Rotel RB981 into 4ohms

S

stato

Junior Audioholic
Hi,
I bought the Rotel about 5 years ago and from memory is stable at 4ohms but cant find any info to verify that. Also if it is how much power would it be per channel considering it is rated at 130wpc @ 8 ohms etc.
Any info would be appreciated... Thanks.
 
M

markw

Audioholic Overlord
I have their 991 and it's had no problems four ohm driving Maggie 1.6's...

...but these are a fairly constant four ohms. Your speakers impedance curve may come into play here. i.e. Some speakers drop below four ohms even though they are rated at four ohms (nominal).

Oh, the 991 is rated at 200 wpc @ eight ohms and 300 wpc @ four ohms.
 
S

stato

Junior Audioholic
Thanks markw.
Going on your specs that 200w becomes 300w @ 4ohms for your 991 would it be fair to say the 981's 130w becomes about 190w per channel?
Also, I have a set of Jamo E870 fronts rated at 150w constant to 220w peak 4ohms. I can not find a sensitivity rating for them but do you think they would benefit from a bit more power from say a Rotel1070?
 
M

markw

Audioholic Overlord
IMNSHO, any speaker can benefit from more power.

stato said:
Thanks markw.
Going on your specs that 200w becomes 300w @ 4ohms for your 991 would it be fair to say the 981's 130w becomes about 190w per channel?
Also, I have a set of Jamo E870 fronts rated at 150w constant to 220w peak 4ohms. I can not find a sensitivity rating for them but do you think they would benefit from a bit more power from say a Rotel1070?
It leaves more headroom for those instantaneous peaks. But, common sense should always prevail: Is something starts to sound funky, turn it down NOW! Something is complaining.

Dunno about the 4 ohm spec on the 981 but for a ballpark figure, I'd say it's about right. It's most certainly considrably more than the 8 ohm spec.
 

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