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two 4 ohm woofers, 2 channel mono amp


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frizkysquirrel 
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Joined: January 13, 2008
Location: Michigan, United States
Posted: August 18, 2008 at 6:06 PM / IP Logged  
so i always wondered.
i have this 2 channel mono amplifier.
i have two 4 ohm subwoofers.
what would it do if i wired one woofer bridged, and the other on one of the channels. what load would the amplifier see and how? im assuming this would be a bad idea, but im still curious, lol.
frizkysquirrel 
Member - Posts: 47
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Joined: January 13, 2008
Location: Michigan, United States
Posted: August 18, 2008 at 6:14 PM / IP Logged  
im sorry, i guess im dumb. i meant to put amplifier wiring in the topic, i dunno what happened?
i am an idiot 
Platinum - Posts: 13,667
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: August 18, 2008 at 6:29 PM / IP Logged  
Do you have a mono amp with 2 sets of speaker terminals, or do you really have a 2 channel mono amp?  Or is it a 2 channel Bridgeable amp?
frizkysquirrel 
Member - Posts: 47
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Joined: January 13, 2008
Location: Michigan, United States
Posted: August 18, 2008 at 6:48 PM / IP Logged  
its a 2 channel amp, but it has a mono/stereo switch, making the signal to both channels the same. but it is a bridgable 2 channel amp.
i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: August 18, 2008 at 7:23 PM / IP Logged  
Chances are the amp is only capable of powering a 4 ohm bridged load.  Bridging one 4 ohm woofer is all it will be capable of.  If you insist on bridging one and running one off of one of the channels,  the channel that has the extra woofer connected to it will be seeing a 1.333333 ohm load.  The bridged woofer will be getting twice the power of the other woofer.  Way back in the past it was not uncommon for us to use passive crossovers and bridge an 8 ohm woofer across the amp and run a pair of 6 X 9 inch full range speakers wired in stereo.  This would yield a 4 ohm mono load across the amp.  I would not reccomend trying this with a 4 ohm speaker bridged and another wired in stereo on a single channel.
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: August 18, 2008 at 9:48 PM / IP Logged  
Amplifier make/model?
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frizkysquirrel 
Member - Posts: 47
Member spacespace
Joined: January 13, 2008
Location: Michigan, United States
Posted: August 18, 2008 at 11:41 PM / IP Logged  
the make was a metrik max-802 lol.
it mean it never gave me any problems what so ever. ran cool only seemed it put out its rated power of 300 rms bridged to one 4 ohm JL 12 w3v3. but i sold it to a friend that wanted it.
its only downside was it had fans and they were kinda noisy, tired to fix em but the amp case was bend slightly.
frizkysquirrel 
Member - Posts: 47
Member spacespace
Joined: January 13, 2008
Location: Michigan, United States
Posted: August 18, 2008 at 11:42 PM / IP Logged  
omg i don't know what i did to that last post?
this was the hyperlink i tried to post

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