DC 10-24V Subwoofer Pre-board Single Power Supply Low-pass Filter Board

$15.99
  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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  •   Shipping Methods

    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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Features:

1. All components are selected from brand-new first-class products, the frequency adjustment capacitors are original CBB capacitors, the adjustment potentiometers are Taiwan-made fully sealed type, and the input and output terminals are pure copper terminals, which is very convenient for wiring.
2. Dezhou NE5532 is selected as the op amp, and the IC socket can be replaced at any time, so you can feel the effects of different op amps and improve the playability.
3. The LED indicator is designed to monitor the power supply status in real time.
4. The PCB design of this board is simple and beautiful, and the wiring is reasonable, which makes this board have a very high signal-to-noise ratio and strong anti-interference ability. When there is no signal input, close to the speaker almost no noise can be heard.
 
Parameters:

Product Name: Single power supply low-pass filter board, subwoofer front panel
Power supply voltage: DC10-24V single power supply direct current
Frequency range: 22Hz-300Hz
Audio input: single channel or dual channel
Audio output: mono
PCB specification: 78x32mm, thickness: 1.6mm
PCB material: ultra-hard FR-4 glass fiber board
Net weight of finished board: 30g
Center spacing of plate fixing holes: 70x24mm, hole diameter: 3.2mm
Center distance between potentiometer axis: 32.5mm

Package included:

1 x  Subwoofer Pre-board (finished board)

Special reminder:

This board is a subwoofer pre-amplifier, directly connected to the speaker, it will not produce sound. It must be connected to a pure post-amplifier board to make an active subwoofer to produce sound. The power of the pure post-amplifier board is shocking according to personal needs. The degree of selection, the greater the power of the pure power amplifier, the more shocking the bass effect. The so-called low-pass filter board filters out the high-pitched part above the human voice, and retains the low-frequency part to amplify to increase the bass reproduction strength. Human voice and high-frequency instrument sound will not be heard during playback. Buyers must understand this knowledge to avoid not knowing how to use it after buying it.

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Product ID: 11482815 Category:
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