Both work well; the right choice depends on distance, impedance, and power. Thicker wire (lower AWG number) has less resistance.

• Short runs (under ~50 ft) with 8‑ohm speakers: 14 gauge is typically sufficient for home theater or stereo setups.
• Longer runs, 4‑ohm speakers, or higher power: 12 gauge can help minimize loss over distance and under heavier loads.
• Subwoofers or outdoor runs: Lean thicker (12 gauge) for current‑heavy needs or added margin.
• In‑wall installs: Choose CL2/CL3 rated cable if required by local code.

Tip: Measure from receiver to speaker with a little slack for routing, and keep connections tight and polarity correct.

It can help in certain setups, but results vary. Thicker wire (like 12 gauge) has lower resistance than thinner wire (like 16–18 gauge), which can reduce power loss.

• More likely to matter: Long cable runs, low‑impedance speakers (4 ohms), and higher‑power systems.
• Less likely to matter: Short runs with typical 8‑ohm speakers at moderate volume.

Before upsizing, make sure polarity is correct and connections are secure—those basics often have a bigger impact than the last step in gauge. If you’re unsure, choosing a practical gauge for your run length is a sensible, cost‑effective approach.

10 gauge is very thick, so it’s usually reserved for long runs or high‑current situations. For most living rooms with 6–8 ohm speakers and moderate distances, 12–14 gauge is commonly used.

• When 10 gauge may help: Very long cable runs, low‑impedance speakers, or high‑power subwoofers.
• Potential downsides: Bulkier, less flexible, and may not fit spring‑clip or small binding posts as easily.

If you’re dealing with typical home theater distances, a more manageable gauge often balances performance and ease of installation. Check your speaker and receiver terminals to confirm what size they accept.

OFC (oxygen‑free copper) is pure copper, offering lower resistance and better durability. CCA (copper‑clad aluminum) is lighter and more budget‑friendly but has higher resistance for the same gauge.

• Best use for OFC: Longer runs, low‑impedance speakers, in‑wall or outdoor installs where durability and conductivity are priorities.
• Best use for CCA: Shorter runs and cost‑conscious setups where a slightly thicker gauge can offset resistance.
• Code considerations: Some locations or applications may prefer copper for in‑wall use; look for CL2/CL3 ratings and verify local requirements.

Either can work when matched appropriately to distance and load.

Both work; the better choice depends on your gear and how often you reconnect.

• Banana plugs: Quick connect/disconnect, tidy installs, and fewer stray strands. Useful if you move gear or swap speakers.
• Bare wire: Cost‑effective and compatible with spring‑clip terminals. Works well for set‑and‑forget setups.
• Fit check: Make sure your receiver and speakers accept banana plugs or prefer bare wire/spades.

Whichever you choose, strip only enough insulation, twist strands neatly, and power equipment off before connecting. A solid, snug connection and correct polarity can help maintain consistent performance.