thefluffy

I am curious to see the distortion numbers on the rt-12d, the THX Subs, and the RSW-15. I have seen output comparisons against other subs, but I have not seen comparison of distortion measurements. Daniel

On second thought, the woofers on my Cornwalls are really moving with around 5 watt spikes. So, does anyone have any input on adjusting the meters possibly? Daniel

Any more input on the premature clipping? Daniel

That is a good question. I am curious about that as well. I believe the Cr-1000 is older than the 1020 but I am unable to confirm this. Daniel

Thanks for the input. I got this reciever from my Dad. He used until about 4 or 5 years ago. Until that point, the only problem it had was static on some of the nobs. He regularly used it with CDs as well as a turntable. Of course, he also made no claim that it had been serviced. I know for a fact it has been looked at by a technician in around 15 to 20 years. Daniel

Finally, several months later.... I have recieved my dad's CR-1020. I gave it a thorough cleaning. So far I am very pleased! Basically no static on the volume nob or other controls. I do have an interesting issue though. When I push the amp to around 30 watt spikes, I get a popping sound on the peaks. I experienced this one time and have kept the volume much lower since. But, I am unsure of what to think. On these spikes, the woofers on my cornwalls do have quite a bit of excursion, but I don't think they are bottoming out. My old amp would push the volume louder, to my ears. I have no means of measuring the SPL. As far as I can figure, either the VU/Watt meters are either a good bit off and 30 watt spikes are much more or they amp is clipping prematurely. Any suggestions on where to begin testing? Thanks in advance, Daniel

The Heresys are nice. However, they really need a sub. You will be missing a fair amount of content on the bottom end. If you can find Cornwalls, they are a better all around speaker than the Heresy. The Cornwalls are not picky about placement and do not need a subwoofer except for home theater setups. I cannot directly compare the I versus the II of the Cornwall or the Heresy. But, I can compare the Heresy II versus the Cornwall I. The tweeter in the second generation does have higher extension than the earlier version. However, I prefer the sound of the k-55 mid drivers, both the Atlas made and the EV made, over the later midrange drivers. Keep in mind, the drivers do vary between the Heresy II and the Cornwall II. In contrast, the midrange original sqwuaker and tweeters in the Heresy I and the Cornwall I are identical except the Horn lense on the sqwuaker. Daniel

This is an interesting comparison. I'm replying so I can find it when I get back home tomorrow.

Beautiful work indeed! There is some great information in here to.I will definitely reference this thread when I finally get around to finishing the refinishing of my '72 CW Decoratos. Daniel

Thats pretty cool. Now, if i could just figure out how to put a pair of Lascalas in the wall.... Daniel

Getting a hold of Bob would be my recommendation! Daniel

If you used the autotransformer that was in the original network, I don't believe it is adjustable. You could purchase an autotransformer from Bob to replace it. It would have different taps that provide different levels of attenuation. Daniel

Are you using Bob's networks or did you mod your own networks? If you bought one of Bob's networks, I believe you should be able to change the tap on the autotransformer that the squawker is attached to. I don't know the values of the different taps, but his website might tell you. Otherwise, it would require replacing the autotransformer with one that has different taps. Daniel

That k-69 sure is pretty. I can't afford Al's Trachorn.... let alone a 2" Throat Trachorn + a 2" driver. [:'(] But, I sure would love to hear the combo! Daniel

If I am not deployed come June, the wife and I would love to come! So, I suppose you could count us in. Daniel

I recently acquired copies of a few Beatles songs encoded in 24 bit/96 Khz FLAC files. These files were created by recording a vinyl into a computer and then converting them to FLAC. Unfortunately, I do not know the detaiIs of the equipment used. I have been comparing these to the copies I have on CD.I must say wow! I have never heard any of these songs on vinyl before. But, I am pleasantly surprised. The mids and highs are amazing. They are so crisp! The bass is more laid back on the FLAC files. But, the CD sounds like the FLAC with the bass turned up. Anyways, I was just so pleasantly surprised that I HAD to share. Thanks, Daniel

I am interested in the pictures from the website that is down as well.

If you read through the Dope from Hope papers, you will find mention that the early cornwalls were rear ported. PWK comments that it is the only major change to the speakers over the years. Granted, he wrote that some time ago. (30 years ago? I don't remember off the top of my head) I could digg the Dope from Hope papers out..... but Its a saturday and I'm lazy. But, I do remember PWK mentioning that. Daniel

Graham Nash "Songs for Beginners" I can't stop listening to it. Daniel

This is a very interesting website. A few of the plans are very interesting. Though, a few of the Horn Subs have very peaky/spiky frequency response. Anyone ever heard one of their designs? Daniel

The Cornscala is a great recommendation from what I've read about them. If you want to stay 100% true to a klipsch design, the Cornwall is probably the easiest to build with the best imaging and ease of placement (CORNer or WALL, right?) BTW if you are unfamiliar with the Cornscala, it is essentially a Cornwall with a k-400/401 horn form the Lascala/Khorn. Daniel

Thats an interesting bass horn. If you really wanted the horn dynamics and tight bass, that might be a good choice. You could compensate for the -10 db at 27 hz with EQ. Like you said, for home audio not movies. I've never heard one of these. I don't know how Cerwin Vegas bass horns sound. I know there home audio stuff sounds leaves alot to be desired. Daniel

Thanks for sharing! This was a great read. Daniel

You could consider replacing the caps on the xovers with some replacement caps from Bob Crites. Past that..... there are alot of ways you could go. The simplest being, replace that AL with an A or AA. ATM I have two sets of Lascalas in the house, one set has AAs with a k-55-v mid and the other has ALs with a k-55-m mid. The AAs sound much better than the ALs to me. Also, some people say that the K-55-m is the better midrange (compared to the more common k-55-v. I cannot tell a bit of difference, but that may just be the ALs holding the other set back. You could also look into the ALK networks. I'm not much of an expert on his, but alot of people praise his xovers. You could buy a set of Bob's CT125 tweeters and change the networks to cross over to the tweeters at 4500 hz. Honestly, there are alot of possibilities. I would suggest using the search function for lascala upgrades just to skim the surface. Daniel

18x24!!!! Wow, thats a mighty big xover there! Daniel