Is it possible to cover the whole spectrum, high SPL, low distortion with a 2-way?

[Ro808]

Charles,

I agree, this almost has to be a Beyma (cone).
12 cone ribs, triple roll surround, same dustcap including glue edge, same distance from dustcap to first rib.

FWIW:

Linear elongation of the membrane X max: ± 9.00 mm

Value of the database, X max PP: 18.00 mm (2 * X max).

 

[phase_accurate]

I know that there is a value of +-9mm in the data-sheet. But the voice-coil overhang is just 10mm in total. Beyma applies a generous percentage of the plate-thickness to that for the calculation of x-max. That might be good for a pure PA sub usage but used as a midwoofer in home listening I definitley regard them as +-5 mm x-max capable drivers.

Regards

Charles

 

[Bas Horneman]

but it's good especially at the current sale price

Where can you buy they them for that price in Europe? A quick google and I found only the AK version.

 

[Ro808]

I know that there is a value of +-9mm in the data-sheet. But the voice-coil overhang is just 10mm in total. Beyma applies a generous percentage of the plate-thickness to that for the calculation of x-max. That might be good for a pure PA sub usage but used as a midwoofer in home listening I definitley regard them as +-5 mm x-max capable drivers.

Regards

Charles

True!

 

[Ro808]

Where can you buy they them for that price in Europe? A quick google and I found only the AK version.

Here. You need an account and you receive a discount if you order more pieces.

 

[Ro808]

But don't try this

 

[Bas Horneman]

But don't try this

Thanks...saw your earlier post. Got the STH-100

Here. You need an account and you receive a discount if you order more pieces.

Thanks very much. I have an account there already...so cool.

 

[Bas Horneman]

Bummer. Ordered and paid. Got refunded. Prices are up. Looks like it was a mistake on their website.

 

[daemonsgr]

The 15P80Nd is a very nice driver, but also quite expensive.
In my country (and for HiFi applications), I would buy a pair of 15FH500s instead of one 15P80Nd and still have some money left over.

I guess the Beyma would crush the old 2226H though.

Your are correct about the price (probably diminishing return) but I dont have the wife acceptance for two 16ohm woofers (for 8 parallel your were probably referring to).

 

[Ro808]

I was referring to a pair for two 2-ways
2 x 8 ohm in parallel would be perfect for a MEH (> future project).

 

[Ro808]

Bummer. Ordered and paid. Got refunded. Prices are up. Looks like it was a mistake on their website.

Too bad.
Prices presumably applied to drivers in stock.
I believe the French guy bought a pair at the low price.

 

[daemonsgr]

I was referring to a pair for two 2-ways
2 x 8 ohm in parallel would be perfect for a MEH (> future project).

The woofer you said is 16ohm I think. Maybe I misread! (That is way I said 16 and 16 in parallel) ill check.

 

[Ro808]

I accidentally referred to the 16 ohm version, not intentionally.

 

[docali]

What is missing for me is the Siemens Eurodyn which is a classic 2-way speaker system to cover the whole spectrum.

 

[Ro808]

Agreed, but the standard Eurodyn doesn't do much below 50Hz.

 

[daemonsgr]

I accidentally referred to the 16 ohm version, not intentionally.

Following the route of Faital vs the world...
DE250 vs a good Faital? (1in)

 

[Ro808]

This or this.

16 Ohm version of the HF109 looks very good too.

 

[Ro808]

Impression of prototype 2-way with Fatial Pro HF108R - 16 ohms mounted to LTH102 & Faital Pro 12PR320 - 8 ohms.

1 kHz is a critical XO point for a 1" driver. The Beyma CP380M takes it easily, even crossed slightly lower.
Other 1" drivers, like the BMS I have, don't sound so good around 1 Khz.
For 900Hz and below, I would always use a larger diaphram (>1.75").
Much depends on the horn though > in general, a bigger horn facilitates a lower xo point.

 

[Brett]

got some bad comments for the 2226h I had as a first choice

What? It's a great driver (I've actually owned heaps of them).

I guess the Beyma would crush the old 2226H though.

Do you have some actual evidence that it's a substantially better driver?

 

[phase_accurate]

I have never heard a 15p80nd but I guess it will have a cleaner (in terms of breakup modes) midrange and better extension at its upper end due to the curvilinear cone. The efficiency is also a little higher. But that comes at the cost of low-end extension.

The 2226 is still a very well engineered driver with its shorting rings etc. I have two of these and I must say that the manufacturing quality is very high (so is the quality of my Beyma Woofers BTW). At the lower end it will most likely outperform a 15p80nd.

In terms of sheer low end power there will be a lot of drivers form Southern Europe that will beat a 2226. But that is most probably not very relevant for home-use - or is it ? If you compare datasheets you have to keep in mind that a lot a driver manufacturers measure distortion at one watt. JBL measures THD at 10% of its nominal power (at least for the 2226). A lot of drivers have THD levels at 1 Watt in the same order of magnitude than the 2226 at 60 Watts which speaks for the linearity of its motor.

Regards

Charles