I have 8L of space for toys

[zerokelvin99]

Hi everyone!

I am building a small speaker for outdoors, and have an enclosure of 8L to play with..

I was looking up the Monacor SPH-60, and seemed ideal for the job, until I found that they can run out of steam at high SPL, especially with Xmax in vented cabinet. (Vb=7.2L, Fb=75Hz, Ip= 60WRMS).

Can anyone else suggest any alternatives? Single driver (6"?) is possible. My priorities are maximum SPL down to 80Hz with given power. IE sensitivity & bass

Cost is not so much an issue, neo is welcome !

Many thanks in advance

 

[zerokelvin99]

To clarify, my amplifier power for woofers is 2x60WRMS @ 4R.

Thanks!

 

[Inductor]

(FR) 5" or 6" for small enclosure

I guess you are in the margins of the impossible.
There is a possibility though for a larger enclosure (VB = 12.0 L) if you use very rare (in production/NOS) FR Tang Band W5-1880 5" Full Range Driver - pdf
Axiomedia - TB-Speakers - Full Range

 

[Inductor]

Another possibility is using Eikona 1 or 2 for your purpose.
The 1 needs larger box 8 to 10 L and is a 84.5 dB/2.83V/m driver.
The 2 needs a smaller enclosure, e.g. 6 L and is a 87.2 dB/2.83V/m driver, Re is also 6.00 Ohms.
Jordan loudspeaker drive units
http://www.ejjordan.co.uk/PDFs/Eikona_2_Reflex_7.pdf

Another is Re 5.50 Ohms, 60 RMS - 5" EAD E100HD+ pdf
EAD Webshop - EAD E100HD

Below is Eikona 2 and EAD E100HD+.
Regards.

 

[Lojzek]

zero,

Have a look at this one. In a well stuffed and sealed box
of yours, might be worth taking into consideration.

FR 16 WP - 4 Ohm (black)

 

[zerokelvin99]

Thanks, these all look great !

I'll get my simulating hat on, and get deep into WinISDpro

 

[zerokelvin99]

Slightly different field, but the Faital 5FE100 seems great too.

Drivers= 2, Vb= 5.1L, Fb=80.4.

Massive 5.2mm Xmax !

 

[zerokelvin99]

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An externally hosted image should be here but it was not working when we last tested it.

 

[Inductor]

Slightly different field, but the Faital 5FE100 seems great too.

Drivers= 2, Vb= 5.1L, Fb=80.4.

Massive 5.2mm Xmax !

Amazing drivers PRO 5FE100, PRO 5FE120. Response to 7K@-10dB, but lower F response in the vicinity of the 65/70Hz@-3dB. Real sensitivity (not the spec sheet stated 88 dB/W) about 86.7 dB/2.83V/m or final 85.0 dB/W/m (2Pi).

 

[zerokelvin99]

Yes, seem good. 5FE120 just edges the 100 with LF extension, using a tweeter @ 3k so HF is OK. However, true Xmax (backcalculated) of both is 3.25mm.

Shame you can't get them in 4R easily, may have to reassess the amplifiers.

 

[zerokelvin99]

Little update on project.. Three 5Fe120 can fit in box perfectly with space taken away for other parts (7.8L). Total sensitivity is at 91dB, with Q=1.2 tuning at 78Hz. (Creates 2.65dB boost at 134Hz.)

Each driver is 8R, power per driver 30W. This gives max SPL at 110dB (1m). Perceived flat outdoors to 100Hz, but drivers will be accommodating (mech. headroom) to 5dB wide Q boost @ 80Hz. 40Hz HP filter is required.

Tweeters chosen for project are Vifa BC25SC-06/04 , high sensitivity (91.5db ea) but low on headroom (power per driver 15W). Xover at 3K.


Lots of numbers here, have spent a long time optimising and calculating, please correct me if anything seems off! Or any better alternatives..

-
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Cone area & sensitivity is king! (And 120WRMS power.. )

 

[zerokelvin99]

Looking forwards to getting out of sim-land and hearing this wee beasty for the first time !!

Also need to work out some PLLXOs .. Not looking forwards to that