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Old 17th January 2006, 06:35 PM   #1
legarem is offline legarem  Canada
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Default Mcintosh Mc2300 driver boards transistors

I have to replace the transistors in a MC2300 driver boards. I think that these boards are the same as many Mc amps

I know that the drivers Q112-114 are 2N5320 and 2N5322

But what are the Q108-Q110 and Q102-Q104

Do someone has an idea about the original parts numbers or replacement parts numbers that have the same characteristics as original parts

Thanks
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Old 17th January 2006, 07:21 PM   #2
anatech is offline anatech  Canada
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Hi legarem,
Can you post the original part numbers for these (the house numbers)? I'll have a look.

Sorry, I don't have the manual for that one.

-Chris
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Old 17th January 2006, 08:33 PM   #3
legarem is offline legarem  Canada
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Hi Chris

Here are the Mcintosh part numbers

Q107-Q108 are 132-021
Q109-Q110 are 132-032
Q101-Q102-Q103-Q104 are 132-032

Drivers which I think are 2N5320 and 2N5322

Q111-Q112 are 132-038
Q113-Q114 are 132-039

Thanks a lot

Marc
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Old 17th January 2006, 09:01 PM   #4
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Hi Marc,
132-021 ->132-171 (MPSA05) 132-032 -> 132-172 (MPSA55) 132-038 -> 132-153 (2N5320) 132-039 -> 132-154 (2N5322)

From the industry numbers you should be able to replace these easily. If you use NTE or ECG I will not talk to you again. The semi police will come and smack you as well!

Why are you changing all of them??

-Chris
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Old 17th January 2006, 09:24 PM   #5
legarem is offline legarem  Canada
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Chris

The amplifier was in a bar and was badly repaired. It has many burned resistors. All transistors were changed on boards and are not the same from one channel to the other one.

I bought 30 (real) Motorola MJ15003 and matched them for outputs. Don't worry. i don't plan to buy NTE junk.

it seems that 2N5322 and 2N5320 can't be found now. Any substitution recommended ?

A last question. What's the transistor # for Mcintosh part # 132-515

Thanks a lot

Best Regards


Marc
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Old 17th January 2006, 09:43 PM   #6
anatech is offline anatech  Canada
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Hi Marc,
A bar amp. Standard hack service too. It never ceases to amaze me the things bar owners will run with, and the hackers they will employ.

You have your work cut out for you then. 132-515 ->132-028 (2N3738: 120V, 50mA)
The others might be replaced by 2N3440 and 2N5415. If you can't get those, another case style is needed. The originals Vceo 90V, 100mA, gain around 40. Dissipation around 10W on the heatsink.

I guess step one was clean, clean and clean.

-Chris
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Old 18th January 2006, 02:17 PM   #7
legarem is offline legarem  Canada
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Hi Chris

One last I forgot to ask

Mcintosh part # 132-031


2N5320 and 2N5322 seems like TIP 41C and TIP 42C

Do you recommend me these parts ?

Thanks again

Marc
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Old 18th January 2006, 02:50 PM   #8
legarem is offline legarem  Canada
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I made a little error


2N5320 and 2N5322 seems like TIP 3C and TIP 32C

not TIP 41C and TIP42C as written in my last message

Marc
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Old 18th January 2006, 07:07 PM   #9
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Hi Marc,
Correct me if I'm wrong, but the original parts were TO-5 or TO-39 case styled parts. How did you arrive at TIP 41/42 or 31/32 types (TO-220) ?

What cross reference did you use?

-Chris
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Old 18th January 2006, 08:46 PM   #10
legarem is offline legarem  Canada
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Hi Chris

I know that TIP31C and TIP32C are TO220 but electrically, they appears to be near 2N5320 and 2N5322. If you think that they can do a great job, I'll use them.

Please, don't forget to give me the substitute for Mcintosh part # 132-031

Cleaning is done (a lot of job) and Output replacement is also done.

I plan to turn on the beast during next weekend

Thanks again

Marc
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