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Smaller Advent model find

I have them both going now, I'm very impressed with how solid the bass is, and how much bigger they sound than I expected. They had 12uf and 8uf caps in them, I used some Dayton 1% 8.2's and some used JBL 12uf's that were out of a pair of 4430's and checked out good.

I have switched back and forth between these and a pair of AR-18B's, the AR's are more efficient, but the Advents sound fuller. I always wanted a pair of spit wad speakers! :D
 

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Been using a pair of the smaller advents for a year now in the bedroom. I have been very happy with the sound.
 
i really like my small advents as well. I have limited experience in this hobby but so far they beat out a pair of Marantz Imperial 6's and a pair of KLH model 17's.
 
I have been comparing the Advents to a bunch of my other bookshelf models, AR-18's, ADS-700's, Klipsch KG-2's, and my Celestian's (forget model). These Advents are very near the top. :thmbsp:
 
Doug G. said:
The Smaller Advent tweeter was originally made with a smaller magnet assembly to match its efficiency to the woofer.



Doug
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My memory told me it was something done to help in production. The reason I thought it was because of the 4 V 8 ohm drive was due to the Small Advent was a 4 ohm.



Barney
 
You are correct, Barney, in that, when they made the smaller magnet tweeters for the Smaller Advents, I'm sure they wished to have an easy way to differentiate between the regular large magnet tweeters and the small magnet tweeters so the speaker assembler(s) would not put the wrong tweeter in any given speaker. It would be easy to keep stock correct.

It would be easy to tell a Small Advent tweeter from a large Advent tweeter just by looking at the color of the cone instead of the magnet size which isn't all that apparent if the two aren't side-by-side.

The impedence of the system doesn't really come into play as far as which tweeter to use, however. Both tweeters have the same DCR. It's the crossover which determines the system impedence.

It's just that the smaller magnet changes the efficiency of the tweeter to match the woofer so they wanted to make sure they got the right tweeters in the right system.

Later, they must have decided to match the tweeter by way of the crossover instead of the magnet size and modified the crossover to work with the larger magnet tweeters.

Doug
 
Doug G. said:
So Hutch is the casual listener and Sparky is the audiophile.

:D

Doug
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Yeah, Sparky is the lap dog, and will gladly join me while listening to music, Hutch prefers to chase squirrels above everything else. My big Fraziers will sometimes get them both barking when I use them for TV, they think they hear strangers talking in the house.
 
Just thought I'd add my $0.02 to the discussion. I have two pairs of Smaller Advents, with the following factoids:

Left pic: 1972 version, s/n 46XXX, green tweet (2.5" magnet), 8 and 16 uf caps, 1.5 ohm resistor, soldered wires, fiberglass stuffing.
Right pic: 1975 version, s/n 214XXX, red tweet (3.0" magnet), 4 and 8 uf caps, 3 ohm resistor, push-on wires, foam block stuffing.

Sounds to me from RS Steve in post #21 that his speakers with s/n 77XXX had cap values somewhat different from either of my pairs. Clearly, there were a few versions of this successful model.
 

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ra.ra said:
Just thought I'd add my $0.02 to the discussion. I have two pairs of Smaller Advents, with the following factoids:

Left pic: 1972 version, s/n 46XXX, green tweet (2.5" magnet), 8 and 16 uf caps, 1.5 ohm resistor, soldered wires, fiberglass stuffing.
Right pic: 1975 version, s/n 214XXX, red tweet (3.0" magnet), 4 and 8 uf caps, 3 ohm resistor, push-on wires, foam block stuffing.

Sounds to me from RS Steve in post #21 that his speakers with s/n 77XXX had cap values somewhat different from either of my pairs. Clearly, there were a few versions of this successful model.
Click to expand...

Great information ra.ra. :thmbsp:
 
Brian said:
I like them better than any other Advent other than the Powered Advents. With the right amp they can sound exactly like the OLA while not having the midrange suckout. As I downsize, I decided my OLAs were disposable while the Smallerss were to remain, at least for now. Though 4-ohm, they do not appear to present the nasty issues most 4-ohm speakers present.
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I've seen the impedance curve for these, and 4 ohms is the minimum impedance at some frequencies, but the average impedance over the full frequency band is higher, more like 6 ohms average. Some 4 ohm speakers are rated for average impedance, and have dips below 4 ohms in some frequency intervals, which strain an amp much more.

I really like Smaller Advents for small to medium size listening rooms, and consider them a strong candidate for the honor of the high water mark for bookshelf speakers driven without a subwoofer.

M2
 
musician2358 said:
I really like Smaller Advents for small to medium size listening rooms, and consider them a strong candidate for the honor of the high water mark for bookshelf speakers driven without a subwoofer.

M2
Click to expand...

I'm not sure what they are rated for as far as how low they dig, but for their size, the bass is impressive. I have a pair of AR-15's I want to compare them with, and see how they stack up against each other.
 
musician2358 said:
I've seen the impedance curve for these, and 4 ohms is the minimum impedance at some frequencies, but the average impedance over the full frequency band is higher, more like 6 ohms average. Some 4 ohm speakers are rated for average impedance, and have dips below 4 ohms in some frequency intervals, which strain an amp much more.

I really like Smaller Advents for small to medium size listening rooms, and consider them a strong candidate for the honor of the high water mark for bookshelf speakers driven without a subwoofer.

M2
Click to expand...

This is great information. I remember them as a teenager and I liked them but that was a long time ago. For only $20 I picked up a pair of Small Advents (Orange Fried Egg) that need refoam. I was concerned about the 4 ohms rating.

Would theses speakers still be 4 ohms of the e-wave mod is done to them?

Are they better with the e-wave mods?
 
bobins08 said:
This is great information. I remember them as a teenager and I liked them but that was a long time ago. For only $20 I picked up a pair of Small Advents (Orange Fried Egg) that need refoam. I was concerned about the 4 ohms rating.

Would theses speakers still be 4 ohms of the e-wave mod is done to them?

Are they better with the e-wave mods?
Click to expand...

I have no knowledge of the e-wave mods. They may be very worthwhile, but generally, I'm skeptical of mods for products that "got it right" originally. These are very precisely voiced speakers, and I would not assume that modifications would maintain that property, but again, I have no knowledge of this modification.

I've heard people claim that Henry Kloss said late in life that the original Smaller Advent was his favorite speaker and the achievement he was most proud of over a 50-year speaker design career.

M2
 
RS Steve said:
I'm not sure what they are rated for as far as how low they dig, but for their size, the bass is impressive. I have a pair of AR-15's I want to compare them with, and see how they stack up against each other.
Click to expand...

My 1973 Smaller Advents take the power of a stock PL400 pretty decent. Have not blown them up yet but I upgraded the woofers to a bit more powerful. They have green fried eggs in them. The 1971 OLA's I had came with the orange/red fired eggs
 
Northwinds said:
My 1973 Smaller Advents take the power of a stock PL400 pretty decent. Have not blown them up yet but I upgraded the woofers to a bit more powerful. They have green fried eggs in them. The 1971 OLA's I had came with the orange/red fired eggs
Click to expand...

I did notice one tweeter had 1973 on it, guess they are well worth the trouble. :thmbsp:
 
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