With AlNiCo Tannoys (up to HPD) the tweeter coil is 1/4 wavelength behind the woofer coil.
When taking account of xover phase shifts the output is in phase at xover frequency.
It is slightly different for their ferrite drivers as their magnet is not quite as deep.
When taking account of xover phase shifts the output is in phase at xover frequency.
It is slightly different for their ferrite drivers as their magnet is not quite as deep.
Well. Coaxial driver it's the right choice for this moment. I have a tight budget....And very little time available. So any corners that i cut are welcomed.
I don't want to make another thread so...let's focus on the available coaxial drivers.
I have seen this for o long time ago. I like the fact that the HF horn is large!(comparing it with other coaxial drivers)
http://www.p-audio.co.uk/pdf/SN8_250CX.pdf
Eminence is the first on the list...it's cheap and i can get it right away.
I don't want to make another thread so...let's focus on the available coaxial drivers.
I have seen this for o long time ago. I like the fact that the HF horn is large!(comparing it with other coaxial drivers)
http://www.p-audio.co.uk/pdf/SN8_250CX.pdf
Eminence is the first on the list...it's cheap and i can get it right away.
Co-axial is not a popular solution. Expense and compromises usually send customers away to non-coaxial solutions.
And that is where it matters most. But then why might it be different at say 500Hz or 3k?
several other brands now have those smaller PA coaxials
you have to face the fact that fore the midrange driver, when playing any kind of bass/lows the sensitivity goes down a lot
and if it really does have high sensitivity, its only capeable of midrange duty
these limitattions are 'generally speaking' more or less valid fore almost any kind of driver, to some extent
and maybe worth to remind that when you approach the limits of your drivers, everything gets more tricky, and difficult
I dont know what we are having this discussion at all , if Geddes says his speakers are the best just use the tweeter with the waveguide 😀
The eminence is as shown in the spec a perfect performing driver very nice flat response, and what is remarkable good is the LF extension. I would not know a better one, despite it is very cheep.
beyma 12"
http://profesional.beyma.com/ingles/pdf/12CXA400Nd.pdf
http://profesional.beyma.com/ingles/pdf/12KX.pdf
http://profesional.beyma.com/ingles/pdf/12XA30Nd.pdf
Ciare 12"
http://www.ciare.com/pdf/catalogo/PX322.PDF
RCF 12"
RCF - CX12N251
RCF - CX12N351
B&C 12"
http://www.bcspeakers.com/CPD/product_pdf.php?id=0000000078
http://www.bcspeakers.com/CPD/product_pdf.php?id=0000000167
18sound 12"
12CX800 - High Output Coaxial Ferrite Transducer
fatialpro 8"
FaitalPRO - Professional Loudspeakers Made in Italy
BMSPRO 12"
http://bmsspeakers.com/index.php?id=bms_12c262
http://bmsspeakers.com/index.php?id=bms_12c362
http://bmsspeakers.com/index.php?id=bms_12cn680
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I disagree 😉 and it's on a 45cm waveguide. BTW, I normally run it closer to 1kHz, also first order.
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I don't know.
At 600Hz the DE250 response is 18dB down and its resonance appears to be 900Hz.
I'd be worried myself and would not trust my ears in a case like this.
If it were my driver I'd be looking to cross it at 2k with 24dB slopes but that's just me.
At 600Hz the DE250 response is 18dB down and its resonance appears to be 900Hz.
I'd be worried myself and would not trust my ears in a case like this.
If it were my driver I'd be looking to cross it at 2k with 24dB slopes but that's just me.
The crossover was not exerting a great influence on the rolloff and I don't believe it is ideal in that configuration for a number of reasons, just not the obvious ones.
Well I would guess looking at that drivers response the crossovers influence was next to zero.
That's what would worry me. ;-)
That's what would worry me. ;-)
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