Is it a good idea to try a pro high db woofer and a compression tweeters for a high sens. 2 way?
I have always thought of this but wonder if anyone has tried it
I have always thought of this but wonder if anyone has tried it
Choose the right drivers and it can be brilliant. High efficiency and low distortion even at serious SPLs
My thoughts are a top end jbl comp tweeter and a emenence 10 or 12
Tune the box to 60 hz or so
Iam building 300b mono blocks that make about 5 watts so that is why the high db drivers
Tune the box to 60 hz or so
Iam building 300b mono blocks that make about 5 watts so that is why the high db drivers
I loved my 101 db 1w1m Peavey SP2-XT. Could actually sound like a piano, +-3 db 50-17 khz. Great room coverage. I used them at 1/4 W base level, 70 W peak (classical) in my music room. Although they could put out 126 db in a bar I only drove them hard in the front yard on 4th of July.
The burglar loved them too, carried them off 9/20.
I'm looking at building really ugly replacements, no flea market value. Peavey 22XT horns plus Eminence 15". Deltapro15 if sealed box, or Kappapro15 with a vent. Have the 22XT horns already, come up frequently on ebay used. Both drivers ~100 db rated. I want to hear real 54 hz, octave 2 of the piano or 16' pipes of an organ.
I want them to weigh <40 lb even if I have to separate tweeter & woofer. I'm too old to be lifting 90 lb on top of a speaker pole.
Unfortunately hexcell plastic is $2400 a sheet. Today looking at sheet aluminum on steel frame with foam+styrene liner. Have a 10 cu ft welded steel frame.
The burglar loved them too, carried them off 9/20.
I'm looking at building really ugly replacements, no flea market value. Peavey 22XT horns plus Eminence 15". Deltapro15 if sealed box, or Kappapro15 with a vent. Have the 22XT horns already, come up frequently on ebay used. Both drivers ~100 db rated. I want to hear real 54 hz, octave 2 of the piano or 16' pipes of an organ.
I want them to weigh <40 lb even if I have to separate tweeter & woofer. I'm too old to be lifting 90 lb on top of a speaker pole.
Unfortunately hexcell plastic is $2400 a sheet. Today looking at sheet aluminum on steel frame with foam+styrene liner. Have a 10 cu ft welded steel frame.
I think a good question is; what are the advantages of a low sensitivity system...from what I’ve learned, sound quality ain’t one of them! XD
you most often get wider bandwidth in a smaller box, both very good points for many. but they will most likely not be very good playing loud. i think it all comes down to pick the right sytem for your needs and not so much believe one concept fits all
the long answer: Cost
A somewhat longer answer: High efficiency drivers / PA drivers tend not to be suited to small enclosures especially if you want a low F3. Driven by high BL and stiffer suspension. What you will not see is a 15 litre PA box with a PA driver delivering 30-40Hz F3.
A somewhat longer answer: High efficiency drivers / PA drivers tend not to be suited to small enclosures especially if you want a low F3. Driven by high BL and stiffer suspension. What you will not see is a 15 litre PA box with a PA driver delivering 30-40Hz F3.
Pro drivers is usable foshizzle. Personally it’s the only option to get what I want, it gives that live concert sound and great dynamic range even at low volumes. I can live with the somewhat bumpy response and I’m sure it’s also possible to eq that flat too. Controlled spread is another bonus but horn artifacts may be irritating for some. Just try if you have the space and a spous that allow ugly things in your house. Slim low sensitive system have only one purpose = waf.
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Thank you guys for your thoughts
I have a room for listening so no concern for my wife to dislike the look
I plan on maybe even open baffle but not sure . I will need to model the woofer I pick and see.
My first goal would be a floor standing speaker with some good size. Some big manly boxes seem to bouncing around my mind.
It is possible to get a 15 in a 2 way or is a 12 better ?
I think the 15 just for the scale will look right or maybe 2 x 12's
I have a room for listening so no concern for my wife to dislike the look
I plan on maybe even open baffle but not sure . I will need to model the woofer I pick and see.
My first goal would be a floor standing speaker with some good size. Some big manly boxes seem to bouncing around my mind.
It is possible to get a 15 in a 2 way or is a 12 better ?
I think the 15 just for the scale will look right or maybe 2 x 12's
try a pleated horn for he tweeter. The beyma TPL150 is awesome in all regards.
I have a system with 18 inch subs, JBL2132 10" mids and TPL150 highs.
Hugely efficient. Low distortion. Huge dynamics. Indestructible in a domestic setting, even by me.
I have a system with 18 inch subs, JBL2132 10" mids and TPL150 highs.
Hugely efficient. Low distortion. Huge dynamics. Indestructible in a domestic setting, even by me.
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If the Axi2050 didn’t impress me the Beyma Tpl150 was next on the list to try...unfortunately cd+horn done right is pretty amazing lol
I audited the Peavey SP5 before I bought the SP2-XT. Had a 22 XT horn and a 12" woofer. Were short on low octave bass, at 1 W. Beethoven Appassionata was missing something. Maybe more engineering could have got their response down to 54 hz, but SP5 didn't do the job. 15" woofer SP2-g did.
I have a cluttered music room which doesn't have opportunity for standing waves with overstuffed couch & chair, carpet, two tall record racks & a CD rack,, a piano & a organ, 2 organ speakers. Highs & mids projecting down from 6 to 10' at narrow end worked well for that. Speakers on poles. With a 2 way, up to 2 khz comes down from the 15" driver. There is a lot of stereo information coming 1 - 2 khz. So having the woofers up head height was useful. My proposed build will cross at 1200 hz, same as SP2-XT.
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You can however get 50Hz out of 17L with B&C 8FG51 or 32Hz out of a very reasonable (in my view) 60L with a BMS 12S330.
Both sensibly priced at £75 and £150 including VAT.
Not the most efficient at around 90dB/1W but can low distortion and can take some punishment.
I see you call the 10s mids. Are they all called mids and not woofers?
Looking at that beyma tpl150 wow that looks right on. 700 to 23000 hz.
So is that why people cross them at 1200 to 1800 hz
Am I right that a 15 will work in a 2 way as some are rated to 2000 hz
But crossing at that low is that hard on the tweeter?
Oh forgot to mention I have a 15 sub I rebuilt to a more excursion and a dual 4 ohm 4" coil with a plate amp to drive it
I really don't care if the 2 ways make bass . Cross low to the sub in 70 or 80 hz
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If you have a sub why not build something Klipsch Heresy inspired 12”+horn 50l 98dB/w lots of fun.
I suspect you didn't simulate a 60L enclosure tuned to 27Hz as suggested by BMS for the 12S330. With that box the SPL is around 86dB between 30 and 50Hz, and then rises gently up to 90dB at around 200Hz. So this box is only good for a sub use. If you need to use it as a woofer up to the low 100s Hz, you need a fairly smaller box tuned higher as suggested by the TS parameters (e.g. 20L 40Hz), to retain a more flatter FR.
The problem is that bass extension, high sensitivity, and small volume, are all related parameters, and you can only have 2 of them at the same time, and not all 3.
What almost all PA mfg do is to design drivers with high sensitivity and small volume requirement. And Hi-Fi mfg tend to design drivers with bass extension in mind, and in order to not need huge enclosures, they are somewhat limited in sensitivity.
Ralf
The SP2-XT were crossed at 1200 hz, and were 1994 build. They got 12 hours a day use since I quit working in 2008, and the tweeters were fine in 2020 when stolen.
Earlier versions of SP2 were crossed @ 800hz. 2" diameter tweeter driver, not 1". Not common since 4" Altec Lansing VOT horn tweeter.
I don't need 17 khz to 20 khz, I can't hear it since ROTC camp 1969. My ears hear nothing but tinitus above 14 khz. Most US males are worse.