Mini Karlsonator (0.53X) with Dual TC9FDs

[gazzagazza]

Magic eraser pads... Does it have to be the Mr Clean brand? How do you buy them, bulk packs? Any links to Amazon as example?

 

[freddi]

go to Ebay and type: 100Pcs Multiuse Magic Sponge Eraser

 

[CraigSu]

Magic eraser pads... Does it have to be the Mr Clean brand? How do you buy them, bulk packs? Any links to Amazon as example?

Here’s what I ordered recently. The price tends to fluctuate. I paid USD $3.16 per 100, actually got 2 packs at that price. My wife was surprised when I asked her to place the order, especially when I told her I wasn’t planning to clean with them.

https://www.amazon.com/dp/B01LZB2HOQ/ref=cm_sw_r_cp_api_i_Gb3.Db8V3EBJC

 

[gazzagazza]

Ok. When I see prices like that I know it's coming from China, and sure enough there is plenty of those deals on AliExpress. Great!

 

[Buehgemeiste]

X, which areas would you pad with the magic eraser pads?
A sketch would be very helpful.
Are those magic pads suggested in a mltl, too?

 

[CraigSu]

X, which areas would you pad with the magic eraser pads?
A sketch would be very helpful

Check the end of Post #1 of this thread for the link.

 

[Buehgemeiste]

that post brought me to the point where i am stuck.
i don't precisely see which surfaces are padded inside the inner chambers.

 

[Buehgemeiste]

Is there anything else suggested than the red areas in the pic plus the sidewalls where the speakers sit and behind the k-aperture?

 

[metallicus69]

Mini Karlsonator (0.53X) with Dual TC9FD's

I have built 0.4x and 0.53x versions. For both I have used dense sponge only in the backside of the inner chamber and on the bottom panel (right below the driver) with fantastic results. So I hope my answer helps you.

Yes, mostly those areas you showed, but not on the front [emoji4]

 

[Buehgemeiste]

on the backside of the front panel i attached carpet.
this is where x put foam board.
i'll leave that area as it is.

 

[gazzagazza]

XKR - here's another driver possibility. This brand seems to be gaining momentum, and the drivers are very well priced...

Lii Audio Fast-5. Will this Karlsonate well?

 

[xrk971]

That looks promising actually, of the TS parameters measure out like that, it could work. Will have to run a simulation to set scale just right.

 

[Mario KS]

XKR - here's another driver possibility. This brand seems to be gaining momentum, and the drivers are very well priced...

Lii Audio Fast-5. Will this Karlsonate well?

How cool to see that they depict the frequency response on their label! Who else does that?

 

[Bergarth]

I think the Karlsonator 8 is too big and at 41Hz fb, tuned too low for the 100Hz fs Celestion 8. Maybe something around 1/3 that size (?)

super fudged sim - tuned ~80Hz

Maybe there's an XKi for Celestion's TF0818 8 inch?

AH I see- lol well they are only spares- I was considering the TF1020 10" the do dig a bit deeper-

 

[freddi]

fwiw - a short MLTL for TF1020

 

[freddi]

I'd put TF1020 in little horn for fun
https://i.imgur.com/1sdwhLA.png

 

[tooppy]

Freddi, while we are at it with Lii Audio, I have a pair of F15.
Can you make a sim in one of the big Ks ?
In other words, in which K it could work well ?

One Pair | Recommended 15" Full Range Speaker Driver | Fast High and Scaled Sound | F-15 - Lii Audio, unique speaker, amplfier, quality and cost-saving parts for HiFi DIY

 

[freddi]

hi Tooppy - F15's published parameters are screwy - if below is ballpark then should play ok in a classic K15

 

[Bergarth]

I'd put TF1020 in little horn for fun
https://i.imgur.com/1sdwhLA.png

Yeah looks fun!!!!! I'll find something to design it with. I'm not good at taking Hornresp and converting into a build

 

[Rxdroid]

I got a buddy who would like a pair of speakers for his outdoor terrace restaurant.

There's a roof, but 3 sides are opened, the last wall is the restaurant wall towards the inside.

I'd like to try dual mini-ks, but I can only mount the boxes in the top corners, higher up near the roof. Angling the boxes down only bring the woofers parallel to the wall, not facing down, due to the angled mounting of the drivers.

Would it be ok to mount the boxes upside down? How would that affect radiation pattern?

Since the drivers are angled in the box, I could just mount the boxes flat on the wall, but upside down. That way, drivers would face down a bit.

upside down can work - draw a straight line from the driver's center which faces the widest portion of the K slot and that would be the central high frequency beam (I'm not sure of the HF contribution of the upper driver which sits back more "shaded")

Yes, I have actually tried mounting it upside down. If on wall near ceiling you can get substantial bass enhancement as if it were on floor near back wall.

IIRC, the original Karlsons were frequently corner mounted upside down against the ceiling, and it was even recommended for bars or restaurants or similar situations. It loads it exactly the same as if it were on the floor, which is a bit better even than on stands/a desk.

Hola

I am reading this interesting, documented and long thread, I found this image of the time, clarifying

In another order of things you have captured me with enthusiasm about the Kalsonator with what I am considering while I have access to a CNC to build the Cornu, go doing about 0.53X dual. Now I am going to draw them to be clear about the construction process and materials, as soon as I have it public and I ask the questions.

Un saludo