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Old 19th May 2003, 07:20 AM   #1
jvsb is offline jvsb  Slovenia
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Default DIY speakers for 300B suggestions?!

Hallo all,

I have just finished building a 300B amplifier. Now I would like to build a pair of high efficiency speakers for it. Can you give me any suggestions what should I build?

Thank you very much.
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Old 19th May 2003, 09:41 AM   #2
SDF is offline SDF  France
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You have a big choise, two goods are:

Fostex (specially FE206E and FE166E) mounted in bass-reflex or double BR cabinet.

PhyHP, really good but really expensive too, could be mounted in open baffle.

An alternative is Lowther but the Fostex (with a good cabinet) are quite good.
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Old 19th May 2003, 01:29 PM   #3
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I've been searching for the best speaker match for my 300b for 5 months now. Here's the summary of what i found out...

First i thought Lowthers or Fostex full rangers, but then i've heard people say they are a very aquired taste. Seems easy enough to build...no crossover to worry about.

Then I was thinking about building a set of Ariels. People seem to rave about these almost as much as the lowthers or fostex. 93dB efficiency...and decent bass response too.

Then i was onto the Line Array kick....they looked cool, had good efficiency, seemed easy enough to build....but i heard some comments that wow they are cool at first, after a while you begin to notice that they seem blurry...not precise.

Then i heard great things about Horns....so i got the plans to the Klipsch La Scala..and was going to build one of these and find the Klipsch drivers to fit inside. This idea went sour when i found that the only way to still get the Klipsch drivers was on ebay, since they discontinued all but the 15".

So last thursday i was checking Ebay, and the local classified for stuff i might want, and there were a set of Klipsch Cornwalls for sale locally. The price was right, so i went and bought those....

I'm amazed with them. They should almost be illegal, as they've caused me to sit in my listening chair and play countless albums one after the next. I've never heard such clarity before, ...i really focus on upright bass parts; especially solos by Mingus or Ray Brown. During fast passages you can actually hear every note they play; my B&W's were muddy..boomy.. and would just cloud all the notes together. Can't beat the efficiency...which i've heard is anywhere from 98-106 depending on who you ask.

Anyways, my vote ( which doesnt count for much since i hadn't built the ones i mentioned above ) is to build a set of horns, or find a pair used. I've been hearing everyone talk about Klipschorns and Altecs, and never paid much attention.....but now my eyes are open.

-Maz
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Old 19th May 2003, 04:21 PM   #4
Variac is offline Variac  United States
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There is a company around that is well known for their Klipsch crossover upgrades which are reputed to make a HUGE difference! Imagine how good that is!! The Pass Labs folks seem to like 'em a lot.
Maybe you can find them with a search of DIY audio on "klipsch"
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Old 19th May 2003, 05:30 PM   #5
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Default Pi Speakers???

I have not heard these but they get some good reviews.

Maz, did you consider these designs (horns)?
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Old 19th May 2003, 05:41 PM   #6
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I had not seen them formerly, but their site looks good...the kits seem cheap enough. How can you lose?

Variac : the company you are referring to ( i think ) is ALKengineering. He sells built replacement crossover networks for all the Legacy line of Klipsch speakers...as well as has all the plans on his site with parts lists so you can build them yourself. I'm going over the plans right now, and perhaps i will upgrade to these Xovers in a few months. Luckily i purchased a pair of Cornwall 1's and not Cornwall 2's as i had previously thought...so mine are indeed mod-able with this upgrade. The only problem i can see is that it changes the impedance of the speaker from 8 to 4 ohms. Not a problem for my amp, but i suspect it will increase the noise floor as everything should get louder.

My amp and preamp are already sitting at 1/10 on the knobs...i'm going to have to put heavier attenuators.

-Maz
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Old 19th May 2003, 05:44 PM   #7
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Quote:
Originally posted by Variac
There is a company around that is well known for their Klipsch crossover upgrades which are reputed to make a HUGE difference! Imagine how good that is!! The Pass Labs folks seem to like 'em a lot.
Maybe you can find them with a search of DIY audio on "klipsch"
http://www.alkeng.com/klipsch.html

The jury seems to be out on these. I've heard just as many negatives as positives, but the design is free, and if you do a good job and build them well, and don't like the sound, they should be saleable.

Maz. Glad to hear your liking the Cornwalls. I have some mod suggestions, but can't seem to find where I've put the data. I'll email it on when I do.

Horns rule.
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Old 19th May 2003, 05:55 PM   #8
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Just scored a pair of Klipsch Hereseys. They are playing right now.

If you are looking at the Pi speakers you should also be looking at the Adire HE 12./10.1. These have the same family heritage as the Pis, but a lot more work has been put into the XO, and other details.

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Old 19th May 2003, 05:59 PM   #9
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at the very least i have to change the speaker posts on the back of them as they just have the single screw-terminals.... I just spent an entire weekend building cat5 cables with BANANA posts on them....i had to unscrew the terminal screw all the way out, then fit the banana post underneath the screw.

as shown
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Old 19th May 2003, 06:04 PM   #10
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a pic of my livingroom with the B&W's out, and the Klispch Cornwalls installed.

Don't give me hell about having the CD player on top of the speaker...i'm getting a new glass stand to put all the components on, under the TV.
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