'60 Ampeg B-15 | Part 5 : The Boring Stuff Matters
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- Опубліковано 11 бер 2022
- You won't hear the bass at the end with cellphone or small computer speakers.
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I had a mid 60s B-15n, all original back in the 70s. People assume they are going to sound like Motown recordings, which were actually DI, but they have a nice polite sound. Not a lot of super low end. They were guitar and accordion amps, as well as for upright bass.
I ended up putting a JBL speaker in mine in the 80s. That was a great sounding upgrade.
I much prefer the tone stack in the B-15s (without the ultra low, etc., switches on the later ones) than on the SVT. The SVT can be very boxy sounding.
Although this particular application isn't critical, and it's easy to get foam rubber weatherstrip from the hardware store that will work, it can be surprisingly difficult to find suitable foam rubber weatherstrip or compressible foam gasket material for use on lots of other old electronic equipment. Vintage stereo tuners and receivers often use strips of foam rubber behind the face plates to prevent the dial illumination backlight for the tuner dial from leaking out through the sides, and to help prevent dust from settling behind the dial scale where you can easily see it ---- but 40 to 60 years later, that foam weatherstrip crumbles to dust if you look at it funny. The closest stuff I've been able to find to it, with the right open-cell compressibility, and in dark gray or black, is twice as thick as it needs to be, and I have to carefully shave it in half with a super sharp razor blade. And then there is a Nakamichi multi CD player that uses little bits of foam on the arms that swap the CD's around, and that stuff degrades and turns gooey and greasy, leaving greasy spots on the CDs. We have almost run out of our supply of foam weatherstrip of the right thickness and density that will work on those machines and we haven't been able to find anything like it. Anybody here have a good source for a wide variety of self adhesive foam rubber? Please share!
Accetone sometimes reduces the old glue also denatured alcohol
I heard you say I'll Take You There, to Higher Ground 🙂!
Doin the Time Warp - classic.
In the first band I played in, the other guitar player had a 63 Bandmaster rig. And the cabinet was loaded with 2 SRO 12's...talk about learning the hard way....my back is still screaming from hefting that box...
I'm back!!!! Finally! Not out for Saturday at the park but running errands, great viewing as always!!!!
I'm not liking my EV these days.
I think your right about that
midrange thang.
Boy that sounds smug!😂 This episode has TOO many innuendos for an addled adolescent mind to HANDLE!! Kidding! It was informative as always 🙂
Great work here! I sure as hell don't own a historic recording studio, but for my money I'd get that EV out pronto. Good condition Altecs or JBL D120F's aren't terribly hard to come by. Even a new production Eminence Delta 15A would prove a better match. That said, if they are always paralleling the DI, then I suppose the mids on the EV might be a boon?
Not a fan of that speaker in there either and I was thinking exactly the same... who knows maybe the studio uses a DI along with and all those mids the amp has are just what they want?!? A Jensen or a CTS would be what I would put in there. My '67 B15n/c has a JBL D130F that was reconed with a proper JBL repacement as a 140 back in the '90s. It sounds very nice but I have thought about downgrading to the CTS so it could maybe have a bit more character as the JBL has a very controlled hifi kind of sound. The '67 is a somewhat different than a '60 however as the cab is sealed and the amp circuit is somewhat different than the models from the first half of the sixties.
I had a pair of SRO 12" in a late 60's Bassman cab and they didnt seem to have crazy mids like this one for guitar or bass so I'm not sure if the 15" here is working properly
Apologies if this has been addressed, what’s your take on tube availability with the Russia situation?
I decided I'm just going to start making tubes lol
Homie, will this 15 go good with 8 10s powered by SVT 300w tubes I also have 2 15s with a Yamaha PA
I think it sounds pretty similiar to the emulators these days.
Hi Lyle,
Not relevant to this video, but when you use isopropyl for removing moisture & conductivity from old boards, are you using the 99.9% pure stuff you find at electronics suppliers, or the standard 70% or 91% isopropyl from drug stores? Thanks!
91% is fine for this.
Yeah it may be early 60’s & even with rounds on your bass that’s money ….
What was the fix for the loose cardboard “gasket”?
Oh, right! It was there to keep the rear bell from buzzing. As the rear bell is long gone it's not needed.
@@PsionicAudio Thanks that was bugging me since the first video you showed it in 😂
Are those grid leak values stock, or were they modded? I know octal preamps can handle relatively extreme component values, but it’s not at all necessary for good gain.
I have never heard an EV speaker that I liked in person. They’re extremely “pokey” in the upper mids. It has to be the power handling people were after back then.
JBL’s are even worse. Especially with those harsh aluminum dust caps. Modern day “clones” have the same issues with both types.
Stock. In the early '60s Ampeg, Gibson, and Valco were in a contest to see how much they could ignore the schematic for any given amp.
Valco won by a landslide, but the others have some good contenders.
@@PsionicAudio , ah, but which company wins the "Let's use weird, non-standard parts and component values!" contest? Probably Valco, with 6x11 automotive speakers (originally used in 57 or 58 Chryslers, IIRC) and field coil speakers, but Ampeg used odd tubes, clutch-head screws, and some odd resistor values. Speaking of, does anyone make replacement 6x11's nowadays, or recone the originals?
Lyle, no job is worth doing, until you do it twice! 🤪