[Jensen Oil caps in Cornwall Crossover impressions]

And this years Golden Shovel award goes to ... Jmm 😀, congratulations.

[“Whitening” birch CBR to mimic the modern maple]

Don't  know if old wood but "fresh"  brich is rather white, probably even whiter than maple. Fine sanded it has almost pearly look.

[Topping PA5 is incredible.]

3 hours ago, ClaudeJ1 said:

Whether these guys buy one or not will not change my life & audio happiness one iota.

Unless yours will breake too:)

 

Any way mine arrived. Didn't hand a time to unpack it. But if it will confirm it's value, I'll probably buy 3 more.

[Topping PA5 is incredible.]

So if user uses this amp close to it,s  maximum specs and it brakes it's stupid user fault? 

This is design fault. They wanted to hide fppb circut topology under wrongly designed for temperatur dispation box period.

Nowhere in the manual there is notice that you should use it only with high efficiency speakers and with maximum 5w power.

 

[Topping PA5 is incredible.]

7 hours ago, ClaudeJ1 said:

I own 3 of the original an 1 of the V II for over 2 years. Never a single issue with horns. I NEVER turn them off, only the Pre amp an source get turned off. Never Blame the Product on what might Be id10t users.

I was never repairing any of my cars  on warranty. Conclusion is: cars never brake on warranty, only users brake them?

 

[Topping PA5 is incredible.]

The problem is not in "power" part but in feedback circut, users where raising heating issues on that part even on standbay.

Saying that I just ordered PA5 II to hear what the fuzz is all about.

[heresy h 700 info]

Check if drivers are same type in each box (assuming pictures show internals of single speaker)

For sure you can check resistance of each driver with omometer. I if any driver is dad you should actually be able to hear it but if you are not familiar with Heresies or in heat of negotiations you can miss it.

[Class D amps]

For the noise figures this looks much better.

[Advice needed: MC cartridge output vs. preamp sensitivity]

9 hours ago, pnort43 said:

My preamp, on MC, has a sensitivity of 6.8 mV

Are you sure? I looks more like MM sensitivity not an MC. For most vintage MM stages it's usually around 2.5mV. Do you have gain parameter for this pre? What pre is that?

[Class D amps]

Ok, Thanks. I'm running mine on six channel Rotel RB-976mk2 but I'm ready for the change.

 

For noise figures (and thd) I was looking here

 

Aiyima A07

 

audiosciencereview 1

 

Topping PA3

 

audiosciencereview 2

 

Topping PA5 II

 

audiosciencereview 3

 

 

 

[Class D amps]

8 hours ago, geezin' said:

My Topping PA3s is dead silent with my Heresy 1

From mesurements it looks worse then Aiyima. Maybe it's matter of La Scalas higher efficiency.

[Class D amps]

As I would need four of them so Benchmark is way out of my budget range. I was looking on Topping RA3 for a moment but then looks like they have huge failing rate.

 

PA5 II looks promising, and they fixed with it issue which was in RA3.

[Class D amps]

8 hours ago, Dave MacKay said:

Using the stock power supplies I am unable to hear any noise.

Ok but at listening point or ear close to the driver?

[Class D amps]

1 hour ago, Invidiosulus said:

I’m running three Aiyima AO7 class D amps on my LaScalas

What is noise level on tweeters and squakers with those?

[Chief Bonehead Class Spring 2024 - New Iterations of the La Scala and Klipschorn Coming]

  

On 3/11/2024 at 7:55 PM, jjptkd said:

All you need is 6 channels of amplification, I don't see why you couldn't accomplish this with a single 6 or 7 channel amplifier. 

 

 

And to save yourself additional trouble of adjusting levels it's better to use 6 identical channels or all same amplifiers (3 stereo).

[KG4 Restoration... Done!]

On 11/12/2023 at 12:40 AM, Ceptorman said:

#1 

It has a richer look to it.

My vote is #3.

 

Danish oil can be applied in multiple coats. More coats more glossy and "richer" effect it will have.

[Troubleshooting La Scala II]

8 hours ago, Schu said:

what the heck are these?

 

 

Those are tweeters but not for the La Scala

 

https://reconingspeakers.com/products-page/klipsch-rf82-rf62-rb81-rb61-rs62-sii-tweeter/

 

And for the rest of your issues, pictures (of backs and disassembled backs) will tell much more than the description

[Addressing high-end “grain” in my vintage Klipschorns]

As this is no longer modifications forum and mostly restorations so I would say.

Did you heard KHorns anywhere and you know they are off? For a start I would play some time and freeze some drastic mods.

Of course would be good to check if you have original drivers inside. People (including me) got those speakers with mixed tweeters (round and square version) or could be case when diaphragm of one was replaced (after some failure) with some poor quality aftermarket one.

 

1.  Room treatment is always welcome regardless of speakers

2. Try full solid state setup, skip tube preamp for some tests.

3. Leave midrange alone, this is really nice driver. If it has black/plastic cap so it's K55M. In this case test if this cap is not loose. There where cases when glue was bad on those and vocals sounded strange.

4. As AK-2 and AK-3 are not so different when it comes to tweeter, update squeaker and tweeter capacitors to mylar kind. Probably you could convert but then you will need new coil for midrange part. Not sure if we have DCR of it documented in here.

 

Then play them more to learn how they sound.

If this not enough for you then ask question on Klipsch Korner.

[Klipsch Heritage Jubilee vs. Underground Jubilee Upgrade]

On 11/2/2023 at 11:31 PM, KT88 said:

I can imagine that it could make a positive effect. But this way the UJ become more and more beautiful, and eventually my dear wife leaves me.🙄

Ok so pros. And are there any cons?

[Klipschorn A Crossovers?!]

So it's k55m and originally it came with some version of ak- crossover

Is ot worth to go back to ak-3? I don't know. But this midrange was not usually used with a or aa. And this A crossover is original or also upgraded to non Klipsch parts?

[Do I need to replace my diaphragms in all my horns for my 1980 LaScala's?]

What do you meant by upgraded x-over? What you exactly did.

 

Why did you replaced woofers?

 

Before "immediately" anything I would first listen to them to learn how they sound.

[Where are the "new" Jubilees?]

Do we know if this gain is controlled in analog or digital domain?

[Where are the "new" Jubilees?]

1 hour ago, MMurg said:

They are gain controls to match the gain when different amplifiers are used for HF and LF.

 

Ok so my mistake I have assumed that HF means HF and not everything above the lows.

So I would say they are not needed as basically any amp (even power amps) have attenuator knob and you can just attenuate "louder" one.

[Klipschorn A Crossovers?!]

On 10/29/2023 at 7:54 PM, Erivera1990 said:

I was under the impression Khorns should use ak-3 crossovers.

Which midrange driver you have? V with springs, V solder lugs or M?

Did you also got old/original tweeters or replaced only?

Maybe easier is to post some pictures of the stuff?

[Where are the "new" Jubilees?]

1 hour ago, Flevoman said:

I think I'll request a listening session at my hi-fi store after all.

Sure that is a good idea especially if they are close. Exhibitions like that are not best places for critical listening sessions.

And for systems where you have possibilities for adjustments on one hand that is great tool on the other hand it gives you possibility to "break" something really bad. For KHorns you cannot adjust anything and they were great with deep, firm, snapy bass. And Jubilees even on youtube sessions, trough some random microphone and headphones, they sound interesting so I assume properly set up they should be great.

 

I guess great power comes with great responsibility.