Real World Measurments of classic Speaker-Designs

[16062024]

Hey there,

I am currently learning Akabak and my method for now is to rebuild existing designs in fusion 360 and simulate them with Akabak, then comparing them with real world measurements.

While this worked out pretty good with the HD15 and the Invader-Bin, I would love to find more actionable, reasonable data to compare them with my simulations.

Maby someone here build a speaker with an accessable plan and has some measurments?
Or maby you have a thread in mind in the internet like this one: https://forum.speakerplans.com/hd15-measurements_topic105533.html ?

Cheers,
C

 

[staticV3]

Have you gone through the Spinorama database already? https://www.spinorama.org/

Various anechoic measurements of classic speakers can be found there.

 

[16062024]

Wow! This site is awesome. Thank you. Will definetly mark this one!

Thing is, sadly there are no plans available of any of those commercial speakers. So I cant rebuild an sim them

 

[mhardy6647]

Which existing commercial loudspeakers do you wish to build clones of, @16062024?

I'd say it matters quite a bit.
A whole generation of very popular and profitable acoustic suspension designs were nothing but boxes (typically made of particle board) containing a more-or-less generic woofer (amenable to sealed box airspring loading) and a more or less appropriate tweeter. Crossovers were often extremely simple first or second order. If you want to rebuild any of those -- you won't need much in the way of plans, just some dimensions.

On the other hand, many such loudspeakers were produced in copious quantities as well. No need to clone, say, an EPI 100, a KLH Six, an "Original Large Advent -- or a (bass reflex loaded) JBL L-100, for that matter.

What's your endgame (i.e., goal)?

Oh, another thought, albeit somewhat tangential -- there have been numerous loudspeaker designs (more or less successful) that were deliberately designed to work with normal domestic spaces. I reckon that such loudspeakers would fare quite poorly indeed when measured under anechoic (or quasi-anechoic) conditions. Seminal examples include, of course, almost all of Bose's 'classic' direct-reflecting loudspeakers, and Roy Allison's redoubtable Allison One, Two, Three (etc.) models.

source: https://www.classicspeakerpages.net...ies_brochure_2/allison_one_series_brochure_2/

 

[16062024]

Which existing commercial loudspeakers do you wish to build clones of, @16062024?

It doesnt matter, as long as there is a plan with all the dimensions needed to build / design the speaker in fusion.
I dont want to build any real copies of those. Its really just to get a sense for the simulations in Akabak. To gather informations and routine in designing and simulating Speaker Enclosures in Akabak.
What I would love to get from someone would be SPL over Frequency Graphs from famous DIY Designs like Scoops, MT102, Labsub and stuff.

What's your endgame (i.e., goal)?

To be able to have enough experience to say if my data that akabak gives me is valid or not. If this will be the case I just want to design horn-speakers myself.

 

[mhardy6647]