Add to favorites
Coliao 2pcs 400W Adjustable Speaker Crossover 2 Way Treble/Bass 2 Unit Audio Frequency Divider Distributor Filters Updated Version
Brand: Coliao
Condition: Used
$1355
$1489
-9% Save $134
Updated: 2 days ago
Description
400W Ajustable Multi Speaker Treble / Bass 2 Unit Audio Frequency Divider 2 Way Crossover Filters
Large capacity, reasonable design, beautiful appearance, quality achieve full self control
Inductance adopts anaerobic copper winding , and pure copper wire
The crossover soprano + available bass binary frequency sound box, can also be used in 2.1 the high small satellite box and automotive loudspeakers
Implementing overall debugging, using very convenient, and listening to the sound effects can implement debugging control according to their own interests
Details about jumpers:
Jumper A, B are used to control audio effect of bass range. A for lower limit while B for upper limit of the bass audio range. For some speakers, when Bass is turned up too much, the speaker will show distortion. When that happens: we remove the jumper cap of jumper A to limit super low Bass to bring distortion lower. When we remove the cap of jumper B, Bass is increased while cap of Jumper B is on, Bass is decreased. Jumper C and D are used to control Treble range. When cap of both jumper C and D are on, the sound of treble is loudest. When only cap C is on, the treble sound is lower. When only cap D is on, further lower. When both caps of C and D are removed, there is no treble sound. (Generally speaking, with the four jumpers, you'd sooner or later find your best sound effect. Anyway, all effects still depend on your actual test.)
How to use the splitter board:
First connect as per our diagram above (Treble, Low, Input), connect to speaker, seal air gap, we can begin to hear music while optimize.
Normally we use jumper A and let B idle. For jumper C and D: we need to hear the actual effect of treble. A general formula is: A+D=better Bass; A+C=clear Treble and Bass; A+CD=clear Treble and Bass (the overall effect inclined towards Treble); AB+CD=more mediant frequency. When Bass effect is unnecessarily high, we can remove cap A. Please optimize until you think the sound is best, and then fix the board with your speaker unit.
Specifications
Size: 7*5*2.5cm (LWH)
Suitable for Speaker Power: 400W or lower
Suitable for Speaker Impedance: 4 to 16 ohm
With 4 jumpers onboard to optimize your audio effect: Jumper A, B for bass; Jumper C, D for treble.
Package included:
2* 400W Speaker Crossover Frequency Divider Filters
Jumper A, B are used to control audio effect of bass range. A for lower limit while B for upper limit of the bass audio range. For some speakers, when Bass is turned up too much, the speaker will show distortion. When that happens: we remove the jumper cap of jumper A to limit super low Bass to bring distortion lower. When we remove the cap of jumper B, Bass is increased while cap of Jumper B is on, Bass is decreased. Jumper C and D are used to control Treble range. When cap of both jumper C and D are on, the sound of treble is loudest. When only cap C is on, the treble sound is lower. When only cap D is on, further lower. When both caps of C and D are removed, there is no treble sound. (Generally speaking, with the four jumpers, you'd sooner or later find your best sound effect. Anyway, all effects still depend on your actual test.)
How to use the splitter board:
First connect as per our diagram above (Treble, Low, Input), connect to speaker, seal air gap, we can begin to hear music while optimize.
Normally we use jumper A and let B idle. For jumper C and D: we need to hear the actual effect of treble. A general formula is: A+D=better Bass; A+C=clear Treble and Bass; A+CD=clear Treble and Bass (the overall effect inclined towards Treble); AB+CD=more mediant frequency. When Bass effect is unnecessarily high, we can remove cap A. Please optimize until you think the sound is best, and then fix the board with your speaker unit.
Specifications
Size: 7*5*2.5cm (LWH)
Suitable for Speaker Power: 400W or lower
Suitable for Speaker Impedance: 4 to 16 ohm
With 4 jumpers onboard to optimize your audio effect: Jumper A, B for bass; Jumper C, D for treble.
Package included:
2* 400W Speaker Crossover Frequency Divider Filters
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b09pbpdfy5
- Model:
- Coliao-400W Speaker-01
- Country:
- US
- ASIN:
- B09PBPDFY5
- UPC:
- 701715495890
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $1 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Coliao products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
More refurbished Coliao deals
Updated daily from Amazon, Reebelo, and Dyson.
