Chienmortbb

I tried a prototype cab some time ago that had on stage dispersion in mind, and the whole band said they have never heard me so well. They then proceeded list all my mistakes but hey, you cannot have everything.

That's democracy and why there are many cabs amps etc. I have used IEMs and to me it is a sterile, lifeless experience. I admit I could hear clearly but I felt I was not in the room. but then that is my attitude to reading music (probably as I am too old and too lazy to learn). I think we have to accept that its different stokes for different folks.

You will hardly hear the difference between 600 and 750 watts, in fact the extra 150 will probably cause more power compression in the drivers. producing heat rather than sound. Add a cabinet to the other side of the 1200 and you are getting much more.

Can you explain you reasoning? I agree that a bass through a HiFi is no good but HiFi speakers and MI speakers are two different things. AS for the expense.in some ways you are correct. The drivers needed are not cheap. A good compression driver/horn combination wills be over £100 on its own and most so called FRFR cabinets do not spend anywhere near that on the mids/top end. I have been using @steviedesigned BC112 MK3 for several years and it is ruler flat and loud. If I want colouration I can dial it in on a pedal or the amp's preamp.

I would worry about putting 800W through a driver in a carbon fibre cab but then I worry about carbon fibre as a material anyway.

Class D is not digital.

When I were lad and still a guitard, I went to a party in London. The road crew for Free were there and one of them was bemoaning the fact that they still used Marshall stacks rather than the more mobile Fender 2x12 combos. I told him what I have often told others. on a guitar, your amp and cab is your soundbox, it is part of your instrument. Paul Kossoff would not have sounded like Paul Kossoff without a 100 watt Marshall and 4x12 and an old Les Paul. Paul Kossoff through a Fender Twin with a Telecaster would have not been Free, more good for nothing. Ditto Hendrix, Clapton* Green et al. Move on a few years and I use an FRFR cabinet and would not use a valve amp, even if I could lift it OR afford a roadie. However part of my enjoyment is that trouser flapping moment from the @stevie designed BC112 MK3. Heft in spades from a solid state class D head. It is clearly now possible to get a good facsimile of your/my sound using a modeller and going straight to the Mixer, with foldback in ears for monitoring and if I were still playing the 6 string cheese slicer, no doubt I would be happy going down that route. However that feeling from the huge port on @stevie's design makes my trousers flap and my heart sing. My rig was used at jams for a while and the response from other bassists was always very positive. *Clapton's Strats are heavily modded to make them sound like a Les Paul.

Try putting one end of a guitar cable into the send socket and one end into the return socket, they often get corroded and the cable trick often proves it one way or another. If that does not work it could be the ICEPower module. They are incredibly reliable but even it the failure rate is 1 in 1000, someone gets that 1. The TH500 uses the 250ASX2 module and if that has gone, it is not cheap.

So are most of the girls that chucked me.

It occurs to me that I have not shown the full spec of the IRS500SMPS modules. I will post it start as well as it was an omission. The datasheet is being updated as we speak but here are the main points are shown below. Output Power: 542W at 4Ω, or 306W at 8Ω, with max. 0.1% THD+N, @230V supply voltage. Output Power: 525W at 4Ω, or 302W at 8Ω, with max. 0.1% THD+N, @120V supply voltage. Output Power on 2R load: 468W @ 1% THD+N, current limited, supplied at 230V or 120V mains voltage. Audiophile sound Quality: 0.01% THD+N at 378W at 4Ω or 198W at 8Ω @230V or @120V mains voltage. Maximum Output Power: 637W at 4Ω, or 357W at 8Ω, with max. 10% THD+N, @230V supply voltage. High efficiency: Up to 87.4% @500W on 4Ω, or up to 89.6% 300W at 8Ω with 230V mains supply voltage. Idle Power consumption: Muted: 2.5-3W; Un-Muted without Input Signal: ~8W. Full Protection set included: Short-circuit, over-current, over-temperature. Sensitivity: 1.5V for 500W on 4Ω or 1.64V for 300W on 8Ω rated output power. Amplifier gain is 29.81. Can be feed either with Balanced or Unbalanced Input signal, and a simple 3 pins Volume Potentiometer can be connected directly to the IRS500SMPS Audio Amplifier Module dedicated pins. Mute control, Status and Temperature feedback pins for controlling the amplifier status within the system. Compact size 150x50mm, and 37mm tall.

I am going to do soak testing when I can locate my dummy loads. I plans to test over a long period at 50 watts continuous and the diagram below shows how it will be wired, There will be no ancillary components or circuits, just the power amps. 50 watts has been chosen as amps are rarely driven flat out, all the time, and that is the power of my dummy loads at the moment.

I love them.

That's why he sounds so bad.

Tell someone with a classic car that it would look or drive better relic'd.

I decided to collect my thoughts by tidying the wiring diagram so here is Version 1.1. I have converted it to an image so it shows up on here. I have one more major decision to make, whether to include a level meter on the front. Nearly all power amps do and I have two options, one is a bar type display but that is 80mm long so would only fit horizontally. The other uses 5 standard LEDS and is more than good enough to see whether the amp is being over driven. I might get two prototype front panels made and then decide or I might just draw it and make a decision from the line drawings. Anyway here is the version 1.1 interconnection/wiring diagram.

Its possible I would have felt the same but I saw them live many times before buying the albums so it was the live performances that sold the band. They were probably just as pretentious as PG solo but by that time I was listening to music without Mary Jane's help.

Thinking of the old old days, I saw Genesis many times with Peter Gabriel 0he was singing, not with me) and the way he wove tales in between songs was magical. Solo he came across as a pretentious and talent less.

Yup one mistake is a mistake, two is jazz.

Many of us built the @stevie designed Basschat BC112 MK3 a few years ago. I have been using one for a few years and it is a great cabinet. If you were closer you could have tried mine. You could PM @stevie

Two cabs will give you more volume but a well designed single 12" cab will probably be all you need. Modern 12" drivers have the excursion, moving more air and with a properly designed crossover and high quality compression driver/horn combination you will probably never need another cab. Bill is right that no speaker can stand 800W continuous no matter what the manufacturers say and if a you get to even half the rated power, power compression will kick in. Beyma used to publish power compression graphs and in general half power continuous meant a power loss of about 1.5-2dB. it was closer to 4 dB at rated power. I have seen nothing to suggest other manufacturer's drivers are any different. Luckily as @Bill Fitzmaurice said, most of the time we are using a few watts. When you have cabinet with a sensitivity of say 98dB at 1W then 16 watts gets to 110dB and 128 watts gives 119db. That would be loud enough for most situations even allowing for power compression. Two cabs will give you more volume or allow you to to run them at a much lower volume. Many people run two cabs so they can hear themselves. The poor dispersion of bass drivers means that you can barely hear a cabinet around your feet. Adding a compression driver, well designed crossover and wide dispersion horn at the top of the cabinet, will allow you to hear your playing.

Surely Skid Row were a shite cover band?

This happened to me at our last gig. the strap button came out, first number second set. I did manage to catch the bass and after a few bars of bass silence, played like quasimodo to the end of the song. Unlike your bandmate I always have a multi-tool in the case and a after a short break managed a temporary repair. there were several lessons: Take a spare bass Check your equipment before leaving home. Practice catching a falling bass. There was no real trauma and I had forgotten it until I read your post.

I realise that fan noise is an anathema to many but like many things, fans are a necessary evil. On the plus side a fan can improve the cooling efficiency by up to 4 times, the downside is possible noise and the fact that fans are an electromechanical device. The best compromise is a temperature controlled fan but that adds to the cost and complexity. GK came a cropper by not fitting fans to some of their 200 watt combos. They used the ICEPower 50ASX2 in what was effectively a closed box. They added fans in the MK2 versions. The active cooling in some Aguilar amps is sub-optimal and I am sure they are not alone. Am anything be done? Yes but more on that later. As @Passinwindsaid earlier, it is possible to add passive cooling to a class D amp but that comes at the expense of weight, size and cost. Shipping is charged by weight and size so a bigger amp will cost more if everything else is equal.

I do have a travel router too that is dual band but I had trouble setting it up. I might try it again, although i do the main mix from a laptop running Ethernet.

The finer side of those nail buffers is several thousand grit. Much easier to get than a high grit paper/cloth.