Usher 7" 2-way

[LukeDuke]

hey all,
i'm putting together a nice classic floorstanding 2-way using the 7" Usher 8945P and the 1" Usher 9330 tweeter. The enclosure is a vented rectangular tower with two lower sealed compartments for the crossover and sand for stability. The tweeter will be mounted on top in a classy open baffle configuration. As far as the cross over is concerned i am thinking a LR4 at 2k, but i'm not really sure. Below are the response graphs from each of the drivers, if anyone has any crossover suggestions or enclosure ideas/concepts/suggestions or past experience with these drivers please share with a post, thank you, Luke Richard

[R-Carpenter]

My last bookshelf.
Man! I thought I was original in My way of thinking!

[TerryO]

Originally posted by LukeDuke
hey all,
i'm putting together a nice classic floorstanding 2-way using the 7" Usher 8945P and the 1" Usher 9330 tweeter. The enclosure is a vented rectangular tower with two lower sealed compartments for the crossover and sand for stability. The tweeter will be mounted on top in a classy open baffle configuration. As far as the cross over is concerned i am thinking a LR4 at 2k, but i'm not really sure. Below are the response graphs from each of the drivers, if anyone has any crossover suggestions or enclosure ideas/concepts/suggestions or past experience with these drivers please share with a post, thank you, Luke Richard

Luke,
What is the purpose of the "classy open baffle configuration" for the tweeter? If I'm not mistaken, the Usher tweeter is a sealed unit and you'll realize no or little benefit. IMHO, you'll just end up having some ugly wires hanging out there.

I may not understand what your purpose is, so please feel free to elaborate.

Best Regards,
TerryO

[peter_m]

Food for thought...

http://murphyblaster.com/content.php?f=usher2way.html

http://www.markk.claub.net/usher_index.htm (has been down for the last 24h)

http://www.geocities.com/woove99/Spkrbldg/Usher_701.htm

http://www.geocities.com/woove99/Spk...Usher_2way.htm

Peter

[ttan98]

Originally posted by LukeDuke
hey all,
i'm putting together a nice classic floorstanding 2-way using the 7" Usher 8945P and the 1" Usher 9330 tweeter. The enclosure is a vented rectangular tower with two lower sealed compartments for the crossover and sand for stability. The tweeter will be mounted on top in a classy open baffle configuration. As far as the cross over is concerned i am thinking a LR4 at 2k, but i'm not really sure. Below are the response graphs from each of the drivers, if anyone has any crossover suggestions or enclosure ideas/concepts/suggestions or past experience with these drivers please share with a post, thank you, Luke Richard

I have 8945 and 9950 usher 2-way in MLTL box, the freq can go really low.

Sounds good, driven by chipamp, over active x-over. The speakers costs me about $280 drivers only.

[ucla88]

Originally posted by peter_m
Food for thought...

http://www.markk.claub.net/usher_index.htm (has been down for the last 24h)

Peter

Ahh, but to be reborn from the ashes tomorrow...

[LukeDuke]

Thanks to everyone for your responses.
I've been working on the design a little bit over the past couple days and am debating between vented or folded line enclosure. The TL speaker will have its "vent" on the top of the speaker, directly behind the top mounted Usher tweeter that will be phase aligned. I am considering going with the TL because their flexibility of room placement with the top mounted vent makes it an attractive design for on/near wall placement. Looking at the "Optimo" floorstanding design on Humblehomemadehifi.com, the designer seems to have met with some success. Along with the enclosure debate, i don't have much of a clue in regards to the crossover. Given the following set up please share any suggestions/recomendations:

Usher 2 way TL floorstander:
7" Usher 8945P 8ohm
1" Dome Usher 9930 8ohm
Crossover point: 2000/2200
Line length: 60"
with a 16.2x9cm opening/vent on the top of the speaker, behind the tweeter

If their are any recommendations, please share, cheers, Luke

[peter_m]

Here is Mark's new website and his Usher design fi you need some inspirtion: http://www.audioheuristics.org/proje...sher_index.htm

[Jay_WJ]

Are you aware of this design?

http://members.fortunecity.com/pirim...-u2/KM-u2.html

The 9950 tweeter is interchangeable with the 9930 without much effect on the system's frequency response.

[jheoaustin]

Sorry to ask an irrelevant question to this thread, but does anybody know if I can mount 8945A into the speaker which had 18W/8545 before? I looked at the mechanical drawings of both drivers, but couldn't figure out if I can do it.