JPL Telecom JPL-HAC-1 Specifications, Tests and Review

Headphone type
On-ear
Connectivity
Wired
Frequency Response
100 - 6800 Hz
Sensitivity
93 dB +/- 3dB
Impedance
150 Ohm
Microphone
Boom

Complete technical specifications, details, expert ratings and review of JPL Telecom JPL-HAC-1. Find out how your chosen headphones stack up against the competition and whether they are the ones that best meet your expectations with the headphone comparison feature.

JPL Telecom JPL-HAC-1 Full Specifications and Details

design and dimensions sound quality microphone cable features connections others

DESIGN AND DIMENSIONS JPL Telecom JPL-HAC-1
Product Type Headset - wired - Quick Disconnect
Weight 48 g Better than 91 % of headphones rated.
Earpad Material Leatherette
Recommended Use Phone

The JPL Telecom JPL-HAC-1 are wired headphones. In the case of studio and professional DJ headphones, a wired connection is a standard and a necessity. In this case, connecting via cable reduces audio transmission delays and prevents unwanted battery drain as it would be in case of wireless headphones. The same is de facto true for gaming headsets. In case of headphones for normal music listening, the cable is rather a relic, although it still has its fans. However, the wireless option is much more popular for everyday use in today’s world.

The headphones are designed as on-ear. On-ear headphones are generally lighter. However, their design has fewer isolation capabilities, and therefore, for example, more sound can be let in and out compared to around-ear headphones. The weight of the headphones is 48 g.

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SOUND QUALITY JPL Telecom JPL-HAC-1
Headphones Form Factor On-ear
Adjustable Headband Yes
Connectivity Technology Wired
Sound Output Mode Mono
Frequency Response 100 - 6800 Hz Worse than 93 % of headphones rated.
Total Harmonic Distortion (THD) <3%
Sensitivity 93 dB +/- 3dB Worse than 90 % of headphones rated.
Impedance 150 Ohm
Diaphragm 50 mm Better than 96 % of headphones rated.

The sound quality can be affected by many factors. When it comes to frequency range, the wider it is, the more detail you will hear when listening. However, the range a person can perceive is highly individual. The average person is able to perceive frequencies in the range of 16 to 20 000 Hz. So the most common frequency range you will see on the market is 20 to 20,000 Hz. Lower frequencies up to approximately 256 Hz are considered bass frequencies. Therefore, the lower the bottom value is, the better the headphones will reproduce bass. Conversely, values from approximately 2 048 Hz upwards are treble. That is why headphones with a high upper value will provide a much more accurate reproduction of high notes. JPL Telecom JPL-HAC-1 offers a frequency range of 100 - 6800 Hz. The sensitivity parameter determines how sensitively the headphones can receive the signal from the source. The higher the sensitivity value, the louder the headphones will be able to play with less power consumption. In general, a higher listening volume also means a higher power load for the connected device. So if you're buying headphones to listen to music from your mobile phone, for example, this is relevant to think about as you don't want to drain your phone's battery too much. Lower values around 85 dB are more suitable for listening in more quiet environments (for example, at home or in the office). Medium values of around 90 dB can provide good listening quality in noisier environments (for example, on public transport or in cafés). Headphones with high sensitivity values of around 100 dB or more are designed for really noisy environments, such as concerts. The JPL Telecom JPL-HAC-1 has 93 dB +/- 3dB.

The device connected to the headphones also plays a role most times. The lower impedance value (approximately 100 to 150 Ohms) is suitable for playback from mobile phones, laptops or other portable players that do not have a powerful enough amplifier. The lower impedance will ensure that the required volume level is achieved with less power, thus extending the life of the player. However, at the same time, with lower impedance, there is more distortion of the sound. Headphones with a higher impedance of around 250 Ohms and above are then more suitable for playback from really powerful signal sources or using a headphone amplifier, otherwise the sound coming out of them might not be loud enough. At the same time, higher-impedance headphones will also ensure less distortion in the sound. In the case of these headphones, the impedance reaches the 150 Ohm value.

An important part of these headphones is the diaphragm, which, simply put, converts the electrical signal into a sound. The thin diaphragm that is around 6 mm thick can react quickly to changes in the audio signal and improves high-frequency listening. However, it is less sensitive to bass. The medium-thick diaphragm of around 10 mm provides a fairly balanced sound profile, allowing you to enjoy both bass and treble. A thicker diaphragm of around 20 mm cannot react so quickly to changes in the sound signal, thus impairing bass listening. However, it is more sensitive to higher frequencies. This model features the 50 mm. Total Harmonic Distortion of these headphones is Audio Output | Total Harmonic Distortion. The value quoted by the manufacturer is usually the average distortion over all reproducible frequency bands. This is not a crucial parameter to decide on when making a decision, but on the other hand, keep in mind that higher harmonic distortion can negatively affect sound quality.

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MICROPHONE JPL Telecom JPL-HAC-1
Form Factor Headset microphone
Type Boom
Microphone Operation Mode Bi-directional
Frequency Response 50 - 20000 Hz Better than 96 % of headphones rated.
Sensitivity -32 dB
Impedance 2.2 kOhm
Signal-To-Noise Ratio 58 dB
Microphone Power Source Voltage (DC) 3 V

JPL Telecom JPL-HAC-1 has a boom–type microphone. The microphone sensitivity is -32 dB. A lower microphone sensitivity will generally ensure that even quieter sounds are caught. On the other hand, in noisier environments, distortion of the recording may occur. With a higher sensitivity, the microphone will not distort the recording even in noisy environments. On the other hand, the microphone will not pick up quieter sounds. So it depends on the environment and the purposes you plan to use the headphones for.

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CABLE JPL Telecom JPL-HAC-1
Cable Type Headset cable
FEATURES JPL Telecom JPL-HAC-1
Features JPL Telecoil technology
CONNECTIONS JPL Telecom JPL-HAC-1
Connector Type Headset (Quick Disconnect)
OTHERS JPL Telecom JPL-HAC-1
Included Accessories Carrying case, headset hook, clothing clip, ear cushion (leatherette)
Compliant Standards FCC, RoHS, REACH, EAC
Service & Support Limited warranty - parts and labour - 2 years
Limited warranty - 3 years

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