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Multi-Way Conventional loudspeakers with crossovers

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Old 9th February 2005, 08:48 AM   #11
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Those do look nice, MethMan. Can you comment on how they sound?

I can't, simply because the overall sound is more dependent on box, chosen xo freq. and other drivers used in system. Misfortunatelly I'm not golden-eared boy to listen to only Bass driver itself and then be able to say "good bass, bad bass". 12B100/R never heard.
Personally, I'm summing in my head 3+1 active closed system with 12"+ 2*6" hardcone+1" harddome+ sub. Preliminary xo freq. 70-160-2700. 12BR70 in closed 50-60 lt. has -3dB at 70 Hz.
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Old 9th February 2005, 08:52 AM   #12
DonoMan is offline DonoMan  United States
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I can only find one place in the US for that $65 speaker and it's like double that price.
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Old 9th February 2005, 09:07 AM   #13
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Of course it is hard to reach SW freq. with light-coned pro drivers, especialy if they has "no" magnet and insufficient Xmax. 12BR70 is also not very suitable for SW. Better to choose some long-throw heavy coned, thus non-efficient driver with suitable powerful amp. Second possibility is use huge professional driver with a good Xmax in relatively big enclosure and use active EQ.
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Old 9th February 2005, 09:46 AM   #14
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I can only find one place in the US for that $65 speaker and it's like double that price

Sorry, can't help. Drivers are obviously cheaper in US than in Europe. Here they have 12BR70 in for 1600 - 1800 CZK. Divide it by 25. Toll and shipping are probably the difference.
But you have a numerous options to choose another. You are lucky boy. The offer in CZ is very narrow - Beyma, Seas, Monacor, Visaton or rubbish drivers from CZ, PL or from murky waters of FarEast Asia.

Prices are constructed like:
0.95 x (price in US + toll + shipping + tax) = price in CZ
price in CZ + (0-20)% = price in the rest of EU.
Some deviations sometimes occur.
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Old 9th February 2005, 10:52 AM   #15
DonoMan is offline DonoMan  United States
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Point taken about the sub. I'd like to have 8" or 10" woofers in the speakers if I don't end up with a MTM config...
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Old 9th February 2005, 11:15 AM   #16
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Eminence Delta LF or Kappa LF are used for cheap SW
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Old 9th February 2005, 06:24 PM   #17
DonoMan is offline DonoMan  United States
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Are there any midranges with 93-94dB that go up to 6kHz or more? I don't need it to go really low, but I do need it to go decently high.
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Old 9th February 2005, 07:18 PM   #18
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I started with the Adire HE12.1. I now use that woofer (in its enclosure) up to 500Hz. 500Hz to 3.5kHz is handled by an Audax PR170M0 on an open baffle. That's roughly 95dB-ish. 3.5kHz up is a Fountek JP-3.0 ribbon, which is also 95dB-ish.

It's more than $150 in drivers per side, but not a whole lot more. Let's see... the Audax midrange is $69, the Fountek ribbon was on sale when I bought it but now it's been replaced with a new driver, so that's about $80 now, I think I got mine for 65-ish. The Eminence woofer is $77. So that's below $250 per side, which is $200 over your budget for a pair. I've used less expensive tweeters, I still have a pair of Fostex FT17H horn tweeters that actually sounded pretty good. The ribbons are better, and they're more than 2x the cost. The Fostex tweeters would bring it a lot closer to your budget.

The PR170M0 starts to show breakup modes in its response at around 1.5kHz, but it sounds pretty good up a lot higher. I know people are using it up to 6kHz or more. I was too at one point, but right now I'm trying out the lower 3.5kHz crossover. Since you know what XO point you want, you probably have a tweeter picked out already?

The last pictures I took of my speakers:

Click the image to open in full size.

With the Fostex tweeter and the baffle I had back then:

Click the image to open in full size.
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Old 9th February 2005, 07:35 PM   #19
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I picked up this on Ebay: http://cgi.ebay.com/ws/eBayISAPI.dll...tem=3781733353

So I need a midrange that'll be good to 7-8kHz. The more the better, because I don't know how truthful that info is. (I don't have the graph - I figure that even if they suck, it's not a big loss, under $60 shipped for 2 planar tweets...)

So I'd like to throw an Alpha or Beta 10, (1 or 2) 4 to 6" midranges that'll cross high, and those tweets. If the tweets suck, I can always get better ones later.

Edit: I wonder if I'd be better off using 3 (!) 90dB midranges... with average sensitivity, 8kHz doesn't seem too uncommon.
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Old 9th February 2005, 08:06 PM   #20
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Hmm, on second thought, the Beta 10 is pretty weak in SPL < 1kHz, which is where I wanted it... Not good enough there...
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