I have never considered biamping
However if I feel like experimenting I do have 2 other spare amps ( not First Watt )
FR
pretty much always DF will not give all information needed to know how amp is behaving in bass realm , in actual setup
often - in home - amp with slightly greater output impedance will give "better" bass , call it more , fatter , deeper - that all depends of many circumstances
so , only way is to try , having actual comparison info from someone else as just a nod
from my experience - F6 is having slightly "better" bass than F5 , but my setup is everything but representative (informative or applicable) for anyone else (16R in TL etc.)
wait for F7
often - in home - amp with slightly greater output impedance will give "better" bass , call it more , fatter , deeper - that all depends of many circumstances
so , only way is to try , having actual comparison info from someone else as just a nod
from my experience - F6 is having slightly "better" bass than F5 , but my setup is everything but representative (informative or applicable) for anyone else (16R in TL etc.)
wait for F7
My impression is the bass is definitely better than the other 2 amps. Maybe because the LaScala woofers are 4 ohm and the F6 puts out 50 watts at 4 ohms. It is a subtle difference though but noticeable.
Yes I agree. The other amps you had were basically single ended amps.
F5 will also put out 50 Watts into 4 Ohms
pretty much always DF will not give all information needed to know how amp is behaving in bass realm , in actual setup
often - in home - amp with slightly greater output impedance will give "better" bass , call it more , fatter , deeper - that all depends of many circumstances
so , only way is to try , having actual comparison info from someone else as just a nod
from my experience - F6 is having slightly "better" bass than F5 , but my setup is everything but representative (informative or applicable) for anyone else (16R in TL etc.)
wait for F7
Yes but remember he said he preferred the sound of Pass Labs amp not Firstwatt.
This tells me he is probably going to like a high biased output stage with a decent amount of damping factor not less.
I agree he should perform your experiment first though.
Thanks Zen Mod
I have a few resistors of different values on hand from the crossover build
So lets give this suggestion & easy test a go if time permits tomorrow and see what transpires
FR
Attachments
As for putting in more transistors and upping the bias.
sorry, no way in hell would the transformer and heatsink survive.
So that won't be happening any time soon
Resistor experiment conducted
First connection impressions of 10W resistor connected to positive terminal of amp to speaker
It's the only value resistor pair I have in the spares basket
Result of experiment
Volume is lower by approx 10 / 15%
On turning the volume up to match previous level for comparison
All speakers seem flat by a small percentile ( read that as a little lifeless ) as previously they are engaging to the point of reeling the listener in on a fishing line
An example to explain - Listening to string instruments like the violin And the deeper chelo - - normally the bow can be felt as it passes over the stings
Triangles just ting where before the whole note was held from start until it was exhausted
Also the multi layer nuances have gone the same way
Result not as nice as without the resistor
Cheers
FR
First connection impressions of 10W resistor connected to positive terminal of amp to speaker
It's the only value resistor pair I have in the spares basket
Result of experiment
Volume is lower by approx 10 / 15%
On turning the volume up to match previous level for comparison
All speakers seem flat by a small percentile ( read that as a little lifeless ) as previously they are engaging to the point of reeling the listener in on a fishing line
An example to explain - Listening to string instruments like the violin And the deeper chelo - - normally the bow can be felt as it passes over the stings
Triangles just ting where before the whole note was held from start until it was exhausted
Also the multi layer nuances have gone the same way
Result not as nice as without the resistor
Cheers
FR
I like both Pass Labs and First Watt
They are just different in small ways
If I had the money I would get an INT-30a
but would welcome a Brisbane local with one to test it on my system That gives me an idea to ask the QLD audio club members if anyone has an F6 or an INT-30a
I haven't personally heard the F6 but what appeals to me is the lack of current limiting circuitry on the output and the lack of tight bias control I suspect this has a lot to do with the high quality bass that has been reported
And finally I've always been a fan of quasi complementary output stages and have nagged Nelson a bunch of times to do one.
I just talked myself into it, I'll build one too.
And finally I've always been a fan of quasi complementary output stages and have nagged Nelson a bunch of times to do one.
I just talked myself into it, I'll build one too.
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I haven't personally heard the F6 but what appeals to me is the lack of current limiting circuitry on the output and the lack of tight bias control I suspect this has a lot to do with the high quality bass that has been reported
And finally I've always been a fan of quasi complementary output stages and have nagged Nelson a bunch of times to do one.
I just talked myself into it, I'll build one too.
I have also made the decision to upgrade my F5 to the F6
Probably need to also upgrade the transformer as well while it's on the bench
What do you think of Zen Mod's mention of waiting for an F7. ??
Is this a cat out of the bag comment ? Or just teasing us ?
FR
I have just placed an order for the F6, PCB boards with Jensen transformers and the matched JFets
Also thanks to @Wdecho for his comments as he has almost the same speaker set up as mine
Man the exchange rate is a killer at present $1 AU is 69c US - but hey if one wants to upgrade then one has to follow ones heart
FR
Also thanks to @Wdecho for his comments as he has almost the same speaker set up as mine
Man the exchange rate is a killer at present $1 AU is 69c US - but hey if one wants to upgrade then one has to follow ones heart
FR
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I am loving my F6 more and more everyday. I had to change and adjust the crossover a few times because the F6 showed more detail but now I have it dialed in. It was more me being very picky and wanting the sound just right. Mr Pass was gracious on putting me on the right path once. It is kinda spooky how a single instrument or vocal singer just appears in a completely quite background in the room. The speakers just disappear. I have become a believer in simple circuits and one stage of amplification from an amplifier. This is my first one stage amplifier.
Excellent - I read your review from the main F6 thread and it's good to see that it only gets better
Like you I have adjustable tweeter and mid range via onboard attenuators on the crossovers
I will probably be posting a step by step procedure of the transformation from the F5 to the F6
But first I need some sage advice on the best brands / types or most musical components to populate the PCBs
FR
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