What would suit the best ?

aft · 1st March 2009, 07:31 AM

Hi all,

I'm currently building my 3-ways loudspeaker (separate cabinet for bass and Medium+Tweeter) based on the following speakers
Scanspeak D2905, 18W/8545K00, 25W/8561 all are 8ohms nominal except the tweeter that is rated at 6Ohms.

The sensitivity of the loudspeaker is in the range of 88-89dB.

All this stuff is going to be installed in a 45 squaremeters room.

I have been looking during hours to the amplifier that would suit the best, reading post after post (learnt a lot bye the way)
but unfortunately I'm not yet at that stage !

My main concern is around power required, are the 10 watts of the F3 sufficient for example or shall I look to one of the more
powerfull aleph.

Other question is the importance of the dumping factor, Shall I look to a specific range, knowing that I'm listening to various
lounge music where bass can be quit strong !

I would really appreciate your advises
Thanks, Raoul

analog_sa · 1st March 2009, 08:10 AM

10W in a 45m2 room with average sensitivity speakers will allow you to listen to unaccompanied violin. Add a piano and it won't handle it too well

To achieve any realism with dynamic music in that room you'll be looking at more than 100W. Or at least i will.

Nelson Pass · 2nd March 2009, 12:45 AM

As a rule of thumb you can add the power of all three channels of
each side to decide if you have enough. 3 X 30 watts is going to
behave roughly as a 100 watt full range.

1st March 2009, 07:31 AM	#1
aft diyAudio Member Join Date: Oct 2008	What would suit the best ? Hi all, I'm currently building my 3-ways loudspeaker (separate cabinet for bass and Medium+Tweeter) based on the following speakers Scanspeak D2905, 18W/8545K00, 25W/8561 all are 8ohms nominal except the tweeter that is rated at 6Ohms. The sensitivity of the loudspeaker is in the range of 88-89dB. All this stuff is going to be installed in a 45 squaremeters room. I have been looking during hours to the amplifier that would suit the best, reading post after post (learnt a lot bye the way) but unfortunately I'm not yet at that stage ! My main concern is around power required, are the 10 watts of the F3 sufficient for example or shall I look to one of the more powerfull aleph. Other question is the importance of the dumping factor, Shall I look to a specific range, knowing that I'm listening to various lounge music where bass can be quit strong ! I would really appreciate your advises Thanks, Raoul

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1st March 2009, 08:10 AM	#2
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	10W in a 45m2 room with average sensitivity speakers will allow you to listen to unaccompanied violin. Add a piano and it won't handle it too well To achieve any realism with dynamic music in that room you'll be looking at more than 100W. Or at least i will.

2nd March 2009, 12:45 AM	#3
Nelson Pass The one and only Join Date: Mar 2001	As a rule of thumb you can add the power of all three channels of each side to decide if you have enough. 3 X 30 watts is going to behave roughly as a 100 watt full range.