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Technical/Restorations

Talk about restoring older speakers and other technical/electronic information here.


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  • Recent Posts

    • It has to be the JJ2A3, though.
    • How much does that whole thing weigh? I know Carl built the F20, and this is larger, plus Rich had added trim to the cabinet.
    • Are you sure? I looks more like MM sensitivity not an MC. For most vintage MM stages it's usually around 2.5mV. Do you have gain parameter for this pre? What pre is that?
    • I just made this change in my system. You just need a sut, step up transformer they can be had for $200-$2000. I have a nice functioning Denon 302 I might consider selling. 
    • That is a previous generation PA3. Here are the (current generation) PA3s numbers.
    • @pnort43 What Shakeydeal said is good advice like usual from him!  When I changed over I did the preamp/cartridge together to match up better. Used the opportunity to put tubes into my SS rig and experiencing that changed my perspective involving music reproduction!
    • Morning folks, well I sure do feel a whole lot better except I'm just waiting to get my walking papers. I do not know if a stent was put in but it was on the list of possibilities and the paperwork prior to going in. What I've seen in the bowl does leave me to believe it's possible that the doc did put one in. Supposed to be freezing out there right now and then 76 Saturday 73 on Easter. So with the comings and goins that I'll post about in the what I got today thread soon will cover this whole week I'm sure!  Again, I appreciate the thoughts. Set my way this past month, especially the folks that pm'd me about this. They might have got an earful in turn, sorry.  But would not now because I could tell you for the first time since February 17th at 2:00 a.m. I've got no physical pain!!
    • New one on me. Two 15" plus 36" exponential horn.   https://www.facebook.com/marketplace/item/380496401544059/?ref=browse_tab&referral_code=marketplace_general&referral_story_type=general&tracking={"qid"%3A"-2276159352873485853"%2C"mf_story_key"%3A"5508755817058453884"%2C"top_level_post_id"%3A"5508755817058453884"%2C"commerce_rank_obj"%3A"{\"target_id\"%3A5508755817058453884%2C\"target_type\"%3A6%2C\"primary_position\"%3A7%2C\"ranking_signature\"%3A129860688467492189%2C\"commerce_channel\"%3A501%2C\"value\"%3A0.00032409647254585%2C\"upsell_type\"%3A3522%2C\"candidate_retrieval_source_map\"%3A{\"7276849122397615\"%3A701%2C\"7523618457677213\"%3A805%2C\"7557203937648797\"%3A3003%2C\"7253237614765901\"%3A805%2C\"6881174381987646\"%3A701%2C\"6934625686663686\"%3A3547}%2C\"grouping_info\"%3Anull}"%2C"lightning_feed_qid"%3A"-2276159627943044830"%2C"lightning_feed_ranking_signature"%3A"3087548943315585978"%2C"ftmd_400706"%3A"111112l"}
    • Ok, Thanks. I'm running mine on six channel Rotel RB-976mk2 but I'm ready for the change.   For noise figures (and thd) I was looking here   Aiyima A07   audiosciencereview 1   Topping PA3   audiosciencereview 2   Topping PA5 II   audiosciencereview 3      
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