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Bass Blocker


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CousinCleotis 
Member - Posts: 13
Member spacespace
Joined: May 29, 2003
Location: United States
Posted: January 19, 2004 at 9:48 AM / IP Logged  

Hi All,

     I want to install a Q Power bass blocker between a jvc head unit and a 4" jvc 2 way speaker.   My queation is which wire on the bass blocker is positive and which is negative?  One is green and one is green w/red stripe.  Does it matter?

                                           

Thanks, Cousin Cleotis

Bass Blocker -- posted image.
DYohn 
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Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: January 19, 2004 at 11:26 AM / IP Logged  
A "bass blocker" is generally a capacitor designed to function as a 6db per octave passive crossover.  It is connected in series with the speaker's positive lead.  It doesn't really matter which lead is which, so connect the striped wire to your amplifier and the plain wire to your speaker's positive trerminal.
CousinCleotis 
Member - Posts: 13
Member spacespace
Joined: May 29, 2003
Location: United States
Posted: January 19, 2004 at 11:38 AM / IP Logged  

Hi DYohn,

     Thanks for the response.

     I guess I shoud clarify.  This bass blocker has the green and green w/red going in one side and coming out the other, four wires in all.  I am running this off of the head unit, no amp.

     X-over point 5000Hz

     X-over slope 12dB

Thanks, Cousin Cleotis

Bass Blocker -- posted image.
customsuburb 
Gold - Posts: 1,813
Gold spacespace
Joined: January 17, 2004
Location: United States
Posted: January 19, 2004 at 12:22 PM / IP Logged  

The green is probobly the negative and the green with a red stripe should be positive. Hope this helps.

DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 19, 2004 at 12:45 PM / IP Logged  

Ah, if it is a 12db/octave crossover, then yes, it will have pos/neg on both sides.  It didn't come with any instructions?  Use customsuburb's suggestion above, and if it doesn't seem to work, switch the leads the other way around.

At 5000Hz crossover point, you will turn your speakers into tweeters.  You'll get no bass and very little mids out of them at that X-ove point.  It's no probelm, as long as you uinderstand that's what you'll get.

And by the way, running off your HU means your amp is the one inside the HU.  :)

CousinCleotis 
Member - Posts: 13
Member spacespace
Joined: May 29, 2003
Location: United States
Posted: January 19, 2004 at 2:24 PM / IP Logged  

Thanks guys!

No instructions with blocker.

Super tweeters is the sound i'm looking for. :)

Have a great day. 

Bass Blocker -- posted image.

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