Pearless, Sea or Vifa ???

[REALFLEO]

Hi all,

I'm asking your help to choose 6.5" or 17" driver. I prefer a paper cone and the best sensitivity for the price. I'm looking around 70$CAN.

What is the Nomex cone from Pearless. Is it as good as paper ?

I used specs from
http://www.solen.ca/
to compare the drivers

So are my choices:

Pearless
Nomex cone
N164WR3308 63$CAN

Paper cone
S164WR2608 26$CAN Why so cheap ?

Sea paper cone
CB17RCY/P08 63$CAN

Vifa paper cone
PL18WO0908 84$CAN

If you have any experience working with these drivers ...

Thanks,

FLEO

[moray james]

You can not beat the price or build, would work well open baffle, $13 and change CND.


http://www.mach5audio.com/product_in...4eeb788dd9d5b3

[sdclc126]

Moray - Excuse me for butting in here - I'm very interested in the Mach 5 midwoofers - I already own their MAW 10 subs - have you actually done a build with the 6.5s, and/or tested them? Would love to see some measurements, but a subjective evaluation will do in a pinch. Thanks.

REALFLEO - just a friendly FYI - it's spelled "Peerless", as in having no peers - pearless means you're hungry for fruit and can't find any. And it's not Sea - it's SEAS - and I believe that one's just pronounced as the individual letters. As for trying to decide between a 6.5" woofer and a 17" - I'm sure you meant 7".

Typos happen.

Oh yeah and "pealess" means you're hungry for veg - oh never mind you get the picture...

Good thing you didn't type "peeless."

[moray james]

I don't have any hands on experience with this driver. Given the price and what I have read about it how can you loose? These prices will not last as they have to be a loss leader to break into the market. The T/S data would indicate aok use OB though the efficiency is a tad low but it is ok especially if you triamp. Regards.

[opnly bafld]

Originally posted by sdclc126
As for trying to decide between a 6.5" woofer and a 17" - I'm sure you meant 7".

Maybe 17cm?

[REALFLEO]

yeah sorry about that it is 17cm so 7" ... my bad

I wrote it late yesterday ...

moray james: Wich driver are you talking about ?

Do you trust the Seas ?

Thanks,

REALFLEO

[moray james]

try clicking on the link. If it does not work for you Google Mach 5 Audio and look at their 6.5 inch bass/mid. Regarding SEAS no issues with them they make fine drivers. Regards Moray James.

[REALFLEO]

Ok so I read a bit more and I don't really understand SEAS response graph:
http://madisound.com/pdf/seas/h571.pdf

It's not really flat ... Am I wrong

compare to Vifa PL18WO0908
http://www.tymphany.com/datasheet/printview.php?id=126

--------------------------------------------------------

What do you think of the
Peerless S164WR2608
http://www.d-s-t.com/link/peerless/data/830657.htm

combine with SEAS EXCEL T25CF001
http://www.seas.no/PDF%20data%20exce...6/T25CF001.pdf

The thing is the Vifa and SEAS drivers may be a bit too expensive for me. So I would probably go for the S164WR2608 with a second order x-over.

Thanks,

REALFLEO

[v-bro]

Hi Realfleo,

I have quite a lot of experience with different vifa, seas and peerless units, but sadly not with these.. As far as I can judge from the specs I'd say the more expensive ones have a stronger "motor" and will behave best in a BR design. The Mach 5 has the weakest motor (Qts=0.8) and will behave best in a closed, TL or OB. The vifa and peerless paper cone are most universal (Qts 0.34 and 0.50) closed, BR will work and for the peerless OB or TL might also work.

I wouldn't worry to much about the response of the seas driver, the graph is a bit misleading and this driver can deliver under 500 hz very well in the right enclosure...

The peerless paper cone does show a slight peak in it's upper region, but it might be filtered out adequately with a 2nd order x-over. I think the paper cone version is that cheap because it didn't need new technology, the nomex cone will probably not sound almost three times as good. But note that the driver also uses a larger voice coil and much lower Qts, it will probably be capable of producing "dryer" bass.

Don't forget any tweeter attenuation (if you even want it) the tweeter is slightly more sensitive than most bass-mid drivers you opted.

If you want to save go for the peerless paper cone, you'll end up with fine quality for the price. If you want to know which I would choose disregarding the price, it's the vifa.

Hope I've been of some help..

[REALFLEO]

v-bro,

Thanks for the anwser.

What do you think about SEAS's Qts ? It has a Qts of 0.27. Is it too low ? I have not seen so mutch diy project using the SEAS H571. Do you know good quality loudspeakers using this driver ? Are you sure the response will be as flat as the Peerless ?

I'm attracted to the SEAS driver because of his 91dB SPL too. That means I won't have use too mutch tweeter attenuation ... What do you think ?

Vifa is too expensive and his SPL maybe too low, so it's between the Peerless and SEAS

Sorry for all these questions ;-)

REALFLEO