DRIVE UNITS BY MANUFACTURER:
OW1-92
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Hiquphon Tweeters
IN UK STOCK NOW.
Close matched pairs ± 0.5dB.
Excellent upgrade for Linn D20-LP-1 and Scanspeak D2008/8512 series.
This tweeter works very well in these passive Linn models:
KAN, SARA, ISOBARIK , KELTIK, KATAN, NEXUS, NINKA, TUKAN, INDEX, KEILIDH, KABER, ESPEK, AV5120 & AV5140.
Upgrades the Scanspeak D2008/8512 as found in models such as Rega Ela, Proac Tablette EBT, Studio EBS, Spendor SP2 and many others.
If you have any questions about compatibility please contact us.
The OW1-92 is a 20mm (3/4") soft dome tweeter offering a superb flat frequency response with great analytic and revealing capabilities.
Beautifully neutral, relaxing and non-fatiguing sound.. this is a very musical dome tweeter. Displaying an extremely broad banded response, the OW1 has been used in a great number of high-end 2-way loudspeaker designs. The OW1 is also a perfect choice for 3-way (or more) custom built designs of the highest quality. Although primarily designed for top end domestic loudspeakers, the OW1 has gained the reputation of being a benchmark product for studio monitors and bespoke car audio.This beautiful, fastidiously produced unit displays a very neutral and low distortion response curve with superb frequency linearity - VERY flat from 2 – 20 kHz +/- 1 dB (+/- 0.5 dB typical) - an exceptional result.
Phase linearity is also excellent and the rolloff towards the upper design limit is very smooth. Multiple rear chambers yield a low and well damped resonant frequency of just 850 Hz. The frequency response climbs softly to 2 kHz then is linear to 20 kHz.Very broad-banded (1.0 kHz to 25 kHz nominal –3 dB or better).
Unique heavy duty 2.5mm solder bucket connectors - a soldering guide can be found here: Hiquphon connection guide
Supplied as matched pairs to within an incredible 0.5 dB (individual graphs included), each pair is thoroughly tested before being signed off by Oskar Wrønding, the founder of Hiquphon.
Full set of datasheets can be downloaded from the bottom of this page.
Sole Authorised UK distributor.
| Resonant frequency (fs) | 850 Hz | Nominal impedance (Zn) | 8 Ω |
| Effective diaphragm diameter | 20mm | DC resistance (Re) | 5.8 Ω |
| Ferrofluid ? Y/N | No | RMS power handling | 100 W |
| Recommended crossover min. | 2kHz/18dB | Faceplate diameter | 92 mm |
| Sensitivity (2.83V/1m) | 87 dB | Cutout hole diameter | 70 mm |
Phone helpline: 01702 523999 or contact us
Have installed these tweeters in Keltik speakers driven by Klimax DSM Katalyst ExaKtbox both with utopik power supplies and six Dynamik 500 solo's. Immediate improvement over linn alternatives.
Chose the OM-1 version as the room is acoustically " bright ". Currently using standard linn Keltik software for 15/3 tweeters. Tune dem positioning of speakers no space optimisation applied
Really appreciate the level of service received and the advice given by Willys hi fi.
Have another pair of these tweeters in Ketiks built up from bare cabinets but with old Kef b139 sp1044
constructors drive units units obtained from eBay ..Naim front end . Linn active tune box, Linn lk280"s
all transformer powered. - also sounds good
Thanks for the review Keith ! The Hiquphon tweeters really start to sing after approx. 100 hrs use.
Will & Caroline
What a business, such a personal service , superb communication , and speed of delivery.
Bought a matched pair of Hiquphon OW1-92 Tweeters for my ancient Linn Kan’s Mk11.
WOW back to life , if not better , the main difference I hear , is more life, output, depth from the tweeter without taking away what I love about the Kans.
Will order a second set very soon for my other pair.
Thanks Will , and Happy Birthday.
Anthony
Loved the extra touch , gaskets, solder and screws.
Thanks for the review Anthony !
Will & Caroline
I originally bought a pair of OW2 in error.
I did however find them very articulate and detailed but could be a bit shrill on occasions so I ordered the OW1 as a replacement. They are smoother but I now wonder if I miss the detail of the OW2s.
Only time will tell. As ever very fast efficient service from Willys
Thanks for the review Kevin !
Will & Caroline
Had one of the original 038/2 tweeters go on me, so decided to get some of these, as a number of people on chat forums say that they are a good replacement (even though the Linn dealer told me not to).
They are in my opinion, quite a significant upgrade from the 038/2. Brighter (which I like), but also more detail and a bigger soundstage. Easy to install (with the solder buckets), but could do with having a thicker gasket as the front plate is thinner (I guess I'll have to make some one rainy day).
I run my Ninkas Aktiv, but I suspect that you will get an even bigger difference if running passive. Highly recommend these. Probably the best value upgrade I've ever had.
Thanks for the review Bob !
Will & Caroline
I bought these to upgrade Keilidh tweeters, was hoping it wasn't a waste as they're, er, not cheap. I've waited a couple of weeks before posting this review, to properly listen. Well... I can't believe the difference, it's all so much more clearer, the previous harsh, tiring tone all gone. What a joy. And did I mention the clarity? Wow!
Thanks for the review Tim !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
The crossover was constructed well, I just need to figure out the best way to attach it to my Kef Concertos as they are bigger than the ones supplied by Kef that are mounted on the front of the baffle board.
Very nice deep bass look amazing with my custom made speaker
Great speedy delivery and very easy to fit. The plastic in my drivers had perished and they had suffered one too many parties! No need to make any adjustments (someone above did suggest that). I just screwed them in and the foam compressed into place. Before and after below (before I changed speaker number 2). Thank you!
Thanks you very much for the kit. I found back my kelidh after nearly 27 years. The filter were really dead and one tweeter damaged. Very happy to decide to repair/ upgrade rather than change. I found back tone and stereo stage like in the old days probably even better.
I didn't know soldering material was so important thanks for providing some.
Quite easy to recap filter and change tweeters.
Also wanted to thank you for this little note hand writen in French just for me. Very nice attention to see.
Next step is the next question do I change first the drivers with the monacor as I ve lost dust caps but they still work properly or do I change my old arcam alpha 8. Is there really something to gain moving to an newer arcam sa10 or Radia a5? Are newer amplifier much better than the old days one?
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 ❣️
