Dreydels vs CJD vs C-killa...?

[AudioSQ]

Initially I was going to build knock down kits for the Overnight Sensation MTM's because they're cheap and easy. I lack money and time (let's blame the 3 kids 5 and under) and it seemed like a good option. I worried if I built them I would not really be satisfied (are we ever?) and then end up building what I really wanted to build anyways, which would cost me more time and money. I'd also have to find a way to convince the wife to start over. None of which sounds appealing to me. If you can talk me into staying with OSMTM great, but what I would prefer to do is build something with an RS150 (still need to go small here for SAF) and a tweeter either the RS28 or its close relative the Seas 27. I've narrowed it down to a few designs, but obviously feel free to make suggestions. It will eventually be paired with a sub. I don't want to spend more than 200, so obviously I'm already way over budget.. but only my wife cares about that Anything over $300 and I'll probably be in deep doodoo.

• Dreydels...How can you go wrong with JeffB?
• CJD's version of the MT with these drivers... what's the difference between his and Jeff's?
• Parts Express actually has a kit for this, which would help save some time for xover build, but is their's better than the above 2? Probably not, and they cost more.
• C-Killas... which drop down the cost on the tweeter, but I have a big tweeter fear because years ago I had some B&W's, I don't remember which ones, they were on the lower end. I was never happy with the tweeter so now I fear going cheaper here, but I'd love conversation over it vs's the twitters mentioned above.

Thanks for any help fellas!

Bruce

[2leftthumbs]

A few years ago I built a pair for my sister using this design: http://www.htguide.com/forum/attachm...achmentid=5087 in a vented box. (by mudjock about 1/2 way down the page.) They sounded quite good both to me and to her.

[2leftthumbs]

There's also this one http://sites.google.com/site/undefin...irlfromipanema.

[joeybutts]

C-killa's are a nice little loudspeaker. I built a modified version for my father's 4.1 and they sound quite nice.

[andykriech]

I built the Encore's for my brother in a tower configuration (same volume and tuning as original design) and the C-Killas for my sister. They are both really nice sounding speakers. I think you would be happy with either, but I give the tweeter edge to the RS28.

HTH, Andy.

[LouC]

Kinda depends on your priorities. I love the ND28 but it's not going to give you the ultimate sizzle of the RS series (you'll pay a bit more for that last 5%). I think it's a major step up from many of the cheaper tweeters. It's very "Morel" sounding (looks like a Morel.) I have no qualms about it's build quality or robustness.

I've done three sets of C-Killas and never had a complaint. Honest bass into the 50's from a fairly small box. They are voiced on the warm/neutral side.

Can't comment on the other designs, I have not heard them.

[donradick]

Kinda depends on your priorities. I love the ND28 but it's not going to give you the ultimate sizzle of the RS series (you'll pay a bit more for that last 5%). I think it's a major step up from many of the cheaper tweeters. It's very "Morel" sounding (looks like a Morel.) I have no qualms about it's build quality or robustness.

Thread hijack!

I hadn't heard that description before - how would characterize the ND28 versus the cheap Vifa tweeters - BC25xx and NE19. I typically like Morels a lot. PM me if you'd rather....

[AudioSQ]

I love a good hijacking of my threads. Especially on the topic of tweeters. I'd be interested in thoughts on those as well.

As far as the actual topic I feel pretty sure I'll build the Dreydels. They were originally designed with the Seas tweeter, but I've seen a little chatter in my searches with it and the RS28a. Is there any advantage to the RS tweeter? or was that mostly because people like to order from one place or already had some on hand?

[Pete Schumacher ®]

I love a good hijacking of my threads. Especially on the topic of tweeters. I'd be interested in thoughts on those as well.

As far as the actual topic I feel pretty sure I'll build the Dreydels. They were originally designed with the Seas tweeter, but I've seen a little chatter in my searches with it and the RS28a. Is there any advantage to the RS tweeter? or was that mostly because people like to order from one place or already had some on hand?

It does simplify things by getting it all from PE.

Not sure you'd really notice the difference in presentation, but the Dayton tweeter is just plain nicer, aesthetically. The built in screen to protect the dome, the aluminum face plate, the advanced motor, all tilt to the Dayton's favor, at least in my book.

[AudioSQ]

It does simplify things by getting it all from PE.

Not sure you'd really notice the difference in presentation, but the Dayton tweeter is just plain nicer, aesthetically. The built in screen to protect the dome, the aluminum face plate, the advanced motor, all tilt to the Dayton's favor, at least in my book.

Since you mention the built in screen to protect the dome.. with three small children that might be reason enough to use it over the Seas.

[AudioSQ]

Alright, so here's the parts list I came up with for the Seas version. I downloaded some zip file for the RS28a version, but the files only open in gedit (Linux notepad) and I can't figure out how to figure what I need as far as cross over parts from it (they list a bit weird). I assume I may need JeffB's program, but I'm on Linux and I doubt it works with LibreOffice. Anyways if anybody knows where to point me to for the xover parts for the rs28a or could tell me which of the below to change I'd appreciate it:

2.0 mH Air Core 18ga
.35 mH
15 uF

4.7 uF
6.0 Ohm
.60 mH
10 Ohm

Thanks!

Bruce

[Pete Schumacher ®]

Alright, so here's the parts list I came up with for the Seas version. I downloaded some zip file for the RS28a version, but the files only open in gedit (Linux notepad) and I can't figure out how to figure what I need as far as cross over parts from it (they list a bit weird). I assume I may need JeffB's program, but I'm on Linux and I doubt it works with LibreOffice. Anyways if anybody knows where to point me to for the xover parts for the rs28a or could tell me which of the below to change I'd appreciate it:

2.0 mH Air Core 18ga
.35 mH
15 uF

4.7 uF
6.0 Ohm
.60 mH
10 Ohm

Thanks!

Bruce

I've got the schematic at home. But I do believe the woofer XO is the same in both versions, and the RS28 needs one extra capacitor.

I can respond later if Jeff doesn't happen to respond before then.

[Pete Schumacher ®]

OK, Dreydel with RS28A

RS150-8:

2mH .6 Ohm
12uF
.25mH .2 Ohm

RS28A:

4.7uF
.45mH .2 Ohm
25uF

Then, in series with the tweeter, a parallel network of 1.5uF and 5.5 Ohm.

[rmeinke]

Late to the party I know, but Jeff B's Piccolo is an outstanding mini monitor that performs very well considering its price. SB products, like Dayton RS series outperform for their price.

Jeff did a bang up job on that design. Outstanding integration and the bass for such a small speaker is really impressive.

Another very nice Bagby design!!! Hats off Jeff!!!

[AudioSQ]

OK, Dreydel with RS28A

RS150-8:

2mH .6 Ohm
12uF
.25mH .2 Ohm

RS28A:

4.7uF
.45mH .2 Ohm
25uF

Then, in series with the tweeter, a parallel network of 1.5uF and 5.5 Ohm.

Anywhere I can find a schematic or picture? I aint too bright and like perdy pictures.

[Pete Schumacher ®]

[AudioSQ]

My Hero! Thanks!

Bruce

[ernperkins]

Pete -

A long while ago I downloaded Jeff's PCD project for the RS28A Dreydels. I notice that your list has slightly different xover values for a few items (e.g. I have 2.2 uF and 6 Ohms for the parallel RC contour while you have 1.5 uF and 5.5 Ohms). Is your version a later development?

Thanks,
Ed

OK, Dreydel with RS28A

RS150-8:

2mH .6 Ohm
12uF
.25mH .2 Ohm

RS28A:

4.7uF
.45mH .2 Ohm
25uF

Then, in series with the tweeter, a parallel network of 1.5uF and 5.5 Ohm.

[donparsons]

I made the Dreydel's in the pe cherry cabinets for my sister for Xmas several years ago. Talk to your wife, unless you are a cabinet maker by trade she will prefer you spend a few more $'s and end up with a beautiful and great sounding speaker WITH grills. I have fooled my wife into believing that grills are evil. I love the look of the drivers.

[Pete Schumacher ®]

Pete -

A long while ago I downloaded Jeff's PCD project for the RS28A Dreydels. I notice that your list has slightly different xover values for a few items (e.g. I have 2.2 uF and 6 Ohms for the parallel RC contour while you have 1.5 uF and 5.5 Ohms). Is your version a later development?

Thanks,
Ed

It would be real hard to hear a difference between the two.