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Old 4th June 2009, 11:47 AM   #111
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Im planning on getting this amp for my portable ghettoblaster. Im going to use 12V lead acidbatteries paralled. the signal to noise ratio(80dBA) seems to be quite low compared to lepai which im replacing. im going to use speakers with 96 SPL sensitivity and 8ohm impedance and soundsource will be a mp3player so the output of it isnt very big. Do you think this will play enough loud? or should i go for 41hz.com:s AMP9?
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Old 4th June 2009, 12:19 PM   #112
konman is offline konman  Australia
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I couldnt resist so i took the plunge also and bought one of these relatively blindly.

Unfortunately I do not have a decent amplifier to compare this to so I probably wouldn't know really how good this is.

So for a newbie such as myself, what would be the best mods to do to this amp board?

remove resistors as in previous posts?
add better quality audio grade input caps?

I have 3 power supplies that came from halogen lamps, they are rated to 11.4 volts ~ eff. 5amps. Can I run these things in series and power the board with a theoretical voltage of 34.3 volts? Or will I burn the house down and force my wife to divorce me?

these are thetransformers

thanks
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Old 4th June 2009, 01:26 PM   #113
ttan98 is offline ttan98  Australia
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Quote:
Originally posted by konman
I couldnt resist so i took the plunge also and bought one of these relatively blindly.

Unfortunately I do not have a decent amplifier to compare this to so I probably wouldn't know really how good this is.

So for a newbie such as myself, what would be the best mods to do to this amp board?

remove resistors as in previous posts?
add better quality audio grade input caps?

I have 3 power supplies that came from halogen lamps, they are rated to 11.4 volts ~ eff. 5amps. Can I run these things in series and power the board with a theoretical voltage of 34.3 volts? Or will I burn the house down and force my wife to divorce me?



these are thetransformers

thanks
If you care to wait panomaniac is current looking this and will come up with a series of mods.
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Old 4th June 2009, 01:45 PM   #114
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Quote:
Originally posted by konman
I have 3 power supplies that came from halogen lamps, they are rated to 11.4 volts ~ eff. 5amps. Can I run these things in series and power the board with a theoretical voltage of 34.3 volts? Or will I burn the house down and force my wife to divorce me?

these are thetransformers

thanks
I don't think those will work. That type of switching supply outputs AC voltage and switches at a relatively low frequency unsuitable for an audio amplifier.
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Old 5th June 2009, 12:45 PM   #115
kankara is offline kankara  Hungary
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hi.
sorry for my bad, very bad english.
i have brought the change for this sure electronic like the "little sister" 2*15W.

the last thing i must to do will be take out the DC protection diode.

this sure based on the TK2050 don't convince me.
there is not the "magic" as the little.
no bass frequences, too much high frequences.
almost with my speakers OB based on the philips 9710M full range speakers + woofer grundig vintage(from the seventy).

i will prove the power stabilized supply 24v.

i wish a nice day everybody.
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Old 6th June 2009, 12:03 AM   #116
cheric is offline cheric  United States
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Just a personal thought…
I have a collection of t-amp’s that includes Trends 10.1, Sure T2024 boards, Topping TP-10/Mark II, HLLY T-amp20 and the Lepai.
All of them have been modified EXCEPT the Trends 10.1. And, to my ears, the Trends still sounds the best of all. The HLLY board has the least impressive performance.
To my un-trained ears, I would rank them…
1- Trends 10.1 (un-modified)
2- Sure T2024
3- Lepai
4- Topping T10/Mark II
5- HLLY T-amp 20
The amps that have been modified using the same parts (input caps, p/s buffer…)
I am wondering if the Sure 2*100w will sound any better, not taking different wattage in consideration –just sound.
Any thoughts?
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Old 6th June 2009, 02:41 AM   #117
col is offline col  Australia
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Kankara, that looks like an impressive range of mods you have done there. What about the output inductors though? Maybe thats why you have no bass?

col.
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Old 6th June 2009, 06:35 AM   #118
ttan98 is offline ttan98  Australia
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Quote:
Originally posted by cheric
Just a personal thought…
I have a collection of t-amp’s that includes Trends 10.1, Sure T2024 boards, Topping TP-10/Mark II, HLLY T-amp20 and the Lepai.
All of them have been modified EXCEPT the Trends 10.1. And, to my ears, the Trends still sounds the best of all. The HLLY board has the least impressive performance.
To my un-trained ears, I would rank them…
1- Trends 10.1 (un-modified)
2- Sure T2024
3- Lepai
4- Topping T10/Mark II
5- HLLY T-amp 20
The amps that have been modified using the same parts (input caps, p/s buffer…)
I am wondering if the Sure 2*100w will sound any better, not taking different wattage in consideration –just sound.
Any thoughts?
It is most welcomed that you gave your impressions on all these digital amps, unfortunately I bought a HILLY T-amp 20 recently if it worst amp of the lot then I don't much hope of improving it.

A suggestion, if you get a Sure Elec., 2*50W or a 2*100W and add to your on going assessment, most people here would welcome that as well. Unfortunately I have placed an order for a 2*50W and a 2*100W version already for an experimental amp.

One of the determining factors that all these amps sound different is the layout, since we have "almost" eliminate the component factor because you have replaced them with similar components.

Cheers.
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Old 6th June 2009, 10:09 AM   #119
cheric is offline cheric  United States
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Quote:
Originally posted by cheric
Just a personal thought…
I have a collection of t-amp’s that includes Trends 10.1, Sure T2024 boards, Topping TP-10/Mark II, HLLY T-amp20 and the Lepai.
All of them have been modified EXCEPT the Trends 10.1. And, to my ears, the Trends still sounds the best of all. The HLLY board has the least impressive performance.
To my un-trained ears, I would rank them…
1- Trends 10.1 (un-modified)
2- Sure T2024
3- Lepai
4- Topping T10/Mark II
5- HLLY T-amp 20
The amps that have been modified using the same parts (input caps, p/s buffer…)
I am wondering if the Sure 2*100w will sound any better, not taking different wattage in consideration –just sound.
Any thoughts?

Quote:
Originally posted by ttan98


It is most welcomed that you gave your impressions on all these digital amps, unfortunately I bought a HILLY T-amp 20 recently if it worst amp of the lot then I don't much hope of improving it.

A suggestion, if you get a Sure Elec., 2*50W or a 2*100W and add to your on going assessment, most people here would welcome that as well. Unfortunately I have placed an order for a 2*50W and a 2*100W version already for an experimental amp.

One of the determining factors that all these amps sound different is the layout, since we have "almost" eliminate the component factor because you have replaced them with similar components.

Cheers.
I almost forgot...I also have the SI Gen2 that I would rank ...

6- SI Gen2 (modded)

ttan98, please don't misunderstand my "ratings"; all these amps sound VERY GOOD on their own. They all have their good points. This is just my preferred list - a personal preference, if I may.
You may like the HLLY best. With your personal modification, you may think differently.
BTW, I just ordered the 2*100 watts. ... and the quest goes on.
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Old 6th June 2009, 11:18 AM   #120
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all of you guys who replaced the input inductors, seemed to take away the original RCA inputs. im planning on keeping those rca inputs, so is it possible to change them? i just replace the original blue ones with 2.2uF ones? does it increase bass significantly? im a total newbie, sorry for stupid questions
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