In this review, we will be comparing HD6 and HD4, two Powered Bookshelf speakers by Audioengine Being Powered speakers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features
of Audioengine HD6 and Audioengine HD4 first before getting into our more
detailed comparison.
HD6 and HD4 are members of Audioengine's HD series of speakers. Below you can find the loudspeakers from this series.
In the following sections, we will get into more detail in order to better understand how the Audioengine HD6 and Audioengine HD4 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both HD6 and HD4 are 2-way speakers.
| Driver |
Audioengine HD6 |
Audioengine HD4 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.5-inch
|
1 x 4-inch
|
HD6 features a 1" Silk Soft-Dome Tweeter and 1 x 5.5" Kevlar Woofer . On the other hand, the HD4 features a 0.75" Silk Soft-Dome Tweeter and 1 x 4" Aramid Woofer .
Frequency Response
HD6 has a frequency range of 50-22k Hz whereas HD4 has a frequency range of 60-22k Hz. With a minimum frequency of 50Hz, the HD6 can go significantly deeper on the low side and provide stronger bass compared to the HD4's min frequency of 60Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Cabinet Type and Port Position
HD6 has a rear firing port whereas HD4 has a front firing ports. Audioengine HD4's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Audioengine HD6 with its rear-firing port.
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Audioengine HD6's and Audioengine HD4's external dimensions. Audioengine HD6 has external dimensions of 314.3 x 182.6 x 317.5mm ( 12.375 x 7.1875 x 12.5inch) whereas Audioengine HD4 has external dimensions of 231.8 x 138.1 x 225.4mm ( 9.125 x 5.4375 x 8.875inch) .
Audioengine HD6 is clearly the larger of the two speakers. Its body is 44.5mm wider, 82.5mm taller and 92.1mm deeper than Audioengine HD4.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the Audioengine HD6 is approximately 579.8cm2 / 89.9inch2 and base area of the Audioengine HD4 is approximately 311.3cm2 / 48.3inch2. The HD6 requires 86% more surface area than the HD4 which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Audioengine HD6 weighs 5.50kg / 12.1lbs and the Audioengine HD4 weighs 2.40kg / 5.3lbs. This makes the HD6 129% heavier than the HD4.
Here is a comparison of how HD6 and HD4's weights compare with the average, max and min weights in Powered Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Audioengine HD6?
Here are the items that are included inside the box of HD6:
Powered speaker Passive speaker 2 Grilles (pre-installed) 6-feet AC power cord Bluetooth antenna Remote control 13-feet Speaker cable (w/ banana connectors on each end) 6.5-feet Stereo minijack cable 2 Microfiber speaker bags MIcrofiber cable bag Quickstart Guide Product Line Brochure
What's in the Box of Audioengine HD4?
Here are the items that come with the HD4:
Powered speakerPassive speaker2 Grilles (pre-installed)6-feet AC power cordBluetooth antenna5-feet microUSB-to-USB cable6.5-feet Speaker cable (banana connectors on each end)5-feet Stereo minijack cable6-feet Stereo RCA cable2 Microfiber speaker bags2 MIcrofiber cable bagsQuickstart GuideProduct Line Brochure
 Woofer Size |
5.5 inches
vs
4 inches
|
Larger woofer |
| Low Frequency Response |
50 Hz
vs
60 Hz
|
Generates deeper bass |
 Digital Input |
Optical
vs
No
|
Connect digital inputs directly |
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
 Height |
231mm
vs
314mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
311cm2 (138x225mm)
vs
579cm2 (182x317mm)
|
Takes less floor space |
 Price per pair* |
449USD
vs
699USD
|
costs less (*prices may change depending on the seller, location and time) |
 USB Port |
microUSB
vs
No
|
USB port adds flexibility |
 Headphone Output |
3.5mm
vs
No
|
Connect your headphone |
| General |
Audioengine HD6 |
Audioengine HD4 |
| Brand |
Audioengine |
Audioengine |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
50-22k Hz |
60-22k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
100-watt RMS |
60-watt RMS |
| Watts Peak (Max) |
200-watt RMS |
120-watt RMS |
| Max Bit Depth |
24-bit |
24-bit |
| Max Sample Rate |
192 kHz |
48 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.5" |
4" |
| Woofer Composition |
Kevlar |
Aramid |
| Tweeter Size |
1" |
0.75" |
| Tweeter Type |
Soft-Dome |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
front |
Physical Specs |
|
|
| Height |
314.3mm (12.4") |
231.8mm (9.1") |
| Width |
182.6mm (7.2") |
138.1mm (5.4") |
| Depth |
317.5mm (12.5") |
225.4mm (8.9") |
| Weight |
5.50kg (12.1lbs) |
2.40kg (5.3lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Black, Walnut, White, Cherry Wood |
Black, Walnut |
| Mounting Bracket |
No |
No |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
3.5mm, RCA |
3.5mm, RCA |
| USB Port |
No |
microUSB |
| Phone Input |
No |
No |
| Subwoofer Output |
Wired |
Wired |
| Digital Input |
Optical |
No |
| HDMI Input |
No |
No |
| Headphone Jack |
No |
3.5mm |
| Ethernet Port |
No |
No |
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 Years |