Al1 Posted November 2, 2006 Share Posted November 2, 2006 Hello All, Just a follow up. I had mentioned about the RB-75's I was thinking about purchasing that had cabinet damage. I've made the purchase but now found out that there was a clunking noise inside one of the speakers. It looks like the horn driver (magnet portion) has separated from the plastic front fascia. I've tied it back together and everything seems fine. A couple of questions for the experts: 1) Is there a way attach the horn to the fascia plastic? Recommendations? 2) There is a ~5-10db drop in SPL around the 110-125hz range (normal?) Is that the xover point from horn to woofer? 3) I have RF-7's as well and they seem to be more efficient than the RB-75. Is that normal? Shouldn't the RB-75 be better? Quote Link to comment Share on other sites More sharing options...
damonrpayne Posted November 2, 2006 Share Posted November 2, 2006 2) How are you measuring the frequency response of this speaker? Measured in an anechoic chamber I seriously doubt Klipsch would release any speaker that was +-5db, let alone 10db. If you are correct and the dip is in the 110-125hz range, that is absolutely an area where the culprit is likely your listening room and not the equipment. 3) if by efficiency you are taking about SPL @1w/m I would certainly expect the RF-7s to be more efficient. Quote Link to comment Share on other sites More sharing options...
Al1 Posted November 2, 2006 Author Share Posted November 2, 2006 2) I'm just eyeballing a RadioShack SPL meter and using the freq sweep on the AVIA HT DVD. Obviously I don't have an anechoic chamber and don't have verification beyond my ears and a cheap meter. I'll move the speakers to another room to verify, but so far, I'm not hearing as rich a sound coming from the RB-75's. (No measurement, just subjective thoughts)... I've also placed the speakers on top of a desk so that the horns are at about ear-level. Based on the return policy for demo/open products, I have 14 days to determine if I'm happy with the sound. Need help.. Its difficult to avoid clouding my opinions after seeing cabinet damage and rough handling on the speakers. Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted November 2, 2006 Share Posted November 2, 2006 The RB-75s are 97dB sensitive, RF-7s are 102dB sensitive. Why would you think that the RB-75s would be more sensitive? Quote Link to comment Share on other sites More sharing options...
PhilMays Posted November 2, 2006 Share Posted November 2, 2006 Not knowing what you paid is a hard judgement for others to help you with the return decision. To me if they are broken, return them. Quote Link to comment Share on other sites More sharing options...
Al1 Posted November 3, 2006 Author Share Posted November 3, 2006 I purchased a demo/open box and I have no problems with damage to aesthetics of the speaker. What I would like to know is whether the performance (audio fidelity) of the speaker has been damaged. 1 Quote Link to comment Share on other sites More sharing options...
WS65711 Posted November 3, 2006 Share Posted November 3, 2006 What I would like to know is whether the performance (audio fidelity) of the speaker has been damaged. I would have to say that the audio fidelity of the RB75 that has the magnet/driver structure clunking around inside has definitely been compromised. [] [] [] Quote Link to comment Share on other sites More sharing options...
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