Posted in audio, gear, sony, vintage

    Another vintage Sony receiver came into my possession lately. This one is an earlier model compared to the TA-F45 I previously posted about, as you can probably tell from the size and woodgrain style. I've been having extremely bad luck lately when it comes to tracking down any kind of technical specs for stuff I've purchased. This receiver falls under the same category of the unknown.

    I know it entered production some time in the late 1970s and manufactured as late 1981. I read that it's rated at only 28 watts per channel, but after testing it, it honestly sounds quite a bit more powerful. I came to this conclusion by comparing it to my Marantz 2230 which is only 30 watts per channel, but this receiver seems to be able to drive my speakers significantly easier.

    Not much work was required other than a good dusting (the inside was thick with it) and the usual cleaning of pots and switches. I also needed to replace a single lamp. Luckily, I had a spare one handy from a previous project that fit the size and rating of the original. Here's the inside:

    Pretty spacious and looks easy to service, if needed. I found the angled tuner bits kind of interesting. This model has something called a "servo lock" tuner, which (as far as I can tell) only gives you a better visual clue as to when you are locked on a station. The word "servo" makes me think that it's supposed to physically lock onto a station with a motor of some kind, but it seems to work the same as any other analog tuner I've used. Maybe I'll look into it a bit more. Turns out that there is an electronic circuit that locks the station once you get close enough to the center frequency, so there is in fact a bit of extra magic going on.

    4 comments

    Brandon Nielsen

    Brandon Nielsen

    Beautiful specimen! I have the flagship of that line, the STR-V55. You can see a picture at the bottom of my post here: http://thedestitutedeveloper.blogspot.com/2014/01/…

    While I don't have a service manual for the STR-V25, I do have the Sony promotional material for the line. If you'd like I could send you a scan. It's a fun read for the buzzword bingo if nothing else.

    Jeff

    Jeff

    I'd like to see those, if it's not a big deal to scan. Thanks!

    Mike

    Mike

    I just got this one in for testing. I've got the manuals and promotional materials as well. Purchased December 1981.

    Dave

    Dave

    I've had one of these in my posession for about 20 years, given to me by a friend, his father bought it new and had it on a shelf in the garage for god knows how long.

    I have a Realistic LAB-340 turntable hooked up to it. I've been using them now for only a few months. I was playing the turntable through a large Sony MHC-GX570XM bookshelf stereo until I brought home a great pair of Kenwood JL-535 speakers from a thrift shop recently.

    Anyway, when I first set it all up, I was only getting sound out of one side of the receiver so had both speakers hooked up to one side. After using it a few weeks I thought I'd figure out which side was bad so i could get it fixed. But low and behold, it was all good! :) it then seemed to take an excessive amount of time to tur on but that seems ok now too.

    So I'm happy with it...just would like to get a better tur table now.

    On a side note I dragged home a nice Denon AVR-2700 with remote last week for $12.99 from the same thrift shop. Unfortunately, I'm not even nearly equipped to full test it :/ it looks like it was well taken care of.

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