hi songsc
nice to see u here.
agree with u , for example,
we can find a specail speaker here:
http://www.tannoy-speakers.com/s.php?product=149&title=ST100&s=30
ST100
Introduction
A SuperTweeter™ is a small high frequency drive unit, mounted in a special casing, designed to sit on top of, and drawing its input signal from, existing speakers. Tannoy SuperTweeter™ will transform any sound system, creating the effect of a quantum leap upgrade in the sound quality of speakers, electronic components and cables.
All models are stand-alone units with vertical axis adjustment to ensure optimum combined acoustic output with the main speaker. Each has two sets of controls allowing both operating frequency and output level to be optimised for any type of speaker.
ST100 SuperTweeter™ come in solid black ash and with the same Performance Platform™as the ST200. This model is provided with specific crossover and frequency control settings suited to all types of speakers, regardless of manufacturer. In addition the ST100 is optimised for use with older Tannoy Dual Concentric™ models, many going back over 40 years to the original 15” Monitor Red derivatives.
Features
A high stiffness titanium dome minimises the effects of dome break-up and extend frequency response, while a copper clad aluminium voice coil on aluminium former ensures high power handling. A neodymium magnet system also extends frequency response by minimising eddy current losses in voice coil and a driver magnet system earthing avoids interference and information masking caused by radio interference.
Gold plated terminals, adjustment screws and circuit board are used for high signal transparency. Radio Frequency quality inductors in crossover for excellent high frequency characteristics and non-inductive planar thick film resistors on ceramic substrates, avoid losses associated with wire wound types. High quality polycarbonate film capacitors have been selected for high frequency use.
The ST100 is constructed from solid black ash finished hardwood. The unique Tannoy Performance Platform™, gives stable support and accurate variable adjustment. Not only are they designed to visually blend in with all types of speakers, but they also provide an instant acoustic upgrade that is unavailable in any other way.
Specifications
ST100
PERFORMANCE
Recommended amplifier power Up to 250 Watts
Continuous output power 135 Watts RMS
Peak output power 550 Watts Peak
Sensitivity 95dB (2.83v @ 1m)
Nominal impedance 8 Ohms
Frequency response To 54kHz, usable output (-18dB) to 100kHz
DRIVE UNITS
Driver type 25mm (1.00") diameter 25 micron titanium dome, gold finish, with neodymium magnet system
CROSSOVER
Frequency 18, 20, or 22kHz adjustable
Type 3rd order compensated high pass
Level 87dB, 89dB, 91dB, 93.5dB, 95dB
CONSTRUCTION
Dimensions 150mm (6.00") diameter
perhaps we can find more info of our body at the feature.
rg
fumac
nice to see u here.
agree with u , for example,
we can find a specail speaker here:
http://www.tannoy-speakers.com/s.php?product=149&title=ST100&s=30
ST100
Introduction
A SuperTweeter™ is a small high frequency drive unit, mounted in a special casing, designed to sit on top of, and drawing its input signal from, existing speakers. Tannoy SuperTweeter™ will transform any sound system, creating the effect of a quantum leap upgrade in the sound quality of speakers, electronic components and cables.
All models are stand-alone units with vertical axis adjustment to ensure optimum combined acoustic output with the main speaker. Each has two sets of controls allowing both operating frequency and output level to be optimised for any type of speaker.
ST100 SuperTweeter™ come in solid black ash and with the same Performance Platform™as the ST200. This model is provided with specific crossover and frequency control settings suited to all types of speakers, regardless of manufacturer. In addition the ST100 is optimised for use with older Tannoy Dual Concentric™ models, many going back over 40 years to the original 15” Monitor Red derivatives.
Features
A high stiffness titanium dome minimises the effects of dome break-up and extend frequency response, while a copper clad aluminium voice coil on aluminium former ensures high power handling. A neodymium magnet system also extends frequency response by minimising eddy current losses in voice coil and a driver magnet system earthing avoids interference and information masking caused by radio interference.
Gold plated terminals, adjustment screws and circuit board are used for high signal transparency. Radio Frequency quality inductors in crossover for excellent high frequency characteristics and non-inductive planar thick film resistors on ceramic substrates, avoid losses associated with wire wound types. High quality polycarbonate film capacitors have been selected for high frequency use.
The ST100 is constructed from solid black ash finished hardwood. The unique Tannoy Performance Platform™, gives stable support and accurate variable adjustment. Not only are they designed to visually blend in with all types of speakers, but they also provide an instant acoustic upgrade that is unavailable in any other way.
Specifications
ST100
PERFORMANCE
Recommended amplifier power Up to 250 Watts
Continuous output power 135 Watts RMS
Peak output power 550 Watts Peak
Sensitivity 95dB (2.83v @ 1m)
Nominal impedance 8 Ohms
Frequency response To 54kHz, usable output (-18dB) to 100kHz
DRIVE UNITS
Driver type 25mm (1.00") diameter 25 micron titanium dome, gold finish, with neodymium magnet system
CROSSOVER
Frequency 18, 20, or 22kHz adjustable
Type 3rd order compensated high pass
Level 87dB, 89dB, 91dB, 93.5dB, 95dB
CONSTRUCTION
Dimensions 150mm (6.00") diameter
perhaps we can find more info of our body at the feature.
rg
fumac