Tellurium Q Ultra Black UB-SC Speaker Cable
23,00 €
Tellurium Q Ultra Black UB-SC is a 1 m speaker cable for connecting an amplifier to a passive speaker. It carries a speaker-level signal and therefore does not replace an RCA or XLR line-level cable. The model designation is printed on the cable, helping distinguish it from the visually similar Blue Diamond model. Before purchasing, confirm the cable quantity and end termination, and measure the complete installation route.
Tellurium Q Ultra Black UB-SC is a 1 m speaker cable designed to connect an amplifier to a passive speaker. It carries a speaker-level signal and is not intended for standard RCA or XLR line-level connections.
This cable is suitable for short runs where the amplifier is positioned close to the speaker. Before purchasing, measure the entire route the cable will follow. The straight-line distance between the components does not account for shelves, furniture, equipment enclosures, or bends along the route.
Purpose in an audio system
The cable connects the speaker output of an amplifier to the terminals of a passive speaker.
In a stereo system, each channel requires a separate cable run. The left-channel cable connects the amplifier to the left speaker, while the right-channel cable connects it to the right speaker in the same way.
In a home cinema system, the cable can be used to connect an individual passive speaker. A separate run should be planned for each amplifier channel and its corresponding speaker. Any arrangement involving multiple speakers must always be supported by the amplifier being used.
Construction and model identification
The production version of the cable is thinner and more flexible than the heavy, rigid prototype. This is a relative comparison and does not specify an exact diameter or minimum bending radius.
The model designation is printed directly on the cable. This is important because the outer appearance of Ultra Black and Blue Diamond cables can be similar. The printed marking helps identify the cable before installation and later if the system connections are rearranged.
The UB-SC designation identifies the Ultra Black model. This is not the Tellurium Blue BU-SC cable. Descriptions and claimed sound characteristics associated with other Tellurium Q ranges do not apply to this model.
Choosing the connections
Before purchasing, confirm how the specific cable run is terminated. Its connectors must suit the speaker terminals on both components. The stated length alone does not indicate which connectors are fitted at the ends.
A banana plug requires a compatible opening in the terminal. A spade connector is secured beneath the screw-down section of a binding post. A bare conductor is inserted into the terminal and clamped firmly, with no loose strands left exposed.
Do not choose a connector solely by its appearance. Inspect the terminals on both the amplifier and the speaker first. Suitable termination allows the cable to be connected without adapters or unnecessary mechanical strain.
Planning the length and cable route
Measure from one terminal to the other, following the route the cable will actually take around shelves, furniture, and equipment cases. Allow a small amount of spare length for making the connections and moving the equipment slightly when required.
A one-metre run is unsuitable if the measured route uses its entire length. A cable pulled tight places strain on the connections and makes equipment harder to move. Some allowance also helps prevent excessively sharp bends close to the terminals.
Do not trap the cable beneath furniture legs or route it across a doorway. Avoid sharp bends and pulling forces at the connectors. Leave enough room behind the equipment for the cable to curve naturally.
If the routes for the two stereo channels are different, measure each one separately. Do not select the required length solely from the shorter route. Both cables must reach their terminals without being stretched.
Connection and polarity
Switch off the amplifier before connecting the cable. Connect its positive terminal to the positive terminal on the speaker. The amplifier’s negative terminal must likewise be connected to the speaker’s negative terminal.
Maintain the same polarity for both stereo channels. Reversed polarity at one speaker can weaken the central stereo image and bass reproduction. The cable marking helps you use the same conductor side consistently throughout the installation.
Tighten the terminals securely, but do not apply excessive force. The weight of the cable should not pull on a plug or clamped conductor. After completing the connection, check that there is no contact between the positive and negative terminals.
Quantity and configuration
The “1 m” designation describes the cable length, not the number of cables supplied. Before ordering, confirm whether the offer includes one cable run or a stereo pair. This is particularly important when planning a two-channel system.
Also confirm the termination required at both ends in advance. The amplifier and speaker may use terminals of different designs, so one end of the cable may require a different connection method from the other.
Technical specifications
| Manufacturer | Tellurium Q |
|---|---|
| Model | Ultra Black UB-SC |
| Product type | Speaker cable |
| Length | 1 m |
| Purpose | Connecting an amplifier to a passive speaker |
| Connection level | Speaker-level connection |
| Model identification | Model designation printed on the cable |
| Production-version construction | Thinner and more flexible than the heavy, rigid prototype |
FAQ
How can I identify the Ultra Black UB-SC?
The model designation is printed on the cable, helping distinguish it from the similarly styled Blue Diamond.
How do I determine whether the selected length is sufficient?
Measure the actual route around furniture and shelving. Add some allowance for bends, connection access, and minor equipment movement. The cable must not be left under tension.
Does a stereo system require two cables?
Yes. Each passive speaker requires a separate cable run. The length designation does not define the quantity included, so confirm this before purchasing.
Which cable termination should I choose?
The decision depends on the amplifier and speaker terminals. Banana plugs, spade connectors, and bare conductors are attached in different ways. Confirm the termination of the specific cable run before ordering.
Can this cable be connected to RCA or XLR sockets?
No. It is intended for a speaker-level connection between an amplifier and a passive speaker. RCA and XLR sockets use line-level cables.
How do I maintain correct polarity?
Connect the positive terminals of the amplifier and speaker to each other, then connect the two negative terminals. Follow the same arrangement for every channel.
Is the cable suitable for a home cinema system?
It can connect an amplifier channel to its corresponding passive speaker. Plan a separate cable run of the required length for each speaker.
How should the cable be routed behind the equipment?
Leave room for a natural curve and avoid placing strain on the connections. Keep the cable away from furniture pressure points, sharp bends, and doorways.
