Speaker Single
Speaker Single
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 SMT Thru Hole Audio Amplifier Kits w 2 PCBs 1705  US $15.99
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 Engineering Design Kit LM555 Timer 1710 US $11.99
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 VINTAGE JENSEN P8P FULL RANGE SPEAKER WESTERN ELECTRIC 755A TYPE US $153.50
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 LAFAYETTE RADIO SINGLE SPEAKER HE 48 8 OHMS 1 WATT VINTAGE HAM RADIO OR SW US $48.00
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 Energy model 22 8 inch speaker woofer driver single US $30.00
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 Energy model 22 dual hyperdome speaker tweeter driver single US $30.00
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 pair of vintage Kenwood L 09 DC power mono amplifiers US $260.00
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 Focal Audiom 7KR40CH3 JM lab Kevlar rohacell K2 cone midrange high SPL NEW US $225.00
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 2 Klangfilm output Transformer SE PP EL84 Tube Amp 1603 I US $49.00
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 2 Klangfilm output Transformer SE PP Tube Amp 1563 22C US $49.00
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 Brociner Lowther PM3 Klipschorn Klipsch 50s corner horn US $2,600.00
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 TELEDYNE ACOUSTIC RESEARCH SPEAKERS TSW 410 Pair in perfect working condition US $180.00
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 JBL Vintage 4333 Studio Monitors US $1,500.00
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 Vintage GE Stereo Television 1984 Media Center Type US $65.00
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 Fi Cord 101 Tape Recorder 1963 US $21.50
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 VINTAGE ELECTRO VOICE ARISTOCRAT SINGLE SPEAKER US $699.99
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 Vintage Tube Amplifier 6eu7 Amp Head 2 Channel 12ax7 Gain Crisp Clean and LOUD US $30.99
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 SMT LM324 LM386 ICs Kit w SMT PCB 2740 US $11.99
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 Random Decision Guesser Kit 1817 US $6.99
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 JBL L40 Speaker Grill Badge Emblem Etc LOOK Single Good Frame Lansing Grille US $40.00
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 REVERE CAMERA COMPANY T 100 REEL TO REEL TAPE PLAYER RECORDER US $34.99
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 Original working single Bozak B 301A Tempo Midrange B 450 8 ohm NiceShape US $14.99
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 Original working single Bozak B 301A Tempo Woofer B 199A 8 ohm NiceShape US $34.99
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 Sony Excellent condition Works great STR 6055 great sounding AMFM Phono Receiver US $2.25
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 Parasound SR 250 Stereo Receiver US $93.50
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 GRUNDIG SATELLIT 800 MILLENNIUM SHORTWAVE RECEIVER RADIO W MANUALS US $374.95
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 Yamaha NS 75T Crossover US $9.99
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 Sophia Electric 300B output transformers f Western WE 91 tube amplifier RCA 2A3 US $409.99
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 ALTEC 802C Vintage Horn Driver for Altec 811 511 horns Excellent US $150.00
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 BOSTON ACOUSTICS A400 Speaker Original Sales Literature US $9.99
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 RFT 6 woofer Vintaged PARTS E Germany HOME SPEAKER US $.99
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 University S 8 Classic 3 way 15 Speaker from 1955 Near Mint Condition US $550.00
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 Western Electric Altec 755 Speaker Cone WITH EDGE TREAT US $140.00
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 VINTAGE ADVENT A4 LOUDSPEAKER 1 ADVENT LARGE SPEAKER US $10.51
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 Vintage Silvertone Stereo Tube Amplifier 10WPC Sovtek EL84M Mullard 12AX7 US $199.00
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 RCA LC 1A MI 11411 A SPEAKER US $1,000.00
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 RCA LC 1A MI 11411 A SPEAKER EARLY SILVER VERSION US $1,000.00
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 Dynaco Stereo 400 solid state amplifier professionally serviced no problems US $500.00
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 SpeakerArt Proklaim II speakers US $327.00
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 bozak US $800.00
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 Wood Speaker Stands for Monitors JBL L100 4311 AR4 etc US $42.99
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 Vintage Record Player Imperial Party Time Portable Candy Cane 1960s US $24.00
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 1 PIONEER HPM 100 SUPER TWEETER US $30.00
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 Realistic Minimus 11 Black Single Speaker Cat No 40 2036 US $20.00
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 Stereo Tube Amp 30w channel P66 US $1,200.00
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 VINTAGE SANSUI 3000 AM FM STEREO RECEIVER HIFI TUNER AMPLIFIER SOLID STATE NR US $49.99
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 Single GE 12ax7 ecc83 1957 CBS Brand D Getter Preamp Tube 90 test US $19.99
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 Single Mullard 12ax7 ecc83 Preamp Tube 100 test US $44.99
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 Single Amperex 12ax7a ecc83 Preamp Tube 95 100 test US $29.99
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 Single GE 12ax7a ecc83 Blue Halo D Getter Preamp Tube 95 test US $19.99
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 1959 P12R style Alnico Magnavox Secrets OUT on Value and Tone US $19.99
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 1957 Rola Field Coil 12 inch Speaker US $59.99
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 Single Raytheon12ax7a ecc83 O Getter 105 test Preamp Tube US $24.99
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 Single RCA 12ax7 ecc83 Grey plate D Getter Preamp Tube 115 test US $24.99
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 Single RCA 12ax7 ecc83 Black plate D Getter 95 test Preamp Tube US $24.99
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 Pair of Valcom Full Range 8 Speakers Sensitive In Mid Range Voice Response US $26.99
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 1926 Atwater Kent Radio Catalog ORIGINAL Model 20 30 32 35 Speakers More US $24.95
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 60s 2 Track PlayTape 1200 with Carrying Case and 7 Audio Tapes US $11.50
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 Yamaha NS 1000M Midrange Driver JA 0801 Beryllium Dome Working US $12.50
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 Yamaha NS 1000M Woofer Driver JA 3058A Tested Working US $1.04
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 Totem Acoustic Arro Loudspeakers Single Owner Clean With Stands US $649.99
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 Mint Technics SL 23 Turntable Record Player Restored Shure M95ED Cartridge US $1.29
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 klh 911b tweeter one US $9.95
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 MAGNAVOX STEREO TUBE AMPLIFIER EL84 AMPLIFIER by DENNIS HAD TUBE HEADPHONE AMP US $425.00
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 SINGLE VINTAGE MAGNAVOX 12 ALNICO BARREL MUSICAL INSTRUMENT SPEAKER US $19.99
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 TANNOY HOTHOUSE CUSTOM BUILT PRO MONITORING SYSTEM IN KEAL CASES FOR $3800 US $3,800.00
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 RCA REEL TO REEL TAPE RECORDER w Cover US $16.49
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 OUTPUT AUDIO TRANSFORMER Sound RAIS US $68.00
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 Vintage 1970s Imperial Party Time Record Player Light Organ US $77.00
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 BOSE 5 PIECES ACOUSTIMASS 5 SERIES REFLECTING SPEAKER SYSTEM 4 BOSE SPEAKERS US $12.99
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Everything You Need To Know About Piezoelectric Speakers
Speakers, loudspeakers, or speaker systems are output devices through which electrical signals come out as sound. It is in fact an electromechanical transducer, which is very much responsible for the quality of the sound that comes out. Loudspeaker is a general term. It may include a set of speakers, a single device or a set of drivers, or piezoelectric speakers. Loudspeakers are variable instruments and are available in a lot of sizes, shapes and qualities.
The accuracy of a loudspeaker is one of the primary concerns we look for before selecting one. Some of the popular type of loudspeakers and drivers include woofers, sub woofers, horn loudspeakers, piezoelectric speakers, electrostatic loudspeakers, ribbon and planner magnetic loudspeakers, bending wave loudspeakers, flat panel loudspeakers, distributed mode loudspeakers, plasma arc speakers, and digital speakers.
The performance of a loudspeaker is measured on the basis of its ability to reproduce a signal without distorting or warping. When compared to other Audio Equipment, a loudspeaker lacks a lot in this. The frequency response of the amplifiers may vary less than 0.1 dB whereas for loudspeakers it is around +3 dB and -3 dB of ideal linearity.
Piezoelectric speakers are the ones which are frequently used as beepers in watches and other electronic equipment. In less expensive sound systems it is used as tweeters. Examples of such devices are computers and portable radios. However, such uses are quite vast because of its low cost.
Overload cannot bog down a piezoelectric speaker, so they get an advantage over regular loudspeakers. Overload is capable of destroying the voice coil of a usual loudspeaker, but that doesn't happen to the piezoelectric ones. They have an inherently efficient electrical load, so the need for a complex external crossover is less.
One of the main disadvantages is that their frequency response, more often than not, is quite substandard in comparison to other prevalent technologies. The oscillation during the drive of capacitive loads can sometimes lead to distortion or damage of the amplifiers. This answers the question why piezoelectric speakers are generally used in single frequency or non-critical applications.
There are special circumstances where the piezoelectric speakers are used both as input and output devices. Sonar application is one such example. There the use is to generate underwater sound. This is the output version and for input the use is to act as a sensing part of underwater microphones. They are quite advantageous in this regard. Actually, their usefulness is much higher than that of the ribbon based instruments.
Ceramic is nowadays used as the material for piezoelectric speakers. The compact size in fact helps further miniaturization for PDAs, digital cameras, 3G mobile phones, and other such appliances. All standard dynamic speakers use the magnet to function, whereas the compact size would lessen the thickness as well as the weight. The weigh loss can be up to 30 to 50 per cent. The power utilization will also be low, around half of the original. This will be less costly in the long run.
About the Author
Victor Epand is an expert consultant for music gear, speakers, and microphones. You can find the best marketplace for music gear, speakers, and microphones at these 3 sites: music gear, piezoelectric speakers, and microphone.