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I havea custom made cabinets with 15" eminence woofers and EV 1823 driver horn loaded midranges. The original Ev horn tweeters are gone and seem pricy to me for their rep. I tried a 89db rated dome tweeter, and it is very rolled off. I have a single foster horn tweeter that is much brighter, so i am assuming this is a efficiency issue. Any suggestion on replacement tweeters in the $50 or less price range? The opening in the baffle is 2.25 x 6". Thanks.
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
Edits: 04/16/15Follow Ups:
I like the Fostex as well, but find the T-90 a bit shrill. T-925 or T-900 preferably, Or T-500 if you are feeling flush. ;-)
nt
all the best,
mrh
Vintage fiber cone tweeters. Wonderful tone. Maybe a tad loud but easily fixed by lowering the mid and treble on my preamp a notch. Maybe he'll trade me for something...i doubt the fosters coming from ebay will be as nice.
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
With my Altec Duplexes. First order XO, very high (like 10k Hz high) -- and an L-pad to, well, you know, pad it to just the right amount of sparkle. Best I've done to date to extend the HF of a pair of 604Es unobjectionably (is that a word? The spell-check doesn't think so)
... oh, and boutique, audiophile clip leads, too... of course ;-)
all the best,
mrh
What model are those? I use the T-900 which I really like!
I'm listening to: Holland by The Beach Boys
Thetubeguy1954 (Tom Scata)
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns --- High Sensitivity Speakers
Do not walk! Do whatever you can to replace the L-pad with decent resistors ASAP!
They suck!
I tend to move a little slow...
I am not unhappy with what I am hearing, so I am not in a huge hurry (even though my plan has long been to do just that).
Fortunately I think the system's rescued by synergy between the cheap L-pad and the audiophile clipleads.
;-)
all the best,
mrh
Technically that is a variable L-pad and if you replace that with resistors you have a fixed L-pad.
It is called an L pad because the two resistors needed form an L shaped circuit around the driver. There are also T pads, C pads, H, Pi and Box pads, all named after the shape the form in the circuit diagram. They are all types of attenuating or filtering circuits which keep the impedance as seen by the amp the same.
Interesting, I did not know that and assumed it meant loudness. Anyway, i assume you guys don't use tone controls?
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
My speakers are active and I just use the gain controls on the crossover or the amps so no need for pads or tone controls.
...use a Fostex L-Pad! IMO better than the cheap ones, but composite(resistors) are best
. The "decision maker" for me was convenience in exchange for sacrificing a little sparkle. There are some recordings or music genre where I want to have the HF a bit hotter than what my current adjustment have, and it will be difficult switching discrete resistors for that every time I want to adjust it.So I choose the L-Pad from Fostex.
Edits: 04/20/15 04/20/15 04/20/15
IS it this one? They're the same bad sounding devices as the 8.00 jobs but at 4 times the price. If so, get rid of it now.
I spend over a year wrangling with my tweeters and once the L-Pad was replaced with resistors the sound was greatly improved.
Knowing what sensitivity rating you're interested in and whether you meant $50 for the pair of tweeters or $50 each would be a big help my friend...
But as a suggestion: here's a pair of Pioneer Bullet tweeters that might just fit the bill of working with those with 15" eminence woofers and EV 1823 driver horn loaded midranges you're speaking about! Best part is these Pioneer CS-77 tweeters are only $14.95 right now!
Thetubeguy1954 (Tom Scata)
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns --- High Sensitivity Speakers
Thanks for the tip. The sensitivity of the midrange is over 100db from what I have gathered here. Also, yes, I meant 50 for the pair, I know that is kinda low these days. I picked these up recently on e bay, they haven't arrived yet. Fingers crossed!
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
I use Foster 025N03 horns on top of 811B/808-8A.
They look similar to your horns.
I crossover 1st order at 13K cycles.
With active EQ, they go out to -3dB @ 17K cycles in room at my listening position.
Plenty of top end and these were not expensive, about $30 off ebay.
nt
X
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
I looked up your EV 1823 midrange, but the sensitivity rating is not to modern standards (58db?). I would suggest the Eminence APT series of tweeters which are good quality and well within your price range. You might be able to use the horn that is on the EV tweeters that you are replacing. If not, the Apt drivers will take any standard 1" screw on horn, so you should be able to find a replacement horn that fits your cabinet cutout. You could also wire in an L-pad and adjust the level on the APT tweeter or even the Foster tweeter that you now have to match the EV mid and woofer. My 2 cents.
1mW at 30, add 49.2dB to get 1W/1M.
I saw that 56 db stat as well and it did not make sense. I would say these are in the 90's db range. Since I posted, I bought a pair of 1" fosters with 4x7 horns for 30 dollars. I suspect I will pad them down or put in an in line cap as fosters are typically super efficient.
"When the demon is at your door, in the mornin' it won't be there no more"
Steely Dan
EV used the old method of 1mW at 30 ft.
Sanman
The 58 dB spec was likely the old RETMA spec which was derived differently form the modern 1 Watt @ 1 Meter spec. The 1823 should be about 105 dB. The 1823 had a copper voice coil, while the 1823M had an aluminum voice coil so it went higher. Finding a tweeter which will go low enough to mate well with the 1823 for under $50 is a tall order. It should be interesting to see the suggestions offered here. Expect the sensitivity specs among lower priced horn tweeters to be inconsistent and frequently wildly optimistic.
Paul
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