Best Tweeter UNDER $30, 3way, under 3k XO?

[Ron_E]

I've built 2 sets of speakers using the SB19ST and they were both for Iron Driver contests. The first pair in 2015 used the SB19ST as the iron driver and the second pair were built in 2018 and I used the tweeter because of it's low cost and the budget limits for the Iron Driver contest. In 2015 I came in a very close second and in 2018 I came in 1st.

https://techtalk.parts-express.com/forum/tech-talk-forum/66558-the-champs-id-2015-2nd-place-speakers

Ron

[a4eaudio]

Thanks for that link!

[Ron_E]

Do either of you recall what the lowest xo frequency could have been with the SB19ST? I know the FS is 980Hz and the rule-of-thumb would be about 2Khz, but I also know that the rule-of-thumb fails in many cases...just because it "can" xo that low doesn't mean it will sound okay doing so.

I crossed it at 3Khz so I don't really know how low it will go. I asked Google and came up with this. https://techtalk.parts-express.com/f...-c000-4-tested The FR curves look very similar to what I measured and and distortion looks good above 1500Hz.

Ron

[a4eaudio]

The SB19ST-C000-4 has excellent off axis response and goes for $24. I used it in my 2018 Iron Driver contest entry and came in first. The data sheet is attached.

Ron

Another vote for SB19ST. I use it in a tiny 2way with Purifi PTT4.0X…

Do either of you recall what the lowest xo frequency could have been with the SB19ST? I know the FS is 980Hz and the rule-of-thumb would be about 2Khz, but I also know that the rule-of-thumb fails in many cases...just because it "can" xo that low doesn't mean it will sound okay doing so.

[Ron_E]

Thanks Ron, that one got past me somehow. Very intriguing. I see you used 42db/8va slope @ 3kHz from your build thread post.
I'm not sure I'd want to invest in the components for the mid to make the XO point, but I'm still really intrigued. As you said, the off-axis is very impressive.

Thanks, I'll dig into this one more this weekend!

The crossover I used was essentially a pair of notch filters. It used 4 components per filter plus any padding resistors. I believe parts costs for drivers and crossover parts were under $225 for the pair of speakers which were basically 2-ways with integrated bandpass woofer. So cost wouldn't necessarily a road block. It's very hard to design the filters without a crossover optimizer and not every driver will work.

Ron

[scottq]

If reproducibility is not a concern, the DX25BG60 for $26 in Wisconsin cannot be beat. Legend has it that Peerless is headed out of the DIY market, however.

It will cross at 1500 all day, sounds just fine, and has build quality that would shame some $100 tweeters out there. Cannot go wrong with it.

Hey Johnny, yes, this one on sale, in particular is very tempting. It's a top contender.

[scottq]

The SB19ST-C000-4 has excellent off axis response and goes for $24. I used it in my 2018 Iron Driver contest entry and came in first. The data sheet is attached.

Ron

Thanks Ron, that one got past me somehow. Very intriguing. I see you used 42db/8va slope @ 3kHz from your build thread post.
I'm not sure I'd want to invest in the components for the mid to make the XO point, but I'm still really intrigued. As you said, the off-axis is very impressive.

Thanks, I'll dig into this one more this weekend!

[Blenton]

Another vote for the large frame DX25; either the cast face or polymer face will work. I likes them. I likes them a lot.

[johnnyrichards]

If reproducibility is not a concern, the DX25BG60 for $26 in Wisconsin cannot be beat. Legend has it that Peerless is headed out of the DIY market, however.

It will cross at 1500 all day, sounds just fine, and has build quality that would shame some $100 tweeters out there. Cannot go wrong with it.

[tktran]

Another vote for SB19ST.

I use it in a tiny 2way with Purifi PTT4.0X…

[Ron_E]

The SB19ST-C000-4 has excellent off axis response and goes for $24. I used it in my 2018 Iron Driver contest entry and came in first. The data sheet is attached.

Ron

[chrisn]

That SB tweeter looks interesting, is it new? I've used and like DX25, as well as the not readily available Peerless DA25BG08-06. the Dayton TD25f-4 is well under $30

https://www.parts-express.com/Dayton-Audio-TD25F-4-1-Soft-Dome-Tweeter-4-Ohm-275-022?quantity=1

​

[scottq]

https://www.digikey.com/en/products/...C56-06/6557409

Nice, thanks! Back in the running

[Thezeek]

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[PWR RYD]

I would use the Peerless DX25BG60-04 which is on sale in Madison Wisconsin. The SB26STCN is a very nice sounding tweeter but exceeds your $30 budget.