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Kit Speakers

Selah Audio SA-1 compact loudspeaker review
Troels Gravesen, Denmark
Silicone Chip
Stones Sound Studio
 
Retail Sydney Australia
Wholesale Sydney Australia

FOUNTEK NeoPro5i RIBBON TWEETERS
SOLD IN MATCHED PAIRS

115x190mmm OVER-SIZED HIGH-POWER PROFESSIONAL RIBBON TWEETER PAIR
The NeoPro5i ribbon tweeter is a premium grade, high-performance component best suited to large high power professional installation solutions.
This incredibly efficient transducer is capable of very high SPL yet faithfully maintain a sound quality that surpasses any other kind of high frequency transducer. The large diaphragm also enables a lower resonant frequency of only 400Hz enabling better crossover characteristics and an impressively broad frequency range that will match to many types of speaker arrays, easily and efficiently, with audiophile sound quality.
Super strong Neodymium magnet for high efficiency. Built-in impedance conversion transformer. Effective from 850Hz upwards due to the large diaphragm area and low self-resonance. Super thin Enforced-Sandwich Ribbon diaphragm guarantees a high degree of signal fidelity and broad frequency response. Low distortion factor, 60W Nominal power-handling capabilities, linear impedance with linear amplitude and broad frequency response.
Very high flux, NOT shielded, so NOT suitable for near TV applications.
Manufacturers Recommended Crossover Frequency is 1.5KHz 2nd-order or above

Stones Sound Studio:
Independent assessment, comments:
The Neo Pro 5i is an excellent high sensitivity pure ribbon tweeter for high end home theatre and music speaker system applications. The Neo Pro 5i Ribbon tweeter applications include Low to medium power High End class A Transistor / FET or Valve amplifiers using high efficiency Woofer / Tweeter speaker combinations. Thus enabling Triode/Pentode valve amplifiers with only a few watts of output power to reach incredible sound pressure levels with very low harmonic distortion. Due to the high power handling capabilities of the new Alloy sandwich diaphragm the Neo Pro 5i Ribbon tweeter can also be used for High End Studio or High power PA monitor speaker systems requiring the extra detail and distortion free sound and transient dynamics of a ribbon tweeter. The Neo Pro 5i is a true pure ribbon tweeter with incredible dynamics ,sound stage ,depth of field, midrange detail, and shimmering top end to kill for.
Russell Storey. Stones Sound Studio

Manufacturers Comments:
NeoPro5i is a high power ribbon tweeter designed for High power Home Audio and Professional Audio. The ribbon diaphragm is made up from an advanced composite material, total thickness only 20 micrometers, normal operation temperature is 240 degree Celsius. This material provides extra strength and guard Aluminum layer do not oxidation. The diaphragm suspension make up from high temperature soft rubber material. It makes diaphragm keep optimum tension, and damping resonance from the ribbon. The magnetic strength determines efficiency in a ribbon transducer. NeoPro5i assembled 4 pieces highest quality Neodymium magnet in a heavy U-York. The surface magnetic strength is 1 Telsa. Typical ribbon diaphragm self-impedance is very low, so a practical ribbon tweeter must assemble an impedance matching transformer. The impedance matching transformer is very important to products consistency. All impedance matching transformers are hand built and 100% measured by high-precision instrument. Close quality control make sure product’s precision.
Datasheet

Super strong Neodymium magnet fro high efficiency
Build-in impedance conversion transformer
Effective from 850Hz upwards due to the large diaphragm area and low self-resonance.
Thin enforced sandwich ribbon diaphragm guarantees a high degree of signal fidelity and broad frequency response.
Low distortion factor, good power-handling capabilities, high linear impedance and amplitude frequency response and the broad frequency response range.
Flat impedance from 1,000 to 40,000Hz
 
Specifications
Ribbon materialEnforced sandwich
Ribbon mass88mg
Ribbon dimension15mmX145mmX0.02mm
Ribbon area2175square millimetres
Gap flux1 Tesla
Gap height5mm
Impedance7Ohm
DCR0.02 ohm
Sensitivity102dB/2.83V@1M
Frequency response850Hz ~ 40,000Hz
Resonance frequency 400Hz
Power handling60W Normal, 120W Max
Recommended crossover frequency (minimum)1.5KHz / 2nd-Order [min]


Cut Out
Face190x115mm
Hole170x85mm
SPL
Impulse
Waterfall
White Sheet

Stone Sound Studio
[Independent Testing]
SPL

JPG
WMF

Impedance

JPG
WMF

Impulse
Phase
Step
White Sheet
Compilation of Above

Suggested Crossover
NeoPro5i 2-Way 3rd Order Crossover Circuit 1.8KHz.
Attenuator output set at 95dB.
For use as a suggestion Only
NeoPro5i Tested with above.
New Update Version 2

Design details

Technology

More about Ribbon Tweeter Technology


WES
Marketing Document

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