| speaker cabinet wiring [message #28283] |
Sat, 31 July 2021 21:21  |
rustyfingers
Messages: 3
Registered: July 2021
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Junior Member |
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I just acquired a K200B-2 amp head only, I believe a 1971. I'm in process of either building a cabinet or purchasing used. It appears the K200B-2 amp would need a cabinet with 2 separate speakers, each with it's own jack. What wattage and impedance should the speakers be? I have a line on a Music Man 212RH-150 cabinet with EV speakers, but it is not wired. It was someone's project that didn't get completed. I haven't looked at it yet so I don't know the wattage or impedance of the speakers. It's suitable priced and a serious consideration in place of building a cabinet from scratch. Also, what function does the footswitch serve for this amp? It did not come with one, but I do have a single button one I'm considering using. Thanks in advance. Rusty Fingers
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| Re: speaker cabinet wiring [message #28284 is a reply to message #28283] |
Sun, 01 August 2021 06:34  |
stevem
Messages: 4778
Registered: June 2004
Location: NY
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Senior Member |
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The K200 models want to see a 4 ohm load to output it's full 100 watts RMS of clean output power.
You can run it on a 8 ohm load or a 16 ohm load but then the amp will only output 60 watts or 34 watts respectively.
This amp has reverb and tremolo and you do not need a foot switch to turn on either, but you DO need a foot switch to turn them off on the fly.
If you only have that single button foot switch you can use it but you will only be able to turn on and off the reverb on the fly and you will be able to get the tremolo on at all.
You need a generic two but foot switch with no LEDs which you can get from Antique electronics / Tubes and more.
[Updated on: Sun, 01 August 2021 06:35] Report message to a moderator |
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| Re: speaker cabinet wiring [message #28288 is a reply to message #28287] |
Sun, 01 August 2021 17:49 |
rustyfingers
Messages: 3
Registered: July 2021
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Junior Member |
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OK thanks. I cleaned up the pots and yes you are correct, the 2 outputs are wired in parallel. The left/reverb/tremolo channel is still a little "weaker" than the right/bright channel. But I suspect after another cleaning to make sure I got all of the junk out of the pots, it should sound a little more equal. If not, then maybe time for some new pots. I seem to be picking up a lot of hum, but from what I understand, Kustoms are not particularly quiet. And I'm almost suspecting, it might be 60-cycle hum from the house electrical and my PC that's nearby. Would it help if I shielded the inside of the wood amp cabinet with either some foil tape or shielding paint like I did on my Strat to reduce hum? Just a thought.
Oh and the Holmes is SS. Not particular problem, just looking for a manual or anything else that might be out there for it. It's a mid-70's and not a bad little amp.
Thanks again. Rusty Fingers
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