Flevoman Posted December 16, 2023 Share Posted December 16, 2023 I'm currently pondering the best approach to address my issue. It could be through a lengthy detailed text or perhaps a shortcut. I'll opt for the shortcut. The LaScala 1 was known for its cabinet resonance. I believe this was addressed by placing a wedge in the bass cabinet to reduce the resonance. The LaScala II and the AL-5 have thicker walls. Is the general assumption that this completely eliminates the resonance? Or is there still some resonance present, and could, for example, a wedge in the bass cabinet still provide improvement? Quote Link to comment Share on other sites More sharing options...
Dave MacKay Posted December 16, 2023 Share Posted December 16, 2023 You might want to pose this question on the Klipsch Korner on Audiokarma. 2 Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 16, 2023 Share Posted December 16, 2023 who cares about the Korner or AK 1 2 Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 16, 2023 Share Posted December 16, 2023 12 hours ago, Flevoman said: is there resonance No 1 Quote Link to comment Share on other sites More sharing options...
Tom05 Posted December 16, 2023 Share Posted December 16, 2023 I can measure a narrow peak at about 160 hz , but is it objectionable? , or is it simply bothersome to be aware of a narrow blip on a frequency response chart? Relax and enjoy the music. These speakers have been overly scrutinized for years by those that cannot comprehend their extraordinary performance. These speakers are in a class of their own , not to be confused with ordinary cone speakers. Lascala is an exceptional speaker , but if your looking for a speaker with ruler flat frequency response , look elsewhere 🤓 7 Quote Link to comment Share on other sites More sharing options...
Shakeydeal Posted December 16, 2023 Share Posted December 16, 2023 Sometimes I think I hear something, but it’s very benign. I know it’s greatly improved over earlier versions. It’s not enough for me to worry about and I just enjoy the music. 2 Quote Link to comment Share on other sites More sharing options...
nickyboy6100 Posted December 16, 2023 Share Posted December 16, 2023 My first pair of La Scala’s had the braces. I’ve had 4-5 pair of original’s since without braces and haven’t heard the resonance issue. 2 Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 16, 2023 Share Posted December 16, 2023 4 hours ago, OO1 said: who cares about the Korner or AK You get more friendly help there. You can also get bad advice there, but this forum isn't exempt from that either. 4 4 Quote Link to comment Share on other sites More sharing options...
Flevoman Posted December 16, 2023 Author Share Posted December 16, 2023 Thanks for the replys When I switched from the CW4 to the AL-5, there were a few points that bothered me. Now, after trying various amps, adjusting placement, and making other tweaks, most of the issues have disappeared—enough for me to enjoy these speakers. However, there's one point of annoyance I would really like to eliminate or at least reduce significantly. It's a kind of resonance that I can hear in the mid-bass with certain tracks. It sounds like cabinet resonance, but honestly, I have no idea where it might be coming from. Midhorn? Bass cabinet? Or something else? Due to some factors (which would make this a longer story if I were to mention them all), I suspect it might be a form of cabinet resonance. Hence, my question. But from what I gather, the AL-5 should be free from this, according to feedback. Quote Link to comment Share on other sites More sharing options...
Flevoman Posted December 16, 2023 Author Share Posted December 16, 2023 4 hours ago, Dave MacKay said: You might want to pose this question on the Klipsch Korner on Audiokarma. Found it 👍🏻 2 Quote Link to comment Share on other sites More sharing options...
Shakeydeal Posted December 16, 2023 Share Posted December 16, 2023 I have found that some amplifiers can induce a resonance in the upper bass. I had a Sonic Frontiers Power 2 tube amp years ago that did just that. As soon as I got rid of that amp, the problem disappeared entirely. Not saying that this is your issue, but have you heard it on more than one amp? 2 Quote Link to comment Share on other sites More sharing options...
Tom05 Posted December 16, 2023 Share Posted December 16, 2023 If you think resonance is a problem , try clamping on a stiffener to the suspected area , like the outside horn edge for example , then compare results , test tones will be helpful . This way you can see for yourself any positive change ,Good luck 🤓 1 Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted December 16, 2023 Share Posted December 16, 2023 On 12/16/2023 at 6:46 AM, Flevoman said: I'm currently pondering the best approach to address my issue. It could be through a lengthy detailed text or perhaps a shortcut. I'll opt for the shortcut. The LaScala 1 was known for its cabinet resonance. I believe this was addressed by placing a wedge in the bass cabinet to reduce the resonance. The LaScala II and the AL-5 have thicker walls. Is the general assumption that this completely eliminates the resonance? Or is there still some resonance present, and could, for example, a wedge in the bass cabinet still provide improvement? You can see the measurements made by Stereophile here and as can be seen there are some mechanical(sidewall) and acoustical resonances of it’s woofer horn in the 100Hz - 200Hz region that we need to be aware of. https://www.stereophile.com/content/klipsch-la-scala-al5-loudspeaker-measurements They show using a plastic-tape accelerometer attached to the center of the woofer horn’s sidewall (3) High Q resonances at (~125Hz, ~250Hz, ~500Hz). What signal type and level was used to produce the results aren’t mentioned in the article so how this relates to reproducing music isn’t fully clear for me. How audible and frequent this is in normal use while listening to music is questionable because any potential resonance becoming audible will depend on the exciting frequencies being present in the music and at what amplitude level and length of time applied to the resonance for it to develop it’s maximum audible effect. Regardless of all the causes there is an apparent peak of up to +7db in the frequency response of the La Scala woofer-horn in the region between (100Hz - 200Hz) of it’s spectrum that we should be aware of. IMHO based on experiences having owned both the original La Scala model as well a the La Scala AL5 is that it is very important to pay attention to how we position the speaker relative to (SBIR) Speaker Boundary Interference Response and Room Modes. What we must avoid is any additional SPL increase in this region of (100Hz - 200Hz) due to reinforcement from the Speaker-Boundary distance and Room Mode Coupling. IMHO if proper attention is given to the speaker’s location by again avoiding any additional reinforcement in the (100Hz - 200Hz region) then the La Scala Sidewall resonance potential hasn’t been an audible issue for me when listening to music. miketn 6 Quote Link to comment Share on other sites More sharing options...
Tom05 Posted December 16, 2023 Share Posted December 16, 2023 Good point , speaker position will have an effect on bass response. 1 Quote Link to comment Share on other sites More sharing options...
Dave MacKay Posted December 16, 2023 Share Posted December 16, 2023 9 hours ago, OO1 said: who cares about the Korner or AK Now, now … you’re better than that. You choose to play in this sandbox, but some find it restrictive. Live and let live. 2 Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 16, 2023 Share Posted December 16, 2023 I fail to see what AK has to do with LS1 resonance , and the question was not in any way restrictive , 1 Quote Link to comment Share on other sites More sharing options...
Shakeydeal Posted December 16, 2023 Share Posted December 16, 2023 18 minutes ago, OO1 said: I fail to see what AK has to do with LS1 resonance , and the question was not in any way restrictive , It’s not the question that’s restrictive, but the reception. 4 1 Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted December 17, 2023 Klipsch Employees Share Posted December 17, 2023 12 hours ago, Flevoman said: I'm currently pondering the best approach to address my issue. It could be through a lengthy detailed text or perhaps a shortcut. I'll opt for the shortcut. The LaScala 1 was known for its cabinet resonance. I believe this was addressed by placing a wedge in the bass cabinet to reduce the resonance. The LaScala II and the AL-5 have thicker walls. Is the general assumption that this completely eliminates the resonance? Or is there still some resonance present, and could, for example, a wedge in the bass cabinet still provide improvement? Known for its resonance? Really? 2 1 Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 17, 2023 Share Posted December 17, 2023 On 12/16/2023 at 6:31 PM, OO1 said: I fail to see what AK has to do with LS1 resonance , and the question was not in any way restrictive , A couple observations... There are some really,really smart people there, including a lot of Klipscheads. IIRC, the resonance in the LS is partly to do with the parallel doghouse and cabinet side walls. The Peavey FH-1 doesn't have that issue. Probably something they learned in designing them after the La Scala came out. -- Now, I've been here 10 years longer than you... doesn't mean I know more, doesn't mean I know less. I'm here for all the friends I've met, and to pass on what real knowledge I've gained, hopefully to counter what is sometimes wrong information. It looks like the majority of posts are in the lounge section, which is mostly us being friends, not helping out with Klipsch questions. Those posts have really tapered off in the past few months. 3 Quote Link to comment Share on other sites More sharing options...
Schu Posted December 17, 2023 Share Posted December 17, 2023 Everything resonates to some extent... even my teeth resonate. 4 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.