DIY Speaker, Ribbon Transducer, Ribbon Driver, Planar Driver, Ribbon Speaker

Description

On offer are the Premium Loudspeakers PFT-150-50-3-AA transducers. Comes with PDF data sheet.
Spec sheet can be seen here:
https://shop.speakerenco.nl/content/images/PDF/PFT150-50-3-AA.pdf
Manufacturer describes these as 'full range' speakers but we think they work best as tweeters when used with an appropriate crossover and woofer.
These flat panel drivers are celebrated for their clarity and silky performance, particularly for female vocals. Originally promoted as full range drivers, they have been used successfully as tweeters.
Similar drivers have been used by a major manufacturer as computer speakers using a subwoofer crossing over to the flat panels at around 400 Hz, 6dB/octave.
Data sheet recommends pairing with crossover 300Hz 12dB / oct HPF.
Acquired from a boutique speaker company that recently went out of business, these drivers are new and individually wrapped in the original shipping envelopes.
They have sold for approximately in the US and E89 in Europe.
Nominal power handling: 40Wrms
Maximum thermal Limit: 45Wrms
Active radiating area: 125 square CM
Frequency response: 255 Hz - 20kHz
Resonant frequency: 255Hz
Nominal impedance: 2.8 Ohms +/-0.2 Ohm.
A note on shipping: These fit a USPS Small Flat Rate shipping box which can hold up to 4 of these. If you buy 4 you'll only get charged for a single shipment. If you want more of them we will need to adjust the shipping.