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What about the other way around?

Hey everyone,

I understand that an SS amp in general will double (or some percentage of doubling) in output when going from 8 to 4 ohms.
What about the other way around?

Assuming the reverse is true that wattage output will be halved as resistance doubles, would a pair of 15 ohm Rogers LS3/5As (82.5dB/W/M) be too much of a load for a 50 wpc Forte 1A?
With ~25 wpc, should I be concerned about clipping?

This is for a possible bedroom (12' x 16') setup.  Semi near field (about 6' or 7' away) classical, jazz and some light rock listening at low to moderate volumes.
 
Thanks!
hleeid

Showing 2 responses by russ69

russ69's avatar
russ69
3,579 posts
 
"...I understand that an SS amp in general will double (or some percentage of doubling) in output when going from 8 to 4 ohms..."

Generalizations can be a dangerous thing, it's best to go by the specs for your amp than to make generalizations. I think you'll be fine with the Forte1A.

"...should I be concerned about clipping?..."
You should always be concerned about clipping but play at reasonable volumes and you'll save yourself a lot of problems. 
russ69's avatar
russ69
3,579 posts
 
"...Would the higher impedance speakers be more ''efficient'' on the 4 ohm posts?..."
No.

"...How would the different impedance whether using different posts or different speaker loads affect the output for tube amps?..."
A tube amp can change frequency response due to the impedance the amp drives. Try each one and use the one that sounds best.
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