2. amps-preamps
  3. 158517-142512

100W, 200W, or 300W?

I'm pretty new to this and could use some help. Working down my list of upgrades: did speakers, room treatment on order... I think next up is to replace my amp.

I'm currently using a Harman Kardon PA2000 stereo amp that I had sitting in storage. 100 WPC @ 8 Ohm. It's "OK", but it probably the weak point in my system right now.

For speakers, I picked up B&W 805D3 tabletops with stands.

88 dbSPL sensitivity, 8 ohm. They recommend 50-120W @ Ohm for the amp power on their site.

I pulled up an amplifier calculator and plugged in some numbers:

88 sBSPL, 8 ft distance, 85 dB volume w 15 dB headroom and this came out to 3W RMS w 94W peak

I have my heart set on blue watt meters so I see the following options:

1) MA5300 @ 100 WPC, no autoformers, integrated
2) MA7200 @ 200 WPC, has autoformers, integrated
3) MC302 @ 300 WPC, has autorormers, seperates


For the MA5300, I'm concerned that there isn't enough headroom. If I even get close to the 94W peak, it means that I'm pushing the amp to the max, so I'd probably be operating in an area of reduced sonic performance since it's being stressed. Is this a correct assumption?

The MA7200 looks like it'll leave plenty of headroom and it also has (for better or worse) autoformers which seems to be what puts the "mac sound" in macs.

The MC302 is just sexy as heck... but is there any realistic gain with my current set up that I would get by buying one of these? Or is it so much overkill that I am just throwing money away at this point?
eisenb11

Showing 1 response by millercarbon

millercarbon's avatar
millercarbon
12,531 posts
 
This is why my #1 speaker filter is 90dB. Never buy speakers less sensitive than 90dB. Anything less is the difference between being able to drive them well with any of scores of amps with as little as 50 wpc, and being stuck with speakers that force you to try and find a good sounding 200 wpc amp. Not a lot of those around. Certainly not anything normal people can afford.

Consequently my advice would be to look for better speakers. Being on a budget I would set my filter a bit higher, at least 92dB, and preferably more. Find some you like at 95dB and then you will be able to find low watt amps very affordable, that combined with your speakers will sound a whole lot better and for a lot less money.
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