All I can say is make sure you directly A/B a high quality 410 (you can find them about the same weight) with the PJB cab you are talking about before you buy one:
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Yo Aguilar, where's your Micro????
- Thread starter trjazzluva05
- Start date
All I can say is make sure you directly A/B a high quality 410 (you can find them about the same weight) with the PJB cab you are talking about before you buy one:
Those are both too high, and therefore skewed. Don't go by frame mounting centers, go by actual cone diameter, which is much smaller. The 18Sound 10" driver spec sheet I'm looking at right now spec's ~54 in^2, for instance. For a Faital 5 I'm seeing 17.6in^2.
So, for these particular drivers: 8 X 5 = 140.8in^2; 4 X 10 = 216in^2. Quite a bit different than what you posted, no? This'll vary a bit depending on individual driver BTW. And watch out for bad spec sheets -- the Faital 5 and 6 ones were interposed on the US Speaker website.
But what's really important is actual cone displacement, which depends on Xmax times surface area. I'll leave it to someone else to do the math...
--PW, aka Pedants 'R Us
Well there ya go
I think damping factor has been addressed, to the point that it is a non issue. There may have some early Class-D designs that did not use negative feedback. Some, for instance headphone drivers in portable electronics, still don't.
- Feb 12, 2006
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- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
IMO, even without NFB, advances in power semiconductors, drive techniques and output filters have improved damping factors to very good values.
It's so easy to get stuck in urban myth that may at one time been true, or true only in poor quality designs.
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The heaviest component in a bassist's rig is typically the bassist. Get rid of that dude, and all that gear. . . .
Instead, let the keyboard player use their left hand, or a foot to "kick the bass." Synth tone has come a long way, baby.
Problem solved.
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The heaviest component in a bassist's rig is typically the bassist. Get rid of that dude, and all that gear. . . .
Instead, let the keyboard player use their left hand, or a foot to "kick the bass." Synth tone has come a long way, baby.
Problem solved.
.
.
Uh. Not sure what your point is. It's quite compatible to hold your belief and have a sensible discussion on the amplification market's offerings and hopefully offerings. You are making a senseless mockery of the thread.
I mean, maybe in a 'WHAT'S MOST IMPORTANT TO MY TONE: ME OR MY AMP D0000DZ?' thread your remarks would be more appropriate, but this is pretty far off from that.
Oops . . . another joke goes by without a laugh . . . must be that my class-D joke supply hasn't yet reached maturity for its output to be perceived as a joke! Although, the sense of humor in the thread may have achieved micro status . . .
I have generally never been a huge fan of Class D amps. They just seem a little sterile sounding to me. That said, I own and gig with 2 of them. An AI Clarus, and an EA Micro. The gigs I play involve a lot of moving(elevators, stairs). I must say, the trip back to the car at the end of the night is much more fun in one trip I don't think that 18 lbs for a great sounding head is too heavy however.
I don't think that 18 lbs for a great sounding head is too heavy however.
I have generally never been a huge fan of Class D amps. They just seem a little sterile sounding to me. That said, I own and gig with 2 of them. An AI Clarus, and an EA Micro. The gigs I play involve a lot of moving(elevators, stairs). I must say, the trip back to the car at the end of the night is much more fun in one trip
my shuttle, nor the tc elec, nor the gk box i've used, tried and owned sound sterile to me.
rather they lack a certain hefty grunt that only big iron seems to have. but i wouldnt necessarily say sterile.
I have generally never been a huge fan of Class D amps. They just seem a little sterile sounding to me. That said, I own and gig with 2 of them. An AI Clarus, and an EA Micro. The gigs I play involve a lot of moving(elevators, stairs). I must say, the trip back to the car at the end of the night is much more fun in one trip
I really don't think you can make generalizations about 'class of amp' anymore. There is just as much variation among 'class D amps' regarding fatness, warmth and tone as there is among the more traditional class A/B amps, with or without SMPS.
I do find the two executions you mention a bit 'dull' sounding (i.e., compressed a bit in the deep lows and upper treble). However, other class D executions sound very different. For example, the Genz voicing is very punchy and bright. The TecAmp voicing is HUGE down low and very, very hi fi crystal clear up top. The TC RH450 sounds like a gosh darn SVT in many ways. The Epifani 902 is hugely fat and big down low, with a very hi fi sheen up top, a bit similar to the TecAmp stuff. The Markbass LMII is a unique combination of very warm but also mid present and crisp in a more organic way up top.
The point is, these amps all sound VERY different, and they are all class D/SMPS.
KJung, did you ever review the Ashdown Little giants?
you (and a few others) seem to be the guys in-the-know about amps and such, and i'm curious what the general consensus is...
yeah, i've searched. and yeah, i own one. but knowing is half the battle
you (and a few others) seem to be the guys in-the-know about amps and such, and i'm curious what the general consensus is...
yeah, i've searched. and yeah, i own one. but knowing is half the battle
KJung, did you ever review the Ashdown Little giants?
you (and a few others) seem to be the guys in-the-know about amps and such, and i'm curious what the general consensus is...
yeah, i've searched. and yeah, i own one. but knowing is half the battle
I've never seen one of those, so can't help there.
You are right, and I do agree. There have been so many advancements in Class D design in the last few years that its unfair to make this generalization. While I am not a HUGE fan of the Markbass amps(primarily since I play the DB almost exclusively I don't find the tone to be what I am looking for), they aren't sterile at all.
Yes! This is what I was mainly thinking as well. You lose that "weight" to the sound for lack of a better word.
which is exactly the reason why i dont gig w/ the "lightweight" stuff anymore. nothing beats iron. nothing.
and yes, i'm working my career, so that i can have roadies when i'm 50.
If Aguilar is going to investigate switch mode transformers I would much prefer they use them to build a low weight all tube head.
+1 I got a little sloppy in my description and example. There are a few class A/B/SMPS amps out there, like the LMII/III/Tube, the TecAmp350, and possibly (Epifani spec's are so error prone on their site and literature that I've learned to not believe them) the upcoming Piccolo.If Aguilar is going to investigate switch mode transformers I would much prefer they use them to build a low weight all tube head.
Peavey and Markbass are already there with that.
