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mc 60 choke [message #26121] Tue, 11 May 2004 20:59 Go to next message
mac is currently offline  mac
Messages: 2
Registered: May 2009
Esquire
I need to replace the filter choke in my mcintosh 60 power amp.I have a part # M-174 but have no idea what the specs are.ie henerys,ma,ohms ? can any one out there help ? regards Rich

Re: mc 60 choke [message #26122 is a reply to message #26121] Tue, 11 May 2004 23:21 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18794
Registered: January 2001
Illuminati (33rd Degree)
If it's a power supply filter choke, you can go with the rule that "bigger is better." The higher the inductance, the better. Same with wire diameter since that sets current carrying capacity.

If you're looking for a direct replacement part then hopefully someone else will chime in. But if you're looking for specifications of a suitable replacement, then go with the biggest coil that will fit, both in inductance and current carrying capacity.

Re: mc 60 choke [message #26123 is a reply to message #26121] Wed, 12 May 2004 15:59 Go to previous messageGo to next message
Larry is currently offline  Larry
Messages: 10
Registered: May 2009
Chancellor
we are factory authorized for mcintosh. i checked with the factory, and the original choke is no longer available.

Re: mc 60 choke [message #26130 is a reply to message #26121] Thu, 03 June 2004 21:47 Go to previous messageGo to next message
Gary Kaufman is currently offline  Gary Kaufman
Messages: 3
Registered: May 2009
Esquire
Specs on the M-174:

.116A, 37.5 ohm, 1.84 Hy

SAM's gives the following as substitutes:

Haldorson C5037
Merit C2974
Stancor C-2325
Thordarson 26C43
Triad C17X

All have different mounting and may require some sort of bracket.

The Hammond 159T 2.5H, 300ma, 43 ohms might work, but you'd need to check the size/mounting.

Lastly, did you consider rewinding? Chokes aren't very difficult to wind by hand. Just measure the wire gauge and count the windings as you unwind the old bobbin.

- Gary


Re: mc 60 choke [message #26131 is a reply to message #26130] Fri, 04 June 2004 03:37 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18794
Registered: January 2001
Illuminati (33rd Degree)
Wow, super interesting website, Gary! Good information about the coil, interesting website with lots-O-cool stuff. Thanks!

Thanks! [message #26132 is a reply to message #26131] Sat, 05 June 2004 16:00 Go to previous message
Gary Kaufman is currently offline  Gary Kaufman
Messages: 3
Registered: May 2009
Esquire
Wayne -

Thanks for the kind words. This is an easy hobby to get out of control with!

- Gary


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