Amplifier Power
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 ACCUPHASE P 7100 CURRENT TOP OF THE LINE POWER AMPLIFIER  US $9,780.00
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 innersound DPR 500 Power Amplifier US $9,500.00
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 Citation XX XXP Stereo Power Amplifier Preamplifier Set US $8,399.00
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 Pair VAC Renaissance One Forty 140 Monoblock 300B Tube Power Amplifiers Amps US $7,999.95
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 AIR TIGHT ATM 2 power amplifier US $7,490.00
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 GOLDMUND MIMESIS 184 POWER AMPLIFIER US $6,950.00
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 Hovland Sapphire Power Amplifier Made in USA US $6,400.00
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 MARK LEVINSON No 434 MONO PAIR POWER AMPLIFIERS US $6,000.00
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 Mark Levinson Nº 433 Power Amplifier US $5,800.00
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 CLASSE CAM 350 MONOBLOCK POWER AMPLIFIERS US $5,800.00
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 NEW DENON POA A1HDCI 93 CHANNEL POWER AMPLIFIER W NETWORK STREAMING POAA1HDCI US $5,498.00
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 Luxman M 600A Power Amplifier US $5,400.00
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 LUXMAN MQ 88U Stereo Power Tube Amplifier US $5,220.25
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 McINTOSH MC207 7 Channel Power Amplifier 51 71 200 watt US $5,098.00
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 conrad johnson MET150 Multi Channel Power Amplifier US $4,250.00
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 Saxon Audio P700 2 Power Amplifier BLACK US $2,099.95
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 McIntosh MC 7270 Power Amplifier amp 270 watts rms excellent cond box manual US $2,085.00
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 Stereo Power Amplifier US $2,900.00 |
 NHT Controller NHT Power5 Amplifier US $1,900.00
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 Myryad MXA 5150 5 Channel Power Amplifier New A Stock US $1,899.95
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 Arcam FMJ MZ12 12 Channel 65 Watt Power Amplifier US $1,799.00
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 NILES AUDIO SI 1260 12 CHANNEL 60 WATT MULTI ROOM AUDIO SYSTEM POWER AMPLIFIER US $1,798.99
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 MC2 MC750 Audiophile Power Amplifier US $1,699.00
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 Linn Chakra 6100 KS 6 Channel Power Amplifier US $1,698.88
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 McIntsh Stereo Power Amplifier US $1,300.00
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 Peavey Cs4080hz 4080 Watts Max 2 rack space Stereo Power Amplifier US $1,299.99
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 Crest CA 9 200W Power Amplifier CA9 US $1,299.99
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 Rotel RMB 1095 5 Channel Power Amplifier Amp US $1,199.99
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 Marantz MM7055 5 Channel Power Amplifier US $1,199.00
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 Elite40SE SET TUBE POWER AMPLIFIER by IDEAL INNOVATIONS US $1,199.00
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 SANSUI BA F1 power amplifier w handles EXTREMELY nice Very RARE US $999.99
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 Mark Levinson 27 Dual Monural Power Amplifier US $1,599.00
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 Carver TFM 55 Magnetic Field Power Amplifier US $975.00
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 Assembled Tube 6N3 Preamp TDA7294 Power Amplifier 80Wx2 TRANSFORMER HEATSINK US $960.00
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 SpeakerCraft Bass Power 250 Amplifier US $955.00
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 SpeakerCraft Bass Power 250 Subwoofer Amplifier US $955.00
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How Tiny Will They Get? - The New Generation Super-Miniature Audio Amplifiers
New generation super-miniature amplifiers are a result of the same miniaturization that has caused computers and cell phones to shrink. While the features are growing, the size of today's consumer products is becoming smaller and smaller. In the past, tube amps would be commonplace and take up a big part of the living room. Tube amps still have their fair share of fanatics. Nonetheless they have been replaced by solid-state amps for the most part.
Today’s amps integrate traditional pre-amps and power amps and arrange everything neatly in a single box no larger than a VCR. A new generation of super-miniature amplifiers, such as the Amphony Model 100 microFidelity amp, has become feasible due to new developments in audio technology regarding power efficiency. Even though these amps are as small as a deck of cards, they are able to deliver up to 50 Watts power and easily drive a speaker to full volume.
"Class-A" and "Class-AB" amplifier topologies were the two primary amplifier architectures of historical audio amplifiers. These technologies have rather low power efficiency. Analog audio amplifiers will only convert between 20% to 30% of the consumed power into audio while the remaining portion is dissipated as heat. Therefore analog amplifiers require a reasonable amount of cooling. The amount of cooling depends on the amplifier rated output power. These heat sinks prevent the amplifier to be built into a small form factor.
"Class-D" amplifiers are based on a digital design which provides larger power efficiency than "Class-A" or "Class-AB" amplifiers - typically in the order of 80% to 95%. Consequently only a small portion is wasted as heat which was the key in being able to miniaturize audio amplifier designs. One major problem which has slowed the progress of "Class-D" amplifiers is audio distortion which is caused by nonlinearities of the switching output stage.
Newer amplifier technologies have emerged such as "Class-T" and newer "Class-D" architectures. These technologies, such as the one used in Amphony's Model 100 provide for a feedback of the output signal to the amplifier input. By using this feedback, the amplifier can compensate for nonlinearities of the output stage. This permits the distortion to be reduced to levels similar to analog audio amplifiers. At the same time the amplifier offers the high power efficiency of digital amplifiers.
These new generation miniature audio amplifiers open up applications where traditional amplifiers would fail, such as speaker installations where space is premium, including in-ceiling speakers and applications that attach speakers to a cable box or DVD/MP3 player.
would a SONY XM-1652Z Xplod 2-Channel 1000 Watt Amplifier power 2 interfire 400 watt rms 12's good?
The subs will be under powered but is fine IF you set the gain right.
The purpose of the gain is to match the signal volts RMS coming from the source (CD player, etc.) to the input of the amp.
Here is a guide that will help you set the gain correctly http://www.datafilehost.com/download.php?file=6d26c621
You'll need a multi-meter (AC voltmeter), Microsoft Excel and a way to burn an audio CD from an MP3.
If you don't have Excel, use this link http://www.box.net/shared/nkkw1dhk4g
See my site for more info http://spkrbox1.spaces.live.com
Lecture - 21 Power Amplifier
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