Fisher 460A & 460T
- Thread starter PShuff
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Phyllis. It'll sound good on it's own merits. The outputs are EL-84's also known as 6BQ5s'. The Heavy duty version is the 7189. If you DO get the chadwick, you'll need to recap the speaker crossovers (1 or 2 non polar caps per side). New caps will restore the crossover frequency between the woofer's and mids and tweeters giving you the proper balance that FISHER was looking for.
The amp is fairly simple. About $30.00 in electrolytics and film caps. The electrolytics will need to go on installed terminal strips (you can place the where needed) to replace the sections on the CAN CAPS. 2-3 other films and the 4 output caps.
the preamp is in the tuner chassis and is a bit more crowded. There is one can cap, IIRC a 3 or 4 section. Better to order a replacement from Hayseed for this one due to location and space limitations. about 8 film caps and a couple of small lytics and that's it.
It'll sound different than the 500-C. If you used the same speakers, you'll notice some differences, but I couldn't tell you as I don't run my console amps with outboard speakers. It won't have as much power as the 500-C, but it WILL get loud and proud! Watch out for rumble and feedback from the phono. This is normal and can be minimized or eliminated with different cartridges, decreasing the bass, decreasing the overall volume, and isolating the turntable from the cabinet with better materials.
Consoles can be fun. they can also be addictive. So watch yourself.
Have Fun
Larry
The amp is fairly simple. About $30.00 in electrolytics and film caps. The electrolytics will need to go on installed terminal strips (you can place the where needed) to replace the sections on the CAN CAPS. 2-3 other films and the 4 output caps.
the preamp is in the tuner chassis and is a bit more crowded. There is one can cap, IIRC a 3 or 4 section. Better to order a replacement from Hayseed for this one due to location and space limitations. about 8 film caps and a couple of small lytics and that's it.
It'll sound different than the 500-C. If you used the same speakers, you'll notice some differences, but I couldn't tell you as I don't run my console amps with outboard speakers. It won't have as much power as the 500-C, but it WILL get loud and proud! Watch out for rumble and feedback from the phono. This is normal and can be minimized or eliminated with different cartridges, decreasing the bass, decreasing the overall volume, and isolating the turntable from the cabinet with better materials.
Consoles can be fun. they can also be addictive. So watch yourself.
Have Fun
Larry
You also should consider replacing the diodes in the power supply (look like little brass top-hats). Modern UF4007 diodes will be more reliable and an improvement over the originals - just make sure you follow the proper orientation as diodes, like electrolytic capacitors, are directional. Also, a CL90 installed in-line between the fuse holder and the power transformer will slightly lower voltages (since AC line voltages are higher today than they were in the early 1960s) as well as prevent cathode stripping on the tubes by not causing B+ slam on power-up.
Oh, and the amp is good for about 14WPC. Tiny OPTs but they sing oh-so-sweetly.
-D
