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jakdedert jakdedert is offline
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Default jumping speakers

Roy W. Rising wrote:
jakdedert wrote:
Scott Dorsey wrote:
rookie wrote:
is it a bad idea to hook 2 speakers in-line from one terminal on the
reciever?
If you parallel speakers, you reduce the load impedance the amp sees.

If you put two 8-ohm speakers in parallel across an amp, the amp will
see a 4-ohm load. If the nameplate on the amp says "Minimum load
impedance 4 ohms" this is fine. If it says "Minimum 6 ohms" it is
not. --scott

But if one of the speakers is 4-ohms, things get interesting. The load
doesn't go down all that much (3.2-ohms), but the 4-ohm speakers will be
louder than the 8-ohm ones.

jak


The volume of the speakers really depends on their efficiency, with limited
regard to impedance.

Trying to put it in terms the OP will understand....

In fact, what will happen is that the 4-ohm speakers will draw twice as
much power. How that relates to loudness is more complex and
assumes--as you note--facts not in evidence. Also, the impedance at any
given frequency will vary, leading to a different response curve
compared to each being driven by its own amplifier.

For the OP; suffice to say that it's a crapshoot. As Scott says, if
both are 8-ohm (rated) speakers, and the amplifier is rated capable of
driving 4-ohm loads, it's probably 'safe' enough. If *either* of the
above is not true, probably not.

Whether it's a good idea requires more information. (It usually only
works well if both speakers are identical.)

jak
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