Unitiqute 2 & NAP100 into 4 ohm speakers

Posted by: Paulq on 20 December 2015

Hi

I have a UQ2 and NAP 100 with Monitor Audio Silver1s at the moment which are 8 ohm speakers and work well. However I am moving the system to a bigger room and would like some floor standers, ideally MA Silver 8s which are 4 ohm speakers at 90db. 

Would the UQ2 and NAP 100 combo be adequate to drive them at normal levels?

Thank you. 

Posted on: 20 December 2015 by hafler3o

Yes.

Posted on: 20 December 2015 by Paulq

Thanks I wasn't sure. This wpc vs ohms still confuses me ��

Posted on: 20 December 2015 by hafler3o

You could have a bit of fun and see what they sound like bi-amped.

A NAP100 is a very high quality 'small' amplifier (small by the standards of Naim's range) Designing it to not work with a speaker in the 4 ohm range would limit sales somewhat. I'm sure 'adequate' and 'normal level' listening can be achieved.

Posted on: 20 December 2015 by DUPREE
Paulq posted:

Hi

I have a UQ2 and NAP 100 with Monitor Audio Silver1s at the moment which are 8 ohm speakers and work well. However I am moving the system to a bigger room and would like some floor standers, ideally MA Silver 8s which are 4 ohm speakers at 90db. 

Would the UQ2 and NAP 100 combo be adequate to drive them at normal levels?

Thank you. 

I don't see how this would be a problem. I have a NAP-100 driving Linn Majik 140's and it does a super job. They are 4 Ohm and I believe less sensitive than the MA Silver (88db). The 100 can usually punch above it's weight, I think it is a great little amp - mine does not feel particularly hot when listening and decent volume. I can't see where you would have a problem unless you are totally cranking it. I sometimes have a tendendancy to go pretty loud and It has never ever ever been a problem.

Posted on: 20 December 2015 by Paulq

Thanks both.  I do already bi-amp the Silver 1's and have raved about that setup for quite some time.  I am a huge fan of both Naim and MA gear and think they pair really well hence, when I saw the chance to get the MA Silver 8s for about £450 less than RRP I thought 'I can't help myself '.  

Then I just had an awful thought that the UQ and NAP100 may not be enough but you have allayed those fears so thank you.

Posted on: 20 December 2015 by DUPREE
Paulq posted:

Thanks both.  I do already bi-amp the Silver 1's and have raved about that setup for quite some time.  I am a huge fan of both Naim and MA gear and think they pair really well hence, when I saw the chance to get the MA Silver 8s for about £450 less than RRP I thought 'I can't help myself '.  

Then I just had an awful thought that the UQ and NAP100 may not be enough but you have allayed those fears so thank you.

Yeah, I am not bi-amping and they are certainly as efficient and probably similar in load to Majik 140's. I think you will be very pleasantly surprised.

Posted on: 20 December 2015 by Paulq

Hope so.  Pre Naim I had the Majik 140s and largely found them to be excellent but just a little to lean on the bass to me, hence the reason I listened to many and ended up with MA.

Good to know I won't have any power issues.  If I had then I would have rushed out and bought that 272/250 combo I long for......but can't afford :-). 

Posted on: 20 December 2015 by fred40

Friend of mine has an unityqute and a Nap 100 and 4 ohm speakers.( Mb Quart). No problem at all. No signs of any stress. 

Posted on: 21 December 2015 by catalinmetal

first thing first: there is no such thing as an 8 ohm speaker, nor an 4 ohm speaker.

the impedance of the speaker is not constant, but frequency dependent. you can have speakers that have the "rated" 8 ohm impedance, but they could drop to as low as 2 or 1 ohm at certain frequencies, and this is where a lower powered or lower design amp can have trouble with, since the speaker will need to draw more current than the final stage of the amp can provide.

i think that OP's main concern was actually if the sensitivity of the speaker is good for matching with the NAP100. sensitivity is the rated sound pressure in dB provided in an anechoic (deaf) room, with 1W (or 2,83V) input signal.

consider that for double the output as sound pressure you need 10 times the rated amp power output, i think this was the OP's concern.

i don't think Naim has ever designed an amp (lately) with low impedance unable capabilities, in fact that's the main key to Naim design, they have lower power output but deliver strong currents when needed.

so the advice is to check the sensitivity of the speakers you're familiar with, and if your new intended speakers have equal or higher value for this parameter, then you should have at least the same results as far as sound pressure goes.

Posted on: 21 December 2015 by Huge

The bare UQ2 may well struggle to drive quite a few types of 4Ω (nominal) speakers, but the NAP 100 is specifically designed to drive more difficult loads (more so than the inbuilt power amps of the Uniti series, with the possible exception of the SU).

90dB/W is a fairly high sensitivity, so the maximum volume will also still be quite reasonable, in fact they will nominally go slightly louder than your current speakers (3dB louder).