pgodman Posted August 9, 2019 Share Posted August 9, 2019 Hi everyone, I have a 1969 LP Professional but dont have low impedance transformer cord. Does anyone know where I can get one? Love to get an original. I have emailed Gibson, but no reply. thks Quote Link to comment Share on other sites More sharing options...
Grog Posted August 9, 2019 Share Posted August 9, 2019 You can buy a Sure A95U at many retailers. It is the closest transformer available to the original. Keeping the transformer close to the amp gives you the best results. https://www.americanmusical.com/Item--i-SHU-A95U?src=Y0802G00SRCHCAPN&adpos=1o5&scid=scplpSHU+A95U&sc_intid=SHU+A95U&gclid=Cj0KCQjws7TqBRDgARIsAAHLHP7uL3x5laFbdaIpPs8OfoHkQtZZ3WjyrT3dZFrCMMG6TEfrnThYQKAaAgdnEALw_wcB I watched eBay for many years to find an original, they are rarer than Hen's Teeth! Quote Link to comment Share on other sites More sharing options...
pgodman Posted August 9, 2019 Author Share Posted August 9, 2019 Thank you !!! Quote Link to comment Share on other sites More sharing options...
Big Bill Posted August 9, 2019 Share Posted August 9, 2019 4 hours ago, Grog said: I watched eBay for many years to find an original, they are rarer than Hen's Teeth! I just happen to have a set of hen's teeth for sale at this moment! 1 Quote Link to comment Share on other sites More sharing options...
Grog Posted August 9, 2019 Share Posted August 9, 2019 Just a side note, you will need an "unbalanced" cable to go with it. I found this one at Sweetwater, but it is only 5 foot long. Mine is a Hosa cable also but longer. https://www.sweetwater.com/store/detail/PXF105--hosa-pxf105-5-foot?mrkgcl=28&mrkgadid=3308752981&rkg_id=0&product_id=PXF105&campaigntype=shopping&campaign=aaShopping+-+SKU+-+Accessories&adgroup=Cables+-+Hosa+-+pxf105&placement=google&adpos=1o5&creative=290335234793&device=c&matchtype=&network=g&gclid=Cj0KCQjws7TqBRDgARIsAAHLHP6s88rgwsAOrhnbg9j7HsRUizwe1Ez1OgU_HrkZIeaxSrMGrro9oU0aAjqeEALw_wcB Quote Link to comment Share on other sites More sharing options...
pgodman Posted August 12, 2019 Author Share Posted August 12, 2019 thks Quote Link to comment Share on other sites More sharing options...
325Jon Posted November 13, 2019 Share Posted November 13, 2019 Hi gang, I have a Les Paul Professional that had some modifications done to the electronics before I bought it, and I've been musing over the optimal way to plug it into an amp. I had no idea about the transformer cord being needed, and the guitar usually sounded a bit lackluster, but sometimes sounded AMAZING. I believe I have determined that it sounds amazing when using a nice, short guitar cord, and lackluster when using a longer cord. The electronic mods are as such: The decade knob has been removed from the circuit and one of the tone knobs also doesn't do anything. There is "something" under the hood that looks like a transformer, which suggests to me that somebody could have modded this guitar to behave like a later Les Paul Recording, which had an internal transformer and was thus able to use a normal guitar cable with it. It appears to have been re-wired by somebody who doesn't use a soldering iron for a living, leading to all manner of speculation over why it intermittently sounds good/bad. I am thrilled to have discovered that it sounds good with a short guitar cord plugged into it. Jazzy, spacious, neat... But I also have to wonder whether I'm doing things right. Do you think it's worth ordering an A95U? What kind of signal should I be expecting just plugging the guitar into an amp the regular way if the guitar weren't modified? After all, I'm getting a pleasing sound without the A95U -- how unusual is that? Quote Link to comment Share on other sites More sharing options...
Grog Posted November 13, 2019 Share Posted November 13, 2019 My Les Paul Professional had a large mic-style inline transformer soldered in when I bought it. It was easy to remove it & reconnect the jack wire in my case. On the website that Gibson lists their schematics I found this print that was modified in 1975 to include a transformer like a Les Paul Recording. I think it was fairly common for people to add a transformer to these to avoid the hassle of the chord with an inline transformer. They may have shipped the last of these with this modification. http://archive.gibson.com/Files/schematics/LPPro.PDF A few of us were pretty active in a "Low Impedance Club" thread in the "Vintage Corner" a few years back https://forum.gibson.com/topic/99362-gibson-low-impedance-guitars-club/ You might find some good info here..... Quote Link to comment Share on other sites More sharing options...
325Jon Posted November 14, 2019 Share Posted November 14, 2019 22 hours ago, Grog said: My Les Paul Professional had a large mic-style inline transformer soldered in when I bought it. It was easy to remove it & reconnect the jack wire in my case. On the website that Gibson lists their schematics I found this print that was modified in 1975 to include a transformer like a Les Paul Recording. I think it was fairly common for people to add a transformer to these to avoid the hassle of the chord with an inline transformer. They may have shipped the last of these with this modification. http://archive.gibson.com/Files/schematics/LPPro.PDF A few of us were pretty active in a "Low Impedance Club" thread in the "Vintage Corner" a few years back https://forum.gibson.com/topic/99362-gibson-low-impedance-guitars-club/ You might find some good info here..... Thank you! I plan to join the low impedance guitars club soon! Regards, Jon Quote Link to comment Share on other sites More sharing options...
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