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Ampeg Isovent - Jack Plate Circuit Board.
- Thread starter Nicholas Orick
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All if the old wiring it out, and the new wiring is going in, but we are waiting for certain parts to come in next week, so it will be the middle of next week before we know anything.
In the meantime I tested and old Ampeg V4B folded horn with my fretless six string bass going through an old Ampeg 2UR amplifier.
The speaker sounded great, with bass rolled in I could get a food low driving bottom end, but C3 in the middle of the neck was slightly intensified. Overall the Ampeg V4B foldes horn sounded good.
If I werent fancially tied up with something right now I would conaider buying the older V4B folded horn.
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It's a long time ago, I only just remember the picture, if I had to guess I would say early 70's (but could be way off).
what parts are being waited on? this vintage of cab used 1/4" connectors, no? home boy doesn't have one lying around?
Oh you think you are Oh So Smart?!
He has the Quarter Inch Jacks, and the wire, but we are installing something we YOU Don't know about YET.
How's that?!
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won't really prove that the crossover was the problem but Bob's your uncle
I left in October 73.
What did you think of the V4B folded horn?
Do you remember?
Have you tried the Isovent?
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I don't know exactly what it will prove.
Once we see what we get then we will take it from there.
I Googled it and it appears to be first issue in 1981.I left in October 73.
I develop measurement gear for my day job, and one lesson I've learned is that making a measurement is 1% of the work, while knowing that it's really measuring what you think it's measuring is 99%. There are a lot of pitfalls when making an audio measurement, especially when you're using a DIY setup to measure a DIY design. How do you know what's real?
Not to mention, that the signal from the speaker terminals of an amp can toast your computer, even if the volume is turned all the way down. That happened to me once.
It may very well be that the learning experience of having to understand the basics of signal measurement is a worthy pursuit in its own right, if it can be done safely.
Should we send an Ampeg folded horn up to the ISS?
I am sure there is room for it some place up there.
I think it's time we send the Sound Room Module up there.
I am sure there is room for it some place up there.
I think it's time we send the Sound Room Module up there.
I've also played through that Ampeg cabinet. Up close, it's very hard to hear it - so the tendency is to turn it up louder. Then everyone 50-100 feet out (and beyond to a degree) will feel a bit sick from the SPL because it takes a long room to carry a cabinet like that and because of the amount of power you have to push through it to hear anything up close. I don't remember it having much really low bass. It was mostly upper-bass and had almost no definition (ie, no sound above about 700Hz)...
That, by the way, is a 250 pound cabinet. Or pretty close to it.
You could get casters for it, but the OEM casters were BARELY sufficient.
It's almost as if you've scavenged my really old rehearsal spaces ... bringing back lots of memories.
Does that one have the impedance switch?
I had a similar experience with an Acoustic 360 the one time I played through one back in '84. Could barely hear myself on stage at all, but audience members suffered concussions from the bass. (I only slightly exaggerate, but the sound guy was saying through the talkback, "turn that down, you're killing us out here!") The experience kind of soured me on that style cab. I'm sure they have their place, but that place isn't part of my rig.
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