DRIVE UNITS BY MANUFACTURER:
Fountek NeoX1.0-B
Categories: Fountek Drive Units - All Ribbon Tweeters
UK STOCK ITEM !
The Fountek NeoX1.0 features Fountek's third generation ribbon tweeter technology. This design incorporates a larger surface area ribbon mounted in an aperiodic shallow horn resulting in an improved low end response / wider useable range with higher power handling than its predecessors. The 12x45mm ribbon is made from an ultra light (20mg) multilayer aluminium sandwich with a cross section of 0.015mm (approx 0.6 thou). Efficiency is reasonably high at 92dB.
The end tensioning clamps form a substantial heatsink for the low impedance ribbon and an impedance matching transformer is built into the back of the housing .
We recommend a minimum crossover frequency of 2.5kHz / 18db octave.
Frequency range | 1200Hz-40kHz | Nominal impedance (Zn) | 8 Ω |
Ribbon dimensions | 12x45mm | DC resistance (Ribbon) | 0.02 Ω |
Effective area (squared) | 540mm | RMS power handling | 20 W |
Crossover frequency | 2.5kHz/18db | Peak power | 38W |
Sensitivity (2.83V/1m) | 92dB | Faceplate (rectangular) | 98x69.5mm |
This is a nice tweeter! Bright, but not cold sounding - a real sparkle at the top-end which I always appreciate. Note that Willy's spec says that you should use a 3rd order (-18dB)
crossover, whereas Fountek actually specify 2nd order (-12dB) on their website - It doesn't really matter which you use, but I used 2nd order at 3.5k with no issues. Very wide dispersion characteristics make it an enjoyable listen, even well off axis. No idea about reliability yet, but I've been using it for a few months now with no issues - and sounding just as sweet as ever.
Thankyou for your review !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Been looking for a supplier of replacement drivers for some years.
Willy's HiFi had just the parts at a good price and they arrived in a couple of days.
Excellent service. Even a personal thank you hand written on the invoice.
A quick delivery and the tweeters are perfect on my mission 753 freedom speakers. Easy to fit . Highly recommend.
I’m no expert when it comes to speakers, but after some research (and a strong recommendation from ChatGPT), I went with the SB Acoustics SB65WBAC25-4 as a reference full-range speaker in this size range.
Having now tested them, I can confidently say they’re probably the best speakers I’ve ever owned. The clarity is outstanding—every detail comes through with incredible precision. The bass is surprisingly full and punchy for a speaker this size, and they handle power impressively well. For anyone looking for a high-performance compact full-range driver, these are hard to beat.
Item as described and arrived quickly - and did the job. However, I suggested that anyone replacing speaker foam makes sure they have a very large pair of sharp dressmaking scissors as it was not easy cutting to size without producing a ragged edge (which I managed to hide short of a close inspection)!