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PrestonTom

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Posts posted by PrestonTom

  1. Noticed that Edgar said "selected number".

     

    So, yes the calculation is correct (if you said before the 1st roll) the probability of a "four", but you could have said (before any roll) any of the 5 other numbers. So the probability is a higher, ( that 4 rolls would be the same number, but not necessarily a specific number) but overall it is still quite small. 

  2. To the OP: the price and packaging of the JBL M2's are incorrectly stated in this  thread. They are not being sold at $25 k with amplifiers. New ones can be purchased for thousands less. They are also on the used market, and they can also be purchased without the Crown amplifiers. 

     

    If you are intent on the Jubilees (new or old style);   1) the new ones are cost prohibitive (IMHO), 2) the older style are no longer being produced and there are very few on the used market (there is an exception but the price was incredibly jacked up to the point where it no longer had a good performance to price ratio). 

     

    Good luck,

    -Tom

     

    EDIT: I see you just posted that you have the old style Jubilees. At this juncture you really need hear the other speakers (JBL M2's or 4367's etc, etc). At this price point there are some great speakers out there, each with their own personalities. Is there something specific that you don't care for with the old style Jubilees? I thought they were very good, especially at $8.5K. 

  3. 21 hours ago, PrestonTom said:

    The Jubilees are a fine system, I used to own some. They are large however, which is why I am gearing up to build some JBL M2's.

     

    The JBL factory parts are currently available and will run approximately $1400-1500 per cabinet. It does require a DSP crossover / equalizer. Many brands are available and you can then use your own amplifiers. You will need 4 channels of amplification and the DSP settings have been verified and published. Don't bother trying to "adjust by ear".  The M2 is about 20 in wide, 49 tall and 14 deep. If you keep the volume the same, then you can build them about 42 in tall and a little wider and a little deeper.  Plenty of info on Lansing Heritage site (the threads are long and the earlier posts have some misinformation which is later corrected). The threads over at the AVS forum tend to be even longer and with even more misinformation

     

    I have not heard the JBL 4367. It shares some similar parts to the M2 and has an analog crossover.  I have not heard them, although some that I trust say they are almost on par with the M2 (albeit with a "different" kind of sound). 

     

    My change was simply due to needing something that is more "living room size". 

     

    I have received several PMs regarding this, so let me answer publicly about the M2 (I am not involved in building the "alternative"  4367). The parts can be purchased from an authorized JBL dealer. Choices include Simply Speakers in Florida or Pro Sound Solutions in MA. Be sure to understand whether the price includes taxes and shipping and are the parts currently available. Over the last several years the prices have varied all over the place (both up and down) and sometimes the parts were restricted to "replacement parts only" with the usual restrictions. Right now things seem to be available and affordable.

     

    You will need the tweeter horn, the tweeter driver (skip the idea of trying to "upgrade" unless you know what you are doing), the woofer (and hint: the 2216nd is not the same as the 2216nd-1) and the flange plate. There is also a protection circuit ( a cap and a 2 resistor voltage divider). There are reasons why you may want to skip this circuit  or modify it, but you need to think it through. The cabinet stock (for a pair) amounts to about almost 5 sheets of MDF or plywood and the cabinet is well braced. There are factory diagrams / depictions shown over at Lansing Heritage. The ports are not available but you can get "similar" flared ports from Parts Express. With this sort of change, the best advice is to make the cabinet about 10% larger and the ports about 10% longer. Then cut the ports down until you get the port tuning down to about 26Hz (measured with an impedance sweep).  All the parts and their numbers, filters, and cabinet diagrams are discussed over at Lansing Heritage (you will need to do a considerable amount of reading and note-taking). Do not assume there is a Cliff Notes version. There are many details and they are mostly there for a reason. The JBL M2 is special. 

     

    The crossover/equalization is done with a DSP. Skip the idea of creating an analog version. Use the EQ on the tweeter exactly. For the woofer, the factory settings are the best starting point but keep in mind there are some "minor" filters that probably deal with some resonances in the factory built versions. Yours will differ a bit. Use REW and measure outdoors (properly). Do not try and do it by ear. The guy over at Lansing Heritage named "POS" is a real resource. Read his comments and suggestions carefully. There is a good deal of home work on this project. The actual build is easier than the Jubilee and it is easier to to do a nice job on the cosmetics.

     

    I think this is a great DIY project especially since you can get actual parts and info on the actual factory design.  This is in contrast to other projects that I see around here where folks pick parts and crossovers randomly with the "chorus of someone on the internet said it sounded great". 

     

    Either way, good luck,

    -Tom

    • Like 3
    • Thanks 1
  4. The Jubilees are a fine system, I used to own some. They are large however, which is why I am gearing up to build some JBL M2's.

     

    The JBL factory parts are currently available and will run approximately $1400-1500 per cabinet. It does require a DSP crossover / equalizer. Many brands are available and you can then use your own amplifiers. You will need 4 channels of amplification and the DSP settings have been verified and published. Don't bother trying to "adjust by ear".  The M2 is about 20 in wide, 49 tall and 14 deep. If you keep the volume the same, then you can build them about 42 in tall and a little wider and a little deeper.  Plenty of info on Lansing Heritage site (the threads are long and the earlier posts have some misinformation which is later corrected). The threads over at the AVS forum tend to be even longer and with even more misinformation

     

    I have not heard the JBL 4367. It shares some similar parts to the M2 and has an analog crossover.  I have not heard them, although some that I trust say they are almost on par with the M2 (albeit with a "different" kind of sound). 

     

    My change was simply due to needing something that is more "living room size". 

    • Like 3
  5. 32 minutes ago, ClaudeJ1 said:

    They should have had about 150 on order, with maybe 1/2 dozen delivered. They could be doing JIT, though, probably not on purpose!

     

    Do you guys really think that Klipsch buys their drivers from Parts Express?  Do you think that the manufacturer sends parts to Parts Express and to Klipsch that are pulled from the same bin? Not likely.

    • Haha 1
  6. To the OP,  Perhaps you now understand why it was suggested to move this to the Garage Sale section. But rather than moving the ad, you added a second version and are essentially running it in parallel. My friendly suggestion is to delete what you can and hope for the best.

  7. You have listed this ad in the Alerts section rather than the Garage Sale section. While it remains here, folks can challenge your statements, given unwanted advice and generally disrupt your sale. All this can be avoided by moving it to the Garage Sale section. 

     

    BTW, I think you are putting too much faith in the Prices that are stated in eBay. It is more complicated than that. ......

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