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Multi-Way Conventional loudspeakers with crossovers

silk purse from sows ear contest?
silk purse from sows ear contest?
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Old 18th June 2018, 12:16 PM   #21
Pano is offline Pano  United States
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silk purse from sows ear contest?
Quote:
Originally Posted by Jerms View Post
Suggest using USA websites prices for drivers even if purchased elsewhere to price-match against native USA builders.
Very good idea! No matter what the price limit, USA online prices can be used as the basis.
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Old 18th June 2018, 02:03 PM   #22
KaffiMann is offline KaffiMann  Norway
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I know this may seem somewhat odd for many, but I would suggest the limit to be 30USD for US shops, and roughly 37EUR for EU shops.
If the 20USD limit is impossible to move, the limit should be 27EUR for European based shops. I know the direct exchange value does not even remotely add up, but it is more realistic for Real Life projects, and actual end cost (when shipping is added later on) would be more comparable, another point is that it would add more diversity in terms of driver choices/local brands for each contender.
It would also open the possibility for US participants to calculate EU prices on drivers from EU shops where that may be beneficial, opening up for different choices.
"Buy out" or "limited production" drivers should be banned, because it may limit people that want to build the "Winner" design after the contest, if the drivers that participated are no longer available.

Again, this may not make sense for everyone, but just my two cents to "balance it out" a little bit. The 30USD/37EUR per channel limit should be on drivers alone, but for 50% increased budget you could have the option to include amplifier AND filter costs, allowing more expensive drivers but dirt cheap amps, or expensive amps and dirt cheap drivers. Scavenging of cables, box material, dampening material and power supplies is legal and expected?

Edit:
And: US and EU shop prices can not be mixed ofcourse. Pick one continent.

Last edited by KaffiMann; 18th June 2018 at 02:08 PM.
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Old 18th June 2018, 03:23 PM   #23
Pano is offline Pano  United States
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Is 37 Euro enough vs $30? I'd think more like 40 Euro.
Good idea. And we'd need to figure a Pounds Sterling and an AUS $ limit, too.
The guys in Hong Kong might have a big purchasing advantage.
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Old 18th June 2018, 04:48 PM   #24
KaffiMann is offline KaffiMann  Norway
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I was trying to show restraint. :-P
40 euro is closer. But I have a reason for the 37 Euro limit!
The +50% for amps and filters should follow the value of where you purchase/calculate cost of the speaker drivers.
So you could calculate for instance get 37 euros/channel worth of speaker drivers in Europe, and use the remaining 50% to buy parts for amps+filters from any other place in the world.
Or get cheaper drivers from the US, but then you'd loose the equivalent of 3 Euro 50 Cents + the currency difference on parts for amps and filters.
Shipping still not included.

The limits for other currencies/locations would have to be adjusted accordingly. It is impossible to get it 100% equal, but it should be possible to at least even out the odds a little bit.


Should be higher score for complete systems.
37€ (or 40€?) vs 30$ per channel for speakers only. score *1
55.50€ (Or 60€?) vs 45$ per channel for a complete system (speakers, power stage and filters) sans pre stage. score *1.7

Prices have to be normal online prices, and a reference screenshot of shopping basket for all to see.

Last edited by KaffiMann; 18th June 2018 at 04:58 PM.
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Old 18th June 2018, 06:10 PM   #25
Pano is offline Pano  United States
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silk purse from sows ear contest?
OK, I'm in. I have some new drivers on the shelf doing nothing. About $18 a side, which leaves me just enough for simple crossovers.

Do we have to build an amp and PSU from scratch, too?
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Old 18th June 2018, 06:27 PM   #26
KaffiMann is offline KaffiMann  Norway
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psu + boxes + cables ++ = scavenge/dumpster diving.
Drivers + amp + xo = no other demands than to stay within budget. :-)

Last edited by KaffiMann; 18th June 2018 at 06:34 PM.
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Old 18th June 2018, 06:54 PM   #27
eriksquires is offline eriksquires  United States
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This as a full ranger. I believe I have seen it used in some floor to ceiling arrays quite successfully.

Peerless by Tymphany TG9FD-10-04 3-1/2" Glass Fiber Cone Full Range

Best,

E
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Old 18th June 2018, 07:44 PM   #28
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silk purse from sows ear contest?
I use its brother, the TC9FD frequently. Nice driver that doesn't care about box size, but doesn't play low.
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Old 18th June 2018, 07:50 PM   #29
KaffiMann is offline KaffiMann  Norway
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Unfortunately for me, I am barred from purchasing any more drivers, but there might be a way for me to participate, there are some parts laying around here.
Just have to find something that is currently in regular stock. Hmmmmmmm.
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Old 18th June 2018, 08:51 PM   #30
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added / edited $30 limit USD prices, or 37 EU prices for both sides of the pond.

As to amps and PSU - I would not think so. We should reiterate DSP /built in amp crossovers / tone controls etc should all be flat or off. Any DSP should be part of the $30 limit. This forces the dsp and crossover parts to come at the expense of cheaper drivers.
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