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lets say I use the cheap and limited but loud Selenium D250 Trio on a 511 horn - maybe a Peavey RX14 or ASD1001 for a tweeter rolling in around 3KHz. My single 12" midbass horn seems close to 105dB 2.83v 1M 2pi. What tweeter horn is appropriate ? CD waveguide ? - more traditional horn ? - if latter, what might work that's cheap and available ? this is going to be a mono rig
Karlson Evangelist
Follow Ups:
Friends don't let friends use 511s (especially below, say, 800-900 Hz) -- there are too many other options (even inexpensive ones) that are widely felt to sound (much) better ;-)
511 fans are few and far between. Did you see the little chat below on sort of this topic (see link below)?
all the best,
mrh
Hi mhardy6647,
I'm just curious if you'd tell me what horn and driver (makes & models) are in the photo you posted? Also how far back do you have to sit from them?
Thanks...
I'm listening to: Sophie Milman by Make Someone Happy
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
On loan from a generous local (Northern New England) hifi guru :-)I am having a little challenge integrating them with the woofer sections of the 604Es (the 2" JBL drivers, on these horns, are, not surprisingly, considerably more sensitive!) but it doesn't stop me from foolin' around with them.
I may go the simple, inelegantly "nuclear" route of just padding the compression drivers down with adjustable 16 ohm variable L-pads as an interim 'solution'
Edits: 11/03/16
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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
511 despite being a cowbell, is a squeaky clean horn at 500Hz - probably cleaner than a short horn such as SM120.
I have Emilar horn or horns (one missing in mess or shed) - one next to me has no markings but looks identical to your "EH-500" one sidewall rough w. pock-marks - mouth is ~5.75" x 15.5" - has a 908-8B - (I might have a 175 in good shape - ?)
497Hz sine - over 100dB with cheap Selenium D250-Trio
Karlson Evangelist
I have a pair and played with them (crossed over much higher -- used the ML XO). They sounded nice and BIG, I'll say that for them (with 802D drivers installed).
Jury's still out on the Community horns/ JBL 5441s. Largely for lack of a block of time to really listen to 'em.
Also, right now, I am running them off the ML XOs as well, -- because I am profoundly lazy. I do want to try them with the JBL N600 (600 Hz) XOs that I just happen to have.
PS the Emilar photo I posted ain't mine :-P I do have an identical Emilar horn, though, on loan from Mr. Roberts. Gotta try that out one of these days, too. Nothin' wrong with mono...
all the best,
mrh
I've used 511 in La Scala type setups with K55V til one of my cat's pulled an amp's input an fried the amp, K55 and APT150 - they were good for AC/DC - maybe not something "delicate"
here'a a cute cartoon FOR CAT LOVERS
Karlson Evangelist
I used 511's with 802D's crossed at 500 (bi-amped) for many years. They compared very favorably with live symphony events playing the same piece. I used a tweeter above 8k to help with the rolled off highs. I think the 511 is still one of the better 500Hz horns available. I have tried a handful of others since, but none beat the 511. I did apply auto undercoating to the outside of mine to reduce ringing. Worked very well. They had to sit in the garage for a month for the smell to go away, though.
I've had good luck with these, and cheap.
I assume since its so small that it doesn't need any CD-EQ (?)
Karlson Evangelist
The price IS right on those, that's fo' sho'.
all the best,
mrh
IMHO, 400Hz is a little low to run a 511, considering it has a 500Hz cutoff.
Also, if you use an 802 driver, a tweeter is not needed.
I think its workable with the cheap Selenium D250-Trio - its a bit stronger (but not as extended on the top) than my old SA-HF
Karlson Evangelist
I find a tweeter is still needed with the 802. They were designed to roll off at around 8k, the upper limit of the optical soundtrack on film.
The old spec sheet for 802 says it goes up to 20kHz. It does not say how many dB down it is at 20kHz.
With EQ, I get plenty of "air" and no tweets.
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