DIY Oris horns
Extraordinary sensitivity (up to 114dB!), life-like dynamics, pinpoint imaging, great detail, great bass and very natural tonal attributes - all Oris DIY loudspeakers share these qualities, taking you closer to music than you’ve imagined possible.

This is still a great hobby for me and I really enjoy dealing with all my DIY customers who, even though we now offer a wide range of fully assembled products, remain fundamental to BD-Design.

BD-Design’s origins are in designing and supplying DIY loudspeaker components. Our customers appreciate the performance our systems provide, and build their own speakers for fun or to save money. As they discover, the combination of Oris front horns, suitable full range drive units and a compatible woofer system is a fantastic recipe for musical satisfaction.

Our customers’ experience shows that, with basic skills and tools, you can realistically build and finish one of our ORIS DIY loudspeaker systems. Any part of the process you can’t or don’t wish to undertake can easily be done with the help of others.

We supply horns, a wide range of drivers, upgrade kits and phase plugs (if required) to which builders add a woofer system to complete an Oris DIY system. Detailed designs and construction plans for our range of recommended bass enclosures and filters are available here.

Parts are supplied to varying levels of finish, as follows: 1) unfinished parts; 2) partly assembled units; 3) completely assembled units; and 4) painted parts/units.

System options:

All Oris DIY loudspeaker systems are related, giving you flexibility in assembling a system that suits your taste and circumstances (listening room, system, budget etc).

At its most basic, an Oris system requires a pair of either the 150, 200 or most recent developed 250 horns, a suitable pair of drive units for the horns, potentially a pair of our phase plugs, and a bass system. The horns must be painted, as this has a significant effect on their performance.

For the full range drivers we highly recommend Lowther or AER drivers. However, users claim to have very good results using Fostex FE206E drivers.

Our most recent Oris 250 horns offer a new range of options:

The Oris 250/8 is the horn which is slightly smaller in diameter (54cm) than the Oris 200 and has the least depth of all Oris horns available. This reduced depth give more freedom to the sound without any colouration. This horn is for use with 8" drive units.

The Oris 250/6 is in priciple the same horn but then with a smaller throat. This horn works very well with the Fostex FE166E or the smaller Lowther 45/55 series drive units.

The Oris 250/2 is designed for using 2" compression drive units. This is the same horn as used for our Orphean MkII system.

Drivers and amplifiers:

You will also require two amplifiers – one for driving the main horns, and the other for driving the bass system. With this you will also require either a passive (recommended) or active crossover.

All ORIS systems built following our suggestions will give excellent micro and macro dynamics, transparency, stable and accurate imaging, detail, and deep and dynamic bass down to 30Hz.

If you need more information feel free to contact Bert Doppenberg or use our Forum for support.

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