DRIVE UNITS BY MANUFACTURER:
We are the authorised UK distributor for Hiquphon and are very proud to work with Oskar Wrønding and bring Hiquphon directly to the DIY loudspeaker market in the UK.
Technical helpline: 01702 523999 or contact us

Hiquphon founder Oskar started his professional audio career in 1973 when he joined popular manufacturer Scanspeak taking up the role of production quality engineer. Scanspeak was a very busy company at the time as the early hifi boom years of the 1970's were well underway and demand for class leading drive units and new technology was high. Oskar became involved with production planning / quality control between 1973-76 and his relentless pursuit of absolute excellence culminated in him taking the lead role 'head of product design' and technical manager in 1977. As technical manager Oskar became the backbone of Scanspeak, successfully steering the company through the tough post-boom years whilst being heavily involved with developing drive unit innovations & technologies, many of which that we take for granted to this day.
The hifi industry is not immune to economic downturns and the early 1980's were extremely challenging times for many manufacturers. The then owners of Scanspeak were looking to save money by using products and services from the far east which at the time would inevitably compromise quality and affect jobs in Denmark. During these turbulent, restrictive times Oskar decided to launch his own company where he had total control over every aspect of design and production thus ensuring his products were of the highest caliber.
Hiquphon was founded / owned solely by Oskar in 1983 & continues to be so to this day.
Excellent sound is borne out of excellent design & engineering.
Oskars soft dome tweeters soon gained the enviable reputation of being the finest 20mm soft domes and were selected by Linn Products - a co-operation that lasted over 25 years and covers the majority of the classic Linn loudspeaker models.
Hiquphon exclusively produced 2 models for Linn: D20-LP-1 (1983 → ) & D20-LP-2 (1988 →).
Hiquphon tweeters are designed and analysed down to the very last minute detail with no expense spared or compromise accepted; the end result of which is a range of sweet sounding tweeters with exceptional musicality and incredibly low distortion. Each pair is thoroughly tested and pushed well beyond their response range in order to highlight any potential issues, then matched to within an incredible 0.5 dB and signed off personally by Oskar.
Oskars tweeters feature many unique innovations including heavy duty solder bucket connections; to get the best from these we have prepared a photo guide, click on the following text: Hiquphon connection photoguide.
The OW1-92 / OWII-92 can be used to directly replace the stalwart Scanspeak D2008-8511/12 and represent a significant upgrade for owners of Naim, ProAc, Rega & Spendor loudspeakers using these models.
| KAN MK1 to serial no. 24077: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
| SARA to serial no. 14730: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
| ISOBARIK to serial no. 10924: Scanspeak D2008/8511 >> | upgrade to | Hiquphon OWI-92 |
The Hiquphon OWI-92directly replaces and upgrades Linn D20-LP-1 & works well in the following models:
KAN, SARA, ISOBARIK, KELTIK, INDEX, NINKA, KEILIDH, KABER, ESPEK, AV5120, AV5140 & NEXUS**
** NEXUS used different tweeters across the production run - please contact us.
The Hiquphon OWII-92directly replaces and upgrades LinnD20-LP-2 (the close matching of OWl-92 and OWll-92 also renders these an upgrade).
All Linn product trademarks and names acknowledged & used for identification purposes only.
Hiquphon Logo © Oskar Wrønding
5.0 / 5.0
19 Reviews
5.0 / 5.0
6 Reviews
Friendly technical support
40+ years in the trade
UK family run business
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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 ❣️
