Product Description Speaker Features: Power Handling Per Pair: 300 Watts Peak - 100 Watts RMS. 2-Way Design. Woofer Size: 6.5". Tweeter Size: 1/2". Impedance: 4-Ohms. Sensitivity: 90dB. Frequency Response: 35-21,000 Hz. Cutout Dimensions: 5.18". Top-Mount Depth: 2.5". Pyle Amplifier: Built-in Bluetooth for Wireless Music Streaming 4 Channel Amp System Dual MOSFET Power Supply Marine Grade Construction Waterproof Marine Rating IP-01 Dual Adjustable Input GAIN Level Controls Silver-Plated Speaker Output Terminal Connectors Adjustable Input GAIN Level Control Output Power: 100 Watt x 4 MAX Amplifier Class: AB Fuse Type: 20A Input Impedance: 10k Ohms (Low), 100 Ohm (High) Input Sensitivity: 250mV (Low), 2.5V (High) T.H.D.: <0.04% S/N Ratio: 95dB Power Supply: DC 12V Matching Speaker Impedance: 4-8 Ohms Amp installation kit: Designed tor motorcycles 6 toot length of red and black T-Spec OFC power and ground wire with a T-Spec V8MANL fuse holder and 60 amp fuse protected by a black nylon braid Pre-terminated ring terminals make connections to the battery simple Two 4 foot pieces of 16 gauge OFC speaker wire protected by black nylon mesh makes upgrading the factory speaker wires or adding new speakers a smart choice Even for those upgrading the Harmon Kardon system – the ST-AK8 comes with two 47-ohm 1/2 watt resistors to keep the factory radio outputs active All the necessary installation hardware is included along wtth a 4 × 6 inch hook and loop mounting pad for micro-amplifiers to hold the amplifier securely in place #productDescription { color: #333333; word-wrap: break-word; font-size: small; line-height: initial; margin: 0.5em 0px 0em 25px; } #productDescription_feature_div > h2.default { font-size: medium; margin: 0 0 0.25em; } #productDescription_feature_div > h2.books { color:#333 !important; font-size:21px !important; line-height: 1.3; padding-bottom: 4px; font-weight: normal; margin: 0px; } #productDescription_feature_div > h2.softlines { color:#333 !important; font-size:21px !important; line-height: 1.3; padding-bottom: 4px; font-weight: bold; margin: 0px; } #productDescription > p, #productDescription > div, #productDescription > table { margin: 0 0 1em 0; } #productDescription p { margin: 0em 0 1em 1em; } #productDescription h3 { font-weight: normal; color: #333333; font-size: 1.23em; clear: left; margin: 0.75em 0px 0.375em -15px; } #productDescription table { border-collapse: inherit !important; margin-bottom: 0; } #productDescription table img { max-width: inherit !important; } #productDescription table td { font-size: small; vertical-align: inherit !important; } #productDescription ul li { margin: 0 0 0 20px; } #productDescription ul li ul { list-style-type: disc !important; margin-left: 20px !important; } #productDescription ul ul li { list-style-type: disc !important; margin-left: 20px !important; } #productDescription > ul ul li { list-style-type: disc !important; } #productDescription ul li ul li { margin: 0 0 0 20px; } #productDescription .aplus p { margin: 0 0 1em 0; } #productDescription small { font-size: smaller; } #productDescription.prodDescWidth { max-width: 1000px } P.when('jQuery').execute(function($){ $("#productDescription table").each(function() { var width = $(this).attr('width'); if (width) width += 'px'; else width = 'auto'; $(this).css('width', width); var padding = $(this).attr('cellpadding'); if (padding) padding += 'px'; else padding = '0px'; $(this).css('padding', padding); }); }); #productDescription h3 { margin: 0.75em 0px 0.375em -1px; }