henry4841

But as cheap as you will find. Heatsinks for class A are not cheap. They have to dissipate a lot of heat even for 25 to 30 watts.

Hard to bet the price at the diyaudio store on a sufficient chassis for class A.

Engineers are not cheap. They have to be paid whether what they are working on works or not. Hench research of R&D.

I am in your camp. Heritage loves tubes.

No, just browsing what Amazon has for sale. All my tube amps are ones I built myself. Honestly do not know how many I have right now.

Has anyone any experience with this amplifier. Stellar reviews on Amazon.

Dave I doubt anyone on this forum has tried the experiment you are talking about. The way I would go about it though would be to use an adjustable L-pad and measure the amount of resistance you need then set the adjustable wire wound resistors to the same value. Calculate the parallel resistor using an L-pad calculator. A multimeter will help dialing in the adjustable wire wound resistors. I do not understand the reasoning behind what you are trying but look forward to the results. I have always done it like Curious George describes when I was experimenting with crossovers. In my present main system I found I need to use discrete resistors along with an adjustable L-pad to fine tune and have enough attenuation for the high efficiency drivers I am using. I could take out the adjustable L-pad and put in higher value discrete resistors but I honestly see no reason to. Nelson Pass designed a crossover for a pair of JBL L200's and used adjustable L-pads so I figure he does not consider them to drift enough to be a problem. Good enough for him then good enough for me. There are many laymen on this forum with no experience in the electronic field that will say how terrible L-pads are. I just ignore them. There is always going to be critics on most every posting on a social media forum.

I'm with Captain. It has always been amazing for me the discussion about capacitors that goes on in this forum. Two thin plates separated by some type of material. Every time someone mentions purchasing some old speakers many chime in saying the caps need replacing when in reality most are just fine. That being said I do believe I can perceive subtle differences in some capacitors especially in the high frequencies. Probably more to do with the amount of high frequency roll off especially when it comes to horns that tend to be bright. Most in the electronic field will pick a good quality capacitor at the best price. The engineers at Klipsch are using the old tried and true polyester capacitors over the more modern polypropylene in their products and many are praising them now on this forum. One would think the engineers know more then a layman. That is the sensible ones.

No one has transformers like McIntosh does. They are considered the best of the best but Mc amplifiers are real pricy desirably so. I like Chinese offerings in tube amplifiers but I would be reluctant to pay the offering price of the Mc clone. Seems to be one would be paying extra of the Mc look. There are other Chinese PP tube amplifiers that have excellent reviews for less money than the price of this one. This is not to say it may sound great but it is not going to be a Mc 275 just because it may look like one.

If I were not a diy'er, of which I am with many tube amplifier builds, I would look at some of the Chinese offerings. Many have great reviews on youtube and other sources. But then I am on a limited budget. Check Amazon searching for tube audio amplifiers. I personally prefer single ended but you may prefer a push pull one. Really depends on the type of music you listen to.

Not to be discouraging but I do not think the electronics would be worth the effort. Especially with the cost technicians charge these days and the improvements of SS components since those were built. Money better spent on a decent tube amplifier is what I would consider.

Painting black or white is one option. The other, veneering, requires talent or high expense. Definitely worth keeping for someone that cares more about sound then appearance.

Depending on how old it is you may have germanium transistor rather than silicon. Original Germanium transistors are getting rather hard to find. It could be switched over to silicon but it would have to be properly biased. If you happen to have a signal generator you could check to see if you have the same amount of signal coming from the switch. A switch is not that hard to replace.

Reviewers are saying this is the driver at Parts Express. They weigh 16.5lbs each. Owners of older Jubilees may want to upgrade. https://www.parts-express.com/Celestion-Axi2050-AxiPerodic-2-Wide-Bandwidth-Compression-Driver-4-Bolt-294-2142

Did the previous versions have the same huge Celestion driver as this new Jubilee or is something new?

All I can say are they sure are pretty. I will probably, most likely, never hear them but interesting being a Klipsch fan. Surely the ultimate speaker system IMHO.

More info.

Anyone purchased a pair yet? Only for those with deep pockets, $3,4998. plus tax. Bet they sound fantastic in a large room.

No way would I take them apart. Just trying to show what a deal you got. Back in the early days of HiFi it was common to purchase just the parts to assemble a speaker system. It appears you have one of the best.

Mosfets of which most of the Firstwatt offerings use have curves that are like pentode tubes so they have a tube like character but for a SET sound you will want one of the SIT offerings from Firstwatt. That and the fact that all of Firstwatt amplifiers are run in class A.

https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=JBL+LE85&_sacat=0 Just some asking prices on Ebay for the drivers alone. The horns and woofers are bringing big money on Ebay as well. I just knew from the build quality of those speakers there was gold inside as well. The electronics are a dream for a diy to restore but not an easy task without schematics. Not worth a lot but they were just gravy and free. I bet the speakers sound great. Top quality components in their day. There is a lot of love in those speakers from the builder as well. Lucky guy.

$400 Heresy's? Good luck finding them for that price. There is a diy project called the econowave that many have built and praise the sound. Still say fantastic deal for $200. If Electrovoice kit makes it more desirable in my opinion.

This is a Klipsch forum so naturally most are going to say no, look for Klipsch. IMHO they look like a steal to me if they sound like they look. Obviously if they are diy someone did an excellent job building them and sourcing parts. Like billybob I am very interested in the horn and driver used. For someone without speakers I would say take a listen and then decide. Not a lot of money lost considering the cost of everything these days. I bet they sound really good. Good as Heresy's probably not but probably good enough for most. We are talking $200 guys.

I have never heard of Oliver Sayes but a quick google found this article. https://cheaptubeaudio.blogspot.com/2020/05/amp-builder-spotlight-lance-cochrane.html Looks great.