BassmanPaul

The last time I used a 2x12 it was in late 1968. A brand new blackface/Blonde Fender Bassman. It look beautiful sitting there on stage. It was a torture I've been unable to forget. it was a weekend that seemed to last months! I took it back to the store and, as they had sold my trade in, I just left the damn thing there anyway! That said, in todays world with modern drivers and cabinet design, I'd have no worries gigging a 2x12.

I'd trust something made by Peavey far more than anything TCE puts out!

I have to wonder just how many b15 units made it over the pond. I can't remember seeing even one back in the day in the Liverpool area. I bought mine from the US. It needed work which I did and now it just sings. I love my fretless six through it but it supports all of my other six basses equally well. Biggest problem apart from leaky coupling caps, was flash over in the rectifier tube when coming off Standby. That was easily cured and the amp works like a charm.

There is no reason for a B15 of any series not to be reliable if properly maintained. Mine sits in my studio and when I switch it on it works. When I switch it off it doesn't!

Jeff's one of the good guys!

You can buy suitable stick on feet from hardware stores, 'Dollar' stores or from kitchen supply stores. Easiest would be just to email GK.

Be careful what you do in there. It's all too easy to screw something up leading to an expensive repair.

IIRC you were advised on TalkBass to contact Mesa for the information you seek. Are you trying to import an amp from the States to save money?

Tube heads are easy - you just have to provide a suitable load resistor when the amp is inactive.

From a Sex Mechanic?

It would be fairly simple to make. The switches would need to be DPDT that break before make. Both the +1 rail and the -1 rail would need to be switched.

SLAP! Why do demos always seem feature slap so much?

Hi @boromanwe haven't' talked in a while. Trust everything is well with you and yours in these troubling times. In my B15 I tried a JBL 2225 and an Altec something or other but I preferred the tonality of the original square magnet CTS. That's what is in there now. The unit will never be a bass pounding monster 'cos of the small size of the speaker box. It is, however, a wonderful amplifier and handles everything my six string basses can throw at it.

This is something that you have to be extremely careful with. Most Class D bass amps are not ground referenced. They are permanently in bridge. This means that while one power amp channel drives the speaker positive rail the other drives the negative rail. If you then plug in a unit that IS ground referenced it will short the negative channel to ground destroying the amplifier.

Some years ago I actually wrote an article published in an electronics magazine on an adaption I made to something like that. It required taking the pump off and replacing it with a plastic tube connected to my shop vac. It worked very well . I drilled a hole in the tube where the button was to allow the air to escape without cooling the tip. Blocking the hole with a finger allowed the PC board solder to be removed.

I have been using a soldering iron since age 13 or so. LOL I'm 74 ATM but only getting older! it's all too easy lifting a trace and ruining the PCB so thus my warning. Many of us have an old obsolete circuit card, say from a PC or the such. Actually trying your hand on the real thing gets you the feel.

What cleaner did you use? You only should use Deoxit D5 and then only the tiniest amount. Way too many pots have been ruined by the application of 'cleaner.'

Be careful when working on a PCB. If your iron is too hot you can cause a trace to lift off the board. I suggest using an old PCB to practice on so you can get the 'touch'.

Mary ate jam, Mary ate jelly Mary went home with a pair in her ohho. Don't get excited Don't get misled, Mary went home with a pain in her head!

If they marketed this unit in the Americas they'd have to call it the Gas Stove!

In my mind they are not such a good thing. You have to drive the snot out of your amp and then throw that power away as heat. I feel you are going to be shortening the life of your amplifier.

Why not email Markbass and ask them?

There has been a quantum shift in loudspeaker technology over the last few years. Drivers are much more able than they have ever been. You still have to have reasonable expectations on performance. A single ten inch cone can only move a certain amount of air no matter how good the driver is. Alex's products are as good as current technology allows. I'd love to play through one.

Until it didn't. Talk to Alex, I'm sure he'll help you resolve this.

Quite probably but in my case I would have to try one to be convinced. I use a vertical stack of a pair of Acme B2 2x10s. I'm also very conservative with my amplification systems. Living in the Toronto area I've yet to have the pleasure of auditioning any of Alex's products though I have known him through Talk Bass for many years. IIRC at one time he was an Acme abuser too.