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Old 13th March 2008, 08:53 AM   #601
Steve M is offline Steve M  Australia
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Hello ttan,

Thanks for the kind words...

I mentioned that the power supply is tricky (for novices only) and is a disclaimer for people looking at my Audiogon page - I don't want anybody electrocuting themselves on my account.

http://forum.audiogon.com/cgi-bin/fr...146370182&view

The Lowther threeway is fabulous, it is very transparent and communicates the music well. I agree that all FR drivers need help with bass hence the Eton TL woofer boxes. However, the treble response from the DX-3 is 98% satisfactory and the Raven is there just to sweeten things up and give a bit more extension and air.

As to building a two way speaker, in my experience the Lowther DX-3 just about beats any conventional cone drivers I've heard. And, I've heard some pretty good ones (as you can see from all the pics on my Audiogon link). I know people may not agree with me, but the Lowther sounds more accurate, faster and produces decay notes better than most cone drivers.

The Lowthers just don't sound boxy at all and, their point source attributes instantly connects you with the musicians, normal speakers (except planars) struggle to do this unless they are a top-notch design with the most expensive drivers. Taken in this context, the Lowther present good value and takes you from A-Z in hi-end terms almost instantly, there's no mucking around with crossovers nor do they need humungous expensive amplifiers(the humble Gainclone is excellent with them)). Of course all just IMHO ...

Regards,

Steve M.
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Old 23rd March 2008, 05:50 PM   #602
tubee is offline tubee  Netherlands
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Default Finally simple cheap car chipamp ready

Had a TDA1552Q lying around unused and got 1 pair of 12inch 4ohm paper woofers with reasonable small magnet, i decided to build a simple chipamp with it for the woofs.
I can choose a lineair output or active (TL072) filtered output @100Hz.
Cooler from a server, case from doorstep profile nice laquered, good filtering with panasonic and wima caps, gold plated cinches, simple and very small. Made a simple clip indicator with a red led, powered on speaker output with a rect. diode, 4.7V zener and a 2.2uF across led, it even works!
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Old 5th April 2008, 01:27 PM   #603
ratza is offline ratza  Romania
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Two months of work and the case is still not finished, I need to put black 3mm HDF on all the sides. Volume knob is made out of a spray cap.

So, here are the front and back panels...
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File Type: jpg back and front panels.jpg (96.8 KB, 4078 views)
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Old 5th April 2008, 01:28 PM   #604
ratza is offline ratza  Romania
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... rear ...
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File Type: jpg back.jpg (72.6 KB, 3896 views)
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Old 5th April 2008, 01:29 PM   #605
ratza is offline ratza  Romania
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... front ...
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File Type: jpg front.jpg (74.2 KB, 3118 views)
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Old 5th April 2008, 01:32 PM   #606
ratza is offline ratza  Romania
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... powered up for testing if everything is right ...
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Old 5th April 2008, 01:37 PM   #607
ratza is offline ratza  Romania
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... and inside the beast, 400VA toroid, 2 LM3886, 3 x 4700uF per rail, +/-30V power supply, 2x22k log russian pot with loudness correction (works very good). Schematic was taken from Rod Elliot's site and only some minor adjustments were made. Noise and hum are not audible, even if I stick my head on the speaker (92dBm). Everything was made on veroboard.
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Old 13th April 2008, 12:19 AM   #608
gninnam is offline gninnam  United Kingdom
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Default Re-Cased a recent build

Had alot of complaints on another forum about the case so decided to re-do it!
Used an USB Disk drive case as it was a very good fit....
Hope you like:

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Pics not brill as wife has decent camera
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Old 13th April 2008, 06:35 AM   #609
ratza is offline ratza  Romania
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It looks very nice. What's inside?
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Old 13th April 2008, 02:05 PM   #610
gninnam is offline gninnam  United Kingdom
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Quote:
Originally posted by ratza
It looks very nice. What's inside?
Cheers - used a kit from Audiodigit - http://www.audiodigit.com/index.php?section=106

Will get a proper torroid, but using a PSU from a laptop!
Got it plugged in to an old Audiolab 8000A using it in power amp mode, so getting the 'tube' sound added - sweet.


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