DIY Audio Projects Forum

Pioneer SR_101
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Author:  Alpha Wolf [ 08 Nov 2017, 19:50 ]
Post subject:  Pioneer SR_101

Does any one know where I can get a new reverb tank for my old school reverb amp. I can not find any for s guitar amp that will work. I hate to just put this away. Since I had it since 1969. Besides the WIfe like to use it once in a while. She said it goes good with White Rabbit.

Author:  Geek [ 08 Nov 2017, 21:51 ]
Post subject:  Re: Pioneer SR_101 has reverb tanks and great service.

Not affiliated, just a happy customer.


Author:  Alpha Wolf [ 09 Nov 2017, 10:25 ]
Post subject:  Re: Pioneer SR_101

I have look there but nothing will work. The DR SR 101 is a stereo reverb that goes between the input of your power amp and the CD or turn table. It uses 2 6BM8 tubes for the drivers. Note they are not transformer coupled like in guitar amps. They have a cap from the plate of the tube to the driver coil. Pick up coil goes to 12AX7 then out. It is real y well made and has factory tubes. Never had problem till now.

Author:  Geek [ 09 Nov 2017, 14:08 ]
Post subject:  Re: Pioneer SR_101

Can you post a schematic? Lots of designers and real engineers here. We may be able to improvise a solution :up:

Author:  Alpha Wolf [ 09 Nov 2017, 17:27 ]
Post subject:  Re: Pioneer SR_101

I was an electronic engineer. I am now retired. I do have a schematic. But no way to scan it as it is paper. It is on line though. The problem I am havein g the pick up coil on the left channel spring reverb tank is open. It's a 1.2!k coil. I have even thought of re winding it but the wire is real y fine to try. I now just repair my own things and the amps that I have built and sold over the years.

Author:  Toobphonic [ 13 Nov 2017, 12:49 ]
Post subject:  Re: Pioneer SR_101

I recently bought an SR-101 from Ebay. One of the 5 mf capacitors for driving the spring tank from the pentode in one channel wasn't soldered and the cable connected to the tank pickup in the other channel came loose. After I repaired it, it worked. It has a strange metallic reverb sound if its turned up a lot. I was thinking of modifying it to drive some 3 spring Accutronics tanks.

Author:  Toobphonic [ 25 Feb 2018, 10:50 ]
Post subject:  Re: Pioneer SR_101

I did some modifications to my SR-101 shown here. ... 4&t=415394

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