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 AMI Model DD Amplifier Nice Original With Tubes. Jukebox US $90.00 
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 Vintage Jukebox Power Tube Amplifier Hi-Fi Model 1438 Rockola 1953 US $11.50
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 Rowe AMI Model R-92 Jukebox Amplifier 130 Watt Working N/R!!!!!!!! US $25.00
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 WURLITZER 524 Jukebox AMPLIFIER for model 1700 Jukebox TUBE TYPE AMP US $250.00
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 WURLITZER 530 Jukebox AMPLIFIER for model 1900 - 2000 - 2100 US $275.00
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 WURLITZER MONO TUBE TYPE JUKEBOX AMPLIFIER AMP CAP CAPACITOR KIT FOR ANY MODEL US $59.95
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 WURLITZER JUKEBOX MODEL 1100 INTERIOR INSTRUCTION SHEET MODEL 506 AMPLIFIER US $12.99
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 Wurlitzer Amplifier Model H84 Jukebox US $45.00
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 Vintage Original Wurlitzer 071 Amplifier for Model 71 Countertop Jukebox US $300.00
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 Wurlitzer model 1900 jukebox 1956 Ad- first amplifier US $12.00
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 Rock-Ola Model 408 Rhapsody Amplifier. Nice. Jukebox US $100.00
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 Wurlitzer Amplifier Model 543 .Jukebox US $45.00
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 Wurlitzer Model 550 Amplifier 1960s . Jukebox US $75.00
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 SEEBURG JUKEBOX AMPLIFIER TUBE KIT MODELS G R V & J US $135.00
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 1946 AMI A amplifier model AA # 3102 US $65.00
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Amplifier Model
Picking The Best Audio Amplifier For Your House
Audio amplifiers are available in a flood of different technologies and types. Picking the perfect model for a specific application appears to be a daunting chore. Regardless of your use, I will explain some fundamental amplifiers vocabulary which will be helpful when selecting the right model.
Audio amplifiers are indispensable because your audio source such as your DVD or Blu-Ray player does not deliver a signal powerful enough to drive your speakers. The amplifier will be the connecting element to your speakers. It will convert the weak source signal to a signal strong adequate to drive your speakers.
Depending on your application, you might want to go with a source that already has a built-in amplifier. On the other hand, utilizing a separate amplifier will give you more versatility in picking the model that best complements your speakers. There are some mini amplifier types available. These models are small adequate to hide almost everywhere.
When choosing an amplifier, your initial concern most likely is the amplifier output wattage. You will need a high wattage if you are driving speakers with a low sensitivity (expressed in dB/W), for driving speakers in large rooms or for outdoor speakers. Don't overdrive your speakers however since this may irreparably damage your speakers.
But don’t be overly concerned about wattage. An amp providing 20 to 50 Watts will give you more than plenty of power to sufficiently drive a speaker in any but the largest room.
There are two conventions for specifying amplifier wattage. The first one specifies how much power the amplifier is capable to supply constantly. That figure is frequently named rms or continuous power. The next number is referred to as peak or maximum power and tells how much the amp can supply for short bursts. Most people will take a look at the rms power value whilst selecting an amplifier. On the other hand, music signals are anything but continuous. Consequently picking an amp that has enough peak power handling is just as crucial.
Audio quality is just as important as having sufficient audio power and therefore you should also look at figures such as total harmonic distortion or THD. No amplifier is ideal. There will be some level of signal distortion which is brought on by the amplifier. The amount of distortion is expressed in percent or dB. The level of distortion varies between amplifier types. A smaller distortion means higher audio quality. The level of distortion will be less than 0.05% for a high-quality amplifier. Consumer type amplifiers have higher distortion figures. Typical figures are up to 10% depending on the output power.
An additional specification is called signal-to-noise ratio. This number specifies how much undesired components such as hum and noise the amplifier will add to the audio signal. Higher-end amplifiers will attain a signal-to-noise ratio of at least 100 dB while consumer grade amplifiers will typically have a signal ratio of at least 80 dB.
The bulk of today’s amplifiers are based on a technology referred to as Class-D which offers higher power efficiency than amplifiers based an Class-A or Class-AB technologies. High efficiency means that little power is wasted as heat which can make the amplifier quite small. Class-A and Class-AB amplifiers require a fair amount of heat sinking and thus are typically fairly large and heavy. In contrast, amplifiers based on the Class-D technology are small and lightweight. Some of today's smallest mini amplifiers are no bigger than a deck of cards. However, when selecting a Class-D (digital) amplifier, be sure that the amplifier has low distortion and a high signal-to-noise ratio.
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Frequently Asked Questions...
i need the manual for this amplifier tryed to look omline & didn't find it kenwood(model KAC-923) DETAILS?
I NEED INFO ON THIS AMPLIFIER KENWOOD(MODEL KAC-923) ITS AND OLDER MODEL,I ALSO HAVE A PAIR OF 12'SPEAKERS I NEED INFO ON INTHE BACK OF THE MAGNET IT SAYS ALPINE TYPE-R WITHA 600 WATS AND 4OHM SIGN,BUT IN THE FRONT IT DOESNT LOOK LIKE THE NEW TYPE-R'S ITS SILVER AND THE MIDDLE COVER IS BLACK WITH THE LOGO"ALPINE & IT HAS A "K" INTHE MIDDLE WITH A LIGHTNING BOLT IN THE BOTTOM OF THE "K") SO I ASUME IT MIGHT BE A OLDER MODEL...I WAN TO KNOW IF I COULD FIX THEM MYSELF"THE AMP AND THEE SPEAKERS" SO IF THERS A WEBSITE OR BOOK ANYBODY KNOWS ABOUT PLEASE LET ME KNOW I WANT TO LEARN HOW TO DO THESE THINGS SO I COULD TRY TO HAVE A BUISNESS IN THIS CAREER IN THE FUTURE SO HELP IF YOU CAN DUDES!!!
Answer:
need more info, what so the subs do, are they blown or jsut not responed, if no response, may be a broken wire. a trick use a 9 volt batter to check for connction. if it is blown, throw them out, or contact alpine about service, prolly more cost effective to toss them. the amp: does it power up, if so does it go in to protect immedantly? jsut need to know what is going on thn we can point you to the best solution.
