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| Small Tone come in Small Package... http://diyaudioprojects.com/Forum/viewtopic.php?f=11&t=6876 |
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| Author: | tubelectron [ 10 Aug 2020, 07:20 ] |
| Post subject: | Small Tone come in Small Package... |
Small Tones comes in Small Packages... A small 3-Way project with salvage loudspeakers : WAF-3W  The speakers - tweeter is missing for the moment :  The boxes - sealed enclosure (QTC=0.77), maybe convertible into bass-reflex (?) - to be studied :  The midrange back cover bricolage :  Wait and See...  -tbln |
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| Author: | tubelectron [ 12 Aug 2020, 16:22 ] |
| Post subject: | Re: Small Tone come in Small Package... |
Well... Why not using an infinite baffle in the Kyzylkum desert, finally ?  Cheers ! -tbln. |
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| Author: | gofar99 [ 13 Aug 2020, 10:48 ] |
| Post subject: | Re: Small Tone come in Small Package... |
Hi, Looks nice. It has become really amazing how good smaller speakers can sound now. Even the really tiny ones with 60-100mm cones can actually sound nice. The disadvantage is physics. They are inefficient. I have seen values in the 75 dbw range on some. However since class D amps are quite powerful and small it is not so much a problem as before. Your build looks nice. Personally I'll keep my electrostatics and 205 liter subs  even if they hog a goodly chunck of my listening room.Good listening Bruce |
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| Author: | tubelectron [ 14 Aug 2020, 15:03 ] |
| Post subject: | Re: Small Tone come in Small Package... |
gofar99 wrote: Hi, Looks nice. It has become really amazing how good smaller speakers can sound now. Even the really tiny ones with 60-100mm cones can actually sound nice. The disadvantage is physics. They are inefficient. I have seen values in the 75 dbw range on some. However since class D amps are quite powerful and small it is not so much a problem as before. Your build looks nice. Personally I'll keep my electrostatics and 205 liter subs even if they hog a goodly chunck of my listening room.Good listening Bruce Thanls @gofar99 !  Yes that's true : the offer in small good sound sounding speakers is great now... But yes also : the laws of Physics remains the same. In the past, I built some monsters, but finally dismantled and sold them to a pal who has a large room to reveal their potential :  Because it's another issue of Physics for me : my listening room is very small... Fortunately, the sound is very good in it, thanks to non-parallel walls and ceiling, furniture and mess !   So with the exception of my Magnepan SMGb and my Klipsch Heresy I HBR (with modded Xover) that are a little big, the rest of my DIY speakers (and amps) are rather compact : WAF-2W using Audax Speakers :  Triangle T17FL2 full-range 7" speaker in Beech wood enclosure :  Hence the current WAF-3W project here... Frontface disposition is defined :  I extended from 0.3L to 0.6L the back cover of the 3" full-range that I use as a midrange, and finally choose PVC for a more reliable glueing with time :   Oh, and the tweeters by Philips :  The cablinets will be Tolexed in "Levant Orange" (sides) and "Ivory White" (top, bottom, front, back) :  These enclosures are sealed - bassreflex convertible by simply plugging the 63mm vent :  Here is a simulation showing what can be expected :  Wait and See ! -tbln. |
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| Author: | tubelectron [ 16 Aug 2020, 13:31 ] |
| Post subject: | Re: Small Tone come in Small Package... |
Today, presenting the loudspeakers on the box - once drilled but unfinished :  -tbln. |
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| Author: | tubelectron [ 23 Aug 2020, 16:49 ] |
| Post subject: | Re: Small Tone come in Small Package... |
I Tolexed the cabinets today : Ivory White and Levant Orange. Some touch-ups are required to finsh the corners.  Quick look on speakers presentation : Fonky, Unseen or... Both ?.  Next steps : mounting, stuffing, speaker measurements in enclosure, crossover determination... Wait and See, -tbln. |
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| Author: | tubelectron [ 29 Aug 2020, 06:03 ] |
| Post subject: | Re: Small Tone come in Small Package... |
work is on progress (nameplate simulation) : Including for Tolex scraps  : -tbln. |
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| Author: | tubelectron [ 06 Sep 2020, 14:59 ] |
| Post subject: | Re: Small Tone come in Small Package... |
Yesterday evening, first test in mono :  Verdict : - No noticeable tone flaw, good damping (low alignment factor n=2.45) and bass level, correct tonal balance. - The Visaton W170S8 is a ruggered but not premium performance speaker  : Fs appears to be 44 and 46Hz instead of 36He specs, efficiency is 86dB specs, much lower than the tweeter and midrange (see L-Pads settings pic below).I plan to replace the W170S8 by a Monacor SPH-170 of same dimensions but better performances : Fs=38Hz and N=90dB, larger magnet... The simulations show a 10Hz gain on F3 for a similar damping (n=2.78). A good compromise for a 41 Euro unit ! Of course, other speakers could be used like ScanSpeak 18W_8545-01-8 or 18WU_4747T00-4, or SATORI_MW19P-8, but this is not at all the same budget ( 160 to 250 Euro unit). Crossover : note that the MidRange speaker is a 4-ohms unit.    I tested different vent configurations : all are interesting alternative, depending on speaker placement...  This evening : stereo listening since I built another corssover (more tidy...) :  I'll make measurements with my audio software to detect unnoticed flaws or paths of improvements. Wait and See... -tbln. |
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| Author: | tubelectron [ 15 Sep 2020, 15:49 ] |
| Post subject: | Re: Small Tone come in Small Package... |
Woofer change : Visaton W170S8 ----> Monacor SPH-170/8  Larger magnet, lower Fs, higher BL, slightly lower QTS (0.44 vs. 0.47), more efficiency (90 vs. 86dB/W/m)...  More percussive with better damping, smoother and deeper bass response and extension. This is not tremendous, but nonetheless very noticeable. A good improvement for a 82 Euros investment -tbln. |
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