COB LED Strip Economy and Bulk | 320 to 528 LEDs Per Metre, 20m Rolls
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| Density | 320 to 528 LEDs per metre |
|---|---|
| Board width | 8mm or 10mm |
| Colour rendering | Ra80 or Ra90 |
| Lengths | Standard reel or 20 metre roll |
- Take Ra90 where the light lands on something you want to look right - timber, food, fabric, skin. Ra80 makes timber look grey and food flat.
- Ra80 is fine for hidden work - stockrooms, plinths, and indirect washes onto a ceiling where nobody examines the surface.
- Work out the total length before buying a 20m roll - it only saves money if you use most of it, though fewer joints on a long run is worth having since every joint can fail.
- Take 24V on anything long - beyond about 16 feet, 12V tape goes visibly dimmer towards the far end. Feed a long run from both ends.
- Fit it in an aluminium channel and size the driver at load plus 20 percent.
- Cut only at the marked points.
Lower output, lower cost, longer rolls
Not every run needs 480 LEDs per metre at Ra90. A cove behind a pelmet, a plinth detail, a long run of shelving in a stockroom — these want an even line of light at a sensible price rather than the highest specification available.
This group covers the economy end: 320 LEDs per metre in Ra80 and Ra90, plus a 20 metre roll of the standard Ra90 tape for large jobs.
What the differences actually mean
| Tape | Rendering | Use it for |
|---|---|---|
| 320 LEDs/m, Ra80 | Adequate | Stockrooms, plinths, hidden coves |
| 320 LEDs/m, Ra90 5W | Good | Low-level accent, shelving |
| 320 LEDs/m, Ra90 8W | Good | General cove and cabinet runs |
| 528 LEDs/m, Ra90 14W | Good, high output | Task light, deep coves |
Where Ra80 is fine and where it is not
If the light lands on anything you want to look right — timber, food, fabric, skin — Ra90 is the lowest worth buying. Ra80 makes timber look grey and food look flat. Where the tape lights a surface nobody examines, or throws light onto a ceiling as an indirect wash, Ra80 saves money without costing anything that shows.
The 20 metre roll
Sold as a continuous length rather than the usual 5 metre reel. On a long run — a perimeter cove, a corridor, a full kitchen — that means fewer joints, and every joint is a point that can fail. Work out the total length first; a 20m roll only saves money if you use most of it.
Voltage drop on a long run
The longer the run, the more it matters. Beyond about 16 feet, 12V tape goes visibly dimmer towards the far end. On a 20 metre roll take 24V, and feed a long run from both ends rather than one.
Related
For higher density and output see our 480 and 600 LEDs per metre COB tape. See also aluminium channels and LED drivers.
