Looking for a plan for a simple mid/high-end 2-way, Audio Physic style

Hi guys!

Currently I am enjoying a pair of 'old' ScanSpeak events. A beautiful TL 2-way design with a very deep and tight low-end and crisp highs.

I love'em, they sound great! But, I like building so I'm starting to think about something new.

We've moved to a new house and the deep low-end of the Events now sometimes is a bit too much.

I'm looking for a narrow 2-way tower design (Audio Physic?) that won't break the bank. I need to sell the event's and sadly they are not much more worth than $400. So that kinda is my budget.

Are there any plans out there that suit my needs? I can't design my own crossover so I need something to replicate ;)

Oh, and sorry for my english, I'm Dutch! :)

Cheers,
Jasper
 

jReave

Member
2012-10-30 4:34 pm
Your English is fine.

Those Scan drivers should probably sound very fine. Shame you think you have to get rid of them. May I suggest in the interim that you add some stuffing to the TL to tone down the bass.

For something new and narrow (6" to 7"?) and something that doesn't have to go too low you are likely to need a design with a 5" high quality/high value midwoofer. You don't necessarily even need a floorstanding speaker to meet those requirements - a "bookshelf" speaker might do handily although you can always turn a bookshelf design in to a floorstander with unused interior space below or filled with sand perhaps.

I wonder if you could make something with a Scan Revelator fit into your budget? Is that $400 US or $400 Euros?

Revelator-4R

If not, you might also look for designs using ScanSpeak Discovery, SB Acoustic and Peerless HDS drivers.

Here are 2 good sources:
DIY-Loudspeakers
Humble Homemade Hifi
 
Wow, thanks for the detailed reply! As far as the budget; 400 euro's is indeed where I'm looking at... I can always try to source drivers on the second hand market.

I'll dig through the links to see if there's something that suits my needs.

I've also been looking at the MarkAudio fullrange units... An Alpair7 looks interesting, especially if I can squeeze it in a narrow floorstander, possibly combined with a cheap Rell Quake subwoofer. (With narrow I mean that I do not like cabinets that extend much wider than the driver)
 

eriksquires

Member
2013-05-10 4:11 pm
First, for parts in the EU, try them:

Fidelity components shop - Fidelity Components Shop

Absolutely great prices on high-end drivers. I may order from them soon, and just wait the 4-6 weeks delivery. :)

As for designs, I like anything 2-way with ScanSpeak 6.5 or larger mid-woofers. In that way you can look at kits from Zaph and others at Madisound. Absolutely great bass.


Best,

Erik

Hi guys!

Currently I am enjoying a pair of 'old' ScanSpeak events. A beautiful TL 2-way design with a very deep and tight low-end and crisp highs.

I love'em, they sound great! But, I like building so I'm starting to think about something new.

We've moved to a new house and the deep low-end of the Events now sometimes is a bit too much.

I'm looking for a narrow 2-way tower design (Audio Physic?) that won't break the bank. I need to sell the event's and sadly they are not much more worth than $400. So that kinda is my budget.

Are there any plans out there that suit my needs? I can't design my own crossover so I need something to replicate ;)

Oh, and sorry for my english, I'm Dutch! :)

Cheers,
Jasper
 
Your ScanSpeak Event speakers use the D2905/9300 dome tweeter and TL-loaded 18W8535 midbass, both EXCELLENT SPEAKERS.

We can explore creating a small sealed volume for the 18W8535 midbass in the Event cabinet, and adding an 8" or 10" side woofer to the Event cabinet with a true 3-way crossover. Removing the TL bass loading from the18W8535 will significantly increase midrange details and dynamics with a well constructed sealed alignment. The top TL exit can be sealed, and a tuned front port added.

If you decide to pursue this path, I suspect there are proven 3-way crossovers on the web for the D2905/9300 + 18W8535 + woofer.

A high sound quality/cost woofer like the $99 8" SBacoustics SB23NRX45, or even the $140 10" SB29NRX75 could be mounted on the 333mm side panel, as well as a selection of Scan Speak woofers. A baffle step compensation control circuit/switch for the separate woofer allows bass balance for different room/wall placements.

There may be a clever way to use the new large woofer hole in the side panel to glue in the wood to seal up the 18W8535 midbass. They put ships in a bottle :)
 
Reduce....Reuse....Recycle....Rejoice!

Your ScanSpeak 18W8535 is an excellent modest 85 db/watt efficiency woofer, with an F3 or 26Hz in a 1.8 cuft ported volume.(2.5" diameter pipe, 8.5" long with safe port resonance of 800Hz) Room/wall gain will boost in-room bass SPL.

EveryBody has positive comments on the Satori 6.5" midrange 6½” SATORI MW16P-8. Should fit into your Event front baffle. ~115 Euros ~$140 USD

Maybe....rebuild your Events T=D2905/9300, M=SATORI MW16P-8 sealed, ScanSpeak 18W8535 ported side woofer with some baffle step adjustment switches for room/wall placement.

"We live in the midrange" buy a good one..... common quote
 
As ever, these questions are about doing the homework! :D

I'm not quite clear what the difference between the Mk 1 and Mk 2 crossovers might be, but this looks a bassy big speaker to me.

Big heavy 6" paper cone with a Fs of 25Hz and huge Vas of 60L:
http://www.scan-speak.dk/datasheet/pdf/18w-8535-01.pdf

I'd expect that to run out of excursion at lowish volume and sound a bit flabby. Big 2.7mH bafflestep coil too. Smaller might be better for less bass balance. Maybe 1.8mH or just unwind about 20% of the turns, and brighten up the top end with a 2.7R series resistor. Otherwise looks OK.

It's a closed box driver, as it goes, so a lot to be said for stuffing the QWTL vent with old socks. TBH, that is so easy it's worth trying. Might sound a whole lot better. :)
 

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For the time being I do think that I'm going for a simple Fullrange floorstander.

The $200 Tang Band W8-1808 performs very nicely in a MLTL alignment, with a few modest cabinet size options. I have two pairs in bedrooms. An 8" generates rich vocals plus some bass power.

======medium 3.3cuft volume MLTL design: F3 ~45Hz
MLTL -- internal 48"H x10"W x12"D mount driver center 12" down from the top and use a 4"dia x2" long port 5" up from bottom. 0.5 lb/cuft stuffing down to port, then 1lb/cuft below port. When positioned away from the wall baffle step compensation of 2.5 mh coil in parallel with an 6 ohm resistor can help.