Bryston 7b3 upgrade to 28b3

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sep297

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Re: Bryston 7b3 upgrade to 28b3
« Reply #80 on: 7 Jan 2022, 04:27 am »
Thanks for the advice on the 28's you see them in dealers etc and it is difficult to tell next to other big amplifiers etc, so the practical experience of living with them is very useful.

Regards


Stuart

G E

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Re: Bryston 7b3 upgrade to 28b3
« Reply #81 on: 8 Jan 2022, 12:35 am »
Thanks for the advice on the 28's you see them in dealers etc and it is difficult to tell next to other big amplifiers etc, so the practical experience of living with them is very useful.

Regards


Stuart


They are easy to live with because they pull their weight.

sep297

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Re: Bryston 7b3 upgrade to 28b3
« Reply #82 on: 27 Jan 2022, 06:09 pm »
Thanks for the advice,

I went with the 28’s and the BR20 in the end and no regrets so far.

Cheers

Stuart

viz

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Re: Bryston 7b3 upgrade to 28b3
« Reply #83 on: 13 Feb 2022, 07:15 pm »
I think it was probably a mistake to get them. Please get something even more ridiculously sublime and sell the 28s to me.

pmcd

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Re: Bryston 7b3 upgrade to 28b3
« Reply #84 on: 14 Feb 2022, 11:44 am »
Clive   I currently run 7BSST2 to power my ATC SCM50PSL Classic's that are 85dB efficient and are somewhat comparable to your PMC'c     - 5dB on my end      so I find the ATC's do not come alive until higher volume listening levels are achieved ! and low listening levels are not attainable without a huge loss in detail of the music.
Also I had my system in a quite large room where it didn't preform that well at all, moved it int a small 12x12 heavily dampened room that I built and it sounded unreal but still needed high volume but bass was improved so much.  I was also considering as you are to go the 28B route but I couldn't get an in home audition as my location to a dealer.
                                                                                     Paul

clive101

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Re: Bryston 7b3 upgrade to 28b3
« Reply #85 on: 14 Feb 2022, 08:04 pm »
Not too sure of you question.... but I found better detail at lower volumes with the 28s than the 7s.
I found the 28 amps grip the speakers... Power is king not for loudness but for gravities.
Perhaps try to get a secondhand pair you will not be disappointed.
Depends on your geographical location what options you have ?

Clive197

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Re: Bryston 7b3 upgrade to 28b3
« Reply #86 on: 15 Feb 2022, 09:46 am »
We’re you in the Cyrus line at one time.  Maybe what hi if? I recognize your user name

Hi Schmidtmike76

I think you will find that’s me. I’m Clive197, clive101 is someone else.

Sold all my Cyrus kit when moving over to Bryston and am now very proud owner of a 4B3 and BR20.
« Last Edit: 15 Feb 2022, 04:21 pm by Clive197 »

clive101

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Re: Bryston 7b3 upgrade to 28b3
« Reply #87 on: 24 Apr 2022, 04:21 pm »
Hi Everyone,

I am using a Chord Dave balanced out to balanced in on the 28 (s)....
Just wondered if anyone prefered the RCA input over Balanced with the 28 (s) who had a choice of both with the same source ?

Is there any difference inside the amp for example does it convert RCA to balanced ?

Thanks

sfraser

Re: Bryston 7b3 upgrade to 28b3
« Reply #88 on: 25 Apr 2022, 09:31 pm »
This is a very interesting thread. I can understand why a more powerful amplifier in the same series (7B cubed VS 28B cubed for example) could sound better at high SPL's , particularly with a speaker as capable as the PMC's. But I am perplexed that you would experience such a difference at low volumes while only pushing a watt or two. I would have suspected the two amps from the same series to sound very similar at low output levels ?

Cheers,

Scott

Rod_S

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Re: Bryston 7b3 upgrade to 28b3
« Reply #89 on: 26 Apr 2022, 11:03 am »
The Bryston amps I believe run in Class A mode at low wattages and as you step up the series from 3 to 4 to 7 to 28 the available power increases and so does the Class A wattage range before each amp switches to Class AB. Class A may have a different tonal characteristic vs Class AB.

So depending on how low, low level listening is and how many watts are being used where say a 7 may have moved into the AB range the 28 may still be operating within it's A range which may be contributing to the difference.