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Mystery with woofers. Help!

I am the proud second owner of three-way, sealed design, YG Hailey 1.2’s, and have enjoyed them immensely. They make plenty of articulate bass, provided that the recording is up to snuff. The bass is supplemented by one Rythmik sub, crossing over at 50hz.

Over time, I have noticed almost zero excursion/movement from the woofers so last night I decided to get down and put my ear/hand up to the woofers and it seems like NOTHING is coming out of them, even at pretty high playback levels. Again, my curiosity was not piqued by a lack of bass during listening, but rather, the lack of any visible movement from the woofers. Am I missing something? Fwiw, I am feeding the YG’s with Pass X260.8 monos, connected to the upper speaker terminals. Thoughts?

willyht

Showing 2 responses by elliottbnewcombjr

elliottbnewcombjr
5,886 posts
 

woofers are the easiest to see/feel movement. they are not working. both sides? unlikely driver failure if both sides, so why?

to allow bi-wire you have OEM straps between the woofer and upper drivers terminals, normally connected for full range use. are they in place? using a sub, they might be removed

lower/raise the sub’s crossover, anything?

fully disconnect the sub, any change?

typically you are supposed to go in the sub and back out of the sub to your amp without the low bass the sub is doing? IOW, no signal is getting to the woofer

what specific model sub do you have?

can you get to the woofer’s terminals? have a meter? touch wires to any other small portable speaker you have, see if you can see/feel/hear anything.

to prove they are ok, remove sub, put straps in place, hook up speakers, woofers working?

a cd with specific frequency test tones will make it easier to diagnose problems when they occur.

an historic low price of this which has 29 1/3 octave tracks

https://www.ebay.com/itm/226096080476?_skw=amazing+bytes&itmmeta=01JG9PDRA8C8Q165JERJ63AZF7&hash=item34a460665c:g:VSwAAOSwVu9mHojR&itmprp=enc%3AAQAJAAAA8HoV3kP08IDx%2BKZ9MfhVJKkEyFU6rmOm8alRQjHtGGjsfFY6KHXeZv%2BV5fdbGppQQZOkViuTW3ZdxmFsd4rEaiejBPAp%2BOp3drdH4nuCGGA1n0Lyz6hg0WPRhXtZeHT88vrtl8MRzwzNQ9M4traBoN5DaOG7iOLgGAj%2BSXz7HZp2CO1h%2Fgsfn0EF7RI7jcKHXZm1C7RNGOUvyJHHX8LYiWuEDl9w%2F91q9uQPxTgFBhzYv3zNdWpg24I0qNV9LR4EJrXRXDVkg6MK%2BuAmXGA3bMqV7oKkjZtOu7JsMFWVsmpyR2xHFstRUQt%2F6Plm8OQfgw%3D%3D%7Ctkp%3ABk9SR6CFt7aCZQ

 

elliottbnewcombjr
5,886 posts
 

low bass is the most power hungry

what model sub?

what amp(s)?

at issue is whether you send ALL frequencies to the amp and it then continues to makes low bass (ignore the speakers for a moment) or if you 'offload' low bass to the sub and then everything else above that to the amp, then to the speakers.

at issue is whether

1. the amp tries to make low bass or if a self-powered sub makes it's own low bass

2. all frequencies prior to sub crossover, jumpers in place: if the signal contains all frequencies, then the woofers will still be trying to make low bass

or, low bass removed by sub crossover, jumpers in place, the woofers only try to produce upper bass. the sub's adjustable crossover is of importance here.

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