Hahiyo 80mm Diameter Square Speaker Box Terminal Cup Withstand Higher Sound Pressure Less Resonance Connect Securely Binding Post Connector Black 2 PCS for Subwoofer Box Tower Speakers

Air tight:In the world of sound we need solid pressure to create vibrations,when you slightly push these on your subs,almost no air will escape and no pressure will escape!Therefore they can withstand higher sound pressure levels and are less prone to any unwanted resonance because of vibration,really bringing a prefab box up a notch. Good connections:The brass binding posts give you more connection options and better connections.You can use banana plugs,spades,rings or you can wrap bare wire around them or insert it into the side hole,fully and securely.Great for a box that gets move regularly,remain tight so they doesn't vibrate off and cross connect with the other wire. Install easily:The holes for the mounting screws are countersunk appropriately and the baffle is a nice touch as well.The screw terminals to tighten onto spade connectors or bare wire can easily tighten or loosen with fingers,make your speaker hook up a lot easier.The polarity was also marked on the inside of the cup as well as the outside. Durable plastic:These are of high quality plastic to be rigid under high strain.These cups are well-machined,not easy to cause deformation under pressure,holding up ideally in bass sound.Resulted in a super sturdy connection makes them a solid option for replacement of existing terminals or for a hobbyist building their own unique speakers. High compatibility:If you are building your own speakers or have some other project where you need something like these they will work great for you.These use insert wire & screw tight nut-style terminals that are more common on higher end speakers these days.Good to use in an existing subwoofer box or DIY a new construction.