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 Forum index » How-tos » Production - engineering/mixing
Wattage for nearfield monitoring
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dewdrop_world



Joined: Aug 28, 2006
Posts: 858
Location: Guangzhou, China
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PostPosted: Mon Sep 13, 2010 6:54 am    Post subject: Wattage for nearfield monitoring Reply with quote  Mark this post and the followings unread

Hey -- haven't been around much lately.

Maybe quick question -- I have an old pair of Tannoy PBM 5 II's, but can't find anything online about their wattage rating. Lots of stuff about PBM 6.5, but the 5 II's are just old enough that the only thing I could find is an old sound on sound review (basically favorable, but no technical specs).

I'm looking at an amp for near field monitoring rated at 30 W. I'm fairly sure this is sufficient but my partner wants reassurance before plunking down 400 RMB (in China -- where there is no such thing as a return policy -- or rather, there is -- the policy is "no returns").

Crownaudio.com says:

Quote:
Total amplifier power required in various applications
• Nearfield monitoring: 25 W for 85 dB SPL average (with 15 dB peaks), 250 W for 95 dB SPL average (with 15 dB peaks)


Doesn't hurt to ask if anybody disagrees based on practical experience.

Buying soon -- thanks in advance for any advice.

James

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BrassTeacher



Joined: Aug 24, 2010
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PostPosted: Wed Sep 15, 2010 11:18 am    Post subject: Reply with quote  Mark this post and the followings unread

I would imagine 30W would be plenty. I have a pair of KEF Reference 101 speakers, which are basically an LS3/5a with a flatter crossover. I run a 25W NAD amp into them, and they can more than fill up a large room even.

It seems counterintuitive, but an amp that is underpowered can damage speakers easier than an amp that is overpowered. An amp with too much power will simply make the speakers distort when the volume is too much, assuming that you haven't severely overloaded them.

However, an amp that is underpowered will clip badly when the speakers are drawing more current than the amp can put out. If allowed to continue, the tweeters are at a big risk for overheating and failing due to a burnt out voice coil.
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dewdrop_world



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PostPosted: Fri Sep 17, 2010 4:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

Cool, thanks. The amp is on order - 400 RMB, about 60 and change US.
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dewdrop_world



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PostPosted: Sun Sep 19, 2010 5:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

Arrived the other day, sounds great! It fills my studio space with the volume knob down at about 1/4 Smile
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BrassTeacher



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PostPosted: Sun Sep 19, 2010 7:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

dewdrop_world wrote:
Arrived the other day, sounds great! It fills my studio space with the volume knob down at about 1/4 Smile


Cool! Glad it worked out.

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