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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 1:06 pm
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Very cool Idea Matt, looks good too. Thoughts going around in my head, firstly and pardon my ignorance what's SPL, (cancelled something panty line, cos that's just silly), but that's where my humour took me and just cant get any further no matter how hard I try. The scoop idea at back corner sound a good idea too, I'm sure you have other ideas and intend on sciencing the $@!& out of this project, keep us updated.


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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 1:42 pm
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:lol:
SPL = Sound Pressure Level
In other words, decibels... volume.

Actually, I think I'm pretty much done with it.
I'm going to install some 1½" diameter felt feet on the bottom to save my flooring.
I installed a hole in the back panel to run the power cord through and I ran some weather stripping down the edges of the side supports to save my tolex.
Humorously enough, the weather stripping is a dead match for colour and no, I didn't plan it that way.
Pics coming soon.

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 2:51 pm
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I didn't do a with and without clip because I believe the only way to successfully demonstrate a difference in tone is to use a looper to record a guitar part and then make your rig changes while being careful to keep mic placement and recording settings equal. That ensures the guitar playing is a constant and is not part of the reason why one sounds different from the other. I've never owned a looper. You'll just have to trust me that it sounds better, beefier, like there's more amp there than there really is. I think I'm going to forego the Beam-Blocker and call this done. All I have left is to go to Wally World and get a set of those felt feet so I can hang my towel back up. LOL

Boogie Box Sample Clip

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Just think of how awesome a guitar player you could have been by now if you had only spent the last 10 years practicing instead of obsessing over pickups and roasted maple necks.


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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 3:13 pm
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Nice work - they are functional too!

http://www.lawsounds.com/Newsletter.html

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 5:26 pm
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Love it, brilliant principle.
Good work BMW-KTM. Nice and neat.

I have to ask, does the DC suffer the same bass problems that Mark series amps suffer. And is the port-box a viable work-round of those?

I've been considering building a Thiele cab. If you remember a guy who used to post on here, BigJay. He has one that he uses with his MK4 and thoroughly recommends it. I can see it achieving the desired effect. As I think the biggest problem with Mesa combos is their tendency to focus that incredible mid range. Taking the treble that Mark circuits rely on. Leaving the bass to try it's hardest to catch up and at the mercy of the cab.
However it seems silly to me to get another cab when I bought the combo so I could just lob all my gear in the back of the car. Gig, go home.
An extra cab is another item on the load out. Another step on set up and breakdown. I'm just not rich enough to pay someone to do that for me and not hip/popular enough to persuade someone to do it for me.

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 6:06 pm
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I certainly do remember Jay.
He was actually a friend on facebook for a few years.
Not exactly sure how that connection ended.
Doesn't matter now anyway because I quit facebook several months ago and couldn't be happier about it.

Boogie makes a Thiele 112 cabinet sized to fit the early Mark and DC amps.
I know what you mean about Boogie midrange. It is quite robust.
Boogies are the only amps I ever scoop mids on. Not much but a little.
I do also find my typical settings tend to push a little on the lows.
I don't get too carried away because any amp will get muddy and horrid if you push any one aspect of EQ too far.
This little "port" I made does a very good job of boosting low end a touch without adding mud.
I assume that's because the extra lows are coming from what the amp is already producing.
I'm just harnessing them.
At only 10 pounds this thing is pretty easy to pack around.
Not to mention considerably more economical than a cabinet.
:idea:


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So, Matt ....
Would you say it's a good bet my little box would come in at about 0.1 SILs?

:wink:

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 6:18 pm
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That's pretty cool. It could possibly make those old 60's bass amps actually useful for bass. You know before they figured out that having an open back is a bad idea. :P

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 6:48 pm
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Yeah I've a real problem with scooped mids. Mainly because every other band we share a stage with scoops the bejabbers out of the guitar mids. Then scratch their heads wondering why no amount of volume gives them power.

I found the graphic on my boogie is pretty useless in the traditional V shape. And the MkV lacks the low end of the 2 and 4 apparently. I found that if I keep the boost of any frequency relative to roughly where the mids are. It gets round that a lot. So I can boost the bass on the 80hz slider. But achieve more perceived boost by lowering the 240hz then setting the other sliders relative to that.

Like so.

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I think a lot of my problem has to do with me not being used to 1x12 open back cabs any more. And I think I'm not enamoured by the C90 speaker.

I was watching a Dual Caliber on Ebay UK a month ago. Started out at £1. Didn't do anything till the last 30 seconds when it rocketed up to £680 ish.

I think I'll be building myself a combo-porter. Trying to think up a catchy name to spray on the back of it, already.

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Post subject: Re: I built this today
Posted: Fri Feb 26, 2016 8:19 pm
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I think you might be right about the Black Shadow not being particularly bottom heavy but I do think it might be better than, say, a Vintage 30 for high gain tones where a lot of bottom just turns everything to mush. Everybody seems to be in a rush to install the V30 these days. I suppose it's a nice speaker. I've had them in a couple of my amps. I like them for cleans and lightly overdriven tones but I'm not a fan when push come to crunch. It's got a little deeper voice but it doesn't have the same sparkle and sizzle as the C90. I have a harder time getting a nice squeal out of a V30. I think I'm fairly happy with my little Boogie, Black Shadow and all. This contraption I have made with my hands gives the little amp a bigger set of cajoñes and that's all I was going for.

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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 1:25 am
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There were commercially made "sound enhancers" some years back, but I don't think they're currently produced.
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http://www.tdpri.com/forum/attachments/ ... hbpg40-pdf
http://www.soundenhancer.com/the_enhancer.htm

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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 4:39 am
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Cool idea.
I recall the .50Cal being quite directional, does this change that in any way?


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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 6:06 am
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:shock:

http://www.soundenhancer.com/


Wasn't expecting to find them in business anymore. No web sales, no ebay listings

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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 8:47 am
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Well, this is all very interesting. I had no idea these things were commercially available ... and different manufacturers and designs to boot.

jmattis wrote:
I recall the .50Cal being quite directional, does this change that in any way?
Directional.
Do you mean beamy?
Like there is a spot where the sound is focussed?
Most amplifiers have a point, usually around 8 to 10 feet in front of the amp where the sound comes into a sharper focus.
I don't know if I have ever owned an amplifier that did not exhibit that in some measure.
I believe it depends more on the speaker than on the rest of the amp.
From what I have read on the subject I think there are two factors at play; the frequency response of the driver and the shape, size and material of the driver dome.

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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 9:27 am
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Good job!

Making things for yourself, no matter what it is, is something I highly recommend for everyone. The satisfaction alone is gratifying. Whether it's woodwork, metalwork, drawing, composing a song, or anything else. We picked up the guitar because we have at least some creativity in our bones, and the more we use the creativity, the better we become at all of it, and the happier we'll be.

Anyhow, kudos! *CL* *CL* *CL*
(I broke my shoulder a week ago, so it's one handed clapping right now...)


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Post subject: Re: I built this today
Posted: Sat Feb 27, 2016 9:50 am
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BMW-KTM wrote:
jmattis wrote:
I recall the .50Cal being quite directional, does this change that in any way?
Directional.
Do you mean beamy?
Like there is a spot where the sound is focussed?
(...)
I believe it depends more on the speaker than on the rest of the amp.
From what I have read on the subject I think there are two factors at play; the frequency response of the driver and the shape, size and material of the driver dome.

Yep, beamy is what I mean - as in, you either need to have some amps at a certain direction to get the sweet spot, or on some amps the placement doesn't seem to matter at all.

I've always thought that also the closed or open back design plays a major part in this, but maybe I just bought into the trade jargon. It's been "some years" since I played thru the Cal, but I recall being a bit surprised an open back combo was so specific to the best placement - and I thought you referred to roughly the same on page1; "I am less convinced of an overall SPL increase. I sense there might be but it's hard to say since the amp now points directly in my face due to the slight tilt-back."

BTW, you may (re?)start a new trend with this. The people at Soundenhancer probably give a standing ovation. :lol:


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