Designer:
bwguyer
Project Category:
Tower Speakers
Project Level:
Advanced
Project Time:
20+ Hours
Project Cost:
$100 – $500
Project Description:
Balanced and accurate 3way for medium to large rooms
Design Goals:
Balance, balance, balance
Don’t break the bank
Good in medium to large rooms
OK for critical listening but has to project well for walking around —
” This is the reason why midrange is at ear level for seated listening, this way the tweeter is up high enough to be appreciated for every day activity. Measured for seated posibion, ears for final tweeks.”
Clean vocals, clean vocals, clean vocals
Good with most types of music
Bi ampable for the purpose of marketability, possible bi amping 
As attractive as time permits since I’m not smart enough to make a living at it
Driver Selection:
Dayton Audio RS225P-4 8″ Reference Paper Woofer 4 Ohm
295-377
Dayton Audio RS150-8 6″ Reference Woofer
295-354
Peerless DA25BG08-06 1″ Aluminum Dome Tweeter 6 Ohm
264-1460
Enclosure Design:
Separate 1 f^3 ported chamber tuned @ 49 HZ
Separate sealed chamber @ .1 f^3
Horizontal bracing minumum 5″
Enclosure Assembly:
MDF with a mixture of poly and later cotton for damping
3″ pvc for ports
Tnuts for woofers
Crossover Design:
3 way
4th order low pass @ 310
3rd order bandpass @ 310 & 1500 with countour filter
2nd order high pass @ 1500
2.75 DB attenuation on tweeter
Tips & Tricks:
No real tricks.
Just sound bracing, separate chambers, contour filter for slight tilt — measure, listen, measure, listen.
Adjust where required/desired
Conclusion:
The speaker ended up the best sound I think I could summon from the drivers.
The speakers sound very good, my reference is Paradigm Studio 5 version 6 with much better vocal presentation.
The response curve is very flat with exception of an intentionally upward tilted curve toward the bassline — total of about 4DB at the bottom end
The speaker is very good with most music and even plays ok with rock although some comes across a little harsh @ seated lever
About the Designer:
By trade a UNIX specialist but I’ve always been passionate about music reproduction (audiofool) and always been a DIY guy. Marry these attributes and you get a speaker builder/designer.
I’ve build before but am going to build till I get the perfect sound (just kidding, no such thing.) But I’ll keep trying for perfect sounds for the right applications.
This is the most detail I’ve put into a build thus far and hope to only get better with time.
Project Parts List:
|
Part # |
Description |
Qty |
|
295-377 |
Dayton Audio RS225P-4 8″ Reference Paper Woofer 4 Ohm |
1 |
|
295-354 |
Dayton Audio RS150-8 6″ Reference Woofer |
1 |
|
264-1460 |
Peerless DA25BG08-06 1″ Aluminum Dome Tweeter 6 Ohm |
1 |