12/10/2023 0 Comments Speaker stands for klipsch rp 600mThe Klipsch's horizontal dispersion (fig.5) is characterized by an even and well-controlled rolloff in the treble to the speaker's sides as the frequency increases. The grille reduces the tweeter's output by 1dB or so between 3 and 8kHz. I wasn't surprised, therefore, that HR found that the RP-600Ms "slightly emphasized the leading edges of notes." HR also wrote that he had "a slight preference" for the sound of the RP-600Ms with their grilles on. Despite the spatial averaging, the tweeter is still balanced a little too high in level. The Klipsch's farfield response has a slight lack of energy in the crossover region. Both drive-units are relatively flat in their passbands, but this graph suggests that the tweeter is a couple of dB higher in level than the woofer.įig.4 Klipsch RP-600M, anechoic response on tweeter axis at 50", averaged across 30° horizontal window and corrected for microphone response, with complex sum of nearfield woofer and port responses plotted below 300Hz. The woofer is crossed over to the tweeter (green trace) close to the specified 1.8kHz with what appear to be symmetrical, fourth-order acoustic slopes. As this resonance is low in level and the port fires to the rear, it will probably be inaudible. The port's nearfield response (red trace) peaks slightly lower in frequency, and its upper-frequency rolloff is disturbed by a peak at 700Hz. The blue trace in fig.3 shows the woofer's nearfield response, including a minimum-motion notch at this frequency ( ie, when the back pressure from the port resonance holds the cone stationary). The impedance-magnitude plot has a saddle centered on 48Hz, which implies that this is the tuning frequency of the flared port on the RP-600's rear panel. There is also a current-hungry combination of 5.3 ohms magnitude and ≤2° electrical phase angle (dotted trace) at 128Hz, which suggests that the RP-600M will work best with tube amplifiers when driven from their 4 ohm output-transformer taps.įig.2 Klipsch RP-600M, cumulative spectral-decay plot calculated from output of accelerometer fastened to center of sidewall (MLS driving voltage to speaker, 7.55V measurement bandwidth, 2kHz). The impedance is lower in the midrange and bass, with a minimum value of 3.5 ohms between 180 and 220Hz. Fig.1 shows that the RP-600M's impedance magnitude (solid trace) remains above 10 ohms for the entire treble, which means that in this region at least, the Klipsch is very efficient, the speaker drawing significantly less current from the partnering amplifier than would a nominal 8 ohm design. My estimate was much lower, at 89.6dB(B)/2.83V/m, though this is still higher than is typical for a small two-way speaker. I left the grille off for the measurements, The Klipsch's specified sensitivity is an extraordinarily high 96dB/2.83V/m. I love when that happens.I used DRA Labs' MLSSA system and a calibrated DPA 4006 microphone to measure the Klipsch Reference Premiere RP-600M's frequency response in the farfield, and an Earthworks QTC-40 mike for the nearfield responses. You just want to keep playing one more song, or even one more album. The Klipsch Reference Premiere 600M is a lot of fun, it's the sort of speaker that's hard to stop listening to. It's a lot more dynamically alive than the UB5s, that speaker is a power hungry beast, and even when it's mated with a potent amp it still won't match the RP 600Ms freewheeling dynamics. Stereo imaging isn't as precise or 3D holographic as the ELAC Uni-Fi UB5 speakers, the RP 600M sound is more diffuse, but still very open sounding. While they play loud with ease hushed late night sessions were still very exciting. The crack of a well recorded snare drum will make you jump, the RP 600M relishes dynamics like a dog on a bone. The speaker presents small and large scale dynamics with an ease that no similar sized speaker can muster. The bass isn't the deepest, but it's so darn nimble, never thick or muddy. Even so, I mostly listened sans sub, the RP 600M's bass definition and texture were so satisfying. The sub filled in the under-50Hz bass nicely, and then the RP 600M sounded like it had the muscle of a tower speaker. The RP 600M lacks some bottom end punch, so I added my trusty old PSB Alpha SubZero i subwoofer and that did the trick.
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