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Celestion 15" to AE TD15M

post #1 of 24
Thread Starter 
I recently did a cheap thrill build. Wondering if there is a crossover design out there that will work for swapping out the Celestion 15" for a AE TD15M-8, and replacing the the DNA-350 with the 360. Cabinet is sealed. Is it nuts to want to do this?

I pretty much drive by the AE facility on my way to and from my office, so it just seems like I should . . .
post #2 of 24
What are you hoping to gain?
post #3 of 24
Thread Starter 
Quote:
Originally Posted by Erich H View Post

What are you hoping to gain?

That is an excellent question. I am not dissatisfied with the Celestion at all. I think more than anything I would like to hear a speaker that cost roughly 6X as much; has to sound better, doesn't it? However, if the difference is only audible at reference levels then maybe not.
post #4 of 24
You might be surprised how little difference the 6x in price will make. I'm not knocking AE, I use the TD15M in my mains. The Celestion was an absolute steal at $50.
post #5 of 24
If you do indeed end up buying the TD15's for replacing the Celestion woofers, then I would be happy to buy the Celestion woofers from you, should you decide to sell them! If so, keep me in mind and send me a PM!
post #6 of 24
"I recently did a cheap thrill build. Wondering if there is a crossover design out there that will work for swapping out the Celestion 15" for a AE TD15M-8, and replacing the the DNA-350 with the 360. Cabinet is sealed. Is it nuts to want to do this?"

i'm pretty sure that there is a td15m/dna360 crossover floating around. the size of the cab and whether or not they are ported shouldn't matter as I don't believe baffle step correction is built in, but I don't remember where the plan is.
post #7 of 24
post #8 of 24
Thread Starter 
Broke out some Sonny Landreth including a duet with Joe Satriani today. The Celestion/SEOS combination is pretty sweet. After reading the original bwaslo design thread at DIYSoundgroup I am guessing I probably don't really need the upgrade to the TD15M; since I don't listen to anything much louder than about 75-80dB. Bwaslo's comments suggest that the benefits of the AE didn't become evident till much louder.

If I am not careful I am going to end up with a garage full of speakers and parts . . . eek.gif
post #9 of 24
Quote:
Originally Posted by Willie View Post

Broke out some Sonny Landreth including a duet with Joe Satriani today. The Celestion/SEOS combination is pretty sweet. After reading the original bwaslo design thread at DIYSoundgroup I am guessing I probably don't really need the upgrade to the TD15M; since I don't listen to anything much louder than about 75-80dB. Bwaslo's comments suggest that the benefits of the AE didn't become evident till much louder.

If I am not careful I am going to end up with a garage full of speakers and parts . . . eek.gif

It happens much easier than one would think.smile.gif
post #10 of 24
When bwaslo compared the AE15M to the Celestion 15" was the incorrect polarity issue evident and taken into account at the time? If it wasn't then the SQ comparison should be repeated with the polarity problem corrected.
Edited by rajacat - 10/5/13 at 12:19pm
post #11 of 24
Thread Starter 
Quote:
Originally Posted by rajacat View Post

When bwaslo compared the AE15M to the Celestion 15" was the incorrect polarity issue evident and taken into account at the time? If it wasn't then the SQ comparison should be repeated with the polarity problem corrected.

I don't know the answer to that. I will say I am still vacillating on whether or not to try the TD15M/DNA-360/SEOS-12 combo in my cheap thrill cabinets.

Matt G.; if your reading this I am looking forward to you posting the upgraded crossover parts for the TD15/SEOS-12/DNA-12 in the thread at DIYSoundgroup. After I see the parts list I will most likely make the switch. (Unless someone talks me down).

Thanks,
post #12 of 24
"After I see the parts list I will most likely make the switch. (Unless someone talks me down)."

from what I've seen so far, matt's new crossover looks to be bees knees.

for folks who haven't seen it, go here: http://www.avsforum.com/t/1457166/s-e-o-s-r-mega-build/1110#post_23796258

then go buy a set. :-) (not sure what nominal impedance is on that one...4 or 8)
post #13 of 24
Quote:
Originally Posted by Willie View Post

I don't know the answer to that. I will say I am still vacillating on whether or not to try the TD15M/DNA-360/SEOS-12 combo in my cheap thrill cabinets.

Matt G.; if your reading this I am looking forward to you posting the upgraded crossover parts for the TD15/SEOS-12/DNA-12 in the thread at DIYSoundgroup. After I see the parts list I will most likely make the switch. (Unless someone talks me down).

Thanks,

I will pm you the parts list and schematic this evening. It's about a hundred bucks per unit.
post #14 of 24
Scratch that pm, here it is....


post #15 of 24
Thread Starter 
You guys rock!

Thanks!
post #16 of 24
that's a 4 ohm nominal speaker though, correct?
post #17 of 24
Yep

Willie, I'll have two of these up and running very soon (hopefully in the next week). While I don't have any time in front of the cheap thrill, I have plenty in front of the Sentinel, Tempest and some of the smaller ones. I'll give you my best subjective comparos as soon as I get them done.
post #18 of 24
It's a fairly easy 4 ohm load, iirc it stays above 5 ohms above 80hz so most amps or avrs will have no trouble driving it. I'll run an impeadance sweep tonight to double check that figure. I am also going to try and get crossovers worked up for both the 8 ohm td15m and bms 4550 (16 ohm) designs based off the current design so there should be quite a few options to choose from.
post #19 of 24
Thread Starter 
Currently I am driving LCR with a Denon 4311, 4 ohms will be fine.
post #20 of 24
The Celestion buy-out was a freak of nature woofer. Don't let it's low price worry you.
post #21 of 24
Thread Starter 
Quote:
Originally Posted by Erich H View Post

The Celestion buy-out was a freak of nature woofer. Don't let it's low price worry you.

The voice of reason crying from the wilderness.

In other words, if you want to spend 1200 bucks, spend it on something that will give you more return on your investment. Geez, when you put it that way . . .
post #22 of 24
"Currently I am driving LCR with a Denon 4311, 4 ohms will be fine."

i'm not concerned about the guys who know what they are doing...i'm concerned about the guy who reads how awesome the speakers are, builds a set, cooks his avr and starts thread: td15m/seos kit killed my avr!?! help?!? :-)
post #23 of 24
Here is the measured impedance for the new TD15M design, not quite as high as I first thought but most amps will still drive them with no trouble unless you like running them at high volumes for long periods of time in which case using an amp rated for 4 ohms would be the safest bet.

post #24 of 24
that looks quite amp friendly actually only a couple dips down to 4. i agree completely with your assessment.
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