BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually

I purchased two BOSS BRS40 4", 4-ohm, 50-watt speakers for a cigar box speaker-amplifier project. I paired these speakers with a class-d amplifier capable of 30-watts peak/15-watts x 2 RMS. To ensure I had some punch in the bass of these full range speakers, I made a small port in my cigar box speaker-amp. I was surprised in the ample bass response coming from these speakers nestled in a 3.75 in. deep cigar box. The speakers arrived on time and in good condition. I would definitely recommend these speakers to family, friends, coworkers, and acquaintances. I think the price was good and the speaker performance is even better. I am going to purchase these again for similar size cigar box projects. Matter of fact I have two very nice Drew Estates Tabak Especial (Coffee Infused) cigar boxes sitting in my office that will be well suited for this speaker. Unfortunately, I have six other cigar box amps in line before them.

I ordered the 4" speaker to upgrade my A1U cabinet. The quality of the speaker is apparent when compared to the stock ones that come in these cabinets. The sound quality is great. More base and overall clearer sound. Just a heads up to those looking to upgrade their cabs. Check your speaker size before ordering. I have 3 cabs From A1U. Final fight, rampage and mortal kombat. Final fight and rampage are 4" speakers. Mortal kombat is a 3" speaker because of the button layout. I tried to turn it sideways to make it work. Its a little to big. It will stick out and you will not be able to put the control panel back in. I think a 3.5" speaker will fit in the Mortal kombat cab by turning it sideways and drilling new holes.

I bought two of them and one came with coil rub the other was fine but i really like the sound quality it's a good product for the price but easy install with the plates that come with it and it seems relatively reliable I can say it was hard to find a clamp for the wires altogether I'd recommend

Clearly these are not intended to be audiophile quality speakers. But they seem well constructed and work well for my application, as OEM-replacement rear fill speakers. I'm using them behind the seats in my BMW Z3 -- even though they are full-range, they're being driven only in a mid-range capacity by the OEM H-K amp. I'm pleased.

The price vs the quality of these speakers = great value. The paper cone speakers in my SONY Sports Boombox got rained on, then warped and sounded terrible. Based on their specs, these BOSS speakers looked like they would fit. Compared to the OEM speakers, these are more robust with a much bigger magnet. It took a little work to adapt the speaker mounts but the effort was well worth it. I now have a great sounding boom box with truly water resistant speakers. It now has a better frequency range, cleaner sound and higher power handling. These would make great fill-in speakers or to replace some bad 4-inch speakers. For the price you will be very pleased.

The speaker sound quality is ok, but not full range as described. It lacks high end frequency. This was the only speaker I found on Amazon which fit flush inside my speaker enclosure. All other 4" speakers would not mount flush. They had a mid-range tweeter sticking out of the center of the speaker. They are just an old school decent speaker.

Good replacement speaker

If your looking to just replace your old paper cone oem speakers definitely give these a try. They are not going to blow your windows out so don't expect that, but they sound great and almost fit perfectly in the stock location. Only had to enlarge the 4 mounting holes slightly. They were used in an old isuzu vehicross.

車に備え付けのダッシュボードスピーカーの音ががっかりだったので 同サイズのこのスピーカーが意外に格安だったので購入 低音は満足のいく音でした。高音もう少し出てくれると更に良かったのですが 良く見なかった自分が悪かったのですがペア（２個）価格かと思って購入したら １個でした。（慌てて追加購入しました(^_^;)）

Very good base for a cheap speaker very much recommend as good as a good set of speakers

Muito bom, veio bem embalado e sem avarias. Já instalei, ele vem com uma moldura para auxiliar a instalação.

Quedaron perfectas en mi jeep Comanche,buen sonido

suenan bien para el tamaño que tienen tampoco hay que esperar mucha potencia pero de ahi en fuera buena calidad a y otra cosa deberia de especificar mejor que el precio es por bocina o fue mi culpa por talvez no entender pero si deberia decir que es por pieza ya acabo de pedir otra para tener el par