AudioCircle
Industry Circles => GR Research => Topic started by: Kristian105 on 5 Feb 2018, 02:54 am
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This is my first post.
I got these insignias for the sole purpose of doing the upgrade... years ago. I finally got to them and decided to build new cabinets. This project is my practice run to get back into it before I build things that will cost too much to replace.
I realized today that I made the speaker 3/4 of an inch wider than the original because of the material thickness, will this affect the crossover?
(http://www.audiocircle.com/image.php?id=175679)
(http://www.audiocircle.com/image.php?id=175680)
(http://www.audiocircle.com/image.php?id=175681)
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Added surface reflections will effect the response. A large round over will help.
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Your internal bracing will take up some of that excess. Add corner blocks, maybe even laminate some 1/2" mdf to the open areas of the sides. All these will help get your internal volume closer to spec, and make the cabinet better at the same time. Add some No Rez or carpet padding also. If you can get within 5%, you're close enough.
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Your internal bracing will take up some of that excess. Add corner blocks, maybe even laminate some 1/2" mdf to the open areas of the sides. All these will help get your internal volume closer to spec, and make the cabinet better at the same time. Add some No Rez or carpet padding also. If you can get within 5%, you're close enough.
Yeah, I figure it was over about .1 cubic feet. I was planning on fitting the crossover before I load it up with additional mdf.
Is it the internal baffle with or external that affects the crossover? Just wondering. I plan on using the original baffl cover and grill and cutting a large round over.
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It is the additional baffle size on the outside that effects the response.
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[quoteIt is the additional baffle size on the outside that effects the response][/quote]
That's what Danny was referring to "...added surface reflections..." I have used a 3/4" radius round over bit on my table-mounted router for most cabinets I've built over the years. I think you'd need that large of a round over on your cabs (vertical baffle edges).
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Plus roundovers are always a good thing to do for the purposes of minimizing edge defraction.
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I was planning on doing a round over along the entire front and then using the front cover off of the original speaker along with original grill. Are there any sonic drawbacks to this?
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Got some crossover work done
(http://www.audiocircle.com/image.php?id=175892)
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I changed the center brace and glued in a few pieces of mdf to bring the volume down to .38 cubic feet. Hopefully I’ll Have them ready for finishing by the end of the weekend.
(http://www.audiocircle.com/image.php?id=176248)
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That seems like a ton of work for such inexpensive speakers. Did you ever think of using better drivers? They can be inexpensive.
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its fun. Practice. I’m curious about the outcome. I’ll be building a few pairs of Danny’s other speakers when the weather warms up, I have a set of N3tls and a set of skinny 6s in boxes waiting to go.
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Ha, ha. OK. Sounds great.... or shall I say, will sound great!
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I hope so. I always like to try to build out cheap stuff just for fun. I’m a car guy, from restoration to modification to painting and welding. I’ve done rolls Royce’s and Austin healeys, but I always loved me an 80’s Chevy cavalier!
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What is it with GM? They finally made the Cavalier look so slick - then they discontinued it. They did the same with the Pontiac Fiero - the '88 looked awesome. :duh:
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I had a fiero! Burgundy exterior and tan interior. I wish I still had it knowing what I know now, it would be amazing.
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Some progress has been made. I used some leftover mass loading material I had from a previous automotive install and some regular fiberglass insulation. Tomorrow I’ll be bringing them to the paint shop. I’m regretting using screws, especially since I ended up buying like 20 clamps anyway. Oh well. Nothing money won’t fix!
(http://www.audiocircle.com/image.php?id=176424)
(http://www.audiocircle.com/image.php?id=176425)
(http://www.audiocircle.com/image.php?id=176426)
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I'd pull the insulation blocking air flow to the port.
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I'd pull the insulation blocking air flow to the port.
It’s clear. Just a bad picture. I made that mistake with my av1s. Packed them full of polyfil like a sealed subwoofer and they sounded awful. I was amazed at the difference when I pulled all the polyfil out of them and did it right with fiberglass.
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They're looking good. If the baffle is a bit too wide, there may be a slight bump in the lower mid bass at the baffle step point, but the tightening of everything else should be an overall positive result. Eager to hear what your impressions are.
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If the baffle is a bit too wide, there may be a slight bump in the lower mid bass at the baffle step point, but the tightening of everything else should be an overall positive result.
It starts to round over at about half an inch too wide. How much damage can half an inch do?
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Bondo, primer, primer again
(http://www.audiocircle.com/image.php?id=176463)
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It starts to round over at about half an inch too wide. How much damage can half an inch do?
Danny can tell you exactly, but I imagine that if the whole front baffle is only 1/2" wide, I doubt if you'll hear a bump. It might measure a couple of db.
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Orange you glad they’re orange?
(http://www.audiocircle.com/image.php?id=176504)
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These are going to be absolutely most kick ass low end speaker ever. Eager to hear your listening impressions.
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Wow, that looks nice!
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That's a great color :thumb:
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Thank you :) 20 years painting. It’s a mistubishi color. I’ll post a review this weekend.
(http://www.audiocircle.com/image.php?id=176539)
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Awsome dude 8)
Picked up a pair of the Insignia outdoor/waterproof/resistent speakers a fw years ago for my buddy to use on his patio. Even inthe plastic/junk stock enclosures and stock networks, they sounded remarkably good. Loking forward to hearing what you think of these now
jay
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I’m a fan of fiberglass too. Just sounds better IMOP. Took me a while to figure that out though and I hate working with the stuff. Learning to trust my ears more as I get older.
That’s how I discovered G&R Research. Saw a cool pic on line & went to Rocky Mountain and listened.
I’ve had a lot of fun building Danny’s designs since then. He designs old school tone with real bass at working man prices. Not too many guys doing that in the hi-fi world anymore.
I sometimes wonder if he would design the same if he lived elsewhere? Texas has a different environment than where I live. I’m thinking it influenced his taste away from “East coast sound” and leaned it toward a “live sound preference”.
Now back to the thread. Please let us know What you think of the sound of a concentric driver. I have not found one that imaged to my liking yet. The cone as a deep wave guide seems to limit dispersion and give “head in a vice” imaging. If you move the highs change quite a bit.
One exception to that was the early 80’s “Time window” and Time frame” models. totally wanted a pair of those. Found out 30 years later it was a coaxial driver. Who would have thought?
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Those look great. Wish I had your painting skills :thumb:
Mike
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So I've been listening to these speakers for the last week and doing some AB comparisons. I must say that they really exceed my expectations in every way! I was planning on sticking these out in the garage while I build my N3TLs, but i think they'll be staying in my main system for the time being.
Before I began this project I brought the unmodified insignias inside and plugged them in for a night. My girls reaction was a curled lip and a question.. "why does it sound.. so... bleehhh". Her reaction after the rebuild was hilarious. She literally stopped in her tracks (which doesn't happen.. ever) and just stood there; mouth agape.. she turned to me and smiled wide. "Wow, that's incredible! I can't believe how good they sound.. they sound better than the other ones!" And its true.. they do.
They obviously aren't the best speakers i've ever head, but they are enjoyable and leave little to be desired. The on and off axis response is similar, pacing around while listening is no problem. They do sound better a little further away though, near field is a little brash. Overall they are a little on the warm side tonally (but not too much). Treble is realistic and at times impressive; not world class, but enjoyable. Bass is tight.. real tight, the weight of the cabinet is noticeable. I made the cabinet a little too wide for the crossover, but there are no noticeable issues, bass is very clean, tight, and dynamic down to about 50hz. Midrange is clean and realistic as well. Imaging is pretty damn good. Movies and Music both sound awesome.
I'm really happy with these. I'm honestly surprised at how good they sound. They really hold their own.
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Thanks for the listening impressions. :thumb:
Glad they sound as good as they look. That is a really stunning pair of cabinets.
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Cool man, glad it all worked out so well and tha t they both sound and look great . Never hurts when you build them yourself, adds that little extra something 8)
Good luck with your N3 Tl build, you're going to love them, fantasic speakers .
jay
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Almost finishing building these stands for the insignias. I have a feeling I need to double up the base or it will warp.
(https://www.audiocircle.com/image.php?id=180335)
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I’m trying joint compound on the soft edges of the stands. See how it holds up.
(https://www.audiocircle.com/image.php?id=180863)
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Done as it’s gonna get
(https://www.audiocircle.com/image.php?id=181338)
(https://www.audiocircle.com/image.php?id=181339)
(https://www.audiocircle.com/image.php?id=181340)