Fairly new Spires ...Woofers are flapping like crazy!!! Please help?
Hi folks:
I have a 1 year old pair of Spires which have been working just great as far as i knew. They are indoors with no direct sunlight on them and ofcourse in a smoke/tobacco free environment. A week ago or so i did the following:
1. I raised them onto a 2 foot wooden block(for lack of a better word) to improve vertical imaging, which works great btw now as i sense no loss in tone when i sit or stand.
2. I removed the front feet to make the rake angle vertical, as close to zero as possible based on a few posts we had a couple weeks ago here on the forum.
3. I changes the xover of the Spires(in my pre-pro) from 60Hz to full range as i wanted to have a pure Spires only Stereo setup with no sub involved. Sub to be used only for MCH sources.
Problem(which i don't think relates to the above 2 things i did)...
When i play low frequencies as normal comfortable listening levels, the woofers flap all over the place. I know flap very well...as the original woofers in my 20-year old Honda tell me everyday. You learn to enjoy car music with greatly distorted bass from the woofers
.
Anyways, Thinking it was one of the two things i did, i then placed the Spires back to my carpeted floor and the flap was reduced significantly but was still there.
I lifted one of the Spires speaker (heavy thing indeed) and held it in my arms while the tests was running. The flapping was loud as before when it was on the wooden 2 foot block.
BTW, the test program i used was a shareware function generator(see attachment) called Test Tone Generator. I use it to sweep frequencies from 10Hz to 20KHz in my speaker tests but in this case, i only run one frequency at a time.
I found that i got the flap from 20Hz all the way to about 55Hz or so. At 60Hz to about 400Hz, all kinds of obscene-sounding-woofer-panel resonances could be heard which was a shocker to me indeed!!! But after running the sweep for a while (about 15 minutes at higher volume levels) the resonances disappeared. The flap continued for frequency levels below 60Hz in both speakers.
What could be the cause and how can i get rid of the flap??? Remember the flap was inaudible of the Spires were crossed at 60Hz from the sub. But when i run them full-range, then they flap like crazy. This is done at normal listening levels of about 60dB on my home.
Hi folks:
I have a 1 year old pair of Spires which have been working just great as far as i knew. They are indoors with no direct sunlight on them and ofcourse in a smoke/tobacco free environment. A week ago or so i did the following:
1. I raised them onto a 2 foot wooden block(for lack of a better word) to improve vertical imaging, which works great btw now as i sense no loss in tone when i sit or stand.
2. I removed the front feet to make the rake angle vertical, as close to zero as possible based on a few posts we had a couple weeks ago here on the forum.
3. I changes the xover of the Spires(in my pre-pro) from 60Hz to full range as i wanted to have a pure Spires only Stereo setup with no sub involved. Sub to be used only for MCH sources.
Problem(which i don't think relates to the above 2 things i did)...
When i play low frequencies as normal comfortable listening levels, the woofers flap all over the place. I know flap very well...as the original woofers in my 20-year old Honda tell me everyday. You learn to enjoy car music with greatly distorted bass from the woofers
.Anyways, Thinking it was one of the two things i did, i then placed the Spires back to my carpeted floor and the flap was reduced significantly but was still there.
I lifted one of the Spires speaker (heavy thing indeed) and held it in my arms while the tests was running. The flapping was loud as before when it was on the wooden 2 foot block.
BTW, the test program i used was a shareware function generator(see attachment) called Test Tone Generator. I use it to sweep frequencies from 10Hz to 20KHz in my speaker tests but in this case, i only run one frequency at a time.
I found that i got the flap from 20Hz all the way to about 55Hz or so. At 60Hz to about 400Hz, all kinds of obscene-sounding-woofer-panel resonances could be heard which was a shocker to me indeed!!! But after running the sweep for a while (about 15 minutes at higher volume levels) the resonances disappeared. The flap continued for frequency levels below 60Hz in both speakers.
What could be the cause and how can i get rid of the flap??? Remember the flap was inaudible of the Spires were crossed at 60Hz from the sub. But when i run them full-range, then they flap like crazy. This is done at normal listening levels of about 60dB on my home.
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