Efficient 4" speakers?

[Simon16v]

I'm looking for the highest 'sensitivity' most 'efficient' loudest midrange/fullrange speakers for a new project I'm doing.

Currently I'm using 2 x 4" car speakers with a sensitivity of 88db

I can stretch to a 5" but would rather keep them small as its for a portable.

I'm on a budget, so cheaper the better...anything under £100

The quality is not a massive issue nor the bass output

I wonder if you can recommend me any?

 

[IG81]

I heard good things on this one:

4FE30 4'' MID HIGH SPEAKER

At about 60% of the regular going price, Recone Kits offers a good deal, especially for a driver with a neo-magnet. Maybe it's cheaper in Europe locally or online too for you since it's an Italian mfg. 91dB is not bad at all for 4" IMO.

IG

 

[planet10]

Sd is a term in the equation for the efficiency of a loudspeaker so is a limiting factor in effiecincy. The most efficient of the usual candiadates is the FE126En (a 4.5" driver)

dave

 

[Simon16v]

Nice, They look great. Thanks

Do you know any in 4Ohm?

 

[Saturnus]

The Monacor SP-60/4 is the best 4" high efficiency, almost full-ranger that can also play real bass at a reasonable cost. Highly recommendable. A true gem.

SP-60/4 - Monacor HiFi bass-midrange speakers 60Wmax 4Ω - Europe Audio

It's "only" 90dB/w/m but it's also 4 ohms so for all intent and purposes except battery life if that's an issue it's equal to a 93dB/w/m 8 ohms driver (like those suggested above).

 

[Boden]

I am afraid, once the Monacor is Baffle Step corrected, its real efficiency will be around 84 db/m.

Eelco

 

[Saturnus]

I am afraid, once the Monacor is Baffle Step corrected, its real efficiency will be around 84 db/m.

That would be the case of all 4" drivers in compact enclosures so why single out the Monacor? It's absolutely brilliant for the price.

And there are tricks to avoid having to baffle-step correct any driver, so why even bother posting it?