Hi -
I am going to update a 3 way system that I built back in 1980. It has an 8" woofer replaced in 2005 due to the foam surround on the original cracking up. Woofer is Dayton RS225S-8. Box is ported for Qts=0.38 driver with fs=27Hz, and is cut over at 1Khz. Not sure of the brand for the mid - It has and fs of about 400Hz, is Ferrofluidic cooled, rolls off starting 5.5Khz. All I recall is that it cost ~ $60 at the time (most expensive part of the system) is stamped "made in Belgium" on it and has no name anywhere else. I originally built the system with a Moto Piezo horn (gasp!) hooked up with an Lpad and a series cap. I would like to update it with something that would have flatter freq response and better dispersion for <~$25 per tweet and was thinking of either:
Vifa 19mm D19TD-05 for about $17 or the Beston Ribbon Tweet RT001A for about $25. I would X over between 4-5Khz
Any advice??
I am going to update a 3 way system that I built back in 1980. It has an 8" woofer replaced in 2005 due to the foam surround on the original cracking up. Woofer is Dayton RS225S-8. Box is ported for Qts=0.38 driver with fs=27Hz, and is cut over at 1Khz. Not sure of the brand for the mid - It has and fs of about 400Hz, is Ferrofluidic cooled, rolls off starting 5.5Khz. All I recall is that it cost ~ $60 at the time (most expensive part of the system) is stamped "made in Belgium" on it and has no name anywhere else. I originally built the system with a Moto Piezo horn (gasp!) hooked up with an Lpad and a series cap. I would like to update it with something that would have flatter freq response and better dispersion for <~$25 per tweet and was thinking of either:
Vifa 19mm D19TD-05 for about $17 or the Beston Ribbon Tweet RT001A for about $25. I would X over between 4-5Khz
Any advice??
You either like the sound of Ribbons or you dont. If you havent heard them its a gamble. I personally really like the cheaper-end Fountek ribbons I have. Also a tweeteer filter at about 5k or so would suit the ribbon fine, if the order is high enough. Im not familiar with the Beston however, so im speaking generally.
At your price point, the Vifa DX25 is hard to beat and HD is excellent in your intended range with a 2nd order filter. It's quite sensitive some some padding will be required.....maybe.
Thanks for the advice Mayhem, I have been looking at both the DX25 and the XT25 for a 2 way that I am planning to build for my Daughter with a 6.5" woofer crossed over at 1.5-2Khz, but my thought was that with the mid and the higher crossover point in this 3 way system I should take advantage of the smallest driver or a ribbon for best angular dispersion. Vifa publishes the 30 and 60degree SPL plots for the D19 but I have not seen it for the XT or DX25 - I found some here: Vifa DX25, and based on a simple figure of merit: dB loss at 60deg at 10Khz (keep in mind I have 53 yr old ears - so I don't weight so heavily the merits of flat response to 30kHz😀) the D19 is down ~5dB, DX25 down ~10db and the XT 25 down 15dB. So - any reason to pick the DX25 over the D19 for this application? (Also - what is HD - harmonic distortion?)
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