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Old 29-07-07, 03:30 AM
Elven Elven is offline
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Stupid Question Perhaps But

Right

A few week back my Sony MHC-RG475S blew its right speaker on the midrange, by a fluke of luck I found a whole system for only £59, now the unused stack is in use upstairs for me on headphones and I have two woofers now downstairs so I am wondering, what would be the stress on my amp if I plugged in both woofers? would it split the power between them or could damage occur?

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Old 29-07-07, 08:34 AM
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Rastalovich Rastalovich is offline
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I`d have to ask a broadcast engineer to get a definative answer, but imo, based on basic electronics, as long as u have them in the same source it would be the same as plugging 2 regular speakers in a 1 speaker output. The power outputed, afaic, would be paralleled across the 2. (shared) The ratio being the different impedence of the 2.
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Old 29-07-07, 08:37 AM
Elven Elven is offline
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So I could in theory have a left and right woofer all be it in a "mono" styled setup, being as both woofers are perfectly identical.
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Old 29-07-07, 09:04 AM
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Rastalovich Rastalovich is offline
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As far as the theory goes, u could go for a quadraphonic rumble. In the same breathe the output would be the same to each, but halfed (quartered for quad) to each one, so as long as the woofer isn`t a dumb one u could play with a knob to adjust it.

How good it would sound and feel irl, I don`t know. Particularly as the recordings of woofer based effects are normally banking on a X.1 setup, perhaps not X.2 or .4

Be kewl to try as a goof tho I`d be interested if the outputs overlapped too much to cancel some things out.
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Old 29-07-07, 09:11 AM
Elven Elven is offline
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Well I shoved it in a moment of insanity I guess, and the sounds defiantly more heavy, makes some Enya and Clannad sound really intense think I may go for a front and rear woofer and arrange the left/right channel for optimal stereo
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Old 29-07-07, 03:18 PM
quietfreek quietfreek is offline
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does the sub have its own amp inbuilt or does it run of an amp in the main unit?

if the sub is active (own amp) then ull b fine just rigging up to 2 subs 2gether volume will be unaffected if u use high level inputs and wire in parralell rather than series

if the sub is powered by a single amp in the main unit then wireing both together will halve the inpedence that the amp sees, this will vastly increace the current draw through the amp and with it power and heat dissapation in the power mosfets. depending on how well the amp was designed will depend on wheter it can cope but you run the risk of basicly melting the amp.
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Old 29-07-07, 11:31 PM
Elven Elven is offline
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Quote:
Originally Posted by name='quietfreek'
does the sub have its own amp inbuilt or does it run of an amp in the main unit?

if the sub is active (own amp) then ull b fine just rigging up to 2 subs 2gether volume will be unaffected if u use high level inputs and wire in parralell rather than series

if the sub is powered by a single amp in the main unit then wireing both together will halve the inpedence that the amp sees, this will vastly increace the current draw through the amp and with it power and heat dissapation in the power mosfets. depending on how well the amp was designed will depend on wheter it can cope but you run the risk of basicly melting the amp.
The amp takes power from the AMP this is a Sony MHC-RG475S and I have a spare one of these upstairs so I can have a play, had a long night of Nightwish blasting out and no problems so far but I don't take it past about 50% of it's power so I hope it is fine.
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