I see it the same way but for most modern tweeters the power handling isn't much of an issue anymore and if the spl requirements are that low, we have to accept it's not to your or mine liking but that's what's the issue at hand is. I mean, I'd build my speaker differently but that doesn't mean my personal preferences apply to the thread starter, no matter how much arguments I have regarding that. (And @wfr329, there's nothing wrong with what you want or expect, that's completely reasonable)
I do too, I see it the same way, having to deal with PA speakers regularily, repair them, recone or develop them for a very narrow profile to match which none on the market match. Nonetheless, all what you've said is 100% true but not 100% relevant for the speakers he wants.
Let's see how he refines what kind of speaker he wants/needs and how that can be realized the best way possible.
Although it is a bit on the spendy side, the SB Satori TW29TXN-B is a 4 Ohm tweeter that is 96 dB/2.83V sensitivity. The 8 Ohm version TW29TXN-B-8 is 93 dB sensitivity.
Well, the 96dB are on 2,83V, which is 2W on 4 Ohm. On 15k and 30° off axis it drops to 90dB. Regarding the energy bilance in the room, you are still limited to ~91-92dB. The 2W do not matter much because of the very low spl requirements though but you should be aware of the power issue (half the impedance equals double the power). That might be a good solution for the bass driver selection, as long as the mid driver also matches that level. Thanks for the suggestion esp. because that tweeter got a very extended fr and also a very low fs which makes it very likely possible to cross it over very low. It's very expensive but promises equally high quality and properties, especially excellent impedance control and probably almost resonance free.
Dear Walter,
You are correct that a bigger driver will do a better job in the deep bass eg. <60Hz. Particularly if people are debating a 12” woofer vs an 8” woofer. An 18” vs 12” etc.
Between similar sizes it gets closer, and sometimes depends on the particular model. Even a Purifi (or Scan-Speak) 10” may perform better (or compete) with other 12” woofers
The “science based guys” like to understand why they’ve found that a pair of slightly smaller drivers may be sound cleaner or louder to a single slightly larger one.
I’ve attempted to show this by computer based simulation that’s based on physics and math calculations, but unfortunately these multi-graphs can be too much to handle.
I am guilty of this as I didn’t provide commentary to the graphs.
But I can recommend a 3 way with a pair of 8” Dayton Audio RS225-8 per 80-100L cabinet. Especially with the deep bass tuning (that results in an F10 of 20Hz) that resulted in deep but tight tuneful bass that that stopped on a dime.
And that room in post #38 was 63^2 with 3.2m ceilings.
You’re in for a treat with the Anthology II, if you decide to go that way.
OTOH If you decide on a single 10”, the other option is the 3 way variant for Jeff Bagy’s Kairos (6.5” midwoofer) or Continuum (5” midrange)
Morning,
about post no.64,
I was measuring output levels from my newly built Halcyons at various frequencies, for 50 Hz and lower i perceive very little even if the output level is very good on the level meter. I guess low frequencies help imaging and overall presentation.
Maybe I should look for very good woofers in the 60 Hz and upper frequencies !!
Walter
about post no.64,
I was measuring output levels from my newly built Halcyons at various frequencies, for 50 Hz and lower i perceive very little even if the output level is very good on the level meter. I guess low frequencies help imaging and overall presentation.
Maybe I should look for very good woofers in the 60 Hz and upper frequencies !!
Walter
