Description
- Overview
- In The Box
- Specs
- Video
- Order Protection
Audioengine HD4 Bluetooth Speaker System
Designed to connect to virtually any device, the walnut Audioengine HD4 Bluetooth Speaker System provides a 3.5mm input, a stereo RCA input, a micro-USB input, and Bluetooth connectivity with aptX HD support, which allows for wireless connectivity with your compatible devices. Each speaker consists of a 4" woofer and a 0.75" tweeter and output up to 30W per channel RMS, or 60W per channel peak for room-filling sound. For your convenience, all connectivity is via the powered left speaker, which connects to the passive right speaker with speaker wire.
Cabinets
To minimize unwanted resonances and distortion, Audioengine cabinets have thick high-resin MDF walls with extensive internal bracing. Heavy internal sound-damping material is used to reduce unwanted sound reflections inside the cabinet. All cabinet edges are rounded which look great and reduce high-frequency diffraction effects on the front baffles. The P4 cabinet contains tuned, front-port slots.
Furniture-Grade Finishes
The HD4 cabinets are available in several handsome finishes, including walnut veneers as well as satin black paint, offering options for complementing room furnishings. Also included are detachable grilles that add further aesthetic advantages as they are firmly held in place with hidden neodymium magnets for a clean look.Custom Components
Audioengine designs and manufactures their own tweeters, woofers, and other critical components. In other words, these are not box-built speakers with off-the-shelf parts, but custom-designed to Audioengine's specifications. What they do not fabricate directly in their factory, they have made to their designs (parts such as transformers, magnets, and wiring harnesses, for example). The cabinets, drivers, bass port designs, amplifiers, and crossovers are all painstakingly tuned together for each Audioengine model. This, in turn, makes for a much more efficient system that requires much less power than passive speakers and a separate integrated amplifier or similar A/V components.Based on Studio Monitor Designs
Studio monitor speakers are used by producers and engineers in recording and production studios. They are designed with a theoretical flat frequency response which allows the engineer to create a final mix in such a way that the recorded music will sound good on most other speakers. Although Audioengine speakers are not designed to be up-close "nearfield" studio monitors, they carry over much of the same higher-end technology, components, and design philosophy for all Audioengine speaker systems.High-Quality Bluetooth Audio
The Bluetooth built into the HD4 powered speakers features aptX HD coding, which is an advanced Bluetooth audio codec with very impressive sound. And even if your phone or tablet does not have aptX HD, the HD4 Bluetooth solution is backwards-compatible with SBC and AAC codecs, as well as standard aptX, so you can wirelessly stream music from any Bluetooth-enabled device and still enjoy all your music. High-fidelity Bluetooth aptX HD that really works and sounds great. Here is why:- Extended-range wireless: Most Bluetooth implementations have very limited range, typically within just one room. But with careful signal management circuitry and antenna tuning, we offer a superior solution that has up to 3 times the range of standard Bluetooth for multi-room use, with no degradation in audio quality.
- 24-bit DAC: The HD4 Bluetooth receiver and USB input both utilize the PCM 5102 DAC, widely known for its low noise and high fidelity. The PCM 5102 is used as an upsampling DAC and will pad all bit depths to 24-bit, achieving a higher signal-to-noise ratio and lower noise floor. Due to the high signal-to-noise specs of the PCM 5102, the fact that digital signal is upsampled to 24-bit as well as the added benefit of onboard triple redundancy power source conversion and filtering the HD4 Bluetooth implementation presents impressive low noise and low distortion characteristics with a noticeable improvement over other Bluetooth devices.
HD3 Headphone Amplifier
The HD4 contains a high-performance headphone amplifier based on the OPA2134 low-noise opamp. This amp is able to provide low-impedance, high-fidelity audio, and a 2-volt output which easily drives a wide range of headphones.Amplifier Design
The amplifiers in powered Audioengine speakers are located in the left speaker and are a conservatively rated class A/B analog monoblock design. This is a more traditional speaker/amplifier configuration which provides excellent quality audio and greater flexibility. All circuit boards for the power and preamp sections are vertically mounted for maximum mechanical shock protection.Driver Designs
Audioengine uses audiophile-quality, ferrofluid-cooled silk dome tweeters with neodymium magnets. Silk tweeters hold up well under high power and the edge-driven design gives very smooth response. The woofers are aramid fiber woven glass composite with rubber surrounds. Aramid fiber is obviously very strong, which means the woofer retains its shape when being driven at high levels.Shielding
Both drivers are directly video shielded and allow the user to place the speakers within a few inches of a video monitor. This shielding also offers protection for hard-drive digital music players.Headphone Amp
- 2 VRMS full-scale headphone output level
- 2 ohm output impedance
- 10 ohm to 10 kilohm recommended headphone impedance level
Additional Features
- <50 dB crosstalk
- Output current limiting, thermal over-temperature, and power on/off transient protection
- Input data rate determined by Bluetooth
- ~30 ms wireless latency
- Micro-USB 1.1 input
- 0.7" thick MDF cabinets with real wood veneer
- Tweeters with neodymium magnets
- Aramid fiber woofers with advanced voice coils
Efficient Integrated Design
The speaker cabinets, drivers, innovative bass port designs, amplifiers, and passive crossovers are all critically tuned together for each Audioengine model. This, in turn, makes for a much more efficient system that requires less power than passive speakers and a separate integrated amplifier or similar A/V components. They build all this goodness into the left speaker cabinet to make it super-easy to connect your smartphone, tablet, computer, TV, network player, or any other audio product.- Audioengine HD4 Bluetooth Speaker System (Walnut, Pair)
- 2 x Speaker Grilles
- Power Cord
- Limited 3-Year Warranty
GENERAL SPECIFICATIONS
TypePowered Bluetooth aptX HD speaker system
Amplifier Type
Class AB
Power Output
120 W peak power total (30 W RMS / 60 W peak per channel), AES
Drivers
4″ aramid fiber woofers
0.75″ silk dome tweeters
Inputs
3.5 mm stereo mini-jack, USB, RCA L/R, Bluetooth
Outputs
RCA variable line-out, 3.5 mm mini-jack headphone out
Input Voltages
110-240 V 50/60 Hz auto-switching
SNR
>95 dB (typical A-weighted)
THD+N
<0.05% at all power settings
Crosstalk
<50 dB
Frequency Response
60 Hz-22 kHz ±1.5 dB
Input Impedence
5K ohms unbalanced
Protection
Output current limiting, thermal over-temperature, power on/off transient protection
Power Consumption
Idle: 10W
BLUETOOTH SPECIFICATIONS
Internal D/A ConverterPCM 5102
Input Bit Depth
24 bit (padded)
Bluetooth Receiver Type
Bluetooth 5.0
Supported Codecs
aptX HD, aptX, AAC, SBC
Wireless Operation Range
Up to 100 ft (30 m) typical
Input Data Rate
Determined by Bluetooth
Wireless Latency
~30 milliseconds (ms)
USB SPECIFICATIONS
Connector TypeMicro-USB
USB Device Class
USB 1.1 or above
Input Bit Depth
24 bit (padded)
Input Sample Rate
44.1 kHz/48 kHz
HEADPHONE AMP SPECIFICATIONS
Headphone Amp TypeOPA2134
Full-scale Headphone Output Level
2.0 V RMS
Output Impedence
2 ohms
Recommended Headphone Impedence Level
10 ohms to 10K ohms
WEIGHTS AND MEASURES
Dimensions (HWD)Each speaker – 9″(23 cm) x 5.5″ (14 cm) x 6.5″ (16.5 cm)
Weight
Left (active) – 7 lb (3.2 kg)
Right (passive) – 5.2 lb (2.4 kg)
Total Shipping Weight
16 lb (7.3 kg)
Shipping Box Dimensions (LWH)
20″ (51 cm) x 13″ (33 cm) x 15.5″ (39 cm)
ENVIRONMENTAL REQUIREMENTS
Operating temperature: 32 degrees F to 95 degrees FNon-operating temperature: -4 degrees F to 113 degrees F
Relative humidity: 5% to 95% non-condensing
MATERIALS AND CONSTRUCTION
0.7″ (18 mm) thick MDF cabinets with real wood veneer0.75″ (20 mm) silk dome tweeters with neodymium magnets
4″ (101 mm) aramid fiber woofers with advanced voice coils
Shop with confidence! Every turntable &/or speaker order comes with Convoy Order Protection. This means your order shipment is instantly protected from loss, theft, and damage. Available to ship domestically only.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Refund Policy
ITEMS NOT ACCEPTED FOR RETURN/EXCHANGE - FINAL SALE:
-
Magazines
-
Memberships
-
Collectibles
-
Vinyl
We strongly suggest you check with any STATE RUN FACILITY website under mail rules before placing any orders. We hold NO RESPONSIBILITY for MAGAZINES that may be damaged, confiscated, or not delivered. All sales are final, if shipped.
Revolver Mag must receive the merchandise within 14 days from the date of delivery. (You may find this date on the order confirmation sheet included in your shipment). If your return is received after 14 days of the date of delivery, it will be returned to sender unless you receive authorization from the customer service team for a late return. With this being said, WE ARE FLEXIBLE. Please don’t hesitate to contact the customer service team at shop@revolvermag.com or call us 1-888-265-3590.
ALL returns and exchanges will be issued in the form of an Revolver Gift Card:
-
All gift cards will be applied to your Revolver account
-
If you do not have a Revolver Shop account, one will be created for you using your email address. Your login and password will be emailed to you once the account is created
NOTE:
Revolver Shop is not responsible for return shipping cost on any returns or exchanges unless the fault is ours. If this occurs, in order to provide you with a return label you must contact shop@revolvermag.com with your order number and an explanation of the issue.
ALL RETURNS MUST:
-
NOT HAVE BEEN WORN, ALTERED, WASHED OR DAMAGED
-
Have ALL tags attached
-
We cannot accept returns that smell like cigarette smoke, have animal hair on them, or show any wear or tear
-
ALL returns MUST be in the original packaging
-
Include a note with your Name, Order Number, and Instructions for your return/exchange (otherwise you'll automatically be issued Revolver Shop gift card)
If your return is not received by the appropriate date then it will not be accepted. We recommend you use a shipping service with tracking and/or insurance, as this will provide you with evidence of the return in the event that your package is lost in transit. Without tracking, Revolver Shop is not responsible for lost or missing returns. If return tracking shows that your item was shipped before the 14-day deadline, your return will be accepted.
RETURNS OR EXCHANGES SHOULD BE SENT TO:
Revolver Shop
ATTN: Returns
3103 Philmont Avenue #120
Huntingdon Valley, PA 19006
1-888-265-3590
*Please include the original shipping label or note with your FULL NAME, ORDER NUMBER, and WHAT WE CAN DO TO HELP (exchange or return). You will be notified when your return is processed via an email to the email address provided during the transaction.
INTERNATIONAL RETURNS:
We do accept returns from Canada, but Revolver Shop does not pay for International return shipping at this time. We recommend that you use a shipping service with tracking and/or insurance, as this will provide you with recourse in the event that your package is lost in transit. Revolver Shop is not responsible for packages that are shipped by other means.
If you discover a service failure related to any international shipments (e.g. damaged or lost in transit, shipping error, etc) please contact us as soon as possible and our team will resolve the situation for you.
WRONG, DAMAGED OR DEFECTIVE ITEMS:
If you received the wrong product from Revolver Shop, or if it arrives defective or damaged in transit, please contact shop@revolvermag.com within 7 days of receipt so we can resolve the problem. In these rare cases, Revolver Shop will pay return shipping and provide a cash refund if requested.
EXCHANGES:
Give us a shout… we’re here to help! If you need a different size or changed your mind on the style and you are interested in returning an item in exchange for something else on the site contact shop@revolvermag.com or 1-888-265-3590 and we'll be glad to help you exchange your purchase or issue a store credit.