View Profile: FFF - 41hz Forum

14-May-13, 09:47

V-bro replied to a thread connecting active woofer to amp4 in AMP4

It is nice to have adjustable high and lowpass, cutting lows will clean up the 'satellite' speakers. The point of the filter I proposed is that it...

14 replies | 594 view(s)

12-May-13, 10:20

V-bro replied to a thread connecting active woofer to amp4 in AMP4

Maybe this is simpler for you:...

14 replies | 594 view(s)

12-May-13, 10:12

V-bro replied to a thread connecting active woofer to amp4 in AMP4

You need a power supply with it and then it is simple, apply stereo line signal audio and then there is a mono output. I don't have a picture, maybe...

14 replies | 594 view(s)

10-May-13, 20:24

V-bro replied to a thread connecting active woofer to amp4 in AMP4

This would work:...

14 replies | 594 view(s)

06-May-13, 20:45

V-bro replied to a thread 24V connected to AMP9-B (accidentally in AM-mode) in AMP9

Did you also use mica or any other form of insulation? The chip MUST NOT make electric contact to the case... And yes you can measure whether...

14 replies | 800 view(s)

04-May-13, 20:09

V-bro replied to a thread 24V connected to AMP9-B (accidentally in AM-mode) in AMP9

Beep tones come from the modulator, for instance when there is lack of current. In an extreme case it could be due to poor heatsinking. If that is...

14 replies | 800 view(s)

03-May-13, 20:18

V-bro replied to a thread 24V connected to AMP9-B (accidentally in AM-mode) in AMP9

With input cabling attached and without as well?

14 replies | 800 view(s)

22-Apr-13, 19:13

V-bro replied to a thread 24V connected to AMP9-B (accidentally in AM-mode) in AMP9

Only the Tripath chip would be damaged. The later rev. has a jumper next to the socketed 74HC chip, this must also be closed. When unsure just...

14 replies | 800 view(s)

21-Apr-13, 22:49

V-bro replied to a thread 24V connected to AMP9-B (accidentally in AM-mode) in AMP9

Next time place a 24V truck interior lighting bulb (soffitten) in series dude!! That's not holy, but will be miuch safer than have unlimited current...

14 replies | 800 view(s)

21-Apr-13, 22:31

V-bro commented on article AMP-32: Bicycle Pipe + SPH-30X-4 in Customer projects

Definitely! These little ones don't like a hard pounding! ;) And then what drivers will you use? THe SPH-30X is rather perfect for the job as it...

4 replies | 3287 view(s)

17-Apr-13, 17:15

V-bro commented on article AMP-32: Bicycle Pipe + SPH-30X-4 in Customer projects

Cheers, it is sealed. Still features amazing low frequency response. It also performs very well as mini boombox when placed on the floor, the output...

4 replies | 3287 view(s)

06-Apr-13, 11:12

V-bro replied to a thread Help: No sound, no LEDs on AMP 9 PS in AMP9

okiedokie, solved, didn't know I could have 1000 messages!!

8 replies | 766 view(s)

05-Apr-13, 22:51

V-bro replied to a thread Help: No sound, no LEDs on AMP 9 PS in AMP9

Wouldn't pry around in this corpse any further and build the others first. Will be a breeze to repair this one after the smell of success... Trust...

8 replies | 766 view(s)

05-Apr-13, 16:12

V-bro replied to a thread DSP Xover: Najda in Misc audio related

That's lovely, I want one!

10 replies | 1063 view(s)

04-Apr-13, 19:33

V-bro replied to a thread Help: No sound, no LEDs on AMP 9 PS in AMP9

You dont need the leds and the 5V must indeed be connected straight to the sleep pin... iirc you need to connect 5v to two other pins... I cant...

8 replies | 766 view(s)

26-Mar-13, 15:41

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

No, if it works the amp kit is fine, all you need is get the same diodes...

27 replies | 2791 view(s)

26-Mar-13, 00:06

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

That's 60K and 59.9K then.... that's good... The offset voltage could be due to a tolerance in the output clamping diodes (SMD diodes), but I...

27 replies | 2791 view(s)

25-Mar-13, 21:52

V-bro replied to a thread Help understanding CLC-filter on VCC ( AN 11 ) in Power Supply Kits

Ah well, in series is like train carriages are connected and parallel is like a car crossing the track. The filter is simply a common mode inductor...

3 replies | 439 view(s)

25-Mar-13, 17:41

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

Simple, speake outputs on the amplifier, the large screw terminals, four contacts in a row. Measure the resistance over these with no speakers...

27 replies | 2791 view(s)

25-Mar-13, 17:39

V-bro replied to a thread Help understanding CLC-filter on VCC ( AN 11 ) in Power Supply Kits

On an asymmetric power supply amplifier VCC is the supply voltage of the whole amplifier, which indeed is VNN and VPP on a symmetric powered...

3 replies | 439 view(s)

25-Mar-13, 11:53

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

No, I mean the resistance over the speaker outputs. Then best set the meter to a range of 50K or 100K....

27 replies | 2791 view(s)

24-Mar-13, 22:24

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

It is not completely dramatic, but certainly on the edge... It could point to some kind of problem or potential problem. How do your output...

27 replies | 2791 view(s)

23-Mar-13, 16:11

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

You only need to disconnect two of the four wires. If you pull just one plug on a loudspeaker it cuts out right? That's all there is needed... I...

27 replies | 2791 view(s)

22-Mar-13, 17:45

V-bro replied to a thread My boombox with Amp6 and Bandor Fullranges in AMP6 and AMP6-BASIC

It is sometimes case dependent and it is always more complicated to do it exactly right so that it works in every situation. Shielding is...

27 replies | 2791 view(s)

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