PartsExpress: Dayton "AIRs" -- what do y'all think?

Hi All; sorry for the delay. The woofer is a Dayton model no.DC160S-4 Nice heavy well built driver. The xover is the inductor, that I am not sure of the value, wired from the positive speaker input in series with a Solen 7.5 uf 400v cap connected on the other end with a 6ohm 1% wirewound resister mills mra 12 which then is wired to the positive of the tweeter. I will try to post a photo asap. Also I might be able to get the inductor value from old orders placed on Parts Express. Thanks for your patience. A lot of times these mods don't seem all that effective; or they just change the sound without really improving, but in this case it seems to work well. Cheers.
 

mhardy6647

Señor Member
saw this link to a 'review' of the cheaper, non-AMT morph of these little loudspeakers Someplace Else.
Might be of interest to someone here, so I'll share the link. Again, this version has a very generic/basic little dome tweeter in lieu of the generic AMT found on the B652-AIR.

https://cheaptubeaudio.blogspot.com/2013/10/?m=1

Offered strictly FYI & FWIW, as-is, YMMV, et cetera, et cetera, et cetera. :)
 

mhardy6647

Señor Member
well, if you look at that Polk forum thread, you'll see that I started with cannon fodder loudspeakers -- to wit, the titular AIRs :)

(and you'll see why)

But, you know what? It does not sound bad at all.
It's a weird component, no matter how you look at it -- but it's not embarrassing at all to listen to.
By tomorrow, perhaps I'll work up the nerve to try it on a pair of real loudspeakers.
 

mhardy6647

Señor Member
Per that "radiomuseum" link, the power amp uses LM1875 chips, and according to TI's website, that operating class of the LM1875 is class AB.
http://www.ti.com/product/LM1875

I will pop the hood (or, perhaps more accurately, drop her drawers) and see what's really inside anon.

Among the Great Mysteries of the Ages for this amplifier.

  • Does either of the tubes actually do anything? (particularly the EL84)
  • Does the amp really run the filament voltage just short of thermonuclear fusion?
  • Does anything sub for a Chinese 6N1?
  • What's under that "transformer bump"? (if anything)
 

mhardy6647

Señor Member
I did some Googling last night and it is really unclear to me

1) Is a Chinese 6N1 "identical to" a Russian 6N1P?
2) Can a 6922 be safely/effectively installed in this little amplifier?

of course, re: 2) effectively would presuppose that the preamp tubes actually do something in this amplifier. :p
 

mhardy6647

Señor Member
A completely sideways datapoint.

I extracted one of the small signal tubes (labeled "6N1-J", actually, not that this is very helpful) and tested it, just for shoots and googles* in my trusty and longsuffering Sencore Mighty-Mite III emissions tester.

It tests good as a 6922 :)

__________________
* as I like to say... I like this slightly better than the more common phraseology :)
 

TubeHiFiNut

Administrator
A completely sideways datapoint.

I extracted one of the small signal tubes (labeled "6N1-J", actually, not that this is very helpful) and tested it, just for shoots and googles* in my trusty and longsuffering Sencore Mighty-Mite III emissions tester.

It tests good as a 6922 :)

__________________
* as I like to say... I like this slightly better than the more common phraseology :)
SCIENCE strikes again! :)
 

mhardy6647

Señor Member
so -- y'all can probably tell from the long delay in my posting anything to this thread that I wasn't terribly impressed with these little cheap loudspeakers in their stock configuration, although, yea, the little "AMT" tweeters are nice.

I am posting to it today, though, because I stumbled across this little "review" (of sorts -- consider the source! ;) ) link posted Someplace Else.
https://www.cnet.com/news/this-starter-audiophile-system-sounds-outrageously-good-for-88/

I actually haven't tried the speakers with the little Lepai amp (I have one of the earliest morphs thereof, bought on sale long ago wicked cheap); guess maybe I should -- you know, for completeness.
 
Good catch @Celt :)

Looks impressive.

Floorstanding tower with 2 x 6 inch woofers plus the AMT tweeter for $125 each.

88db efficient - should be OK with the majority of the Doorway amps we've been discussing.
88 isn't bad. My son is asking for a subwoofer to compliment the Jolida PSB combo. I'm thinking this might be a better direction. Hope I'm not thread jacking @mhardy6647 . Good topic!
 

mhardy6647

Señor Member
Well, given my goofy odyssey with the ELACs (most of which was just stubborn ignorance on my part!) I decided to swap the Dayton B652-AIR speakers in to the 'optimized' ELAC system (i.e., Yamaha CR-2020 for power, and those incredibly sophisticated stands I showed in the ELAC thread).

Tonight, I listened to the excellent Joni Mitchell CD Hits on the ELACs and I am now listening to it again on the Daytons :) The Daytons certainly sound better to me tonight than they have in past encounters. They do not produce much of anything in the way of bass (these are absolutely stock, as received from PE) -- although the bass line (which is really nice, BTW!) in Carey is very easy to follow and also very tuneful (not thumpy/bumpy/lumpy at all) on these. The "AIRs" seem a little (EDIT) more 'piercing" than the ELACs but they hold up pretty well by comparison. The "AIRs" are also commendably transparent (actually, surprisingly so, given the cheap drivers and embarrassingly simple/cheap XO).

I also noticed that they're currently "half price" at PE -- FWIW. $50.88 (USD) the pair at the moment.
That's not why I started fiddling with 'em again tonight, though.

Just thought all y'all might want to know.

NOTE ADDED IN PROOF: The cymbals in Help Me are sounding so remarkably right... like they're made out of some sort of centuries-old secret alloy formula, rather than being made of splashy static. ;)
 
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Thermionics

Post Whore In Training
I also noticed that they're currently "half price" at PE -- FWIW. $50.88 (USD) the pair at the moment.
That's not why I started fiddling with 'em again tonight, though.

Just thought all y'all might want to know.
Dammit...you are such an enabler.
 
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