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Calling All "Vintage" Integrated/Receiver Owners - Page 453

post #6781 of 13406

Wotts, remember that the most important thing to check and adjust is DC Offset.  You have to be very careful adjusting bias current, as you can actually damage the amp if you mess that up.  The screw pots typicall used for adjusting dc offset and bias can be a little wonky.  But getting DC offset right will make an amp sound much, much better.  

 

SO, that's a bummer for sure, but I know people who will make custom wood cases for the vintage Pioneer stuff that looks much better than the original. So if you decide the D7000 is a permanent keeper, this is a fixable problem ;)

post #6782 of 13406

That black Pioneer is gorgeous! I would probably trade my SX-1980 for that if I saw it locally. What is the model number on that anyways?

post #6783 of 13406
Quote:
Originally Posted by wotts View Post

 

 

Oh no!

 

 

I just ordered parts for my HPM-100 crossovers this week. With my speakers down for a few days, I'm going to open the SX-1250 and the 2265B and have a look at the caps. Check the bias too. I've been spending some time over at AK this past week, and it convinced me to look more into the vintage receivers.  I just love em.

 

Is it tough to learn how to do that kind of stuff? Do you need loads of special equipment? I hear it talked about a lot and it's something I might like to try myself.

post #6784 of 13406
Quote:
Originally Posted by PhoenixG View Post

That black Pioneer is gorgeous! I would probably trade my SX-1980 for that if I saw it locally. What is the model number on that anyways?

 

 It's the 5590, the black multi-voltage version of the SX-1250. And that particular one has been completely recapped and restored by a real pro.  It will sell for very big money.

post #6785 of 13406
Quote:
Originally Posted by Skylab View Post

Wotts, remember that the most important thing to check and adjust is DC Offset.  You have to be very careful adjusting bias current, as you can actually damage the amp if you mess that up.  The screw pots typicall used for adjusting dc offset and bias can be a little wonky.  But getting DC offset right will make an amp sound much, much better.  

 

SO, that's a bummer for sure, but I know people who will make custom wood cases for the vintage Pioneer stuff that looks much better than the original. So if you decide the D7000 is a permanent keeper, this is a fixable problem ;)

 

Now that the Fluroscan meters work, I'm keepin' this bad boy. Was gonna keep it anyway, actually. I discovered the meters work for speaker and headphone output. Still need to have the amp inspected, though. 

 

I have seen this model both with and without the wood and looks good either way. One day I'll get to it...

post #6786 of 13406
Quote:
Originally Posted by Skylab View Post

Wotts, remember that the most important thing to check and adjust is DC Offset.  You have to be very careful adjusting bias current, as you can actually damage the amp if you mess that up.  The screw pots typicall used for adjusting dc offset and bias can be a little wonky.  But getting DC offset right will make an amp sound much, much better.  

 

SO, that's a bummer for sure, but I know people who will make custom wood cases for the vintage Pioneer stuff that looks much better than the original. So if you decide the D7000 is a permanent keeper, this is a fixable problem ;)

+1 on caution with the bias pots. On one of my first rebuilds I forgot to preset the bias pot with the value in the original... Turned it on and poof, smelled smoke.  Had to deal with a mess of burned out resistors and transistors.

post #6787 of 13406

Hi guys I am new on this forum. Anyone got a good recommendation of vintage amp servicing with Ontario Canada? I got a Marantz 2220 that has an unusually high noise floor. Help very much appreciated!! 

 

Vincent

post #6788 of 13406
Quote:
Originally Posted by Skylab View Post

Wotts, remember that the most important thing to check and adjust is DC Offset.  You have to be very careful adjusting bias current, as you can actually damage the amp if you mess that up.  The screw pots typicall used for adjusting dc offset and bias can be a little wonky.  But getting DC offset right will make an amp sound much, much better.  

 

SO, that's a bummer for sure, but I know people who will make custom wood cases for the vintage Pioneer stuff that looks much better than the original. So if you decide the D7000 is a permanent keeper, this is a fixable problem ;)

 

 

Roget that boss. I've let the smoke out of enough stuff, and I'd like to not do that on these. Funny thing about smoke, you can't get it back in.

 

I started the HPM crossovers tonight. I'm 2 hours into the first one - the glue is being stubborn. I decided to upgrade the binding posts too, and that required a little modification. I'll post pics in the speaker thread when I'm done.

post #6789 of 13406

Yeah, that darned glue. Last weekend I modded a set of HPM-100 crossovers to lower the woofer -mid crossover point to about 1200 Hz.  Involved changing one of the inductors, which is a huge pain since it was glued to the board.  Managed to get it but it was so tough I lost steam and didn't actually try them out yet! This weekend hopefully

post #6790 of 13406

Goodwill find - only $13.99 + tax for a Pioneer SX 750!!!  And it works perfectly with only a couple of lights not working and a little static on the balance control.  I have been in this same GW 25 times and have not seen a thing, today I was just stunned to see this sitting there.  Any comments on the upside/downside of this unit are welcome.

 

 

post #6791 of 13406

Sansui G-6700 here !! 90Watts min. per channel --  THD 0.025 % --   one owner and won't ever sell it. This thing sounds ever better than my Mark Levinson Ampli. Connected to iMac with Musical Fidelity DAC ( got it recently ) 

 


Edited by IA64 - 3/27/13 at 5:11pm
post #6792 of 13406
Quote:
Originally Posted by IA64 View Post

Sansui G-6700 here !! 90Watts min. per channel --  THD 0.025 % --   one owner and won't ever sell it. This thing sounds ever better than my Mark Levinson Ampli. Connected to iMac with Musical Fidelity DAC ( got it recently ) 

 

Interesting that you mention this sounding better than your Levinson.  I had a Proceed Amp 3 for a bit, and while the transparency and detail were incredible - I found the sound to be a bit thin and strident at times.  Have since replaced the Proceed with two Jeff Rowland Model Ones in bridged mono configuration.  The Rowlands won't be going anywhere!   Never heard a Sansui receiver, but it must sound awesome.  Hopefully someday I will get my hands on one.

post #6793 of 13406
Quote:
Originally Posted by SpeakerBox View Post

Goodwill find - only $13.99 + tax for a Pioneer SX 750!!!  And it works perfectly with only a couple of lights not working and a little static on the balance control.  I have been in this same GW 25 times and have not seen a thing, today I was just stunned to see this sitting there.  Any comments on the upside/downside of this unit are welcome.

 

 

 

Great find! I need to start visiting thrift stores again! I visited them regularly for a while and never found silver.

post #6794 of 13406

Indeed, speaker box, that's quite a score for that tiny price! Very nice! Used for headphones or reasonably efficient speakers that should be a very nice little unit.  I've only heard the big brother SX-1250, but the whole SX-xx50 line is well regarded.

 

I've never, ever seen anything like that at my local goodwill.  And I'm pretty sure I never will.


Edited by Skylab - 3/27/13 at 7:09pm
post #6795 of 13406
Just bought a Pioneer SA-8100 off eBay. Will be trying the HD800 on it soon...

-Daniel
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