Hello & Good morning !!

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dionisio

dionisio

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Joined 2005
#1
Hello & Good morning !!

Hi everyone,
I found my way here through Pass DIY ( big nelson fan!). This website is truly amazing!
I've been into electricity & music most of my life. Audio electronics is something I would like to try to understand better. I have a humble understanding of individual components but lack the vision to see how they cooperate as a circuit. I belive i've come to the right place.
Anyway I'm looking forward to chatting with you guys about all this fun stuff and hopefully someday I will come up with a really cool idea that I can give back to the community. 😎

Well for starters (please feel free to laugh, I do) I built a voight pipe (yes, one) about 4 years ago. It sounds very nice indeed. I started the second one and my tube amp gave up the ghost.(PS caps, I think) The amp is a 44 yr old stromberg & carlson 6l6 pp design. I have been quite badly digitaly maimed on other forums for revealing this as, PP amps are reputed as well rather... taboo.
Actually I thought it sounded quite musical coupled to the voight
Any how, off to a great start, I shall revive the amp and finish my other speaker And then....Klein horns!! mmm tasty!!

Gotta go for now
Thanks for reading
 
#3
Hi dave
I've tried a few different inexpensive full range drivers in the pipe and came to settle on the RS 1354 , the best by far. I would like to try some more as time and money allow ( fostex maybe lowther someday) The 1354 is a nice driver for the money although a little loose in the bottom. The midrange is very good.
 

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#4
dionisio said:
I've tried a few different inexpensive full range drivers in the pipe and came to settle on the RS 1354 , the best by far. I would like to try some more as time and money allow ( fostex maybe lowther someday) The 1354 is a nice driver for the money although a little loose in the bottom. The midrange is very good.
Click to expand...

Have you done any of the "standard" tweaks. If not there is a lot more you can get out of the humble 1354. Is it a classic voigt? If yes you may be able to tighten up the bass by restriction the port somewhat. The refernce design for these is Bob's ML-Voigt. When i get around to my 1354s i'm going to do a bipole variation on those....

An externally hosted image should be here but it was not working when we last tested it.


http://www.t-linespeakers.org/FALL/bipolar/index.html

dave
 
#7
planet10 said:
Have you done any of the "standard" tweaks. If not there is a lot more you can get out of the humble 1354. Is it a classic voigt? If yes you may be able to tighten up the bass by restriction the port somewhat. The refernce design for these is Bob's ML-Voigt. When i get around to my 1354s i'm going to do a bipole variation on those....
Click to expand...

Hi dave thank you for the links !! I especially like the bipolar design.
I've tried a few tweaks, I really don't know what the standard tweaks are.
I don't remember who's voight design I used, I changed the design, kinda rule of thumb to make it easier to build with what I had on hand for materials and tools. The only real difference is that I put the port on the bottom and made the legs adjustable to vary the port height off the floor
 
#8
dionisio said:
I really don't know what the standard tweaks are.
Click to expand...

Ductseal the basket (and use it to shape the area between basket & magnet to make it smooth)

treat the cone... dammar seems to be standrad, i like puzzlecoat on the cone and dammar on the whizzer

the 98 cent tweak (various ways of supporting the whizzer at its edge). I use a thin piece of light foam rubber cut into a strip and wrapped around the outside of the whizzer so that it damps tha whizzer's outer edge.

Then -- not a regular tweak -- but a significant one is a dustcapectomy & addition of phase plugs.

1354-w-plugs-S.jpg


dave
 
#11
dionisio said:
How do you like the phase plugs?
Click to expand...

I'm somewhat prejudiced being the vendor.

Here is what Jeremy Epstein had to say (pinched from a post on the Full Range Forum):

Well, I did install a pair this morning and David asked me to jot down a few comments. I hadn't realized I was the "first adopter" but I guess I'm used to that by now, let Mikey try it, he'll eat ANYTHING . . . .

1) I was unable to use the "loosen the glue with heat" method due to a lack of patience so I took an Exacto knife and cut out the dustcaps instead.

2) That's OK, I don't think I'd want to go backwards. There is a clear change for the better in terms of clarity/speed/smoothness, which initially I worried I had perhaps paid for with a loss of low end. However, after listening a bit more all day today, I don't think that was the case. I think it's a win all around. And this is not one of those "sit in the sweet spot and squint till you think you hear something" improvements - it just immediately sounds like a driver that you paid five times as much for. (Or more, I guess, these 40-1354's were so damn cheap!) The rattles on tambourines sound more clearly, percussion transients seem to have less grunge to them, vocal timbres seem clearer. It all just sounds more coherent and less congested.

Installation (including the two minutes lost trying to use the hot air to heat the glue) took less than 10 minutes, more like 5 really. The magnetic fixing mathod is a snap - literally - the only part the least bit tricky was first sucking any stray bits of paper out of the cavity which I did via the Lewinsky maneuver.

I'll report in after a few weeks of listening but I doubt very much I'll be having any second thoughts, there is a clear improvement with the phase plugs.

3) They look snazzy too.

4) Full disclosure: I paid full price cash for two pairs of the plugs and I have no affiliation with David except that I like him and he explains Mac computer stuff to me VERY SLOWLY so I understand it, for which I am eternally grateful.

-j
Click to expand...

dave
 
#12
Hi dave
Checked out your site, Nice idea/job on the phase plugs!
Also, you given me alot of great stuff to work with and try and I just wanted to say thanks. 🙂

Just an aside here but do you know of anyone building their own drivers? I gave it a try once but gave up too soon. I was inspired by Be Yamamura, of yamamura churchill
 
#13
dionisio said:
Just an aside here but do you know of anyone building their own drivers? I gave it a try once but gave up too soon. I was inspired by Be Yamamura, of yamamura churchill
Click to expand...

I have a buddy in Calgary that used to build his own drivers (he bought cones, voice coils, and magnet blanks).

An externally hosted image should be here but it was not working when we last tested it.


There was also a fellow a while back on the Full Range forum making his own driver.

dave
 
#20
dionisio said:
Are the RS 1354's out of production now? :bawling:
If so is there any place you can still get them?
Click to expand...

Unfortunately in their great wisdom Radio Shack discontinued the 3 best drivers they ever sold.... to get them you either need to be real lucky and find an RS with some stashed in the back room or you need to seet-talk someone who has some out of part of their stash (that is how i got mine)

dave
 
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