a (cheap) small (waf) build 3-way (made from salvage)... 😕
It's a first step for a possible much larger project to come. 🙄
Click on the pics to see the correctly sized version 😉
The project - on paper :
The boxes - recut 18mm pinewood planks :
The speakers - all from re-use :
The midrange back covers - PP tupppz or PVC pipe - will end to be the PVC version (a bit larger) since the lead disk are not glueing satisfactorily on PP :
Finish : two-tone Tolex covering (like a guitar amp)
Wait and See... 🙂
A+!
It's a first step for a possible much larger project to come. 🙄
Click on the pics to see the correctly sized version 😉
The project - on paper :
The boxes - recut 18mm pinewood planks :
The speakers - all from re-use :
The midrange back covers - PP tupppz or PVC pipe - will end to be the PVC version (a bit larger) since the lead disk are not glueing satisfactorily on PP :
Finish : two-tone Tolex covering (like a guitar amp)
Wait and See... 🙂
A+!
Thanks @AllenB and @Twin Spark ! 🙂
I never used Philips tweeters. I found these ones quite well built and Funky. They come from a SCOTT 186B enclosure pair - like these :
Their specs seems to be from a quite good level (Philips doc.) :
I'll make some measurements to confirm...
And yes, I like to use fan grids to protect speakers : it's a bit odd, but efficient and unseen everywhere - here on a pair of WAF-2W speakers
that I made mid-2000s :
I even found a pair of grid for the woofer W170S8, but I don't know if I will use them... 😕
The midrange back covers will be PVC pipe finally :
I studied the possibility of a sealed/bassreflex convertible enclosure by plugging the vent :
Wait and See ! 😉
A+!
As usual, click on the pics to oversize... 🙄
Today finalization of the placement on the front face :
I also extended the midrange back cover from 0.3 to 0.6L :
Sealed or bassreflex operation are smply obtained by plugging the vent :
Wait and See... 😉
A+!
Today finalization of the placement on the front face :
I also extended the midrange back cover from 0.3 to 0.6L :
Sealed or bassreflex operation are smply obtained by plugging the vent :
Wait and See... 😉
A+!
The last time I measured W170S-8, the T/S parameter Qts=0.7 so sealed option looks more promising although we can not exclude personal preference either way.
Yes, true @Lozjek. Actually, the two options will depend on the amps I will use : high (bassreflex) or low (sealed) damping factor.
The pair of W170S8 I have (since 2003) show a QTS at 0.46 using the mass-added measurement method with LspLAB, so it is at the frontier from sealed and bassreflex. So why not going "convertible", then ? 😉
Wait and See... 🙂
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Thanks @westbounds ! 😉
Today 1st presentation of the parts on the drilled but not finished boxes (1 like plane, 1 symmetrical) :
For the finish, I will use Tolex covering, as I do on guitar amps. Bicolorism - sides will be Levant Orange; top, bottom, front, back will be Ivory White, like below (same grain) :
Wait and See... 😀
A+!
Today 1st presentation of the parts on the drilled but not finished boxes (1 like plane, 1 symmetrical) :
For the finish, I will use Tolex covering, as I do on guitar amps. Bicolorism - sides will be Levant Orange; top, bottom, front, back will be Ivory White, like below (same grain) :
Wait and See... 😀
A+!
Thanks @westsounds ! 😉
Yes. You can quickly have a nice finish... 😎
Plus it's very easy to cut and put, once you have the correct tools, products and the trick ! No more painting or coating for me... Moreover, there's a great assortment of colors available. Below - Surf Green and Ivory White :
A+!
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Work is on progress : today, I Tolexed the cabs - the corners still need some touch-ups to be finished though.
As usual, click on the pics to see them correctly 🙄
Quick presentation of the speakers...
Wait and See... 😉
A+!
As usual, click on the pics to see them correctly 🙄
Quick presentation of the speakers...
Wait and See... 😉
A+!
Bloody Hell, how one can make so nice edges on a box ??? 🙂
Looks perfect, both the orange Tolex a la Fender or a oil finish will suit this nice and well made cabinet
Looks perfect, both the orange Tolex a la Fender or a oil finish will suit this nice and well made cabinet
Thanks @diyiggy ! 😉
Well yes, by far the angles are the most difficult part to Tolex neatly because of their hemispheric rounded shape - often, SuperGlue helps here for finishing :
Oh, and the wood of the cabined was pine, and wasn't looking good at all for a natural finish
... Unlike Beechwood like below 😎 :
Wait and See... 😀
A+!
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Simulation : maybe I'll change the "Pistachio Candy Crush" control panel plus Fender Strat knobs... 😕
A+!
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First listening tests in monophony :
Verdict :
The sonic result is consistent, no noticieable oddity in frequency range or phase perception at the first ear. No lack or excess. Good tone, good damping... 😎
The Visaton W170S8 WF is a solidly built but rather cheap performance unit :
- Fs=36Hz of the specs is 44 and 46Hz in reality, even after serious break-in.
- Efficiency is 86 dB, and much lower than the TW and MR (see L-Pad settings).
I will replace them by a Monacor SPH-170 WF, having same dimensions but better performance (Fs=38Hz, N=90dB, larger magnet). The simulations show a 10Hz F3 extension, with a better efficiency and similar damping. The SPH-170 is an affordable compromise at 41 Euro the unit...
Wait and See... 😉
Verdict :
The sonic result is consistent, no noticieable oddity in frequency range or phase perception at the first ear. No lack or excess. Good tone, good damping... 😎
The Visaton W170S8 WF is a solidly built but rather cheap performance unit :
- Fs=36Hz of the specs is 44 and 46Hz in reality, even after serious break-in.
- Efficiency is 86 dB, and much lower than the TW and MR (see L-Pad settings).
I will replace them by a Monacor SPH-170 WF, having same dimensions but better performance (Fs=38Hz, N=90dB, larger magnet). The simulations show a 10Hz F3 extension, with a better efficiency and similar damping. The SPH-170 is an affordable compromise at 41 Euro the unit...
Wait and See... 😉
Nice build!
Just from looking at the XO I'm thinking mid with 0,22mH & 6,8uF could cause a bit of a low impedance dip? Have you simulated or measured the impedance?
Just from looking at the XO I'm thinking mid with 0,22mH & 6,8uF could cause a bit of a low impedance dip? Have you simulated or measured the impedance?
Thanks @Rallyfinnen ! 😉
The MidRange speaker is a 4 ohm unit, not a 8R.
No : for the moment I only did basic calculations, just to evaluate the sonic result and listen if there was no obvious to unacceptable tone flaw.
But yes : I'll do measurements and simulations with my Audio softwares to detect if something is wrong or subject to improvements.
When you speak about a bit of a low impedance dip : would you explain further your idea ?
This evening : stereo listening, since I have built a 2nd crossover (a bit more tidy 😀 ) :
A+!