Will this amp work with these KLH speakers

[JOV]

I have a pair of KLH Model Five speakers. I'm considering buying the Apollon Audio Hypex NCx500 ST NCOREx Stereo Amplifier: https://apollonaudio.com/product/hy...plifier/?attribute_cover-color=Black+Anodised together with RME DAC. Would that Hypex amp do the job for these speakers - have enough power? Thanks in advance.

 

[fpitas]

KLH Model Five loudspeaker Specifications

Sidebar 1: Specifications

www.stereophile.com

Recommended amplification: 20–200W

I think you'll have more than enough power.

 

[staticV3]

In a room with moderate room reinforcement, and at a listening distance of 2m, the Apollon Hypex NCx500 ST can drive the KLH Model Five to about 110dB SPL Peak.
Whether that qualifies as "doing the job", is for you to decide.

 

[fpitas]

In a room with moderate room reinforcement, and at a listening distance of 2m, the Apollon Hypex NCx500 ST can drive the KLH Model Five to about 110dB SPL Peak.
Whether that qualifies as "doing the job", is for you to decide.

Once he's deaf, mission accomplished?

 

[DanielT]

I have a pair of KLH Model Five speakers. I'm considering buying the Apollon Audio Hypex NCx500 ST NCOREx Stereo Amplifier: https://apollonaudio.com/product/hy...plifier/?attribute_cover-color=Black+Anodised together with RME DAC. Would that Hypex amp do the job for these speakers - have enough power? Thanks in advance.

No problem. Apollon Audio Hypex NCx500 ST NCOREx can handle slightly lower loads (Ohm) that your nice speakers seem to have:

"KLH specifies the Model Five's free-field sensitivity as 87.5dB/2.83V/m; my estimate was 87.9dB(B)/2.83V/m, which is within the margin of experimental error. The Model Five's impedance is specified as 6 ohms with a minimum magnitude of 3.5 ohms at 140Hz. Fig.1 was taken with the Acoustic Balance switch set to HI. The impedance magnitude lies between 4 and 8 ohms over most of the audioband, with a minimum value of 3.7 ohms at 122Hz. The electrical phase angle (dashed trace) is generally low, but the EPDR (footnote 1) drops below 2 ohms between 64Hz and 93Hz with a minimum value of 1.82 ohms at 74Hz. The Model Five must be used with amplifiers that don't have problems driving 4 ohms. Repeating the impedance measurement with the Acoustic Balance switch set to MID increased the impedance above 1kHz by 1 ohm; with it set to "LO," the impedance rose by another ohm in the treble."

KLH Model Five loudspeaker Measurements

Sidebar 3: Measurements I used DRA Labs' MLSSA system and a calibrated DPA 4006 microphone to measure the KLH Model Five's frequency response in the farfield. The manual doesn't specify a vertical listening axis, but with the loudspeaker sitting on its Slant Riser Base, it appears that the...

www.stereophile.com

Apollon NCx500ST Stereo Amplifier Review

This is a review and detailed measurements of the Apollon NCx500ST stereo class D amplifier based on Hypex NCOREx NCx500 modules. It was kindly drop shipped from the member and costs 1,090.00€ (US $1,168) with standard opamp. While the case is stamped aluminum, it is a heavily customized one...

audiosciencereview.com

Edit
If you are wondering how much power is needed:
(note the lower down in frequency the more power is needed, best to add)

How much power does an amplifier need with this type of range of dynamic music

Feel free to use this calculator. Add sensitivity to the speaker and then tell which effect you have chosen and why. Weigh in that you want some headroom. http://www.mh-audio.nl/Calculators/REAP.html You can select music from this list. Or something else, but in that case tell us how you...

audiosciencereview.com

 

[Deleted member 48726]

Once he's deaf, mission accomplished?

20 dB down from 110 is not making anyone deaf. Not right away..

On some music I can easily measure an LZpeak of way above 100 with dBA in the mid eighties.

 

[JOV]

Thank you guys. Looking forward to listen to this.