a Helix vehicle-specific adapter harness to plug your B FIVE directly into your vehicle's stereo to get its input signal, with no wire-cutting or splicing necessary.
Product highlights:
- 5-channel car amplifier
- 60 watts RMS x 4 + 250 watts RMS x 1 at 4 ohms
- 90 watts RMS x 4 + 320 watts RMS x 1 at 2 ohms
- 180 watts RMS x 2 bridged output at 4 ohms + 320 watts RMS x 1 at 2 ohms
- Class AB design on front and rear channels, Class D on sub channel
- variable low-pass filter (15-4000 Hz)
- variable high-pass filter (40-4000 Hz)
- bass boost (0-18 dB at 45 Hz )
- speaker-level inputs via 8-pin harness
- preamp inputs and outputs
- 4-gauge power and ground leads recommended wiring and hardware not included with amplifier
- fuse rating:305A x 3
- 17-15/16"W x 2"H x 10-1/4"D
- warranty: 2 years
- MFR # B FIVE
What's in the box:
Helix Blue B FIVE owner's manual
- Five-channel amplifier
- Three 30 amp ATO fuses (installed)
- Four 3/4" Self-tapping screws
- 8" Speaker-level input harness (Molex plug on one end)
- 4mm Allen wrench
- 2mm Allen wrench
- Instruction manual (German/ English)
Customer reviews for Helix Blue B FIVE
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More details on the Helix Blue B FIVE
Features & specs
Performance | ||
---|---|---|
RMS Power Output (Watts x Channels) |
60 x 4 250 x 1 | |
Peak Power Output (Watts x Channels) | 180 x 4 | |
Power at 2 Ohms (Watts x Channels) | 90 x 4 | |
Power at 1 Ohm (Watts x Channels) | --- | |
Bridged Power (Watts x Channels) | 180 x 2 | |
Minimum Impedance Bridged | 4 | |
Minimum Impedance Unbridged | 2 | |
Minimum Impedance | 2 | |
Best Frequency Response | 10-30000 Hz | |
THD at Rated RMS Power | 0.03% | |
Signal to Noise Ratio | 95 dB | |
Input Voltage | --- | |
Features | ||
Amplifier Class | AB/D | |
Low-Pass Crossover Frequency | 40-4000 Hz | |
Low-Pass Slope (dB/octave) | NA | |
High-Pass Crossover Frequency | 15-4000 Hz | |
High-Pass Slope (dB/octave) | NA | |
Bass Boost | 0-18 dB | |
Bass Boost Frequency | 45 Hz | |
Fan Cooled | No | |
Fuse Rating | 90 | |
Speaker Level Inputs | --- | |
Preamp Outputs | No | |
Width (inches) | 17-15/16 | |
Height (inches) | 2 | |
Depth (inches) | 10-1/4 | |
Parts Warranty | 2 Years | |
Labor Warranty | 2 Years |
Product Research
Features
5-Channel Design: The B FIVE is designed to power four full-range speakers and a subwoofer, or two tweeters, two midranges, and a subwoofer simultaneously. The full-range section (4-channel) of the amp is Class-AB and the subwoofer section is Class-D. The amplifier's 1/2 channels and 3/4 channels (front and rear) are individually bridgeable, so the B FIVE can power 5, 4, or 3 channels.
2-Ohm Stable: In stereo mode (powering five speakers), all five channels are 2-ohm stable; at 2 ohms the power output is 90 watts RMS x 4 to the full range channels plus 320 watts RMS x 1 to the subwoofer channel.
Bridgeable: The full-range section (channels 1/2 and 3/4) of the B FIVE can be bridged to two channels, outputting 180 watts RMS x 2-channels into 4 ohms. You can also wire the B FIVE in four channel mode, bridging half the full-range section of the amp and running the other half in stereo (60 watts RMS x 2 channels, plus 180 watts RMS x 1 channel, plus 250 watts RMS x 1 subwoofer channel).
Protection Circuitry: The B FIVE offers four protection circuits: short circuit (or too low an impedance on the outputs), thermal overload, over voltage, and under voltage.
Fully Active 3-Channel: Because of the built-in crossover's flexibility, the B FIVE can provide power and the active crossover for a 3-way system. Channels 1/2 power two tweeters, with a high-pass crossover point as high as 4 kHz. Channels 3/4 power two midranges, with a band-pass crossover having a lower threshold as low as 15 Hz and an upper threshold as high as 4 kHz. Channel 5 powers a woofer (or mono woofers) with a low-pass crossover point between 40 Hz and 4 kHz.
Controls
5-Channel: The amplifier is divided into three sections, channels 1/2 (full-range), channels 3/4 (full-range), and the subwoofer channel. Each section has independent gain, bass boost, and crossover controls.
Input Mode:
- 2-channel: all five amplifier channels receive signal from the channel 1/2 inputs; channels 3/4 receive the same signal as channels 1/2; channel 5 (subwoofer) is the summed signal from channels 1/2
- 4-channel: channels 1/2 and channels 3/4 receive independent signals; channel 5 (subwoofer) is the summed signal from the other four
- 5-channel: each amplifier channel has a discrete input
Crossovers: Each section of the amp has independent crossover controls, each slightly different from the others:
- Channels 1/2: a two position switch specifies the crossover operation as high-pass or full-range; the high-pass crossover point is continuously variable from 15 Hz to 4 kHz
- Channels 3/4: a three position switch specifies the crossover operation as high-pass, full-range, or low-pass; the high-pass crossover point is continuously variable from 15 Hz to 4 kHz and the low-pass crossover point is continuously variable from 40 Hz to 4 kHz; when the crossover switch is in the low-pass position, the high-pass frequency dial is also active, depending on the high-pass frequency setting, this creates either a subsonic filter or a band-pass crossover (with a lower limit from 15 Hz to 4 kHz, and an upper limit from 40 Hz to 4 kHz)
- Subwoofer Channel: the subwoofer's low-pass crossover is always engaged; the low-pass crossover point is continuously variable from 40 Hz to 4 kHz
Gain: Each section of the B FIVE has its own gain control; the rotary gain controls are continuously variable from 0.2 volts to 6.0 volts to match the source signals.
Bass Boost: Each section of the amplifier also has an independent Bass Boost circuit; they are centered at 45 Hz and continuously variable from 0 dB to +18 dB.
Connections
Power: The power and ground inputs are set-screw terminals; they will accept bare wire up to 4-gauge (HELIX recommends 4-gauge minimum) and are tightened/loosened with the supplied 4mm Allen wrench.
Remote: The remote turn-on input is a set screw terminal; it will accept bare wire up to 10-gauge and is tightened/loosened with the supplied 2mm Allen wrench.
Speaker Outputs: The speakers connect to five pair of set-screw terminals; they accept bare wire up to 10-gauge and are tightened/loosened with the supplied 2mm Allen wrench.
Line Input: Three pair of stereo RCA jacks connect to the output signal from the head unit.
Speaker Level Input: Use the included harness when speaker level inputs are needed, or use the HELIX Easy Plug Cable and vehicle specific adapter harness (both sold separately, see explanation above).
- Black: channel 1 negative
- Yellow: channel 1 positive
- Gray: channel 2 negative
- Red: channel 2 positive
- White: channel 3 negative
- Blue: channel 3 positive
- Green: channel 4 negative
- Orange: channel 4 positive
Fuse: The amp is protected by three 30-amp ATO-type fuses.
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Customer Q&A
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Really one of the most amazing amps out there. The AB class for the 4 channels are superb (and under-rated). It truly packs tremendous power and gives the performance of an amp at double the price! A must buy for a 5-channel amp!
Rcouch from Castlewood, VA