DRIVE UNITS BY MANUFACTURER:
BC25SC06-04
This high efficiency tweeter features a 4 ohm 25 mm voice coil, high energy Neodymium magnet assembly, a damped textile dome and ferrofluid in the magnetic gap for enhanced cooling of the voice coil. The BC25SC06-04 has a compact horn loaded faceplate (70mm diameter) with recessed mounting holes, and comes complete with a foam sealing gasket to reduce vibration. A finned heatsink aids cooling.
A full datasheet can be downloaded from the bottom of this page.
Resonant frequency (fs) | 1394 Hz | Nominal impedance (Zn) | 4 Ω |
Effective diaphragm diameter | 25 mm | DC resistance (Re) | 2.76Ω |
Ferrofluid ? Y/N | Yes | RMS power handling | 25 W |
Recommended crossover | 3 kHz 12dB | Faceplate diameter | 70mm |
Sensitivity (2.83V/1m) | 92.4 dB | Cutout hole diameter | 46mm |
Peerless by Tymphany
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)!