cooky1257
pfm Member
As a few of you will no doubt already be aware I'm a long time fan of large studio monitor style presentation, having way too many pairs of large Tannoy DC's and/or JBL's in the house at one time or another.
A few months ago I satisfied a long standing itch to get some ATC SCM100ASL monitors, I was very familiar with their sound having regularly come across them in post production/dubbing suites/recording studios via the day job a few moons ago now.
A nice pair of domestic 'classic' versions in piano black(car black?) that had been fairly recently serviced(2016) with new SL bass drivers, mid super domes and new SEAS tweeters came up and I couldn't resist.
The only thing that bugged me was the mids-they hadn't updated the waveguides when they were re-domed to Super dome spec.
I've no intention of going to the expense and (now) big shipping palava of a tweeter upgrade as I'm more than happy with how they currently sound but I enquired at ATC if the curved mid waveguide were available as spares and if a swap was doable diy.
Peter Guppy was very helpful, he pointed out the dangers and pitfalls, in particular the consequences of a cock up would mean completely new drivers(£1250 each!!) as ATC no longer re-dome motor units made before 2006 owing to plating corrosion in some of the older drivers.
With some trepidation I ordered the parts and they arrived within a few days rather than the 10 weeks I was initially warned about.
These suckers weigh 65kg each and are firmly attached to their stands, laying them flat was a 2 person move.
Peter explained that I would need to remove the bass drivers as the mids are removed through the bass driver hole. I removed one of the tweeters to try and get a better view of the inside.
The new waveguide can be seen in the first pic.
Unfortunately the netting to hold the wool damping in place is stapled on the inside of the brace ie before the baffle was bolted in place and I did attempt to remove the baffle but it just refused to budge so finding there was enough slack I just cut through the staples.
Carefully undoing the 4 bolts and holding the rear of the mid ready to take the strain as it drops into the enclosure was awkward, the driver is very heavy and difficult to manoeuvre with one hand all the time being mindful of dropping/fumbling it and damaging the dome.
A few months ago I satisfied a long standing itch to get some ATC SCM100ASL monitors, I was very familiar with their sound having regularly come across them in post production/dubbing suites/recording studios via the day job a few moons ago now.
A nice pair of domestic 'classic' versions in piano black(car black?) that had been fairly recently serviced(2016) with new SL bass drivers, mid super domes and new SEAS tweeters came up and I couldn't resist.
The only thing that bugged me was the mids-they hadn't updated the waveguides when they were re-domed to Super dome spec.
I've no intention of going to the expense and (now) big shipping palava of a tweeter upgrade as I'm more than happy with how they currently sound but I enquired at ATC if the curved mid waveguide were available as spares and if a swap was doable diy.
Peter Guppy was very helpful, he pointed out the dangers and pitfalls, in particular the consequences of a cock up would mean completely new drivers(£1250 each!!) as ATC no longer re-dome motor units made before 2006 owing to plating corrosion in some of the older drivers.
With some trepidation I ordered the parts and they arrived within a few days rather than the 10 weeks I was initially warned about.
These suckers weigh 65kg each and are firmly attached to their stands, laying them flat was a 2 person move.
Peter explained that I would need to remove the bass drivers as the mids are removed through the bass driver hole. I removed one of the tweeters to try and get a better view of the inside.
The new waveguide can be seen in the first pic.
Unfortunately the netting to hold the wool damping in place is stapled on the inside of the brace ie before the baffle was bolted in place and I did attempt to remove the baffle but it just refused to budge so finding there was enough slack I just cut through the staples.
Carefully undoing the 4 bolts and holding the rear of the mid ready to take the strain as it drops into the enclosure was awkward, the driver is very heavy and difficult to manoeuvre with one hand all the time being mindful of dropping/fumbling it and damaging the dome.
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