Toe Dipping With Pioneer Bu20

WORS

Member
2007-12-24 4:39 am
HOHOHO
I AM KEEN TO START ON A FULL RANGE ADVENTURE AND I HAVE TWO EMPTY LARGE MONITOR STYLE (23x14x12) CABS AND WAS HOPING YOU COULD HELP ME DECIDE WHAT TO DO. I PLAN TO SPEND NO MORE THAN $100 -THUS THE PIONEER BU20 IS THE DRIVER/S OF CHOICE. HERE ARE MY THREE QUESTIONS 1)CAN I PLACE TWO DRIVERS PER CAB? 2)HOW WOULD I WIRE THEM? 3)MUST I GO WITH A PIEZO AS WELL?
THE SPEAKERS WILL BE USED IN 30X20 ROOM ON EITHER SIDE OF A TV AND I CAN USE A 15"VELODYNE SUB IF YOU ADVISE SO.
THE AMP IS A NAD.
I JUST WANT TO HAVE A BIT OF FUN AND THE SATISFACTION OF DIY.
THANKS
MERRY X AND A HAPPY 08
 

BHD

diyAudio Member
2004-06-07 8:25 pm
Brooklyn Park, MN
1)CAN I PLACE TWO DRIVERS PER CAB?

You can, but I wouldn't.

2)HOW WOULD I WIRE THEM?

If I was going to use two per cab, I'd use them in bipole fashion (one on front and one on back) wired in parallel. But I suspect you're going to use them up against the wall flanking the TV, so...

3)MUST I GO WITH A PIEZO AS WELL?

No, especially if you go with one driver per cabinet. There's a great little tweeter that's dirt cheap that people have found works exceptionally well with the Pioneer.

THE SPEAKERS WILL BE USED IN 30X20 ROOM ON EITHER SIDE OF A TV AND I CAN USE A 15"VELODYNE SUB IF YOU ADVISE SO.

That's a big room, so you'll probably need it.

THE AMP IS A NAD.

The drivers are a little power hungry according to some, so you'll probably need that too.

I JUST WANT TO HAVE A BIT OF FUN AND THE SATISFACTION OF DIY.

Well, you'll probably have fun making them, but you may be a bit disappointed by the sound unless by sheer coincedence the dimensions of your cabinets are good for these particular drivers.

Good luck and welcome to the forums!

(P.S. It's considered really bad form to type in all caps - it reads like you're shouting at people.)

:)
 

WORS

Member
2007-12-24 4:39 am
BHD
Thank you for your reply. I have the fever for this full range thing. After searching late into the night I found the Eminence Beta 12 LTA driver and it seems my cabs would work with this driver. It is a little more $$$ but what the heck it's x-mas! I am dazed and confused to say the least.
Thanks again
Wors
 

BHD

diyAudio Member
2004-06-07 8:25 pm
Brooklyn Park, MN
Thank you for your reply. I have the fever for this full range thing. After searching late into the night I found the Eminence Beta 12 LTA driver and it seems my cabs would work with this driver. It is a little more $$$ but what the heck it's x-mas! I am dazed and confused to say the least.

I'd stick with the Pioneers and supertweeters if for no other reason than it stays within your budget and there will be lots of choices of cabinets to put them in, like the chang and BIB. I bet the combo will sound GREAT with an NAD amp.

:)
 

WORS

Member
2007-12-24 4:39 am
Thanks for helping out! BU20 it is and now the search starts for a tweeter.The dayton #275- 025 comes up in my searching as a better choice than the piezo. It is only rated for 10wrms which seems low as I fear after much beer it may get turned up!
 
That's what the crossover cap is for. It keeps the lower frequencies which are where most of the power goes from reaching the tweeter. Just look around. You won't see many tweeters that are rated for more than 10-20 watts. They don't need to be since it is assumed and basically required that they have a high pass crossover between them and the amp.

Anyway, the B20 in a sealed cab can sound great, and since you have a sub to work with already and cabinets you want to drop them into, its kind of a no brainer. Admittedly, I'm an open baffle guy (with my B20s, no less), but my living room rig is built with sealed enclosures because that's just the way things need to be, and the B20s lived there for awhile (replacing the 8" drivers in a set of large Yamaha bookshelves), and the sound quality (mated with B&G Neo3 PDR planar tweeters) was excellent. If you mod those piezos like Godzilla shows, they'll treat you right, too, and for alot less $$$ than the B&G units). If you're not up for that, there are a handful of tiny Dayton dome tweeters that some of us have been playing with here that mate with the B20 really nicely for around $5 each.

Have fun.

Kensai
 
teaser
 

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one thing to be cautious of....

the Pioneer is not shielded, so you MUST place the speakers at least 3 ft away from the television if a traditional CRT type. Not sure how the magnetic fields will affect LCD or plasma types. PLease use some prudence regarding this. I killed a nice CRT television because I placed some unshielded speakers too close to the tube (and I knew better but the magnets were particularly strong on these old vintage drivers).

If direct firing then another type of tweeter may be good for you, but if placed on the back of the enclosure for added "ambience" then maybe a waist.Also. Piezo don't need a Xover to work. As frequency rises impedance drops.


er Merry Christmas to all (or Happy Holidays if that suites you better)

stew
 
And what an unremitting tease you are ;)

They do look totally sweet, though. I sure hope you're putting them through their paces against the fancier drivers you have on hand.

And thanks for linking to that bit on piezo XOs again. I had actually been thinking about that the other day but couldn't remember exactly what it had said or where it was posted.

Kensai
 

WORS

Member
2007-12-24 4:39 am
Done as in decision made and order placed with P/Xpress. I have a agonizing week to wait for the goodies and will pimp the cabs so by next weekend they are g for go! I shall give you full report!
The guy at P/Xpress could not understand why I would want to xover a piezo. I read from the planet10 site (re;the piezo xover)and slayed the dude. He had never heard of such a thing.
You guys are good!
Later...