in-akustik Subwoofer Cables are designed for the reliable transmission of low-frequency audio signals in HiFi and home theater systems. Available as mono and Y-subwoofer cables, they feature high-purity OFC copper conductors and multi-layer shielding to help protect the sensitive LFE signal from electromagnetic interference (EMI). Gold-plated RCA connectors provide a durable connection with low contact resistance for consistent signal transfer. Whether connecting an active subwoofer to an AV receiver or upgrading an existing audio system, you'll find the right subwoofer cable for clean, accurate, and controlled bass reproduction.
S25 Subwoofer Cable | Mono
The S25 Subwoofer Cable is specially designed for the lossless transmission of low-frequency signals in home theater and hi-fi setups. Its elegant, unobtrusive design and high flexibility allow for discreet and easy integration into any system. The signal conductors, made of highly pure, oxygen-free OFC copper, are insulated with foamed polyethylene - a dielectric with an especially low constant that minimizes signal loss and ensures precise, dynamic bass reproduction. The symmetrical construction with separate conductors for signal and ground, along with dense, interference-free shielding, effectively protects against disturbances from Wi-Fi, Bluetooth, or mobile signals. The tightly woven copper braid made from 186 strands ensures clean signal transmission even in demanding environments. Robust solid metal connectors with gold-plated contacts provide consistently low contact resistance and a reliable connection - even after many plug cycles. Each cable is handcrafted in our workshop and individually tested to guarantee the highest quality and long-lasting performance. Click here to discover exciting details
Sub-Mono
The Exzellenz mono subwoofer cable has two separately routed shields. This optimally protects the sensitive audio signals against external interference. The silver-plated conductor transports the analog music signal extremely precisely and enables a crystal-clear and dynamic sound even with high-resolution audio formats. The solid, 24k gold-plated full metal plugs ensure optimum contact and minimal contact resistance on a long-term basis.
Sub-Mono
The Premium subwoofer cable offers impressive sound quality thanks to its high copper content, ensuring powerful and dynamic sound. Thanks to its double shielding, external interference is reduced to a minimum, while the robust cable sheath protects the internal structure from mechanical damage. The cable uses PVC, a versatile and flexible material perfect for this purpose. Additional protection is provided by the textile braiding that encases the cable. 24K gold plating ensures optimum conductivity: gold evens out any tiny irregularities and enlarges the contact surface. This serves to reduce undesirable transition resistance and protects the contact surfaces from corrosion in the long term. The conductor cross-section of the cable is 24 AWG, which helps to transmit sound with greater clarity and detail, especially in the lower bass frequency ranges. This enables a more efficient transmission of electrical current and minimizes the resistance in the cable. Overall, this subwoofer cable delivers outstanding audio quality for discerning audio fans.
Sub-Mono
The Star mono subwoofer cable reduces sound loss thanks to its dense shielding and thick inner conductor. The 24k gold-plated metal contacts maintain the quality of the connections.
S25 Subwoofer Cable | Y-Sub
The S25 Subwoofer Cable is specially designed for the lossless transmission of low-frequency signals in home theater and hi-fi setups. Its elegant, unobtrusive design and high flexibility allow for discreet and easy integration into any system. The signal conductors, made of highly pure, oxygen-free OFC copper, are insulated with foamed polyethylene - a dielectric with an especially low constant that minimizes signal loss and ensures precise, dynamic bass reproduction. The symmetrical construction with separate conductors for signal and ground, along with dense, interference-free shielding, effectively protects against disturbances from Wi-Fi, Bluetooth, or mobile signals. The tightly woven copper braid made from 186 strands ensures clean signal transmission even in demanding environments. Robust solid metal connectors with gold-plated contacts provide consistently low contact resistance and a reliable connection - even after many plug cycles. Each cable is handcrafted in our workshop and individually tested to guarantee the highest quality and long-lasting performance. Click here to discover exciting details
Sub-Y
The Premium Y-subwoofer cable offers outstanding sound quality thanks to its high copper content, ensuring powerful and dynamic sound. Double shielding reduces external interference to a minimum and ensures unhampered audio playback. The cable sheath not only serves aesthetic purposes, it also protects the internal structure from mechanical damage. This sheath is made of versatile and flexible PVC, ideally suited to this purpose. In addition, the cable is covered with a textile braid, providing further protection to increase its durability. The 24K gold plating of the plugs is of crucial importance: gold is a very soft material and evens out tiny irregularities. This leads to an enlarged contact surface and reduces undesirable transition resistance. In addition, the precious metal offers long-lasting protection against corrosion, so increasing the service life of the cable. Another important aspect is the conductor cross-section of 24 AWG, which helps to transmit the sound with greater clarity and detail, especially in the lower bass frequency ranges. This enables a more efficient transmission of electrical current and minimizes the resistance in the cable. Overall, the Premium Y-subwoofer cable is a first-class choice for audiophile users looking for the highest quality of audio transmission.
Sub-Y
The Star Y-subwoofer cable reduces sound loss thanks to its dense shielding and thick inner conductor. The 24k gold-plated metal contacts maintain the quality of the connections.
Exzellenz II Dual Coaxial
The Exzellenz II cable with the dual coaxial structure is the bulk cable for the following: 006041007, 00604202 and 006044007. The cable has double shielding to protect it from interference such as EMC radiation. Polyethylene (PE) reduces the capacitance problems of the cables, making the sound even more brilliant and spatial.
The perfect subwoofer cable for deep, powerful bass
Are you looking for the ideal subwoofer cable to unlock the full potential of your sound system? Then you've come to the right place! In our range, you'll find a wide selection of high-quality subwoofer cables that ensure optimal bass reproduction and an impressive sound experience. Use our handy filter to narrow down the results and find the right subwoofer cable for your needs. Whether you are looking for a RCA cable with special features or need an adapter – you will find the right item here. Benefit from our expertise and discover the world of perfect bass!
Why is a high-quality subwoofer cable important?
A subwoofer is responsible for reproducing low frequencies and contributes significantly to the powerful and dynamic sound of your audio system. Bass gives movies and music the depth and intensity they need. To fully exploit this potential, a high-quality subwoofer cable is essential. An inferior cable can negatively affect the sound by weakening or disrupting the signal. The result is weak, undefined bass that detracts from the overall listening experience. With a high-quality subwoofer cable, on the other hand, the signal is transmitted from the A/V receiver to the subwoofer without loss, resulting in precise, deep and powerful bass. With a subwoofer cable from in-akustik, you'll experience the difference! Enjoy significantly improved sound and a more intense listening experience.
What should you look out for when buying a subwoofer cable?
Choosing the right subwoofer cable depends on various factors. In addition to the cable length, the quality of the material and the workmanship also play a decisive role. Here are some important points to consider when buying:
- Cable length: Choose a cable length that is long enough to allow you to position the subwoofer flexibly in the room. However, cables that are too long can cause signal loss. Therefore, measure the required area carefully before buying.
- Material quality: High-quality conductors made of copper or silver-plated copper ensure optimal signal transmission and minimize losses. Pay attention to the information on the cable construction and material quality.
- Connector quality: The RCA connectors should be robust and well made to ensure a secure contact and optimal signal transmission. Gold-plated RCA connectors provide additional protection against corrosion and improve conductivity.
- Shielding: Good shielding protects the signal from external influences and prevents noise. Look for dense and effective shielding.
- Flexibility: The cable should be flexible enough to allow for easy routing, without kinking or breaking.
What is the difference between a mono subwoofer cable and a Y-subwoofer cable?
You should use a Mono Subwoofer Cable such as the s S25 Mono-Sub receiver has a single subwoofer output (often labeled “Sub Out” or “LFE”) and your subwoofer has a mono input. This is the most common configuration and is sufficient in most cases, since subwoofer signals are generally mono.
A Y-Subwoofer Cable such as the S25 Y-Sub is used when you have a single subwoofer output on the AV receiver, but your subwoofer has two inputs (usually labeled L and R). The advantage of a Y-cable is that it boosts the signal by about 3 dB, resulting in a slightly louder output signal at the subwoofer. This can be useful if you feel your subwoofer needs more input signal.
It is important to note that even if your subwoofer has two inputs, using a Y-cable is not mandatory. Choosing between mono and Y subwoofer cable will not affect sound quality, but will only affect signal strength.
Connecting subwoofer cable properly
Connecting a subwoofer cable is usually simple and straightforward. Connect the RCA plug of the cable to the subwoofer output of your A/V receiver (often labeled “Sub Out” or “LFE”). The other end of the cable is connected to the RCA input of the subwoofer. Make sure the plugs are firmly seated. Some subwoofers have two RCA inputs. In this case, you usually only use one of the two inputs.
Our range of subwoofer cables
Our range includes a wide selection of high-quality subwoofer cables in various lengths and designs. Whether you are looking for a simple RCA cable to connect your subwoofer or a high-end cable that meets the highest standards, you will find it here. Our cables are known for their quality and reliability. Use the filter to narrow down the results according to your preferences. For example, you can filter by cable length, price or material. You will find detailed information on the technical data and properties for each article. So you are guaranteed to find the perfect subwoofer cable for your home theater system or stereo – and your budget.
Use our expertise
We are experts in home theater, high-end and hi-fi and are happy to advise you on choosing the right subwoofer cable. If you have any questions, please feel free to contact us. We are happy to help you find the perfect subwoofer cable for your needs. Treat yourself to a high-quality subwoofer cable and experience the difference! Clear, powerful and precise bass will take your home theater experience to a new level. See the quality of our products for yourself and order your new subwoofer cable today.
Subwoofer cables FAQs
A subwoofer cable is technically a low-frequency-optimized RCA cable that has been specially developed for transmitting the LFE (low frequency effects) signal. Unlike conventional RCA cables, it usually has:
- better shielding (usually double or multiple) to minimize interference signals and ground loops, which are particularly audible in the low frequency range,
- low capacitance per meter to prevent signal loss over longer distances (often 5–15 m),
- and often more robust connectors with a tight fit to avoid contact resistance.
In short: Subwoofer cables are designed for long signal paths and interference-free bass transmission, while standard RCA cables are usually optimized for short, broadband signal paths (e.g., CD player → amplifier).
Yes. Subwoofer cables with RCA connectors are universally compatible, as the LFE or line input on almost all active subwoofers is implemented via RCA sockets (mono or stereo). However, it is important to select the correct connectionon the subwoofer:
- For models with a dedicated LFE input, a single mono RCA cable is sufficient.
- If only stereo line inputs (left/right) are available, a Y-RCA cable (1× RCA to 2× RCA) can be used to distribute the signal symmetrically to both channels.
The only exception is active studio subwoofers with XLR inputs. Here, appropriate RCA–XLR adapter cables or balanced cables are required.
Yes, but only if the subwoofer is designed for this purpose. Some subwoofers offer high-level or speaker-level inputsin addition to RCA inputs.
In this case, the amplified signal from the amplifier output is fed in via speaker cables. The subwoofer's internal input circuitry reduces this signal back to line level and uses it for the internal power amplifier.
However, connecting a subwoofer without high-level inputs directly to speaker cables can damage the device, as the high-level signals are too strong for line inputs.
Connection via speaker cables (high level) is useful if:
- the amplifier does not have a dedicated subwoofer or pre-out,
- or the subwoofer is to act identically in terms of phase and sound to the signal from the main speakers (e.g., in purely analog stereo systems).
The high-level connection ensures that the subwoofer receives exactly the same signal as the speakers, including the tonal characteristics of the amplifier.
Well-known manufacturers with high-level options include:
- REL Acoustics
- Bowers & Wilkins (some ASW models)
- Velodyne (older models)
- XTZ and BK Electronics
However, for home theater receivers or modern AV systems, the line/LFE connection via RCA is the preferred solution.
A mono RCA cable transmits a single LFE signal (low frequency effects) from the source to the subwoofer – ideal if the subwoofer has a dedicated "LFE IN" or "mono input" connection.
A Y RCA cable (1× RCA to 2× RCA) splits this signal between two inputs ("Left" and "Right"). This can have the following advantages:
- some subwoofers recognize a stronger input signal,
- the internal summing amplifier works more stably,
- and the automatic switch-on function reacts more sensitively.
There is no difference in sound as long as the subwoofer sums both inputs internally. The Y-adapter is primarily used for signal level adjustment and compatibility.
High-quality, well-shielded subwoofer cables can be used up to 15 meters in length without audible loss. From approx. 20 m, depending on the cable routing and environmental influences, interference or humming noises may occur. In such cases, balanced cables (XLR) or isolating transformers are recommended.
A hum is usually caused by ground loops in the signal path (e.g., between the AV receiver, TV, and cable connection).
Remedies:
- Sheath current filters or ground loop isolators,
- shared power supply for all devices on the same power strip,
- and the use of a high-quality shielded subwoofer cable with low impedance.
The S25 Subwoofer Cable is specially designed for the lossless transmission of low-frequency signals in home theater and hi-fi setups. Its elegant, unobtrusive design and high flexibility allow for discreet and easy integration into any system. The signal conductors, made of highly pure, oxygen-free OFC copper, are insulated with foamed polyethylene - a dielectric with an especially low constant that minimizes signal loss and ensures precise, dynamic bass reproduction. The symmetrical construction with separate conductors for signal and ground, along with dense, interference-free shielding, effectively protects against disturbances from Wi-Fi, Bluetooth, or mobile signals. The tightly woven copper braid made from 186 strands ensures clean signal transmission even in demanding environments. Robust solid metal connectors with gold-plated contacts provide consistently low contact resistance and a reliable connection - even after many plug cycles. Each cable is handcrafted in our workshop and individually tested to guarantee the highest quality and long-lasting performance. Click here to discover exciting details
The S25 Subwoofer Cable is specially designed for the lossless transmission of low-frequency signals in home theater and hi-fi setups. Its elegant, unobtrusive design and high flexibility allow for discreet and easy integration into any system. The signal conductors, made of highly pure, oxygen-free OFC copper, are insulated with foamed polyethylene - a dielectric with an especially low constant that minimizes signal loss and ensures precise, dynamic bass reproduction. The symmetrical construction with separate conductors for signal and ground, along with dense, interference-free shielding, effectively protects against disturbances from Wi-Fi, Bluetooth, or mobile signals. The tightly woven copper braid made from 186 strands ensures clean signal transmission even in demanding environments. Robust solid metal connectors with gold-plated contacts provide consistently low contact resistance and a reliable connection - even after many plug cycles. Each cable is handcrafted in our workshop and individually tested to guarantee the highest quality and long-lasting performance. Click here to discover exciting details
The Exzellenz mono subwoofer cable has two separately routed shields. This optimally protects the sensitive audio signals against external interference. The silver-plated conductor transports the analog music signal extremely precisely and enables a crystal-clear and dynamic sound even with high-resolution audio formats. The solid, 24k gold-plated full metal plugs ensure optimum contact and minimal contact resistance on a long-term basis.
The Premium subwoofer cable offers impressive sound quality thanks to its high copper content, ensuring powerful and dynamic sound. Thanks to its double shielding, external interference is reduced to a minimum, while the robust cable sheath protects the internal structure from mechanical damage. The cable uses PVC, a versatile and flexible material perfect for this purpose. Additional protection is provided by the textile braiding that encases the cable. 24K gold plating ensures optimum conductivity: gold evens out any tiny irregularities and enlarges the contact surface. This serves to reduce undesirable transition resistance and protects the contact surfaces from corrosion in the long term. The conductor cross-section of the cable is 24 AWG, which helps to transmit sound with greater clarity and detail, especially in the lower bass frequency ranges. This enables a more efficient transmission of electrical current and minimizes the resistance in the cable. Overall, this subwoofer cable delivers outstanding audio quality for discerning audio fans.
The Star Y-subwoofer cable reduces sound loss thanks to its dense shielding and thick inner conductor. The 24k gold-plated metal contacts maintain the quality of the connections.
