41hz Forum - Blogs http://www.41hz.com/forums/blog.php Discussion forum of 41Hz audio, on d-class amplifiers, Tripath based amplifiers. en Thu, 17 May 2012 13:29:40 GMT vBulletin 17 http://www.41hz.com/forums/images/misc/rss.jpg 41hz Forum - Blogs http://www.41hz.com/forums/blog.php Build Blog: AMP6-B in a Modushop case http://www.41hz.com/forums/entry.php?216-Build-Blog-AMP6-B-in-a-Modushop-case Sun, 22 Jan 2012 00:28:17 GMT As I moved from country to another with very little with me, my old sound equipment was mostly either sold or stored away. Only things coming with me... As I moved from country to another with very little with me, my old sound equipment was mostly either sold or stored away. Only things coming with me were my PS3 and the DVD/CD-player. Here I have bought a TV-set, but for the rest the idea was to build it myself.

So, there's a need for new sound equipment. I decided to start small, a decision that was helped with the fact that I had already soldered couple of AMP6-B:s together that were lying around. So all I needed to do was to mount one in a case bought from Modushop and pair it with an SMPS giving 13,5 V and 3A out.

And the result looks like this. Front side with input selector, power switch and volume control:

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Back side with three inputs, a power input XLR and banana output terminals. Next time I have to be more careful while drilling the holes, now there is some damage to the back plate coating.

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And the inside of the amplifier. The extra circuit is V-bro's delay circuit for sleep and mute control with a third transistor added to control the front plate's power LED.

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Well, there's not much to say about the sound yet, as my speakers are waiting to be finished. All I know that the amplifier works, it was tested with my test speakers (cheap car speakers mounted together with the 41hz's power resistor set). I have found out one little perk though: the amplifier is a bit too light for this power switch, it does need a little press with fingers to stay afoot when operating the power switch. The next amplifier won't have this problem...

I could present this to my colleagues at work and maybe someone of them might be interested to test it before I need it myself... ]]> tuo http://www.41hz.com/forums/entry.php?216-Build-Blog-AMP6-B-in-a-Modushop-case Build Blog: Power Supply http://www.41hz.com/forums/entry.php?215-Build-Blog-Power-Supply Sun, 22 Jan 2012 00:01:42 GMT At the moment I have two power supplies at my bench. Both of them can give out about an amp with output voltage between 1,25 V and about 15 V. When... At the moment I have two power supplies at my bench. Both of them can give out about an amp with output voltage between 1,25 V and about 15 V. When connected in series, the output can reach up to 30 V.

Sometimes that just ain't enough. I found a recipe for power supplies with LM317 and LM337 chips in one of my electronic books, so I started to getting ready to build a couple of those. The book presented a table of resistor values to build a one or two sided supplies with different preset voltages or adjustable versions with a potentiometers. Altogether I was thinking to build "enough" of them, two one sided and two two sided.

The first thing to come up that couldn't be handled with my current supplies was testing an AMP11 at 36 V rail voltage. To keep things simple I decided to build first a constant voltage power supply. The limits are about 25 V / rail, so I ended up building two rail version with 15 V each rail.

And here's the result with some pictures. First the inner side from two different angles:

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And the front side:

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And the back side:

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So there it is. The positive rail is 15.2 V and the negative rail 15.3 V. Combined they can be used as a 30.5 V one rail solution. And when I connect that is series with one of the old ones, I'll get the desired 36 V rail voltage. ]]> tuo http://www.41hz.com/forums/entry.php?215-Build-Blog-Power-Supply The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?211-The-Truepath-System-thirteen-documents Thu, 19 Jan 2012 14:26:32 GMT . (13) Building a linear power supply. THIS IS THE LINK (https://docs.google.com/document/pub?id=1nJyiaQNtJ0x_3h9VpcS3QbKwRMDz20t3YN_Vp9WqQRc) ... .
(13) Building a linear power supply. THIS IS THE LINK

Links to previous documents-
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.
(8) Chassis layout for best sound.
(9) Cable type, shielding and routing for best sound.
(10) Speaker protection and removal of start-up and switch-off pops.
(11) Calculating feedback resistor values.
(12) Building a stepped attenuator.

This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I have published my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?211-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?192-The-Truepath-System-thirteen-documents Thu, 12 Jan 2012 17:23:33 GMT .
(12) Building a stepped attenuator.[/SIZE] THIS IS THE LINK

Links to previous documents-
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.
(8) Chassis layout for best sound.
(9) Cable type, shielding and routing for best sound.
(10) Speaker protection and removal of start-up and switch-off pops.
(11) Calculating feedback resistor values.

This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I will publish my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?192-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?183-The-Truepath-System-thirteen-documents Thu, 05 Jan 2012 11:26:23 GMT . *(11) Calculating feedback resistor values.* THIS IS THE LINK... .
(11) Calculating feedback resistor values. THIS IS THE LINK

Links to previous documents-
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.
(8) Chassis layout for best sound.
(9) Cable type, shielding and routing for best sound.
(10) Speaker protection and removal of start-up and switch-off pops.

This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I will publish my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?183-The-Truepath-System-thirteen-documents The Tuepath System, thirteen documents http://www.41hz.com/forums/entry.php?176-The-Tuepath-System-thirteen-documents Thu, 29 Dec 2011 16:00:21 GMT . *(10) Speaker protection and removal of start-up and switch-off pops. *THIS IS THE LINK... .
(10) Speaker protection and removal of start-up and switch-off pops. THIS IS THE LINK

Links to previous documents:
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.
(8) Chassis layout for best sound
(9) Cable type, shielding and routing for best sound

This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I will publish my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?176-The-Tuepath-System-thirteen-documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?172-The-Truepath-System-thirteen-documents Thu, 22 Dec 2011 12:57:09 GMT * (9) Cable type, shielding and routing for best sound… THIS IS THE LINK... (9) Cable type, shielding and routing for best sound… THIS IS THE LINK
This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I will publish my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Links to previous documents:
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.
(8) Chassis layout for best sound

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?172-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?155-The-Truepath-System-thirteen-documents Thu, 15 Dec 2011 16:21:59 GMT (8) Chassis layout for best sound. THIS IS THE LINK. (https://docs.google.com/document/pub?id=11H7kBXTzpvagmXstKnGmYuWEVnHTlh46GlbRWx5B0Lk) ... (8) Chassis layout for best sound. THIS IS THE LINK.

Links to previous documents:
(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig
(7) Internal case fixings, fuses and suppliers.

This is a series of thirteen documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. I will publish my documents at weekly intervals, by giving the links on the blog facility of the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?155-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?139-The-Truepath-System-thirteen-documents Thu, 08 Dec 2011 18:00:46 GMT . *(7) Internal case fixings-fuses-suppliers. * Choose these little guys carefully! THIS IS THE LINK ... .
(7) Internal case fixings-fuses-suppliers.

Choose these little guys carefully! THIS IS THE LINK

Links to previous documents:

(1) Introduction.
(2) The sounds from the Truepath Amplifier.
(3) Truepath on a budget.
(4) Truepath Documentation.
(5) Soft start protection and main power supply.
(6) Truepath Test Rig.

This is a series of thirteen documents (mounted on Google docs) which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. It is OK folks, this is not another set of TP assembly instructions; thank goodness! Better still, I am a relative beginner, on a steep learning curve.

I intend to publish my documents at roughly weekly intervals, by giving the links using the blog facility on the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?139-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents. http://www.41hz.com/forums/entry.php?134-The-Truepath-System-thirteen-documents Thu, 01 Dec 2011 11:24:38 GMT . *(6) Truepath test rig.* An easy way to test 41Hz’s Flagship Kit! THIS IS THE LINK. ... .
(6) Truepath test rig.

An easy way to test 41Hz’s Flagship Kit! THIS IS THE LINK.

Links to previous documents:

(1) Introduction
(2) The sounds from the Truepath Amplifier
(3) Truepath on a budget
(4) Truepath Documentation.
(5) Soft start protection and main power supply.

This is a series of thirteen documents (mounted on Google docs) which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. It is OK folks, this is not another set of TP assembly instructions; thank goodness! Better still, I am a relative beginner, on a steep learning curve.

I intend to publish my documents at roughly weekly intervals, by giving the links using the blog facility on the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?134-The-Truepath-System-thirteen-documents The Truepath System, thirteen Documents http://www.41hz.com/forums/entry.php?131-The-Truepath-System-thirteen-Documents Thu, 24 Nov 2011 10:39:43 GMT . (5) Soft start protection and main power supply. How to choose them, and much more! THIS IS THE LINK.... .

(5) Soft start protection and main power supply.

How to choose them, and much more! THIS IS THE LINK.

Links to previous documents:

(1) Introduction
(2) The sounds from the Truepath Amplifier
(3) Truepath on a budget
(4) Truepath Documentation.

This is a series of thirteen documents (mounted on Google docs) which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. Its OK folks, this is not another set of TP assembly instructions; thank goodness! Better still, I am a relative beginner, on a steep learning curve.

I intend to publish my documents at roughly weekly intervals, by giving the links using the blog facility on the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?131-The-Truepath-System-thirteen-Documents The Truepath System, thirteen Documents. http://www.41hz.com/forums/entry.php?129-The-Truepath-System-thirteen-Documents Thu, 17 Nov 2011 10:46:13 GMT . (4) Truepath documentation. Get the best info for your project! THIS IS THE LINK... .
(4) Truepath documentation.

Get the best info for your project! THIS IS THE LINK

Links to previous documents:

(1) Introduction

(2) The sounds from the Truepath Amplifier

(3) Truepath on a budget

This is a series of thirteen documents (mounted on Google docs) which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. Its OK folks, this is not another set of TP assembly instructions; thank goodness! Better still, I am a relative beginner, on a steep learning curve.

I intend to publish my documents at roughly weekly intervals, by giving the links using the blog facility on the 41Hz website.

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?129-The-Truepath-System-thirteen-Documents The Truepath System, thirteen documents http://www.41hz.com/forums/entry.php?125-The-Truepath-System-thirteen-documents Thu, 10 Nov 2011 15:07:21 GMT *The Truepath System* *(3) Truepath on a Budget* *How much will it cost overall?* This is document (3) of (13), and THIS IS THE LINK... The Truepath System

(3) Truepath on a Budget

How much will it cost overall?

This is document (3) of (13), and THIS IS THE LINK.

Links to previous documents:

(1) Introduction

(2) The sounds from the Truepath Amplifier

Haggis Basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?125-The-Truepath-System-thirteen-documents The Truepath System, thirteen documents. http://www.41hz.com/forums/entry.php?124-The-Truepath-System-thirteen-documents Thu, 03 Nov 2011 19:23:08 GMT *The Truepath System. (1) and (2)* This is a series of documents which are aimed at the complete beginner, but written in an entertaining manner... The Truepath System. (1) and (2)

This is a series of documents which are aimed at the complete beginner, but written in an entertaining manner to keep the attention of experienced builders. Its OK folks, this is not going to become another set of TP assembly instructions; thank goodness! Better still, I am a relative beginner, on a steep learning curve.

There are thirteen documents mounted on Google docs. I have published the first two today, and they are:

(1) Introduction to my documents about the Truepath System, and the link is:

https://docs.google.com/document/pub...pP_Rl6ZPq63DaM

(2) The sounds from the Truepath Amplifier.
I am convinced that the TP is the best domestic amplifier I have ever heard; by quite a long way!

And the link is:

https://docs.google.com/document/pub...VN8iG2zI1aLCV8

I intend to publish the rest of my documents at roughly weekly intervals, by giving the links using this blog facility, keeping the titles as above (The Truepath System, followed by the document number).

Haggis basher. ]]> Haggis Basher http://www.41hz.com/forums/entry.php?124-The-Truepath-System-thirteen-documents Truepath! http://www.41hz.com/forums/entry.php?122-Truepath! Mon, 31 Oct 2011 18:58:40 GMT Truepath and usb monica DAC from diyparadise.com Truepath and usb monica DAC from diyparadise.com
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]]> 86Ivar http://www.41hz.com/forums/entry.php?122-Truepath!