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Multi-Way Conventional loudspeakers with crossovers

Klipsch Forte Crossover
Klipsch Forte Crossover
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Old 25th December 2016, 06:59 PM   #1
Chuckstereo is offline Chuckstereo  United States
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Default Klipsch Forte Crossover

Merry Christmas and Happy Holiday.

This is my first time on diyAudio and my first time building this Klipsch Forte crossover. The crossover build kit along with midrange and tweeter diaphragm upgrades for the Forte was purchased from Critespeakers.com.
I have followed the Klipsch Forte crossover diagram and then laid out my board designed that follows the original design and after putting the speaker back together, I've found the soundstage is not present like it was before I've replaced the original crossover.

I wanted to see if anyone can see a fault with my crossover rebuild or maybe a way that I can test the crossover build.

Thank you, Chuck
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File Type: jpg Forte-Xcrs.jpg (482.8 KB, 161 views)
File Type: png forte.png (35.1 KB, 102 views)
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Old 15th February 2020, 12:14 AM   #2
Topping is offline Topping  United States
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A 1uf Capacitor on the mid driver is definitely not good.

The mids can be improved with 3.0uf and 6ohm resistor 20 watt.
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Old 15th February 2020, 01:05 AM   #3
planet10 is offline planet10  Canada
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Klipsch Forte Crossover
moved to the multi-way forum.

dave
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Old 15th February 2020, 01:13 AM   #4
planet10 is offline planet10  Canada
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The 1uF cap is the high pass on the mid. If it is a nominal 8Ω driver that means response below about 20kHz is being rolled off at 6dB /octvave. If it was 10uF it would probably be in the ballpark for a 4Ω mid driver.

dave
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Old 15th February 2020, 01:21 AM   #5
AllenB is offline AllenB  Australia
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Klipsch Forte Crossover
Do both sides sound the same level, and same response? Does each driver sound reasonably balanced with the others? Have you tried changing polarities? Can you measure?
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Old 16th February 2020, 08:43 AM   #6
Topping is offline Topping  United States
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Get the midrange out of the woofer inductor
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Old 16th February 2020, 09:21 AM   #7
Lojzek is offline Lojzek  Croatia
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Not that it's relevant anymore to OP, but can someone explain who has designed the upgrade xo filter? Original xo frequencies are about 650Hz and 5.2kHz.
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Old 16th February 2020, 05:10 PM   #8
Topping is offline Topping  United States
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Can someone give a explanation of a speaker transformer.... i would bypass that mess and locate a small tweeter(ground shunt)INDUCTOR , for the midrange .35mh oh so is fine , preceded by 4uf capacitor. Adjust the output with a 20watt ground resistor(like the tweeter is using 40ohm) anywhere from 15ohm to 50ohm. If you play them loud consider putting midrange driver back in standard PHASE.now the forte 1 will sound fantastic.
cheers everyone.

Last edited by Topping; 16th February 2020 at 05:36 PM.
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Old 16th February 2020, 07:44 PM   #9
planet10 is offline planet10  Canada
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Quote:
Originally Posted by Topping View Post
Get the midrange out of the woofer inductor
Each leg of the circuit is completely separate. The woofer inductor does not affect the midrange.

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Old 16th February 2020, 07:51 PM   #10
planet10 is offline planet10  Canada
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Quote:
Originally Posted by Topping View Post
Can someone give a explanation of a speaker transformer...
I beleive it is an autoformer used like an L-Pad to adjust the output level. Commonly seen in Tannoy XOs and in the LS3/5A as well

Klipsch Forte Crossover-chartwell-ls3_5a_xo-png

dave
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