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Chip Amps Amplifiers based on integrated circuits

This is not just another gainclone
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Old 11th April 2003, 02:08 PM   #1691
Nuuk is offline Nuuk  United Kingdom
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Quote:
Some more info from Thorsten:
One day I'll ask a question about magnetic fields on Pluto and somebody will point to an article on that topic written by Thorsten

I have long thought this to be not one person but a team of 10-20 people, working 24/7 replying to all the audio forums on the net and writing articles for any publications that wants them. How does he do it?

Thanks again Fedde - interesting reading and time to knock up some more cables
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Old 11th April 2003, 03:58 PM   #1692
Asen is offline Asen  Bulgaria
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CAT5 is thicker than OTA - 0.5mm. I'm not sure it's pure copper. Maybe the CAT 5enh, which is 'halogen free' would give better results.

OTA is 0.4mm, oxigen free copper (OFC), single strand wire with thick teflon insulation. It's not twisted, but you could do so if you want. The essence is that it is a HQ telephone cable.

The way CAT5 affects the sound is more audioble when you use several strands - thin bass and harsh mids and highs. If you decide on CAT5 - use single strand only for best results. But one should expect more of a cable than CAT5 gives. Maybe it works well in the area it's expected to - in the MHz zone.

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Old 11th April 2003, 06:01 PM   #1693
planet10 is offline planet10  Canada
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This is not just another gainclone
Quote:
Originally posted by Asen
CAT5 -- not sure it's pure copper
From my understanding (talking to a network engineer) CAT 5 is very pure copper.

dave
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Old 11th April 2003, 10:29 PM   #1694
carlmart is offline carlmart  Brazil
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Default Using Cat-5

Quote:
Originally posted by 2Bak

I use 'em twisted. Can tell no difference on my present speakers if twisted or untwisted. For the time being these cables will do fine

Like the look and feeling of such thin cables.
And I have no problem with oscillation, whatsover...
Uses same lenght now, 3.5 meters each.

Are you driving woofers with that green/white cable?

If you do I'd say it might be a bit too thin.

Or do you mean you took a pair from a Cat-5 and that's what you're using?

It may sound fine at lower levels, like a few watts, and some tube amps driving horns were commented as sounding find. But serious levels requires wire area.

The principle behind Cat-5 based cables, and there are a few around, is using several isolated solid core wires twisted.

A friend of mine, who makes excellent loudspeakers, implemented Cat-5 braids using 3 and 4 cables. That is 12 and 16 pairs, which are seaparated in white and coloured groups for - and + phase respectively.

They sound excellent, but the amp has to be able to drive it.

Best listening reports on Cat-5 go for using more than twenty teflon pairs that you take away from the original pvc insulation and then braid/twist.



Carlos
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Old 12th April 2003, 06:58 AM   #1695
2Bak is offline 2Bak  Denmark
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Carlos, only two cat5 strands per channel, like on the pic !
I admit that bass/mid is thin, however my present speakers are weak in bass, so I cannot really judge...

See this post showing the TNT twisted cables that I tried usuccesfully on my CG.
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Old 12th April 2003, 10:05 AM   #1696
Nuuk is offline Nuuk  United Kingdom
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Farnell do a 0.4mm solid core wire with PTFE insulation but it is silver-plated. I may give it a try with the Gainclones but has anyone else tried a silver-plated wire for speaker cables?
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Old 12th April 2003, 10:22 AM   #1697
2Bak is offline 2Bak  Denmark
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Nuuk, LCAudio sells this silver coated Stripline, that I use for line level wiring. I don't see why this wire cannot be used as speaker cables...

Below see pic of some phone cable I had. This cable - to the left - is used for my 2Mbit ADSL connection. Note that each strand is one thick copper wire, whereas the Cat5 on the right has several thin copper wires. I believe this cable come closer to the wire used in the OTA cable...?

I have now made a speaker cable with this phone cable and maybe - after burn in - I'll get more bass, I dunno....

/Jan
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Old 12th April 2003, 10:26 AM   #1698
2Bak is offline 2Bak  Denmark
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...however LC Audio sells this cable as speaker cable, also silver coated...
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Old 12th April 2003, 10:30 AM   #1699
fedde is offline fedde  Netherlands
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I use solid core CAT5. It has high quality copper. Only the insulator is not so good. I wouldn't use stranded CAT5. It could be that single wires give less bass at higher volumes. But I am not so sure. The definition of less bass is not so clear too. Frequency wise not so much happens I guess. But the difference is in tightness. Tighter bass has less 'width' of the bass. Then it seems that there is less bass, but wait till you hear a church organ

I think that is the thing that people experience when they say the GC has too few bass. Some people prefer wooly bass (no offence!). In a disco or cinema I like fat bass. But a tight bass is more realistic....

Fedde
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Old 12th April 2003, 10:41 AM   #1700
2Bak is offline 2Bak  Denmark
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Fedde, do you also use this solid core CAT5 as your interconnects? Do you happen to know how the OTA IC's are made?

I'm sure bass is there. I have heard my gainclone on some very fine speakers (with other cables though), and it sounded really good

/Jan
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