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Multi-Way Conventional loudspeakers with crossovers

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Old 4th October 2012, 08:49 PM   #21
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Hi,

2 x Quality 3 Way Crossover Filters for Speakers 400W | eBay

Not a good idea. Its too simplistic. Wrong x/o points for the drivers.

2x KEVLAR LOUD SPEAKER CONE 6.5" 16cm 250W MAX 8 OHMS HIFI WOOFER 902.423 | eBay

Not a good idea. Substantial for the price but not much else.
The quality of the drivers (skylab) is an unknown quantity.

Peerless SKO130 5" Bass/Mid KEF B110 alternative | eBay

Reasonable, but using two 4ohm mids is not a good
idea due to several reasons, not least of all expense.

Peerless DT-105 / LR10DT 25mm dome tweeters PAIR | eBay

Decent tweeters.

Overall the original 6.5" 2 way you posted will work a lot better than the
above, which will requires zobelling and L-pads to be added to stand
a chance of working well, and even then the x/o points are all wrong
for the above drivers.

There is also a 8" 2way :
Speaker kit 3 : Peerless SKO204 + DT105 + crossovers ! | eBay

Click the image to open in full size.

Another very good value kit.

Bass driver specs :

Impedance: 8 ohms
Sensitivity: 92db
DC res (Re): 6.1 ohms
Power: 70 watts nominal
Resonance (Fs): 40hz
Frequency range 38-5000hz
Compliance (Cms): 0.78 m/N
Moving mass (Mms): 17.8 g
Qms: 4.23
Qes: 0.47
Qts: 0.43
Vas: 58.2 litres
Force factor: (Bl) 8.11
Baffle cutout: 186mm diameter
Chassis diameter: 224mm

That is probably your best bet. A 40L box tuned to 35Hz should work
very well. Something like the Audionote AN-E box (its rear ported) :

Click the image to open in full size.

If that is too big go with the 6.5" kit. 20L tuned to 40Hz is good.

rgds, sreten.
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There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

Last edited by sreten; 4th October 2012 at 09:01 PM.
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Old 5th October 2012, 04:18 PM   #22
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Join Date: Oct 2012
Sreten thanks for your reply , but as they say fools rush in .
ive ordered the speakers but changed the cross over to this one
ebay 230781332299
hoping to more closely match xover , the 2x mids to connect in series for 8 ohm,
had to order speakers now to get the mdr free and get cut to match speaker requirements,
I thought i could house drives now with rough xover and make xover later
I have sound meter , hoping I could signal gen from pc would that work ?

Last edited by marka101; 5th October 2012 at 04:33 PM. Reason: accuracy
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Old 6th October 2012, 11:18 AM   #23
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

To put it bluntly your going to end up with something that sounds
like garbage compared to building the good value 8"/1" 2 way.

Well, there are two ways of learning and you've chosen
what I consider the initially very frustrating approach.

I wonder how you have arrived at the speaker boxes for this ?

rgds, sreten.

Pair of Quality 3 Way Crossover 400w RMS 8 Ohm Speakers | eBay

The previous choice is far better value for cannibalising components.
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When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
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