traynor cab

[lenaghans1]

i have just bought a four 12 inch traynor ysc-4a cab.it is late sixties early seventies.it has one bad speaker.the speakers are marsland.does anyone know of a different make of speaker that will fit straight into the cab

thanks peter

[JohnH]

Some one may know exactly what would match, but if not:

If you match the Ohms (8 or 16) then it should work technically, and this should be marked on the drivers or the cab. Being a 4 x 12, the overall cab Ohms will be equal to that of each driver. If this info is not visible, then measurements with a digital meter would be needed.

The other aspect to check would be the set-out of mounting holes. You might need to get in and measure this, and relate it to data on the web sites of speaker manufacturerers. I am not sure how standarized this is.

Then theres he whole subjective angle of the sound of the speaker. I would think its not worth buying a super expensive driver, since the sound will be dominated by the other three drivers. Nothing wrong with have one different unit though (as long as the Ohms are correct). My cab has three Celestion G12L's and a G12S.

John

[sumgai]

len,

Any 12" speaker will fit, mechanically speaking. Speaker makers long ago learned their lesson in selling their wares - if it doesn't fit, it won't get purchased, pure and simple. People don't want to be forced to rebuild part (or all) of their cabinets just to install a replacement speaker.

As for Ohm's, see John's post above. And when it comes to sound, John is spot-on here, too. No one speaker sounds "close" to what you hear from another unit, unless it came off the same assembly line. But......

There is a growing school of thought that says, "mix and don't bother to match". In essence, you take various speakers that have tonal characteristics that you like/want, and you throw them together. This may or may not work, but if you have a good relationship with your dealer (you can return what you don't like/keep), then this may be a very enjoyable quest, searching for that ultimate tone. ;D

There you have it! Good luck in your sojourn!


sumgai

[lenaghans1]

thanks for the replys.i should of said i was meaning fixing the speakers to the cab.it is a sealed cab,and the speakers are bolted to the panal.the bolts screw into metal bits fitted into the panal.there is four bolts per speaker so the bolt holes in the speaker have to be spot on.i think the cab was made in canada.i dont know how hard it is to find these speakers here in england

thanks peter

[sumgai]

Peter,

That method of mounting speakers to the baffle board (the proper name for "panel") is common. In fact, there really are only two ways to do this: either studs are permanently affixed to the baffle, and nuts secure the speaker, or screws go through the speaker and into T-nuts. (T-nuts are made to stay in the wood so that you don't need to hold them with a wrench or anything.) You described the latter method.

It has been my experience that while some speakers are a little hard to get lined up, they will eventually "find their way" to letting you tighten everything down.

BTW, there is a proper tightening sequence, just as for anything else that mounts with several screws in a pattern. The basic idea is to keep from over-torqueing a screw or nut, thus warping the speaker's frame (the basket rim). Just do it like you're putting a wheel on your car - opposite sides, in a "star" pattern. Go around at least twice, applying a little more pressure each time. I usually snug the screws/nuts down by hand, then do the pattern three times. And I do this by hand, but if you are comfortable with your drill motor's torque clutch, then you could use that. Mine is too course, it'll overdrive hard enough to strip threads in a heartbeat.

Aside from that lecture, just buy what 'feels right' to you. If you're not way out in the countryside, then you should be able to find a dealer that will let you experiment. Perhaps you've got friends who let/help you experiment by lending you their speakers. Just for purposes of scientific investigation, of course. ;D

Again, HTH.


sumgai

[lenaghans1]

sumgai i dont have any problem fitting the speakers.its getting the right speaker with the holes for the bolts on the speaker lining up with t nuts in the baffle board

thanks peter

[lenaghans1]

i have just unscrewed the four speakers and checked the backs of them the bottom two are not wired up.i will have to rewire the cab.i have come across a wiring diagram,it is series/parallel.is that the right one for a four speaker cab.the diagram shows one input jack on the back my cab has two.does anyone know where to get a diagramto suit two jacks.does some of the wires have to be the same lenght. at a later date i will replace the speakers to make the cab have a higher wattage

thanks peter