Wholesale K-908A 4” 8ohm stereo best sound active bluetoooth speaker

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K-908A 4” 8ohm stereo best sound  active bluetoooth speaker

01

Product category

K-908A 4” 8ohm stereo best sound active bluetoooth speaker

Features:

  • 4 inch Active bluetoooth 8ohm ceiling speaker.
  • TWO way ceiling speaker,20mm cone woofer,13mm silk film tweeter
  • 1-way line input 30s no audio input
  •  it is will be cut down the power 1 active connect 3 passive with stereo best sound

03

DATA INFORMATION

ITEM

K-908A

K-916A

RMS POWER

4×20W

4×20W

MAX POWER

30W

40W

DC POWER

DC 15V/2A

DC 15V/2A

IMPEDANCE INPUT

SENSITIVTY

92±3dB

92dB±3dB

FQ RESPONSE

90-18Khz  ±3dB

90-18Khz  ±3dB

LOUDSPEAKER

4“(Φ110mm)20/13mm cone

5.5“(Φ135mm)20/13mm cone

OUTSIDE SIZE

170×75mm

188×80mm

HOLE SIZE

Φ150mm

Φ165mm

INNER BOX SIZE

180×180×102mm

200×200×110mm

MATERIAL

ABS

ABS

COLOR

WHITE

WHITE

N.W.

0.72kg

1.04kg

04

PRODUCT DETAILS

05

installation drawings

How to install

  • Installation schematic:


    1. On the ceiling,holes are opened according to the mounting size,connect the cable to the terminal.


    2. Remove the grille and carefully place the speakers  in the mounting holes.


    3. Use a screwdriver to lock the mounting bracket and install the grille.

  • Dimensions

  • Circuit schematic:

  • Wiring instructions:

    The amplifier output COM needs to be connected to the black wire when wiring, and the amplifier 8Ω output is connected to the required corresponding wire.

06

Packing


inner box


carton

Packing list

ITEM

SIZE(cm)

PCS/CTN

CBM (m3)

N.W. (kg)

G.W. (kg)

20GP(pcs)

40HQ(pcs)

K-908

38*38*22.5

8

0.032

5.76

7.26

6504

16504

K-916A

42*42*24.5

8

0.043

8.32

10.32

4840 12280

Accessories:

Required

——

Matching

——

07

THE SCENARIO


SCHOOL


MEETING ROOM


BUSINESS-CLUB


SHOPPING MALL


AIRPORT/METRO


LIVING ROOM

08

COMPANY INFORMATION

PANORAMA

PANORAMA

Injection

Injection

TRANSFORMER

TRANSFORMER

LOUDSPEAKER

LOUDSPEAKER

Electronic PCB

Electronic PCB

Assembly

Assembly

inspection room

inspection room

Silence room

Silence room

sample room

sample room

09

Certificate

  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate

Ningbo Cooma Acoustics Co., Ltd.

Ningbo Cooma Acoustics Co., Ltd. is a K-908A 4” 8ohm stereo best sound active bluetoooth speaker Suppliers and K-908A 4” 8ohm stereo best sound active bluetoooth speaker Company, mainly producing ceiling speakers, wall speakers, column speakers, Bluetooth speakers, power amplifiers, mixer amplifiers and other public broadcast peripherals and intelligent speakers.

The company was founded in 2009, plant area of 15,000 square meters, the existing more than 200 employees, the company in the entire daily operation process to fully implement the ISO9001 quality management system, to systematize, standardize, standardized operation, to ensure long-term stability to provide high-quality products. Our products have CE, ROHS2.0, IP65 and other international safety certifications, which can meet the mandatory requirements of customers around the world for various safety certifications.

The company gives priority to the introduction of fully automated speaker unit production lines, reducing the accumulation of products in progress, streamlined production to ensure that each unit has a high yield and consistency, which is not only a strong guarantee for product production delivery, but also a strong guarantee for product quality.

Today's Cooma has become a professional audio production enterprise integrating R&D, production, sales and service, always taking high-quality guarantee and professional service as the brand commitment, taking the long-term value of customers as the brand core, adhering to the development concept of product quality, production scale, operation specialization, business regionalization, and management differentiation, tree quality banner, and do high-quality enterprises.

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