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Doug G.

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About Doug G.

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    Rochester, MN

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  1. Doug G.

    Blown New Advent driver

    You need to leave a note in your will that if anybody so much as frays a single strand of grille cloth on those speakers, you will come back to haunt them for life. Doug
  2. Doug G.

    Small Advent Rebuild by Pete Basel

    If the tweeter has a 1972 date on it, the magnet is a small one (2.5" square. not 3" square.). Any green tweeter from about 1975 on has to be checked for magnet size as Advent used up the green cones, even on large magnet tweeters. Doug
  3. You don't need the crossovers to basically get sound out of the woofers. His use of the word "static" indicates he doesn't really know much about HiFi or sound reproduction. What's probably happening is the surrounds are bad and the voice coil is rubbing on the magnet pole piece. That's probably the "static" he hears. The drivers are making sound, however. It's up to you whether or not to persue the drivers because it's hard to tell exactly what's going on but usually, the surrounds have deteriorated and the rubbing occurs. You may want to talk to him again and see if you can get a more specific description other than just "static". Doug
  4. Doug G.


    My opinions are based strictly on observation of sound and deduction from owning both colors of tweeters. Also, deducing a logical progression of events at Advent. The cone color doesn't make any difference per se. The green cones were originally used on the Smaller Advent for easy identification to be sure a given tweeter was not put into the wrong speaker system. I assume both the original Advents and Smaller Advents were made in the same factory and, even if not, the tweeters were most likely all made in the same place so keeping them separate was important. Since the original Advent orange tweeters have 3" square magnets and the early (pre 1975) Smaller Advent tweeters have 2.5" square magnets, coloring the cones green for the Smaller Advents conveniently made identification easy. In 1975, when Advent made a change to the Smaller Advents, using the same large magnet tweeter of the large Advent and compensating the efficiency with a crossover change, there were obviously green cones left over and Advent used them up. Hence, tweeters from both the large Advents and Smaller Advents, from this brief time period can have green or orange cones. They are, except for the cone color, electrically and physically the same. When Advent ran out of green cones after this short period of time in the latter part of 1975, the cones were then all orange in both the large Advents and Smaller Advents. There will never be an orange-cone tweeter with a 2.5" square magnet. The determining factor is thus, the size of the magnet, not the cone color. I have always found they sound the same as long as the magnet size is the same, tweeters with smaller magnets having a slightly lower output for a given input. I hope this is all at least semi clear. Doug
  5. Doug G.

    Questions on OLA (stacking and fried tweeter change)

    The markings on the tweeters are factory. I have seen crossed out ones too and, as a matter of fact, I believe at least one of mine is like that. Anyway, the "X" marks the positive terminal although doing your method of checking would be interesting. I believe the inconsistency of which terminal is positive is probably from the windings being so small and the assembler probably running the wrong end of the winding to a given terminal. Go by the mark or, if your testing contradicts the mark, by that. The gray glue tweeter is a fairly early one. The brown glue was later and went to the end of production of the original Advent in 1977 or 1978. I don't have my stacks as per convention on forums. I run both speakers right-side-up. I thought there seemed to be more interference between the two tweeters when they were close together. With them farther apart, there seems to be more "air" or spaciousness. I know some will say that's actually a symptom of comb effects but I think it sounds better. Doug
  6. Doug G.

    Advent/1 vs New Large Advents

    The New Advents and Advent/1's DO use identical drivers. Different crossovers. The basic difference between the two models is that the New Advents will have about another octave lower output than the Advent/1's. In other words, more bass. Doug
  7. Doug G.

    What's the impedance on the Advent/1?

    I believe the only Advent to NOT be a nominal 8 ohm load is the Smaller Advent at 4 ohms. Doug
  8. Doug G.

    Advent refoam (again)

    Thumbs up icon here. Doug
  9. Doug G.

    Advent refoam (again)

    If you are able to do it, do it the way Advent did it. Surround flange on the bottom of the cone. It's not that difficult. It would bug the hel* out of me if I did it wrong. Some people, even so-called experts/professionals, are just lazy. Doug
  10. Doug G.


    I have gotten surrounds from Rick Cobb for quite a while now. Google his name and you will find his contact information. Doug
  11. Doug G.


    As in the other thread, as long as you use drivers appropriate for the cabinet size, you'll be OK. Acoustic suspension speakers are not that critical that the cabinet be exactly the same, volume wise. The drivers for the earlier Advent/1 will work for you. Doug
  12. Doug G.


    Since the 4002 replaced the Advent/1, which used the same drivers as the New Advent, you could use your woofers and get New Advent tweeters along with their crossovers. The New Advent tweeters are still fried eggs but are mounted flush with the cabinets and have the metal screens cut away on the sides. You would then basically have a pair of Advent/1s. Doug
  13. Doug G.


    Assuming you mean the 5002-size cabinet, it is close enough for it to work as long as you use the original crossover, as you indicated. Doug
  14. Doug G.


    Hehe. Pete gets a little wordy, at times. Doug
  15. Yup. congrats. Advents are well worth it. I had 10 woofers to do and I just thought I had to streamline the process a bit. Doug