KENWOOD KAC-648S 280W Max Power 4/ 3/ 2 Channel Car Amplifier

Item Description:

-Good condition.  Very few scuffs/scrapes.

-Measures approximately 11.25" x 8.25" x 2.25".

-About the Kenwood KAC-648S

Kenwood's KAC-648S 4-channel amp features selectable high-pass (150 Hz) and low-pass (80 Hz) crossovers, front and rear. And you'll have multiple hookup options. Drive 2 pairs of stereo speakers, or bridge the 2 rear channels to power your subwoofer, and use the 2 front channels for your main stereo pair.

Photos shown are of the exact item(s) you will receive; see photos for condition details.

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This 4-channel Kenwood is built with MOSFET-switching power supplies for fast response, maximum output, and cooler operating temperatures. Larger-than-usual noise-suppression filters make sure that all you hear is music. Speaker-level inputs allow easy connection to any head unit.

Details:

     *2-, 3-, 4-channel, or Tri-Way output

     *70 watts x 2 in bridged mode

     *35 watts x 4 at 2 ohms

     *requires 10-gauge power and ground leads — wiring and hardware not included with amplifier

     *anti-thump circuit for quiet turn-on

speaker short, thermal overload, and DC protection

     *extra-large toroidal noise filters

     *speaker-level inputs

     *gold-plated preamp outputs

     *80 Hz selectable low-pass crossover, 12 dB/octave

     *150 Hz selectable high-pass crossover, 12 dB/octave

     *10-3/4"W x 2-1/4"H x 11-1/2"DFeatures & specs

Performance:

     *RMS Power Output (Watts x Channels) 25 x 4

     *Peak Power Output (Watts x Channels) 50 x 4

     *Power at 2 Ohms (Watts x Channels) 35 x 4

     *Power at 1 Ohm (Watts x Channels) ---

     *Bridged Power (Watts x Channels) 70 x 2

     *Minimum Impedance Bridged 4

     *Minimum Impedance Unbridged 2

     *Minimum Impedance 2

     *Best Frequency Response 10-45k Hz

     *THD at Rated RMS Power 0.08%

     *Signal to Noise Ratio 100 dB

Features:

     *Amplifier Class AB

     *Low-Pass Crossover Frequency 80 Hz

     *Low-Pass Slope (dB/octave) 12 dB

     *High-Pass Crossover Frequency 150 Hz

     *High-Pass Slope (dB/octave) 12 dB

     *Bass Boost No

     *Bass Boost Frequency N/A

     *Fan Cooled No

     *Fuse Rating 25 x 1

     *Speaker Level Inputs ---

     *Preamp Outputs 1 pair Gold RCA

     *Width (inches) 10-3/4

     *Height (inches) 2-1/4

     *Depth (inches) 11-1/2

Specifications:

     *Max Power Output (4 ohms):

     *4 Channel Operation: 50 Watts x 4

     *3 Channel Operation: 50 Watts x 2 + 140 Watts x 1

     *2 Channel Operation: 140 Watts x 2

Rated Power Output (4 ohms):

     *4 Channel Operation: 25W x 4 (20-20kHz, 0.08% THD)

     *3 Channel Operation: 25W x 2 (1 kHz, 0.08 THD) + 70W x 1(1kHz, 0.8%THD)

     *2 Channel Operation: 70W x 2 (1 kHz, 0.8% THD)

     *Rated Power Output (2 ohms):

     *4 Channel Operation: 35 Watts x 4 (1kHz, 0.8% THD)

Features;

Protection Circuitry activates:

     *When a speaker output contacts ground

     *When the temperature of internal parts exceeds 120 degrees Celsius (248 degrees Fahrenheit)

     *When a ground cable of the center unit or this amp is not connected to a metal part serving as an electrical ground passing electricity to the battery's negative terminal.

Controls on the Unit:

     *Two Input Sensitivity controls (variable)

     *Two Operation Switches (stereo/mono)

     *Two Filter Switches: High pass (Fixed at 150 Hz, 12 dB/Octave, works on speaker outputs), OFF, Low pass (Fixed at 80 Hz, 12dB/Octave)

     *Input Selector (A/B, A): You can use a source unit with two pairs of RCA outputs, or to use just one pair of RCA inputs which are amplified by all channels.

Inputs and Outputs;

     *Connections on the Unit (All are gold plated):

     *Battery, Ground, and Remote connectors

Speaker Outputs

Speaker Level Inputs:

     *Line In (Preamp)

     *Line Out (preamp) to connect another amp - this is a full range output.