Doug G.

Thanks for the fascinating thread you guys (he says while listening to his triple stack of original Advents :^) Doug

Mark, we heard you the first time! :+ Just kidding. What you had were Advent/2s in the white plastic cabinet. The tweeters are in one housing and are at different angles, right? I never heard these so I can't comment on that. Doug

Oops, my faux pas. I didn't realize that you actually measured them. Now who's silly? :^) But, I don't think Advent actually purposely put 13s in the originals. 'Course, somebody along the line could have changed them like you said. Was there any value printed on the caps? I suppose they could have drifted down to 13 from 16. Doug EDIT: You did NOT say "somebody" could have changed the caps. You said maybe Advent did. Read more carefully Doug. Hehe.

Silly Kent :^) If they are the original Advents (with masonite woofer surround) they would not have a 13uF capacitor in them but rather, either 2 16 uFs or 1 16uf and 1 8uF. The first is the series capacitor for the tweeter and the second is the resistor bypass capacitor when the switch is in the extended position (the cap. lets more high frequency energy to the tweeter). The 2 16 uF version is the earlier one used until about the middle of 1975 and then they switched to the 16/8 uF version. The resistor was also changed along the way from 4 ohms originally to 3 ohms sometime in the early seventies. The 8uF cap. holds back more of the lower upper frequencies and the tweeter doesn't have to work as hard to reproduce these freqs. thus maybe smoothening out the response or perceived response. Also, these are 2 way crossovers, not 3 (only 2 drivers). All of my Advents have the later configuration, having all been built in 1975 or 1976 so I have never heard (except for in the early seventies-too long ago to remember) the earlier ones. I know Jerry (BoldEagle in the forums) likes the later version and has changed his to this config. This harshness thing seems to be something that some claim bothers them and others don't really experience it. I, myself, don't think they sound harsh (unless the source is harsh). I would check out the crossovers and make sure everything is OK there. There is a schematic available in the library section of this site and you can get the values of the components from it. Ask more any time. Doug

>have a pair of advent speakers I was told they are worth >money. serial number U108163 I cant find info on them and >would like to sell but would like to be able to tell someone >about them thank you. jo Jo, It is generally not a good idea to come to a forum like this, where almost all of us are truly interested in these speakers for more than just their worth, just to find out how much you can get for them. You are likely to be met with silence or indifference. However, if your utilities are in excellent condition (no cabinet damage, perfect drivers not needing refoam, and no extraneous noises), they are worth about $100. Less if any of the mentioned conditions are not met. Doug

Wow! Kent's "House of Advent"! Hey, what's that driver on top of that New Advent with the round magnet? An interloper? Doug

By the way. If anybody wants to see some greenies with little magnets, there's a pair on eBay now. It appears that these have the randomly canted masonite plates. They do have grilles. Doug

An electric screwdriver will make taking all those tweeters out a lot easier. Hehe. Doug

You are correct Bob. The lower efficiency of the Smaller Advent was mostly offset by the ability of SS amps to deliver more power to a 4 ohm load. It's just that it doesn't appear that we can just go by diaphragm color to tell which is an "Advent Loudspeaker" tweeter or a "Smaller Advent" tweeter. Doug

A reply from the wretched, cursed depths of aitch-e-double toothpicks. I have used the same brochure as a guide to differentiate between the original Advent and the Smaller also. I have never seen one that stated that the tweeters were identical. Interesting. It does kind of follow, however, some discussions that have occured about later Smallers having large magnet tweeters. Advent must have changed them somewhere along the line. I maybe be imagining this but I seem to vaguely recall something about they decided that maybe the original alignment resulted in a bit too "reclusive" top end. A smaller magnet would reduce the sensitivity or efficiency of the driver. It takes more current through the VC to get the same excursion compared to one with a larger magnet. It's the same with electric motors. The stronger the magnet, the less current it takes to rotate the armature. It would be interesting to find out if they changed the crossover in the Smaller Advent as they did with the original Advent Loudspeaker over the period of manufacture. If they didn't, it would seem to support my supposition, above, that they decided that the Smaller needed more top end. If they changed the crossover at the same time as using large magnet tweeters, it would indicate that they maybe just wanted to use the same tweeter in both instead of making two separate tweeters. Does anybody remember the serial number restrictions Advent put on the back of the replacement tweeters? I'll have to see if I can find the info in past correspondence. Of course, this still doesn't resolve the green/orange issue because there are greenies of both large and small magnet design as Kent said. :^) I can't remember if there are both large and small magnet orangies. I now retreat into my cursed existence where there are no caregivers to help. :^) Doug EDIT: Oh yeah. As Kent indicated, the impedence of the tweeter has little really to do with the impedence of the speaker system as a whole. That is more determined by the woofer and crossover.

Guffaw. Heat resistant fingers. That really did make me lol. As part of my previous job, I was always making test fixturing for very small circuit boards (for hearing aids). I used a lot of Plexiglass which had protective paper on each side of a sheet. When the sheets were new, the paper was easily removed. However, when the stuff got a little older, it kind of stuck to the Plexi. I used a heat gun and my fingers to remove it. Sure could have used Kent's "heat resistant" fingers then. :^) Never could understand why things get so hot when you heat them up. :^) Like, when a solder blob drops onto your skin; why is it so dang hot? :^) Oh, Advent content - I like Advents too. :^) Doug

OK, Kent, we might as well get this out of the way. Rule #1: There is no boring re:Advents. OK? OK. :^) Doug

>Hi There; > >Welcome Kent to CSP. > >Actually the green Advent raised tweeters were only produced >on St Patricks Day. Oh Great! Another Advent version. "The Irish Advent Loudspeaker"! Hehe. No wonder "Danny Boy" sounds so good on my greenies. :^) Doug

>Wow, I can see I've set myself up (lol). Are you referring to >the early green tweeters or the later ones which were used in >a few of the Large Advents? This is actually relevant because when I bought my pair of walnuts made in 1975, I originally thought that the tweeters must have been replaced at sometime because they are green. I have since decided that they are original since the tweeter dates (AUG 29 1975)and the scrawled dates on the speaker boards (8-26 and 8-27) agree. I have also seen pictures of others built in 1975 with the green tweeters. They have the bigger magnets of the Large Advents also. DCR the same as the orangies. By the way, these were built a little less than a month before my daughter was born. What was Advent doing in 1975? >Ok, that was a cop-out answer, but it was also intended to be >in the spirit of fun in which you asked your question. Here is >the straight skinny based on my own testing. > >As far as DCR is concerned, there is NO DIFFERENCE >electronically between the two tweeters; they consistently >read around 2.9 ohms (+ or - .1). This applies to the most >common of the tweeter styles, the ones with the 45 degree >canted masonite board and the wire mesh grill covering the >tweeter. Agree! >The earlier version (the wire mesh covered tweeter on a >masonite board that is canted only a few degrees) also seem to >test out identically, but I've only had a very small number to >test. On both the orange and green of these, they were mounted >to the speaker using putty as a sealant as opposed to the >later foam gasket. Yup, I have decided that the ones only canted a few degrees are earlier. It appears that Advent only turned the masonite enough to enable access to the mounting screws and then later decided to standardize the 90 degree turn. I have heard before that the earliest ones used putty on the tweeters too but I have never seen any like that. I believe it though. >Sadly, I have never seen a pair of the Smaller Advent with an >equivalent tweeter to the original 1969 Large Advent who's >tweeter had no wire mesh over it. I think that's because the Smaller Advent wasn't released until they started applying the grilles to the tweeters. They began putting the grilles on in 1971 and actually supplied grilles to owners of earlier speakers free of charge if they wished to add them. >I hope I've passed your test (lol). Keep them coming - I enjoy >the challenge. Hehe, kind of but we still don't know why some are green and most are orange :^) Maybe they ran out of orange light bulb paint for a while :^) >Kent >

Hi Kent. Welcome. I see you buying and selling all the time on you-know-where :^) OK, if you're such a fancy schmancy expert, what is the definitive difference between the orange and green fried eggs (besides the color)? Please take this the right way. If you really were to know, you really would be THE expert. Doug