Power needed
38–595 W
per channel, into 8 ohms
To hit 95 dB peaks at 3 m from a pair of Monitor Audio Radius 90, you need at least 38 W a channel. Anything from about 75 W to 595 W a channel is comfortable; past that, more watts stop buying you anything.
Show the working
- 95 dB target at the seat
- +4.8 dB for 3.0 m of distance
- -3 dB for a stereo pair
- -81.0 dB effective sensitivity
- 2 dB allowed for optimistic published sensitivity
- Published sensitivity 83 dB, used as 81.0 dB per watt.
Peachtree Carina with the Monitor Audio Radius 90
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (300 W to 580 W) - a stiff supply that copes with hard loads.
Full Peachtree Carina specs
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Clear this amp
214 integrated amplifiers suit the Monitor Audio Radius 90
Also show the 19 we do not recommend
1
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (300 W to 580 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
2
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (300 W to 450 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
3
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (300 W to 550 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
4
Good match
5 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
5
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (390 W to 600 W).
Far more expensive than the speakers. Spend it on speakers first.
6
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
7
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file, so we cannot judge current delivery.
Far more expensive than the speakers. Spend it on speakers first.
8
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
9
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
10
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
11
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
12
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Rated at the same 400 W into 4 ohms as into 8 - the power supply runs out before the load does.
Far more expensive than the speakers. Spend it on speakers first.
13
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (235 W to 350 W).
Far more expensive than the speakers. Spend it on speakers first.
14
Good match
4 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
15
Good match
4 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
16
Good match
6 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (135 W to 250 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
17
Good match
6 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (150 W to 250 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
18
Good match
3 dB of headroom - enough, but at the modest end for this speaker, which takes up to 595 W.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (75 W to 150 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
19
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (220 W to 340 W).
Far more expensive than the speakers. Spend it on speakers first.
20
Workable with care
Just barely enough (2 dB of headroom). Fine at normal volume, no reserve for peaks.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (55 W to 105 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
Showing the best 20 of 214. Narrow it with the price range below, or a different budget split.
64 power amplifiers that would also drive them
Listed separately because they are not a complete system: a power amplifier has no volume control and no inputs to speak of, so you need a preamplifier or a streaming preamp as well. Worth it if you already own one, or if you want to buy the two halves separately.
1
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
2
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (400 W to 800 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
3
Good match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 1 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (450 W to 850 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
4
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power rises usefully into 4 ohms (400 W to 600 W).
Far more expensive than the speakers. Spend it on speakers first.
5
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power rises usefully into 4 ohms (400 W to 600 W).
Far more expensive than the speakers. Spend it on speakers first.
6
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 1 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (250 W to 450 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
7
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
8
Good match
12 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (580 W to 800 W).
Far more expensive than the speakers. Spend it on speakers first.
Were these amplifier recommendations useful?
It helps us tune the matching, and we read every comment.
Thanks. Anything you would add?
Optional, and it goes straight to the person who maintains this page.
Thanks - noted.
Sensitivity and impedance figures are the manufacturer's own. We read sensitivity as dB at 2.83 V/1 m and take 2 dB off it, because published figures run high. Treat the result as a well-founded starting point, not a measurement. Full Monitor Audio Radius 90 specs.
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