HUMP is an acoustically engineered technology designed to direct sound wave towards adjacent chamber. When the sound wave travels down to the other end will interfere with the speaker driver diaphragm.
Since the wavelengths of high frequency sound are short compare to the length of the chamber that the phase difference between the incoming sound wave and the speaker driver diaphragm approaches 0 degree (in phase) , so the interference is constructive and allows the speaker driver able to respond more rapidly to the applied high range small signals.
For most bass frequencies, the wavelength is so much shorter than the chamber length that the phase difference approaches 180 degree (out of phase), so the interference is destructive. Since the diaphragm is damped (destructive) in bass range, it responding least strongly to signals near its natural vibration frequency. The lower the frequency, the more efficient the interference and thus allows to delivery a more pronounced mid to low range improving the cohesive audio experience.
The HUMP technology allows small speaker system to delivery punch, emotion, and clarity music.
| ZeroV Enclosure |
| A loudspeaker enclosure is designed with adopting the HUMP technology. |
It has 2 chambers which the volume (V) of the enclosure interior is determined according to the following empirical formula: V=D.sup.3, where D is the diameter of the loudspeakers. Such a minimized chamber has the highest possible fundamental frequency and the shortest wavelength which greatly reduces the energy of formed low frequency standing waves
 
The ZeroV chamber rear end concave surgace tends to focus the sound waves which reflect from it. The unwanted standing wave amplitude is eliminated greatly.
GVT NF-01
Features
Get the best music out from your Notebook PC anywhere with HUMP NF01.
With USB 2.0 plug and play connection, no external power is required. It is an excellent speaker system to be carried with your notebook computer. The HUMP NF01 is crystal clear as much with its looks as well as its audio quality. Featuring ZeroV enclosure with 33mm x 2 micro drivers rated at 1W/channel delivers amazing audiophile performance.
It's so notably easy. Connect the HUMP NF01 to your PC or notebook USB port then let the concert begin and enjoy your quality music wherever you are.
System Overview
Amplifier (NF-USB01)
Specifications NF01.
| Description |
NF01 USB Miniature Speaker System |
| Features |
• ZeroV Acoustic Technology Enclosure |
• USB 1.1/2.0 Full Speed Interface |
• High efficiency and performance Class D stereo amplifier |
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Audio Power
Amplifier
NF-USB01 |
| Power Rating: |
2.5W |
| Interface: |
USB1.1/2.0 |
| Output Power(RMS): |
1W + 1W |
| Signal-to-Noise Ratio(SNR): |
Better than 90dB |
| Output connection: |
2 * 2.5mm Output Jack |
| Dimension: |
11mm(H) x 24mm(W) x 72mm(D) |
| Weight: |
18g(Approx.) |
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Loud-Speaker
NF-22A |
| Speaker drivers |
2 x 33mm |
| Frequency Range: |
110Hz~18KHz |
| Maximum Iput: |
3 Watts |
| Impedance: |
8 ohms |
| Dimension: |
88mm(H) x 41mm(W) x 61mm(D) |
| Weight: |
200g(Approx.) |
| Enclosure Material: |
Transparent Acrylic |
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Information contained herein is subject to change without notice |
-independent review-
| Listening Position |
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| Get the best out from the NF22A |
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| The curves below represent equal intensity contours at 85dB for sound produces by NF22A. Conceivably, you can get equivalent sound directly on-axis near to the NF02. |
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