4W High-power Miniature Speaker

Code: N25KJ

  • 40mm x 28mm rectangular speaker
  • High power up to 4W
  • Low profile, paper and cloth cone speaker with (Neodymium Iron Boron Nd-Fe-B) magnet

Product details

4W High-power Miniature Speaker

• 40mm x 28mm rectangular speaker
• High power up to 4W
• Low profile, paper and cloth cone speaker with (Neodymium Iron Boron Nd-Fe-B) magnet• Designed primarily for use in sirens and buzzers
• RoHS compliant
• Easy to mount with 4 fixing holes

Rated impedance: 4 ±15% Ω
Rated power: 2.0 W
Maximum power: 4.0 W
Resonant frequency: 380 ±20% Hz
Rated sound output @1W/1m: 84 ±3 dB
Frequency range: 0-20 kHz
Cone material: Paper and cloth
Housing material: ABS
Weight: 12 g ±5%

w do you sell a sound box to enclose the speaker back in 

Asked by: welsh wizard
Unfortunately i am sorry but the item in question doesn't support use in you intended application.
Answered by: darren cordon
Date published: 2017-02-17

would these speakers be ok for a docking station/mp3 player?

Asked by: bobfish
You can task the speakers to any usage you see fit, however we are unable to advise on any project or circuit design.
Answered by: Les
Date published: 2016-09-15

The speaker is listed as 40mm x 28mm border dimensions, but how deep is the speaker?

Asked by: Rich
This information is presented in the user guide/datasheet for the device, which can be found on the downloads tab of the product listing. However if you are using a mobile phone or tablet to view our website it may not be visible. To this end I have copied in a link to the electronic version of the instructions as well as a brief summary of the requested information below for your convenience. The speaker is 11.5mm deep
Answered by: Les
Date published: 2016-12-21

Can this speaker be connected to a Bluetooth module, if so what resistors and capacitors would i need with them

Asked by: Harry
As much as we would love to be able to help here, we cannot offer design project advice or assistance, we are more than happy to locate products and support you with your purchases but we are not able to design entire circuits or projects for you. If you do have the design/circuit information detailing the value of the components needed we will be happy to locate these for you.
Answered by: Billy
Date published: 2016-03-08

Can I have a formal datasheet by email of this speaker please? I need to see the SPL vs Frequency response graph. Tnx.

Asked by: shmuel
I have sent a copy of the data sheet to the email address provided.
Answered by: Dominic
Date published: 2015-07-17
  • y_2017, m_6, d_23, h_13CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_GB, sid_N25KJ, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb

Bulk Prices

Item code Item name Quantity Price
N25KJ 4W High-power Miniature Speaker (1+) £3.79

Why not tell us and our B2B sales team about your specific business needs and expectations?

At Maplin, we’re always looking for innovations and technology that can help your business work more efficiently.

With a dedicated business team and special services available only to business customers, you can access our electronics and technology solutions through our wide network of over 200 stores, our website with more than 20,000 products or though your personal account manager over the phone.

Working with organisations for nearly 30 years, Maplin offers a nationwide range of benefits to our business users:

  • 30 day EOM credit account
  • volume discount pricing
  • online and in-store use of account
  • one-to-one account management
  • bespoke product sourcing and branding
  • free delivery on orders over £10
  • scheduled and forward ordering service

Contact our business team on 

0333 400 9740 to open an account or discuss your business needs.

To receive your free copy of the Maplin Catalogue just call 0333 400 9740.


  • Home Delivery
  • Click & Collect