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Avatar 3 way 15/6/tweet part 2

#421
BigGuns said:
I have the 4ohm version though.
Click to expand...

Even so, the crossover for a cab that can produce between 500-750w should be able to handle the power from a 500w head...At least I think it should.

And Sands is right...you should be able to figure out what they've used for component values and beef up the coils and capacitors.
 
#422
Post a pic of the crossover and someone can probably tell you what's up with it. It could just be cold solder joints, but it could also be one of the components is severely underspecced.

* The coils on Crossovers like this are often heavier than what you see in the MI industry, so people often don't secure them well enough. So bad solder joints + heat + stress = joints failing.
 
#423
Replacement xover
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Replacement xover
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Original xover
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Original xover
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Original xover. Don't think this side of it matters but couldn't hurt.
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#425
BigGuns said:
Wait a minute.....8ohm???? I definitely ordered a 4ohm and then specifically told them it was a 4ohm replacement. I just noticed the 8ohm stamp on there. Something I'm missing?
Click to expand...


That should be the lpad for the tweeter, right? if so, I don't think that's your problem. The bad news is that you can't tell what the values are on those coils, and that would be a very important part of things.
 
#426
Well it looks sturdy for sure. And the caps are 250v, which is a lot of juice.

Could those resistors be melting because they have no room to breathe are caked in glue? Can anyone see what part of the circuit the resistors are in, there?
 
#427
I spoke to Travis at Avatar and he's going to look up their records to make sure I did in fact get a 4ohm cab. Is there someplace else I can look to see which ohm I have? He also said they've switched over to an eminence crossover which is much better, and will be sending me one. So after that I should be good to go.
 
#429
Coils don't exactly look hirsute. Tiny for the job. And there's enough glue on there to double as roof insulation so heat is building up in caps and resistors - which are there expressly to convert sensitivity into heat. Even without the arctic insulation value, there really is not really enough resistor rating there for any cab that's actually getting asked to get driven hard.
 
#430
BigGuns said:
I spoke to Travis at Avatar and he's going to look up their records to make sure I did in fact get a 4ohm cab. Is there someplace else I can look to see which ohm I have? He also said they've switched over to an eminence crossover which is much better, and will be sending me one. So after that I should be good to go.
Click to expand...

Trevor at Avatar sent me the new upgraded Eminence crossover to replace my old problematic one.

So far it's been aces.

He was very responsive and I'm quite a happy camper now.

I'll say that Avatar has excellent customer service.
 
#431
greenboy said:
Coils don't exactly look hirsute. Tiny for the job. And there's enough glue on there to double as roof insulation so heat is building up in caps and resistors - which are there expressly to convert sensitivity into heat. Even without the arctic insulation value, there really is not really enough resistor rating there for any cab that's actually getting asked to get driven hard.
Click to expand...

I'm confused on the term "hirsute." I consulted dictionary.com and find that it means "hairy." :-)

When I receive the new Eminence crossover I'll post a pic, if that would be interesting to you guys.
 
#433
first, on post #413, looks like either BigGuns or HotelX's post shows to be mine in a quote; no biggee but not my words.

Second, I bought my new 4 ohm, 153 about June. At one gig I heard abit of distort/noise from this cab using my STM-900, just briefly but it was there.
After reading some posts in this thread of Xover issues I emailed Dave. He asked me to call Trevor to discuss this. Trevor said only a few cabs went out with obvious bad xovers in them. I PM'd with a TBer here who described a few issues with his cab that I'd not experienced anything close to. And I've used my cab after that with no "noise" issues again.

Trevor stated that the newer Xover would not add "any audible improvement to my cab" and that "at about $100.00 a pop, they are not looking to send these out to everyone if they're not having issues." I sent them pics of my xover, they confirmed I do have the older model in my cab. He asked that I use the cab some more and contact them if I did have any issues.

This past Friday I used my cab first time with F-1X pre/Crown Class D-XLS1500 amp; bridged @ 4 ohms for potential of 1500 watts or so. I wanted to push the cab to see if any issues arose, short of blowing it of course. So I was careful with my volume but still used more than ever before, I felt. Cab was solid not a stutter. Not sure the STM-900 maybe didn't just breakup some in the Foster tweeter last time I heard "noise", I dial tweeter down to 9:00 or less now always.

But I'm wondering if the new xover they now use is worth having for any added benefit to my cab? Not looking to score anything free from Avatar. I'd pay part or all cost for the new xover if its a benefit to have. Otherwise, I'll just use it as is and do something down the road, if needed, that might be an upgrade if that's even possible based on this cab's design. But so far so good with my TB153 cab. I'm a happy owner so far.
 
#436
Eminence crossover has arrived!

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Still a bit of hot glue on there, but looks a whole lot tidier than the Avatar crossover. Can someone clarify for me whether I got the 8ohm or 4ohm version? I've become a bit paranoid about it now. The front of the plate has a sticker that says 8ohm, but on the white thingy on the crossover i see the 4ohm symbol. (I have the 4ohm cab.) Can someone verify? Otherwise, what do those in the know think?
 
#437
BigGuns said:
Eminence crossover has arrived!

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Still a bit of hot glue on there, but looks a whole lot tidier than the Avatar crossover. Can someone clarify for me whether I got the 8ohm or 4ohm version? I've become a bit paranoid about it now. The front of the plate has a sticker that says 8ohm, but on the white thingy on the crossover i see the 4ohm symbol. (I have the 4ohm cab.) Can someone verify? Otherwise, what do those in the know think?
Click to expand...

There's no obvious way to judge the impedance that this crossover was designed for, but I can tell you that the 4ohm marking on that component is just the resistor's value, so don't let that bother you.
 
#438
The 10w resistor in there still makes me a little nervous, but I don't know exactly what role it plays in the xover. Especially since it's still caked in hot glue.

The caps at least have room to breathe now, as do the coils.


* It looks to me like (but I can't tell without looking at the back) that that resistor is part of the midrange circuit. If that's the case, and the frequency is ~800hz, I see some definite risk of burning that fella out again. The fEarful crossovers for similar power appear to be using 3 25w resistors in parallel in that "slot" in the crossover network. I'm thinking if you were to replace that resistor with two 25w 8 ohm resistors in parallel you'd be safer, but I'll let someone with a bloody clue what's going on vet that suggestion.
 
#439
I got the eminence crossover installed, and we had a gig on Thursday, so had a very good chance to test it out.

My first impression as I got set up was that the tweeter is now SUPER hissy. I turn it up to about a little under half, or maybe 1/3. I had wanted post a pic of my amps eq settings to make it clear, but haven't had a chance. On my GK MB500 I have the bass and low-mid eq boosted, a slight boost - around 1oclock on treble, and seriously cut high-mids. On my Warwick Thumb I have the bass eq just above noon and treble in the center with the exception of one slap song where I boost the treble a bit.

So overall, I was very pleased. I could really hear myself, way more than ever before (even when the Avatar crossover was working just fine), and there was nice low end and some high end pop when I needed it. Actually, the high end was a bit difficult to control - say, on a song where I doing a lot stoccato octaves constantly, I was having trouble with the high note not being TOO dominant. I'll have to figure that out. As the gig wore on, I noticed that if I really dug into lower register notes, mostly on the E string, I was getting either some distortion, or the speaker was hitting the grill, or something like that. I really don't know what was happening, but I had to be gentle.

So I am pleased with this cab, but now that I've had a taste, I think I'm getting Torin's disease. I really want to build a 12/6! A true fEarful must be so ridiculously nasty.
 

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