Some pics. I dismantled the entire unit to create the cap list, I tend to not trust service manual's very much.
Here is the EQ board.
Note the high quality caps used in these units. The greens caps are Nichicon MUSE, the gold are what I believe to be Chemicon's and the light brown caps are Elna Cerafine. Note the large heat sinks used to keep the to-220's cool, also a sign of a high quality piece.
The unit is very light without the transformer installed. Sony used what they dubbed the Gibraltar chassis, made from polyester, calcium and carbon. The transformer is quite large, while it's not toroid in design it heavy and potted.
Here is a shot with the front assembly removed. 2 x 15000 uf elna caps supply the B+ B -, they are held in place by the brackets in the pic as well as copper screws through the bottom of the board. Check out that main heat sink, it's HUGE!!!
The parts to rebuild will be ordered this week. I use Nichicon Muse, mainly fine gold for the majority of my rebuilds.
This was an odd find. This is a pic of the input control switch. By this time most of the manufacturers had the tech to rid units of mechanical switches, everything went IC. This unit uses a motor driven remote input switch. The control board on the front has wire header that travels from it to the rear right of the unit to the control. Very strange to see this in unit made in the early 90's. My 1982 Kenwood KR-1000 uses IC's for input switching and it's a decade older.
As a matter of fact I have two in my possession at the moment, one is mine and one is going to California when i'm done. I finally got it working today. It's got a bit of history if you want to hear all about it.
I've actually started hunting for one of those for myself. BK and I have discussed these plenty, and it will go through his hands for a rebuild, of course. It is about the only receiver that I really want.
I know where there's a third unit, getting it is proving to be difficult. The unit above and the other one were purchased by brothers out in Calgary in 1979. I guess the brothers are on the outs and the one brother won't sell- yet. Problem with the other unit i've been told is that the plastic dial piece in front is cracked, I guess I could have one made if need be- the other issue is getting the unit to begin with.
I've been fine, life's good and I hope you've been well. I've just been burnt on online forums and audio in general (for some of the reasons this place was started).
I always like hearing about Citation Receivers. I've never actually seen one in person. Part of me thinks I could just go back to a receiver and pick one of my turntables and be happy. Just box up the rest for retirement...
If I run across one I'll buy it in a heartbeat. I just haven't really been looking.
Well this is a good safe haven for you, nice to see you post again.
They really are nice receivers- well built and heavy. The touch control was a first of its kind that I know of, made up of 12 ic's on a board, very complicated and difficult to fix if it's gone south. Power supplies for each amplifier are independent, dual transformers, 4 main caps. Everything in the unit is metal, boxed up they weigh 60 lbs, a couple lbs less than a sx1250!. The tuning cap and cover is shared with the sx1250. It's got DC protection, glass circuit breakers in the chassis and thermal switches on the outputs. The pots are special one offs, possibly Bourns, that are dual function pot's and integrated switches- i've never seen any other unit that use them. The pre amp board is double sided trace as well as the phono board. 3 speaker inputs. The lid and sides are entirely steel, the top finished wood and every single unit is different.
I could honestly see myself, if staying on my current trajectory. downsizing to something like the Citation Receiver. I've thought about sending my MAC-1900 away to get rebuilt but I don't hear enough promise in its current state to really think it could replace my modern separates. This is sacrilegious in the audio world but I'm getting sick of spending so much effort caring about ultimate sound quality when I could be spending more time finding new music. My stereo is so complicated that my girlfriend can't figure out how to turn it on.
That bad eh? They are certainly wonderful units- it's trying to find one that is the hard part. Nobody knows the total production, i'd love it if someone really knew how many were built. I finished up the one I have destined for California. I think Matt will be happy with it, I ended up getting the AM working in it too. Now for a weeks worth of testing and it will go out in the mail. I should bench test it's wattage, I didn't do anything to mine to find out what they really put out.