Kenwood Basic M2A Recap

[CohibaJoe]

Next up....Kenwood Basic M2A

Was a Fleebay buy at a C-Note...Nothing wrong with it(no one buying at 2AM)...And was a Local sale.

Cap List:

Power Supply:
Main Cap: Cornell Dubilier 380LX 5600uf/63v
Other Caps: Panasonic FR/FC

Power Amp:
Main Caps: Cornell Dubilier 380LX 10000/100v and 10000uf/80v
Other Caps: Panasonic FR/FC, Nichicon ES,KL,ELNA SILMIC II

Display:
Caps: Panasonic FC, Nichicon ES

Look over the Amp...I saw this ...Look at the Last Picture. That's a
100v 4.7uf cap.

Starting the Power Supply Board

 

[CohibaJoe]

OK..Power Supply Board is Done.....

Will start the Power Amp...Will be done this weekend.

Stay Tune!!!!

 

[theophile]

Had you listened to it before the recap?

 

[CohibaJoe]

Had you listened to it before the recap?

Yes...And it sounds Very Nice.

But...Need to Extend the Life of the Amp..and these are tired OLD caps.

 

[theophile]

I await with interest, you further impressions of the recap.

 

[R-2-R]

Thanks for posting and sharing. :tresbon:


The Kenwood M2A power amplifier is an "expectional" power amplifier to have in one's audio setup, IMHO. :yes:

 

[moejr]

Next up....Kenwood Basic M2A

Was a Fleebay buy at a C-Note...Nothing wrong with it(no one buying at 2AM)...And was a Local sale.

Cap List:

Power Supply:
Main Cap: Cornell Dubilier 380LX 5600uf/63v
Other Caps: Panasonic FR/FC

Power Amp:
Main Caps: Cornell Dubilier 380LX 10000/100v and 10000uf/80v
Other Caps: Panasonic FR/FC, Nichicon ES,KL,ELNA SILMIC II

Display:
Caps: Panasonic FC, Nichicon ES

Look over the Amp...I saw this ...Look at the Last Picture. That's a
100v 4.7uf cap.

Starting the Power Supply Board

That's alot of Amp for a C-Note. Excellent buy

 

[qsaudio]

I hope you go through the trouble of using the sigma drive idea with the extra speaker wires. Seems people just hook up the speakers and ruin the whole reason why they made those. It is a very good theory to base a power amp design on, in my opinion.

I think it brings it up to crown status for the amp-to-speaker cone-coil control.

 

[jayczar]

One of the few Kenwood amps to own after the 700M imho.

 

[moejr]

I hope you go through the trouble of using the sigma drive idea with the extra speaker wires. Seems people just hook up the speakers and ruin the whole reason why they made those. It is a very good theory to base a power amp design on, in my opinion.

I think it brings it up to crown status for the amp-to-speaker cone-coil control.

No sigma drive on the M2A. Only the M2

 

[qsaudio]

No sigma drive on the M2A. Only the M2

Oh, well blows that plan

 

[loose ends]

A lot of us have those amps. A cap list would be a very good thing.

 

[moejr]

Yes a Cap list would be awesome. I got to do mine at sometime even though it purrs as it is now.

 

[CohibaJoe]

A lot of us have those amps. A cap list would be a very good thing.

Yes a Cap list would be awesome. I got to do mine at sometime even though it purrs as it is now.

OK..I will get the Mouser list together...

 

[CohibaJoe]

Display Board is done...

Power Amp is next and last...

 

[CohibaJoe]

Power Amp Board is Done...

How does she sound... I kicked this up a Bit...WOW...This Amp is Very Detailed and Clean.

From Stock...The Bass has more Snap and Detailed (Low-Mids-Highs)...I am Very Impressed.

One reason I Recap:

Talk about being Naked....

Next Up...Luxman R-1050 then I am getting in L-100.

 

[undergroundr]

Thanks for posting this. Considering doing my M2 one of these days.

 

[Beetlebum]

I've got a couple of these now, I also thinking about doing the cap job as it doesn't seem to difficult.

Has anyone given thought to upgrading the power mosfets ? I saw this as an option at the DRMaudioKits.com website, but the guy's been offline for months.

 

[MudSlideSlim]

ChohpaJoe
Just to chime in on what you have previously said.

I started using my M2A on a lark because it has vol controls for DAC to Amp use cutting out the C2 preamp. Not that I'm at your level of expertise but I replaced the speaker terminals and detoxed my M2A.

Wow it really seems to tighten everything with more detail then I can recall from previous experiences. It made the C2 seem like the weak link in the chain. Sure the bass was tight and excellent, but the upper mid range has excellent clarity. These are just first impressions but I would upgrade from a backup to a 'best buy' keeper. Your mileage might...

Michael

 

[loose ends]

Chohpa Joe, I got excited when you mentioned working on a cap list so I took the cover off one of my amps and it sat on the bench. I got board so I figured I would do something with those speaker connectors. I added 5 way binding posts and now I can use the really good wires I make.