Sonab OA-12 upgrade

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JoelRiehl
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Sonab OA-12 upgrade

Post by JoelRiehl » Sat 24 Jul 2021, 06:48

I am about to undertake another OA-12 upgrade project; this time using the Satori mid-woofer, Obi T22 tweeters, and filter by grafpro. Parts are ordered.

I was visiting #2 son in Montana a couple weeks ago. He has the pair I upgraded 6 years ago, with Carlsson B65 drivers. Paired with the old Pioneer SX-750 receiver I gave him (which I had since new in 1976), it remains one of the sweetest sounding combinations I have ever heard - so I am excited to hear what the Satori upgrade will do! It took me a long time to get around to it.

JoelRiehl
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Re: Sonab OA-12 upgrade

Post by JoelRiehl » Sun 22 Aug 2021, 08:31

Parts have arrived, and ready to go. I have a question right off:
1. The Satori driver has 6 screw holes around a thick cast rim instead of the turned up steel rim of the original drivers, which accepts 4 retainer clips. How do you mount the Satori drivers? Do you clamp the rim with the 4 original retainer clips, or do you drill and screw using the 6 screw holes in the Satori driver?

Appreciate any guidance. I'm sure I will have more questions as I go along.

JoelRiehl
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Re: Sonab OA-12 upgrade

Post by JoelRiehl » Sun 22 Aug 2021, 08:32

Parts have arrived, and ready to go. I have a question right off:
1. The Satori driver has 6 screw holes around a thick cast rim instead of the turned up steel rim of the original drivers, which accepts 4 retainer clips. How do you mount the Satori drivers? Do you clamp the rim with the 4 original retainer clips, or do you drill and screw using the 6 screw holes in the Satori driver?

Appreciate any guidance. If anybody has photos that'd be great too. I'm sure I will have more questions as I go along.

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STDI!
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Re: Sonab OA-12 upgrade

Post by STDI! » Sun 22 Aug 2021, 09:06

I have used the original retainer clips but without the rubber pieces. This way there are no extra holes drilled.
20210720_120446_1626782763523_resized.jpg
OD-11(T22+B65OAII), 3xOA12(T22+B65OAII), 4xOA14, OA14 (T22+Satori), 2xOA50, OA52.N, 2xL8, SC6, SC6.2

JoelRiehl
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Posts: 64
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Location: Seattle
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Re: Sonab OA-12 upgrade

Post by JoelRiehl » Sun 22 Aug 2021, 16:46

STDI! Thank you! That's how I was hoping it would work. Wasn't looking forward to drilling a bunch of holes in my immaculate old speakers.

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