Horrible resonance with new IR3's; ideas on a new 3" dome MR
Blew one of my MD 140's and had a set of brand new DLS IR3's sitting in a box for the last 4 years. Decided to drop them in and holy shit what an annoying resonance. Took door panels off thinking maybe it was the cover on the dome and sure as shit it was the speakers themselves (held in my hands with no cover). At 630Hz I could apply some pressure to the rear enclosure from the side and temporarily eliminate the sound, but would come back once released. At 400, 500 forget about it as nothing would get rid of it. Brand new and both mids do it. Read a few threads where someone else identified this a few years ago and could not eliminate it as it seemed it was inherent in the dome itself (IMO enclosure really).
Needless to say that leaves me sucking crap. Not sure I want the Dyn domes because they need to be crossed way to high (Fs is like 470 I think ) and other than the annoying resonance the IR3's are crossed over at 400Hz and sound wonderful. Have been contemplating 3" cones (in upper doors), but now I'm irked because I am forced to find a solution much sooner.
Any ideas on comparable domes that can be crossed over around the 400 range and not limited to 100db output?!
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
I always thought most domes had trouble playing anywhere around/below 500Hz at higher volume. A cone mid/full range might do better, could even cross lower if you wanted to.
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
Thats pretty true, there always exceptions, but the main advantage of a dome over cone is there's no need to worry about an enclosure-a big consideration when looking at fitting it in a car...
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
Quote:
Originally Posted by The Baron Groog
What about the new HAT Legata L3 Pro Dome? 400Hz with 24dB/Oct, 94db @ 2.82V/1m
Could you use a jubilee clip to tighten the basket on the DLS and stop the resonance?
Maybe some butyl rope or dynamat between or for further damping?
I honestly don't think the clip or any external damping would help and the clip likely would distort (even if minimally) the integrity of the enclosure, possibly causing some unwanted anomalies in output. I was reading on the new HATs and they look promising even though the intended designed of high end extension might not come into play with my system, but they are in my wanted price range and cross low enough for my compromising install (in stock upper door location).
I just have to question if there wasn't a time when the IR3's had manufacturing issues. I know others have had them crossed around the same and even lower with no issues. I can't imagine anyone even competing with the way this sounds as even at SQ levels it clearly audible and seriously detracting.
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
Quote:
Originally Posted by emilime75
I always thought most domes had trouble playing anywhere around/below 500Hz at higher volume. A cone mid/full range might do better, could even cross lower if you wanted to.
That could be, but this occurs at talking levels of output. Other than the resonance the mids sound very nice with output at substantial levels. I was looking the cone route and will be trying a set that Don (6spdcoupe) suggested, but beaming might be an issue. Might just have to bite the bullet and dump the whole stealth approach for the sake of quality I want.
Keep in mind I use to play my MD 140's at high volumes and crossed at 500 for years and they sounded great. It's when I lowered them to like 450 that one gave out (didn't realize Fs was 470 on that dome )
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
Quote:
Originally Posted by Dillyyo
I honestly don't think the clip or any external damping would help and the clip likely would distort (even if minimally) the integrity of the enclosure, possibly causing some unwanted anomalies in output. I was reading on the new HATs and they look promising even though the intended designed of high end extension might not come into play with my system, but they are in my wanted price range and cross low enough for my compromising install (in stock upper door location).
I just have to question if there wasn't a time when the IR3's had manufacturing issues. I know others have had them crossed around the same and even lower with no issues. I can't imagine anyone even competing with the way this sounds as even at SQ levels it clearly audible and seriously detracting.
Used several IR dome plus the UR domes, never had a problem. You must have a defect one. I have also never heard anybody with the same issue as you. Crossed at 500 with steep slope.
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
Quote:
Originally Posted by BeatsDownLow
Used several IR dome plus the UR domes, never had a problem. You must have a defect one. I have also never heard anybody with the same issue as you. Crossed at 500 with steep slope.
I feel it must be a manufacturing defect because it's not normal. I have only heard experiences like you other than a thread/poster on this forum who seem to express a buzzing issue on certain tracks with synths. Couldn't get rid of it and he also stated that he tried damping and taking it out of the door with no resolution.
Re: Horrible reonance with new IR3's; ideas on a new 3" dome MR
The Dayton done midrange that's manufactured by Peerless in India would be a great driver for $150, but at $40 it's just a ridiculous deal. But u can't cross it that low, unfortunately.
In my 25 years of working in this industry, I've listened to thousands of cars and I can count the ones that sounded great on two hands. Most of them have serious problems and some of the worst ones are IASCA winners... 50% of these guys have plans to change all the equipment in their cars because they don't sound good. In every case so far, none of the equipment has been the cause of poor performance. In every case, it's the installation, the adjustments or the system design. AW
Horrible resonance with new IR3's; ideas on a new 3" dome MR
) and other than the annoying resonance the IR3's are crossed over at 400Hz and sound wonderful. Have been contemplating 3" cones (in upper doors), but now I'm irked because I am forced to find a solution much sooner. 
Linear Mode
