New to the forum and doing a search didn't answer my question so I'll try here.
I have had a tri amp system for many years now and am now running out of amps, I started with a Crown D300 and two D150's and over the years have had to replace the D300, and one of the D150's and now have two D150's and a Parasound amp.
The Parasound is going and one of the D150's distorts when used for any length of time.
At 65, tinnitus has taken enough of my hearing that I just want to convert the speakers to single amp and save the cost of getting the amps repaired, the Crowns are probably over thirty years old and I'm not sure the cost to repair then would be worth it.
So...what I'm looking for is a crossover to use just the one amp.
Speakers are rated for:
Tweeter 1,600 to 20,000 hz
Mid 62 to 5,500 hz
Woofer 20 to 1000 hz
My knowledge of crossover designs is very limited, so if someone could suggest a kit or completed unit I'd appreciate it.
TIA
Al
I have had a tri amp system for many years now and am now running out of amps, I started with a Crown D300 and two D150's and over the years have had to replace the D300, and one of the D150's and now have two D150's and a Parasound amp.
The Parasound is going and one of the D150's distorts when used for any length of time.
At 65, tinnitus has taken enough of my hearing that I just want to convert the speakers to single amp and save the cost of getting the amps repaired, the Crowns are probably over thirty years old and I'm not sure the cost to repair then would be worth it.
So...what I'm looking for is a crossover to use just the one amp.
Speakers are rated for:
Tweeter 1,600 to 20,000 hz
Mid 62 to 5,500 hz
Woofer 20 to 1000 hz
My knowledge of crossover designs is very limited, so if someone could suggest a kit or completed unit I'd appreciate it.
TIA
Al
Consider purchasing one or more home theater amps from Emotiva, The Outlaws or similar, one or two of these will provide all of the amplification you need and should last quite a while. No amplifier is going to last forever without service.
Designing a ground up passive XO for your existing system is going to be a major design task if it is possible at all.
Designing a ground up passive XO for your existing system is going to be a major design task if it is possible at all.
Speakers are rated for:
Tweeter 1,600 to 20,000 hz
Mid 62 to 5,500 hz
Woofer 20 to 1000 hz
Peerless 850488 HDS 5.25" Mid/Woofer
Peerless 850488 Hds 5-1/4" Woofer 297-642
Morel tweeter.
Morel MDT-30S 1-1/8" Soft Dome Tweeter 277-015
DAYTON ST385-8 15" SERIES II WOOFER
Woofers in the Speaker Components Department at Parts Express | 15
Enclosure specs
Vb = 4.7 cu.ft.
Fb = 21Hz
F3 = 26.5Hz
Vent:
Diameter = 3"
Length = 7"
Internal Dimensions:
18"W x 30"H x 16"D
External Dimensions:
19.5"W x 31.5"D x 17.5"D
Hope this helps.
While I would like to replace/repair the amps, it seems electronics is short lived in my garage/shop.
Between chemicals, sawdust, heat/cold and such, it all seems to play havoc on them.
Al
Maybe at a younger age when I was more apt to build multiple kits, but not now or for the garage, just a couple 3 way crossovers is all I need, thanks though.
I should be able to build the crossovers, but I can't design them.
Either a DIY kit or premade will work.
Al
Like I mentioned, my knowledge on XO design is very limited, very limited.
I was looking more for a kit or manufactured XO versus actually designing one.
Thanks anyway though.
Al
If you call Madisound, they will design a custom crossover and even build it for you.
But if you wanted to get a tiny taste of DIY (and take advantage of the perfectly matched ~90dB/W sensitivities of mid-woofer and tweeter and the mid-woofer's nice top end roll-off), we could put a capacitor in front of that tweeter and make a simple first order (6dB/oct) xo.
Network Circuits
So with your 8 Ohm tweeter and aiming for about a 5-6kHz high pass, I would start with a 2uF film cap and experiment with values around 1.6-2.2uF....
But if you wanted to get a tiny taste of DIY (and take advantage of the perfectly matched ~90dB/W sensitivities of mid-woofer and tweeter and the mid-woofer's nice top end roll-off), we could put a capacitor in front of that tweeter and make a simple first order (6dB/oct) xo.
Network Circuits
So with your 8 Ohm tweeter and aiming for about a 5-6kHz high pass, I would start with a 2uF film cap and experiment with values around 1.6-2.2uF....
Ok, that I might be able to do, cap in front of tweeter in series then?
I just look for a 2uF flim cap then??
Nothing it sounds like for the mid woofer and low woofer then?
er...I see you mentioned the original XO for the woofer.
Thanks much.
Al
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If you choose carefully from the current selection of cheap film caps from Apex Jr, with f.ex. 0.22uF, 1.5uF, and 2.0uF, you can make 1.5uF, 1.72uF, 2.0uF, and 2.22uF. Give those combos a listen, and adjust to taste.
If you're in the US, I will even send you some Mylar 0.22uF, 0.42, 1.0, and 2.2 for nothing...
If you're in the US, I will even send you some Mylar 0.22uF, 0.42, 1.0, and 2.2 for nothing...
Attachments
AndrewT's paranoia knows no bounds, bless his tiny heart! He'll be relieved to know the tweeter is wound with fuse wire that will protect the cap...
Thanks, I live in Minnesota.
Free is always nice, but I don't mind paying for them.
I'll PM you my address, once again, thanks.
Al
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