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SB26STCN-C000-4

UK STOCK ITEM
The SB26STCN-C000-4 is a 26mm soft dome tweeter from SB Acoustics featuring a low distortion shielded neodymium magnet system in a very compact body. The on-axis response is excellent to beyond audibility. Fantastic value.
| Resonant frequency (fs) | 960 Hz | Nominal impedance (Zn) | 4 Ω |
| Effective diaphragm diameter | 26mm | DC resistance (Re) | 3.2 Ω |
| Ferrofluid ? Y/N | Yes |
Max power handling | 120 W |
| Recommended crossover | 2.6kHz/12dB | Faceplate diameter |
72mm |
| Sensitivity (2.83V/1m) | 92.5dB | Cutout hole diameter | 50mm |
Order and delivery was a very pleasant process, I loved the hand written 'thank you' for my order on the delivery/packing note from Will and Caroline😎
Ordered this tweeter as replacement for Monitor Audio Silver RS6 TRS-025. Only slight resizing of the cabinate hole required, the original fixing holes required no adjustment, fitment took aprox 10 minutes per box.
No crossover adjustment made, some say a 1ohm resister in series might be required...personal choice.
The sound, wow, compared to the Monitor Audio TRS-025 which by comparison sounded like music was eminating through a cardboard muffle, i now have open and clear top end. Tremendous improvement. Vocals are placed accuratly, general sound stage makes for a new exciting listening pleasure.
Crossover improvements will follow, upgrading to quality components, but as a first stage, this change is phenominal.
The Monitor Audio Silver RS6's are very happy being driven by my old Quad 34/306. Thanks Will and Caroline, i will be back.
Thankyou for your review Rob !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
In addition to my post from 17/11/2025, here is some information on the final status of the project: Saving the Mission 752 loudspeakers.
Once it was certain that it would be possible to revise the loudspeakers (thanks to Willy), the desire to also replace the low-midrange drivers and convert the crossover to a high-quality version quickly arose. I was fortunate enough to be able to purchase two Burmester 949 MKII midrange drivers from Audax to replace the existing low-midrange drivers (52LFHDA – still available and can be sold). They are practically identical in design, but significantly more refined and powerful. Revising the crossover proved somewhat more difficult because the values of the coils were not printed on them. However, they can be determined by measuring the originals. Mundorf resistors, coils and capacitors of the two highest quality grades were installed. These are not exactly cheap, but once the speaker is finished, the difference is clearly audible. The crossover was also modified slightly. A shunt was integrated into the high-frequency branch. Following a tip in a forum, the crossovers were also moved to the outside. They are currently still on the speaker without a housing. The metal housing provides perfect shielding. As the Willys tweeters are very efficient, they were ‘damped’ slightly. The final cost of the conversion was approximately £600. In return, the speakers now perform at a level that far exceeds their original condition. An exciting project that was only made possible by Willys – thanks to Caroline & Will ❣️
Id had these speakers for a couple of years. I got the S/H and already the tweeters weren't working when purchased. Played them for and while but parked them up hoping one day to organise tweeters. Well that day finally came and i am blown away. Easily better than my Jamo 507A's and TDL RTL 3's. I drive them with an adcom 5300 and nad as pre amp. I am in New Zealand. The turn around time was within 2 weeks. Saving up for the crossover upgrade.
This made a massive difference to my 30 year old Linn Keilidh speakers, giving them a new lease of life.
Willy's is an awesome serivce. I needed a 4" midrange replacement that is a drop in exact fit for the IMF TLS50. If you are ordering from the USA, the Monacor MSH-115, 4" is your best option. I live in Pennsylvania and it only took 5 days from the time I ordered to be delivered from the UK. Royal Mail provides tracking. I dropped in cab and was fired up shortly on the same day. Sounds great. Totally worth buying these instead of rebuilding old speakers.
Willys saved my Mission 752 speakers. The tweeters were defective. The original tweeters are no longer available, and it would have been a shame to throw away these really good speakers. I came across Willys by chance in a chat room. Even there, the company and especially the tweeters were highly praised. I contacted Willys and received a very friendly response. Ordering the speakers went smoothly. However, shipping to and from the UK is a real adventure due to ****. It is expensive, cumbersome and no fun for either side. The tweeters arrived two weeks later and were of course installed immediately. The result is truly impressive. Airy, clear highs (previously a weakness of the 752, which tended to ‘hiss’) and a sound image that really thrills me. The ‘old’ Mission 752s seem to me as if they have been swimming in a fountain of youth. Thank you for the good service and the high-quality tweeters. ❣️❣️❣️
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