agedhorse

For 1/4" speaker applications, use TS (tip-sleeve), do not use TRS cables because of the potential for miswiring of the ring which would short to the sleeve in some types of jacks.

I don't know, I didn't design the amp.

Designer's choice.

Have you looked at the owner’s manual to see how it’s supposed to work?

There, I fixed it for you Paul

Exactly right, colloquialisms across the pond go both ways and I didn't want to leave out either the northeast or the south (easterly), but I probably should have thrown in a "cool man" or "dude" or two for the west coast

What exactly are you having difficulties with?

Why is it that folks who clearly do not understand something feel they are qualified to accuse others of something that they do not even understand? There are SOME manufacturers who use optimistic power metrics when rating their amps, they are almost always manufacturers offering product at the lower levels of performance and budget, resulting in their need to use metrics that have larger numbers for marketing purposes (which works very well when the customer doesn't understand). There are also many manufacturers that do not feel the need to do so, they clearly state the power based on Watts (RMS) and at whatever THD the power is measured at. These manufacturers are generally marketing towards players who understand more about gear, and are looking for performance first, with cost as a secondary concern. Why is there a particular need to be rude here? Have a wicked pissah day y'all.

He was a great songwriter but in his later years both his playing and singing suffered. I worked with him several times as he was winding down his touring, people bought tickets more for the stories he told and his legend status than anything else. He is also a great guy to work with and his personality was an inviting aspect to his show.

No, not all amp manufacturers are more guilty of this. Don’t accuse others of something you don’t yet understand.

No, the amp is rated for a 4 ohm minimum load in bridged mode.

Yes, this will work fine, the TS plug will ground reference the transformer driven output. Be sure the other plug can not come in contact with anything.

DeOxit D-5 has just the right amount of lubricant for rotary pots. F5 has too much, but works better with linear pots. TINY amount only.

Use the tiniest amount possible, less is more. If the pot is sealed, it must be replaced.

Yes, that would work as long as the ring is tied to the sleeve at the TS end. The TS-TS cable does that for you automatically. This applies specifically to transformer driven (floating) balanced outputs into an unbalanced input. The Rane notes contain good information, but you really need to understand that a transformer output is fundamentally different from an active driven balanced output. The necessary conditions are different.

Yes.

If you are feeding a balanced input, you must use TRS on the amp’s end but if you are feeding a unbalanced input, you will need to use a TS cable which automatically grounds the ring (to the sleeve)

On balanced outputs that are transformer driven (possible with this amp if the signal is taken from the secondary of the output transformer), a TRS will not work if the ring terminal on the input jack on the amp of the amp is not grounded. It depends on the type of input jack, and the way it is wired into the circuit.

Happy to do so ‘ol man!

The UK often uses a different type of branch circuit than we do in the states. A ring type branch circuit is fed from both ends and even if fused at 10A at each end will result in 20A @240V under a fault condition. The fuse in the plug body is the additional protection for a fault occurring beyond the receptacle.

Switches are different than pots. The less you screw with pots, the longer they typically last. I don’t have much experience with Servisol, but it must contain a small amount of sliding contact lube. On solid state amps built within the last 40 years, the life expectancy of caps is at least 40 years. My experience is if the amp is working properly and the fan is working as designed, you are probably better off leaving things alone. I see a fair number of amps “made broken” by well intentioned service attempts.

This is true under 2 conditions: 1. if one of the two cable is wired reverse polarity. 2. if each of the two speaker jacks is connected to a different power amp channel. This is common in some amps, using stereo or 2 channel power amps internally.

Interesting question. I am both a real engineer (electrical engineering degree) designing products for the bass, guitar and pro audio markets) as well as a FOH mixer (40 years in the international touring act market). I never have to worry about misuse of the word engineer. There are colloquial uses of words like engineer, but being an engineer (having graduated from an accredited engineering university program) carries with it certain assumptions if you operate as an engineer… that you know and follow the regulations in your industry, that you are licensed (for some work) that you carry certain insurance coverage (called professional liability coverage here in the states), you may be required to carry a bond, etc. In different parts of the audio industry, a FOH mixer may be called the BE (band engineer), FOH engineer, FOH guy, A-1, board op, etc. There are other terms for the monitor mixer like ME, A-2, monitor guy, monitor engineer. In other segments, you have playback techs, playback ops, dubber ops (from cinema days where mag film was unmarried from the picture in rush or daily screenings), sound op, etc. Of course different areas of the world have their own vernacular, and often it’s based on very loose translations. In the end, it generally doesn’t much matter what they are called so long as they are not representing themselves as a “real engineer” and doing things like signing documents as an “engineer” might.

If you swap the tweeter, be sure you include a suitable crossover (HPF) too.