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Old 3rd November 2008, 03:44 PM   #1
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Default Bryston 3bsst or Chipamp?

I want to buy a amp but I want to build one with chipamps in parallel But I have big 10 inch vifa woofers in my system... I listen in moderate levels which doesnt disturb neighbors. Is there anybody who have used Bryston and Chipamps and tell which is better in what perspective...

please help me in making the decision....
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Old 4th November 2008, 01:50 PM   #2
SRMcGee is offline SRMcGee  United States
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rhythmdiy:

I've built LM3875-based projects and listened to Bryston power amps. As happy as I am with the chipamps, the Bryston amps were better. My experiences (which others may not share) have been that the Bryston amps (primarily the 4B and 4B SST) offer greater detail, nuance, energy and resolution. Additionally, the Bryston's soundstage was more three-dimensional.

Presumably, you are faced with the option to either build a chipamp or purchase a particular Bryston. But given what I imagine is a significant disparity in the price of your two choices, it seems like an odd question -- if you have the funds to buy a Bryston 3B SST, there are undoubtedly many other options available to you (including a radically souped-up chipamp). You could be very happy with either, but what is your goal?

Regards,
Scott
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Old 4th November 2008, 03:50 PM   #3
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I have auditioned Lm3886 based single chip amp and the mids and highs are incredible but Bass is something I am worried off.. I am a sucker for bass and btw I am connecting these to the PC with a highend professional sound card..

But now the prob is that I watch movies as well when I feel I have to get pretty good bass... so my thought is going towards Bryston since they are masters in lowend tight bass...

but I thought of using a BPA 300 to solve this issue.. even thought my speakers are capable of taking only 160watts of inputs but since I want that tight and very controlled sound... I was interested to move to the Brystons... what do you say... since I have a vifa pl26w 10 inch woofer I am showing interest in Bryston just because of Bass...

I cant leave mids and highs of chipamps and Bass of Brystons...

How do i fill this gap...?


whats ur opinion...
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Old 4th November 2008, 04:04 PM   #4
AndrewT is offline AndrewT  Scotland
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a chipamp is just an amp with gain much like any other.
Give it a good PSU and you won't criticise it for lack of bass.
Give it a difficult load and you will never hear it playing well.

Going to parallel or bridged or both will just complicate the issue.
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Old 4th November 2008, 04:11 PM   #5
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Hi Andrew thanks for the reply.. can you please give me a practical example with chip/ PSU ratings like

I thought of using 10,000uf per chip and 100VA/ chip of supply and to have 600VA for BPA 300

but I want this amp to bias into class A ... can anybody tell me how to do this as well?
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Old 4th November 2008, 04:23 PM   #6
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Default Possible tweaks on the PSU?

Hi All,

I've built the LM3886 based gainclone but using the standard circuit as per the National's schematic on its datasheet , not the BPA 300. And honestly, I haven't heard the performance of Bryston Limited 3B SST in my town, Jakarta - Indonesia, so I could not comments for its performance.

I recalled that when first time my chipamp running, I noticed that the bass was a bit 'loose' and to my liking was not punchier... then I decided to implement additional filtering caps at the unregulated PSU circuit , from previously only 2 x 4700uF/50VDC per channel increased to 6 x 4700uF/50VDC. I also then install additional filter cap at the LM3886 chip supply line, with additional 1000uF/50VDC per rail, making it became 2 x 1000uF/50VDC per rail. Somehow then, dunno why technically, the bass of my chipamp became 'tighter' and 'punchier'.

Just for your reference :
http://www.diyaudio.com/forums/showt...31#post1528031
and
http://www.diyaudio.com/forums/showt...17#post1528317

FYI , I'm still newbie in DIY Electronic (although already 39 years old), so apologies if my sharing here might not have strong technical background,

Regards,
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Old 4th November 2008, 04:37 PM   #7
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Is this overkill or this is how things can be improved?

http://www.norh.com/products/sub/inside.html

its about Norh sub but with higher power supply

I am using the similar woofer just 2 inches bigger the same series of woofer Vifa PL22W is used in Norh sub and Im using PL26W

so I think I have to use massive caps for tighter bass..
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Old 4th November 2008, 04:39 PM   #8
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this is the review for the above sub...

Strengths:
Tight bass, Musicality, No box coloration, no overhang, sold as a pair, georgous finish, price, manufacturer dialogue and support.

http://www.audioreview.com/mfr/norh/...2_2741crx.aspx
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Old 4th November 2008, 04:44 PM   #9
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I am thinking of another option thats...

using 330uf supply caps 200 numbers so that i will get superquick charge after discharge... and extreme low ESR ( I will create a new box for the power supply... ) whats your opinion...
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Old 4th November 2008, 05:16 PM   #10
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Quote:
Originally posted by rhythmdiy
.. and extreme low ESR ( I will create a new box for the power supply... ) whats your opinion...

That the connecting wires will negate all improvement.
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