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AT1009 arm on Thorens TD14619 viewsMay 06, 2010
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Custom armboard for AT1009 arm on Thorens TD14614 viewsMay 06, 2010
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Thorens TD146 with AT1009 arm13 viewsMay 06, 2010
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Finally Solved my hum (ground loop) problem39 viewsFound this "drake" 15k to 15k bridging input transformer in my parts box and decided to give it a try in effort to solve my hum (ground loop) problem. Amps were quiet with their grounds lifted. However, I never felt real safe doing the lift. Now, with the input transformer the hum is gone :) Mar 01, 2010
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Tunning Capacitor?4 viewsThis appears to be one of the problems. Tunning capacitor is stuck. Mar 01, 2010
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Antenna Connections3 viewsLooks like one of hte antenna connections has come loose. Mar 01, 2010
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Front out of the case3 viewsFull range speaker and radio dial Mar 01, 2010
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National Radio Institute4 viewsAM Radio dialMar 01, 2010
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Under side of old AM radio4 viewsHere is the under side of the AM radio. It appears to be a single ended 6aq5 amplifier. Choke input supply. I plan to replace the caps as part of the restore. Mar 01, 2010
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Old AM Radio Case4 viewsWooden case of old AM radioMar 01, 2010
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DIY TT Shelf40 viewsFirst, I built the base that mounts to the wall out of a couple pieces of 3/4 inch plywood and two pieces of 2x4. Second, used some 2x2 hardwood for the back posts. I mounted the shelving brackets before leveling and mounting the 2x2's to the base support. Note the neat cable raceway, now I can keep the interconnects and speaker cables away from high voltage. Aug 03, 2009
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Shelf support brackets added36 viewsAug 03, 2009
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Here is shelf made of 24 inch x 17 inch plywood.41 viewsAug 03, 2009
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Right Shot35 viewsAug 03, 2009
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Left shot31 viewsAug 03, 2009
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Holst - The Planets23 viewsMy first open Reel :) Jun 11, 2009
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RT-707 Plays Holst !30 viewsMy first open reel and the first played through my old Otari by me was a Barclay Crocker copy of Holst "The Planets". So I just thought it fitting to fire up the Pioneer with the same reel. :) Jun 11, 2009
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Night shot RT-70722 viewsNote the glow of tubes below. That's my Citation II :) Jun 11, 2009
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RT-707 upclose and personel :)28 viewsJun 11, 2009
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System with Pioneer RT-707 R2R39 viewsJun 11, 2009
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RCA Input Jack39 viewsHave Dremel. Will travel.
I used this tool to rim out not only the larger hole shown here but also the smaller hole on the other part of the bracket needed for the solder side of the RCA jack. In this case, I only changed out the input jack, I left the test jack as it was. Feb 24, 2009
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RCA Input Jack38 viewsThe old jack sorta just peels off. Carefully spread the wing tabs back using a good pair of needle noose pliers. If done correctly, the whole thing just falls apart. Feb 24, 2009
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RCA Input Jack41 viewsAfter holes are rimmed, new jack mounted and panel front piece fitted. Feb 24, 2009
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RCA Input Jack46 viewsB Channel CompletedFeb 24, 2009
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RCA Input Jack40 viewsA Channel completedFeb 24, 2009
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Rectifier Bridge62 viewsCompleted bridgeFeb 24, 2009
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Rectifier Bridge69 viewsCompleted bridgeFeb 24, 2009
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RCA Input Jack31 viewsOld input jacks (B Channel and test jack). Feb 24, 2009
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RCA Input Jack31 viewsThe old steel input jacks. Feb 24, 2009
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RCA Input Jack33 viewsNote that the jack mounting plate consists of two pieces. The flat cover and jack mount plate. I generally use the RCA jacks from Radio Shack. Look closely at the jacks and you will notice a bit of a lip at their base. Because of this lip, one must rim out the hole slightly on the flat cover in order to fit. Feb 24, 2009
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Bias Supply Build81 viewsFinally, solder the open leads of the resistor and capacitor to the upper lug of T6. The Bias rebuild is complete. Tabs are still open for connections from the transformer.. Transformer White to T1, Transformer White/Orange to T2, tube bias to T4. For reference, above tabs are labeled left to right T1 through T6. T3 and T5 are not used here.
*Updated* added comments to the picture for tab names and wire locations. Feb 22, 2009
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Bias Supply Build97 viewsHere's a quick drawing of the bias supply. If I did this correctly, then no magic smoke will escape :) Feb 21, 2009
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Bias Supply Build68 viewsAnother shot. Notice the already soldered and trimmed T2 connection. Feb 21, 2009
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Bias Supply Build79 viewsPull the unsoldered end of the resister (T6) up out of the way for now. Same with the + side of the upper most capacitor in this picture. Then slide (tight fit) the Negative end of the rectifier through the T4 hole shared by the negative leads of the two capacitors. Slide the positive lead of the rectifier into the T1 tag hole. Solder and trim T1 and T4. Feb 21, 2009
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Bias Supply Build74 viewsT1 and T4 all soldered up.. Feb 21, 2009
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Bias Supply Build73 viewsFinally, solder the open leads of the resistor and capacitor to the upper lug of T6. The Bias rebuild is complete. Tabs are still open for connections from the transformer.. Transformer White to T1, Transformer White/Orange to T2, tube bias to T4. For reference, above tabs are labeled left to right T1 through T6. T3 and T5 are not used here. Feb 21, 2009
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Rectifier Bridge74 viewsUp close look at the rectifier bridge. Feb 21, 2009
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Bias Supply Build74 viewsForming and insulating the leads on the rectifier and resister ahead of time makes for an easier install. Feb 21, 2009
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Bias Supply Build71 viewsI started by mounting the resister between T2 and T6 tabs. Feb 21, 2009
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Bias Supply Build74 viewsFor proper alignment I mounted the two capacitors and 1.8k resistor to the terminal strip and bent the leads to stabilize. For now I only soldered the T2 tab connection. Note - Already soldered and trimmed T2 before I thought to snap a picture. Feb 21, 2009
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