Impedance: 4-8 ohm, Color: Black, Audio Encoding: Mono, Material: Aluminum Alloy Panel, Gross Weight: 641g, Voltage: DC 12V, Max Power: 600W, Size: 170x145mm.
Price history, coupons and price alert are available on this page. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. This is new product in my database, so I don’t know if this price is good.
Link: Banggood product page
1. ($26.34): BGLMQ15
2. ($27.27): BGSCM11
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGCarAud4, BG845979
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $25.19).
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).