Nice work, an exciting stage!
Speaking of sanding I have been doing a fair bit of it practicing finishing on small furniture projects and just switched to Mirka abrasives. Wow, what a difference, super recomended if you wind up needing more. I found some cheap in the UK from Dr Abrasiveson ebay 🙂
Speaking of sanding I have been doing a fair bit of it practicing finishing on small furniture projects and just switched to Mirka abrasives. Wow, what a difference, super recomended if you wind up needing more. I found some cheap in the UK from Dr Abrasiveson ebay 🙂
I see mid and tweeter holes, did the lab12's go? I would use something more efficient if you plan to use it with subs.
Hi Kipman,
I decided to go with a 2 way 'midtop' and use a pair of 15's below crossed around 250Hz. A bit later on I tried the 2 way on top of my 80Hz midbass horns and decided to go with that.(I couldn't bring myself to sell them after the work I put into building them 😀) The pic shows the MEH sitting on top of the midbass horn enclosure. I have size matched so it looks like a matching design to the midbass horn.
The midbass horns are a tiny bit more than 1/4 wavelength rule but they work well. (well enough for my old ears anyhow)
Cheers,
Rob.
I decided to go with a 2 way 'midtop' and use a pair of 15's below crossed around 250Hz. A bit later on I tried the 2 way on top of my 80Hz midbass horns and decided to go with that.(I couldn't bring myself to sell them after the work I put into building them 😀) The pic shows the MEH sitting on top of the midbass horn enclosure. I have size matched so it looks like a matching design to the midbass horn.
The midbass horns are a tiny bit more than 1/4 wavelength rule but they work well. (well enough for my old ears anyhow)
Cheers,
Rob.
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Thanks Graham,
I usually buy Norton abrasives when I'm flush,(at the moment it's the unbranded ebay specials 😀) I'll have a look at the Mirka stuff.
Rob.
The Mirka abrasives with a Mirka Deros sander makes for almost completely dust free sanding. It's quick and easy obtaining a superb finish too.
So to continue the snail pace project I have painted the cabs, done some initial outside measurements and moved them into my room so that I can concentrate on the midbass / midrange crossover. (the midbass measures really different outside due to it relying on floor / room reinforcement. Makes it difficult to setup outside.
The midrange / tweeter crossover point is pretty much dialled in, just midbass /midrange xo needs work. Sub is just a single ported 15" fane in the wrong place at the moment (need to build some boxes for my lab12's to do multiple subs next)
The midrange / tweeter crossover point is pretty much dialled in, just midbass /midrange xo needs work. Sub is just a single ported 15" fane in the wrong place at the moment (need to build some boxes for my lab12's to do multiple subs next)
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That looks very nice Rob, beautiful job !
Some day you guys are gonna shame me out of puttin duratex on everything Lol
fwiw, i do xover/tuning work outside, and just let the chips fall where they may inside.
Knocking down room modes is about the only electrical room tuning i believe in...
just saw response...looking great !
Some day you guys are gonna shame me out of puttin duratex on everything Lol
fwiw, i do xover/tuning work outside, and just let the chips fall where they may inside.
Knocking down room modes is about the only electrical room tuning i believe in...
just saw response...looking great !
Thanks Mark,
I usually do all my setup outside but the midbass horn starts rolling off at 150Hz when raised up in the air with no floor / wall reinforcement. Groundplane measurements show it is really flat in its passband so I can rely on it being ok as long as it measures flat through the xo in room (if that makes sense ?) It's a bit like trying to measure a corner horn outside, no corners will skew the measurement..
As long as I get close to the Harman target curve with a smooth phase curve I'm happy enough 😀
Cheers,
Rob.
I usually do all my setup outside but the midbass horn starts rolling off at 150Hz when raised up in the air with no floor / wall reinforcement. Groundplane measurements show it is really flat in its passband so I can rely on it being ok as long as it measures flat through the xo in room (if that makes sense ?) It's a bit like trying to measure a corner horn outside, no corners will skew the measurement..
As long as I get close to the Harman target curve with a smooth phase curve I'm happy enough 😀
Cheers,
Rob.
