collapse

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - flester

Pages: [1] 2 3 ... 8
1
Preamps and Effects / Re: So you need a preamp - here are your options
« on: November 29, 2019, 05:44:46 AM »
OK I built up a buffer with MPF102. Definitely brightens the sound compared to going directly into my Kemo 40w power amp but less so in front of the TDA2003 or the LM386. This is using a 6" speaker, and fairly short guitar cables. Now to try it via my 1x12 and longer cables.

Sent from my SM-A505FN using Tapatalk


2
Preamps and Effects / Re: So you need a preamp - here are your options
« on: November 07, 2019, 05:03:55 PM »
Thanks for that. Think I'll just get some MPF102 and J201's as recommended.

Sent from my SM-A505FN using Tapatalk


3
Preamps and Effects / Re: So you need a preamp - here are your options
« on: November 06, 2019, 06:44:31 PM »
these are the ones I've tried without success but maybe I need to mess around a bit more

http://www.farnell.com/datasheets/2304095.pdf?_ga=2.184256102.1389724509.1573081103-1254332340.1566743493

Sent from my Acer Chromebook R13 (CB5-312T) using Tapatalk


4
Preamps and Effects / Re: So you need a preamp - here are your options
« on: November 06, 2019, 06:25:32 PM »
Thanks for that. I think this one may fall into the correct range.
http://www.farnell.com/datasheets/1796807.pdf?_ga=2.8128754.1389724509.1573081103-1254332340.1566743493

I note that the datasheet says , it used for '... low level switching...chopper-stablilised amplifiers...' etc. DOes that have a bearing on my intended use?

Sent from my Acer Chromebook R13 (CB5-312T) using Tapatalk


5
Preamps and Effects / Re: So you need a preamp - here are your options
« on: November 04, 2019, 05:36:00 AM »
Could I get some guidance on how to select 'equivalent' transistors, for example where a J201 or MPF102 is specified but not available. Apart from just googling 'J201 equivalent', is there way to select based on specs in the data sheet? At present I am planning a preamp to go in front of my TDA2003 amp.

Sent from my SM-A505FN using Tapatalk


6
Small bass amps are sometimes recommended for cleans. Also check out some Steel Guitar forums.
They often favour clean SS tones with Peavey and the Roland Cube range often coming up (though the latter use modelling a lot).

7
Preamps and Effects / Re: Rechargeable 9v batteries for fx pedals
« on: July 07, 2019, 04:11:22 AM »
The ones I have are a few years old and Ni-Cad. I was using them to power a TDA2003 amp drawing up to 500mA. My hungriest battery driven pedal draws 30mA and the rest are single figures.

Maybe I just need a newer set of batteries. Worst case I leave a pedal powered on overnight and need a new battery.

8
Preamps and Effects / Rechargeable 9v batteries for fx pedals
« on: July 06, 2019, 02:35:32 PM »
Are Rechargeable 9v batteries a viable option for pedals?

Just asking cos I have some, and I broke my fx power supply. The ones I have claim 350 mAh capacity but interestingly the only major brand ones I can find are Duracell with 170 mAh. Are the claimed mAh values reliable in your experience?

9
Amplifier Discussion / Reverse polarity protection
« on: February 07, 2019, 05:08:25 AM »
I neglected to add reverse protection to my LM386 amp and broke. It is basically the Little Gem/Smokey amp.
https://goo.gl/images/3dqb9b
 It powers on but no output. I am checking all the caps and the IC.
Anything else I should check?
What type of diode should I (have) use(ed) for reverse polarity?

Sent from my SM-G930F using Tapatalk


10
Surely the Tube Sound happened by accident. Tube amplifiers were used to make guitars louder and they did. Then SS amplifiers were used and they also made guitars louder using smaller components and less energy. But they sounded different. Why should we strive to make them sound tubey?

Sent from my SM-G930F using Tapatalk


11
Amplifier Discussion / Re: Grounding techniques
« on: February 05, 2019, 12:05:18 PM »
The mains adapter that worked has now died. Any tips on how to buy a new one that is not noisy?

Sent from my SM-G930F using Tapatalk


12
I would. I don't know the actual product but I've often bought stuff that 'sounds terrible' and been delighted with it. Even as a cab it would be cool. Stuff like sealant/glue around speakers should be easy to fix. Maybe some say  'sounds terrible' because its solid state.

Sent from my Acer Chromebook R13 (CB5-312T) using Tapatalk


13
Amplifier Discussion / Re: Hotone Nano Amp Heads
« on: January 09, 2019, 11:14:34 AM »
In which case they may sound a bit like my diy tda2003 amp so probably not worth my buying one. Looking for something to feed my diy 1x12 cab. At rhe moment I'm using various pedals with my diy amps and happy with that for now. I also play a lapsteel BTW.

Sent from my SM-G935F using Tapatalk

Just because they use a TDA2003 does not mean it will sound anything like your amp at all.  By definition, chip amps do not color the sound.  The "sound" of the amp is defined by the preamp.
OK fair enough. Havent seen them in shops to try out but planning to buy or build something for my 1x12 cab


Sent from my SM-G935F using Tapatalk


14
Amplifier Discussion / Re: Hotone Nano Amp Heads
« on: January 08, 2019, 07:46:38 AM »
In which case they may sound a bit like my diy tda2003 amp so probably not worth my buying one. Looking for something to feed my diy 1x12 cab. At rhe moment I'm using various pedals with my diy amps and happy with that for now. I also play a lapsteel BTW.

Sent from my SM-G935F using Tapatalk


15
The Newcomer's Forum / Re: First real build. LM386.
« on: January 05, 2019, 05:26:04 PM »
Hey some nice blues riff there :tu:
BTW, looks like you are driving a hifi type speaker box,, if so then be aware they are woofers and generally have a low SPL,, a real guitar speaker will give a much bigger sound,, louder per watt of input.
Phil.
A friend has a 12" guitar speaker I can use. Time for a bit of joinery I think


Sent from my SM-G935F using Tapatalk
Finally did the joinery ( takes me a while to do stuff!) I now have the amp and some pedals powered by a single PS in a case and going in to the 1x12. Plenty loud for home use and a great platform for bigger amp builds.
Speaker good for up tp 80w.
1w amp and pedals into 1x12 cab
 https://imgur.com/gallery/lKMg7CR

Sent from my SM-G935F using Tapatalk


Pages: [1] 2 3 ... 8

* User Controls

 
 
Welcome, Guest. Please login or register.
Did you miss your activation email?

* Recent Posts

signal tracing by Crich
[December 06, 2019, 10:34:07 PM]


Eight Audio Kit TDA7294 and TDA2050 from India by Enzo
[December 05, 2019, 08:10:57 PM]


The Dangers of Speaker Impedance Mismatching by Enzo
[December 05, 2019, 11:44:14 AM]


Gallien Kruger GT200 by gbono
[December 04, 2019, 02:54:12 PM]


Peavey Classic VT by Enzo
[December 02, 2019, 09:16:10 PM]

* Sponsors