8"+1" combo home use

[barackuda]

Hi all.
My Klipsch LaScala/Belle clone project has to wait (have a new job in NL/amsterdam, a lot of traveling and no space), but keeping in touch with greg (mid/high horn combo).
So I came up with an idea to build a small speaker using cheap pro drivers (higher efficiency) to drive them with some cheap tube amp.
Drivers used should be Beyma SM108, B&C DE10 (ME10 or XT120)
attached are sketch ups.

My Qs are:
-any good CNC wood cutting near Amsterdam? (considering I dont have to provide wood, just drawings)
-any good source for the drivers in Netherland?

also would like to hear your suggestions (critics welcome)

Danny

[barackuda]

nobody? ;(

[blue934]

sorry i can't be of help with this design but i hope you can make it work. i have been interested in building a hifi set with pro drivers to hear what they sound like but all the designs i see use 12 or 15" drivers and i don't want anything that big. your 8"+1" looks just right for me.
david

[Brett]

The SM108 is almost textbook for a B4 alignment: 11.3L net, f3=69Hz. You can work out the port.

ME10 works well with the DE25 for about a 2k xover, but unsure of the DE10. I also like the XT120.

You are still going to need to design a xver for it.

Re wood: do as I do and go to a kitchen maker with a large accurate table saw and get them to cut it. Usually doesn't cost much.

[barackuda]

brett thanks.Perhaps I can consider another 8" driver, because I have something like 25-27L net volume (driver, port, bracing already deducted).
Any suggestions? I'd like to get the driver down to cca 60Hz, at least, with some EQ, so the driver has to have a bigger xmax .
I've been considering a B&C 8NDL51,a little bit expensive for what i want, but good xmax.


david, my design goal is more like dynamics, and high power level.And portability I dont want a speaker that weights 150kg when I'm abroad. I want to use activ Xover.
danny

[sumacSK]

Ahoj

RCF L8S800 should by good.. http://www.prodance.cz/protokoly/RCF_L18S800.pdf
emi beta 8 is ok if you want to keep it cheap..
if you have 25L volume you can also consider 10"...

[barackuda]

nazdarek sumacSK

yes i want to keep it cheap, i have another ongoing project at home which is very expensive to me.10" is to big.
I dont know about the eminence beta8, but i like the idea of beyma sm108.

I've modeled it in WinISD with linkwitz transform circuit, and taken down to 50Hz in 23L closed box, it showed that i wont reach the Xmax. but perhaps i'm doing something wrong also the sensitivity was around 94dB ...
can somebody model this driver in a different program if he get the same? i'm little bit confused. anyway, i will be ordering the drivers after new year holiday.

danny

[CCU]

here's a good source for drivers and i THINK that they are from the Netherlands
EUROPE AUDIO - Home page

[Godzilla]

I like these two designs. Thanks for posting them to get our creative juices flowing. Can anyone comment on which sounds better in a simple two way like this, the Beta 8 or the Alpha 8 in a home stereo application. Is it possible to use these drivers without crossover and just blend an appropriate tweeter? They seem to roll off nicely on top.

TIA!
Godzilla

[barackuda]

Hi Godzilla!
I've actualy chosen the Beyma SM108.
But a lot of guys mentioning the Eminence drivers.Isn't the Beyma a class better?

danny