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SB Acoustics ARA upgraded crossover design measurements
SB Acoustics ARA upgraded crossover design measurements
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Old 13th April 2020, 04:31 PM   #1
flakkz is offline flakkz
diyAudio Member
Join Date: Jul 2010
Default SB Acoustics ARA upgraded crossover design measurements

Hello everyone,

Remembered I had an account here since 2010, making my debut post now. Better late than never.

I've been researching quite a lot and have decided to invest in the SB Acoustics ARA two-way speaker design. I've owned the Buchardt S300 and was looking to upgrade to the S400 but the ARA's seem like a really good middle-ground if not on par with the S400. Anyway, I've found kits from various sites, most offering the standard crossover from SB Acoustics. Some others also offer the same crossover with upgraded parts mostly from Mundorf for a smaller price increase which I'm considering.

However, one reseller also offers a complete new crossover-design while also doing driver matching and assembly. I have no problem doing the assembly myself but this custom crossover is only offered when letting them doing the assembly. I've recieved several measurements from them which seem very good and proffessional, but since I'm no expert at reading measurements I thought I'd post them here and see if I can get some guidance in which option to go for. I work in sales myself and even though they are swearing by their upgrade I would like a second opinion.

The attached pictures and explanations are from their support/sales
/customer service. The original ARA is named "ORIGINAL" and the rest are measurements with their crossover, I hope my naming of the files and explanation of the graphs below is enough.

ORIGINAL: ARA on tweeter axis: green is frequency response and blue is min.phase

1: ARA Beryllium/SoftDome - Green/Red - they have same woofer's response, the difference is the tweeter response and off-axis response

2: Frequency (Green) and Phase (blue)

3: Tweeter axis, complex summ of gated far field, nearfield and port response

4: ARA SoftDome Off-axis: Green/Red/Ornage 0/30/45grad Horizontal, Blue/Light Blue +15/30Grad Vertical

Now for the million dollar question, add 400 Euros and get the new designed crossover or save some money and get the original, with or without upgraded components?

Thanks in advance!
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