Crossovers - where to start? - Page 10 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #91 of 157 Old 02-22-13, 02:45 AM Thread Starter
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Re: Crossovers - where to start?

The thread jumps around a bit, scroll back to post #52.

If you like the sound of a "small 2-way" these are really working well.

Big Bold sound!!!

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post #92 of 157 Old 02-22-13, 01:37 PM
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Re: Crossovers - where to start?

I've got a bunch of two ways and some 3 ways. I've been experimenting for years.
I'm always looking for new driver combinations and my current duo, Beyma/Tang Band, looks the best so far . . . . on paper.
I've decided lately I need to play louder, don't know why except one of my buddies came to visit and wasn't impressed by my mains. He thought they should play louder. I measured them at 102db at + 6 on the receiver. they were beginning to stress at that volume. That speaker has a 6.5" woofer and a Seas tweeter.
So now I'm working with the Beyma 10" and the Tang Band Tweeter. The Beyma is louder than the 6.5 woofer in free air. The Beyma "sound" is very pleasing to my ear. I'm working on the x-over trying to use as few parts as possible and using the best caps, coils, and resistors I can afford.
I'm one of those DIYers that thinks there IS an audible difference between one capacitor and another. Coils and resistors, of course, can reduce the driver output so a coil with fatter wire offers less resistance.
I'm thinking I can eliminate a BSC (baffle step compensation) by reducing the nominal size of the ported enclosure PLUS tuning the box higher than the Fs of the driver by a slight bit. According to WinISD the upward slope of the driver response as the Hz goes down in a smaller box tuned a little higher would match the upward slope produced by a BSC. Less parts in the signal chain is a good thing. Less parts to add distortions or coloration.
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post #93 of 157 Old 02-22-13, 04:12 PM
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Re: Crossovers - where to start?

Capacitors can play a big part in the sound of a speaker.
When I made my speakers (A long time ago) there was not the selection of high quality ones that are available today. Interestingly a supply of low cost, high quality, high voltage caps were readily available right under our noses - fluorescent light power factor capacitors!

Silence is golden but duct tape is silver.

DIY completed:

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post #94 of 157 Old 02-22-13, 04:20 PM
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Re: Crossovers - where to start?

Quote:
robbo266317 wrote: View Post
Capacitors can play a big part in the sound of a speaker.
When I made my speakers (A long time ago) there was not the selection of high quality ones that are available today. Interestingly a supply of low cost, high quality, high voltage caps were readily available right under our noses - fluorescent light power factor capacitors!
`
LOL, I've never used a fluorescent light capacitor for anything but the light.
What is the Mf rating if you know? I'm guessing the voltage would be somewhere around 200V.
AND as far as their being right under our noses . . . . well maybe if you're Karrem Jabbar.
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post #95 of 157 Old 02-22-13, 04:56 PM Thread Starter
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Re: Crossovers - where to start?

Certainly the tweeter cap(s) can make a difference - I draw the line here though:

e.g.
http://www.madisoundspeakerstore.com...ropylene-caps/

A good three way will sound better than a 2-way, can't beat t good mid range. However, I still like the small front on two way; I really enjoy imaging!!!

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post #96 of 157 Old 02-22-13, 05:04 PM
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Re: Crossovers - where to start?

Quote:
ISLAND1000 wrote: View Post
`
LOL, I've never used a fluorescent light capacitor for anything but the light.
What is the Mf rating if you know? I'm guessing the voltage would be somewhere around 200V.
AND as far as their being right under our noses . . . . well maybe if you're Karrem Jabbar.
I have a 2.8 uF and 4.0 uF 440 VAC along with a 32uF 330 VAC (we run 240 VAC mains here)

Silence is golden but duct tape is silver.

DIY completed:

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post #97 of 157 Old 02-22-13, 05:06 PM
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Re: Crossovers - where to start?

I consider Clarity Caps very good.
Good performance.
Good quality build.
Reasonable price.
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post #98 of 157 Old 02-22-13, 05:08 PM
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Re: Crossovers - where to start?

Quote:
robbo266317 wrote: View Post
I have a 2.8 uF and 4.0 uF 440 VAC along with a 32uF 330 VAC (we run 240 VAC mains here)
`
Oh yeah, I forgot you're down-under.
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post #99 of 157 Old 02-22-13, 08:31 PM Thread Starter
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Re: Crossovers - where to start?

This foil Goertz inductor was only $3 more than the wire wound; same awg.

The bass is tighter, however, it's raining here so hard to tell really.

(BR boxes sound deeper when it rains)

EDIT: watched some moves last night, really great tight bass, subwoofer sound.
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post #100 of 157 Old 02-24-13, 06:17 AM Thread Starter
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Re: Crossovers - where to start?

New construction Pic

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