Jad Freer Sisma Mega Thread.

[DJ Bebop]

It would be awesome for you to get a Sisma and let us know how it is. We are all here because we are interested in it and I just bought an Aguilar DB 751 so it’s your turn!

 

[Jim C]

As always, you are entitled to your opinion, but why ask questions when you already know the answers and are unwilling to consider the information being provided?

Some days you just have to walk away and call it good, because no good deed goes unpunished...

 

[smeet]

Well one thing, we can't hear one, only on YouTube and sound samples because you can't import one into our country to try.

It would be awesome for you to get a Sisma and let us know how it is. We are all here because we are interested in it and I just bought an Aguilar DB 751 so it’s your turn!

For legal reasons the following may or may not refer to factual events.

I bought a Sisma a little while ago, and I played 3 sets with it a little while ago. Here’s what I said:

I played my first real gig with the Sisma last night, with a classic rock cover band, using my Audiokinesis 212 cabinet.

I have to admit, the overall sound was at first a shock to my ears, as I have always used a very focused sound. The Sisma is wide and pillowy in the lows, which I have shied away from in the past. I found it stays very articulate and has great fundamental and pitch definition. The band loved the sound as it fills lots of space in the right way. By the end of the night I was sold. It feels like a big fat amp. That’s a good thing.

My other amp is a Jule Simone preamp into an M700 power amp. That rig is set up for a modern metal sound with tight but present lows and very aggressive high mids. The M700 is a 700 watt class D power amp that uses a hypex module. It slams, and from what I can tell at low volume, so does the Sisma.

I’ll do some direct comparisons as soon as Covid releases its grip on me. But my overall impression is that volume-wise they are probably comparable.

 

[faulknersj]

For legal reasons the following may or may not refer to factual events.

I bought a Sisma a little while ago, and I played 3 sets with it a little while ago. Here’s what I said:

I would love a link to your review!

 

[smeet]

I would love a link to your review!

It got lost when I posted but I inserted the quote now. I’m happy to give more details on it, or try out different tones.

 

[agedhorse]

Yeah sure but it would be really nice to have his though on the Sisma, the overall design without comparing it to his own design

Can’t do it, sorry.

 

[Jeff Scott]

My other amp is a Jule Simone preamp into an M700 power amp.

Whoa! I never knew Monique has a sister. Which one's the better looker?

 

[DJ Bebop]

For legal reasons the following may or may not refer to factual events.

 

[Franz975]

For legal reasons the following may or may not refer to factual events.

I bought a Sisma a little while ago, and I played 3 sets with it a little while ago. Here’s what I said:


My other amp is a Jule Simone preamp into an M700 power amp. That rig is set up for a modern metal sound with tight but present lows and very aggressive high mids. The M700 is a 700 watt class D power amp that uses a hypex module. It slams, and from what I can tell at low volume, so does the Sisma.

I’ll do some direct comparisons as soon as Covid releases its grip on me. But my overall impression is that volume-wise they are probably comparable.

Nice to know !

But if I understand what agedhorse say, your 700W amp can't slam more than another 700W amp because they are the same power :/

It is where I am stuck, if some tell than this one has more slam than another and the others say that it is not possible if they are the same power it is just a color, voicing

 

[Franz975]

Can’t do it, sorry.

How are we supposed to talk about an amp if you can't talk about that amp ?
It is nice to have all those informations on your experience and knowledge but it is still the Sisma thread

 

[Franz975]

It would be awesome for you to get a Sisma and let us know how it is. We are all here because we are interested in it and I just bought an Aguilar DB 751 so it’s your turn!

I definitely want to try one but I need to buy a 2nd bass for my band and it was unexpected :/ (bass cost more than the amp actually)

I discover Jad Freer with Conner Green and the Capo preamp he use, I didn't really looked at the amp they make before.
I think because there is a tube and the "class G" thing make me think it was another marketing thing to sell something that wouldn't be better than other product, the preamp based on a B15 didn't catch my interest, maybe more because I don't know a lot on that pre/amp I don't really know.

After seeing this thread and the review of you all, what Tim Lefebvre says on it and how well it is made it definitely catch my interest. Andrea Lo explain me basically what was a baxandial EQ and difference with the active one (low and high baxandial, active mids)
It has super nice feature with the deep and Lpf that work so nicely on the Capo !
I never Heard it in real but the demo they show and Tim recent video sound really good, full with articulate low end that I don't hear that much on small amp and it definitely enhance (i think its the word :/) the bass that is plugged in to me.
I don't know how it would compare to others amps/bigger amps but the DI record sound fantastic.

Really need to feel it through a cabinet to understand for sure.

The fact that the tube in it can be pushed to overdrive is cool too !

I was a dingwall/darkglass guy before discovering all that tube thing and didn't wanted to hear any overdrive other than darkglass but the Capo is so good and a tube amp that is pushed has something impossible to reproduce with a darkglass unit.

If I found a Sisma in France I will go try it

 

[gtirard]

If I found a Sisma in France I will go try it

Well, I live in Paris, if you want to try mine.

I recently met a TB member who wanted to try my GR Bass cab, he came to my office with his double bass to try it, as he was also intrigued by Sisma I took it with me so he tried both. It was fun and nice. It's super cool to meet a member of the community in real life.

 

[ricardol]

Nice to know !

But if I understand what agedhorse say, your 700W amp can't slam more than another 700W amp because they are the same power :/

It is where I am stuck, if some tell than this one has more slam than another and the others say that it is not possible if they are the same power it is just a color, voicing

A-weighting is valid to represent the sensitivity of the human ear as a function of the frequency of pure tones.
A-weighting - Wikipedia.
That is why electric guitar amps don't need to be as powerful as bass amps...
If you have a bass amp tuned with higher frequencies/ higher harmonic content it will be perceived as louder...

 

[Franz975]

A-weighting is valid to represent the sensitivity of the human ear as a function of the frequency of pure tones.
A-weighting - Wikipedia.
That is why electric guitar amps don't need to be as powerful as bass amps...
If you have a bass amp tuned with higher frequencies/ higher harmonic content it will be perceived as louder...
View attachment 5297549

Yes ! I don't know how to calculate that but low frequencies need more power than higher one.

But when I say louder I mean more of everything and most of the time it is the low end that impress me.
The 500W class D on a 610 compared to the STV3Pro 450W on the same 610 sounded way bigger, 500W is "audible" in the high mids and treble but doesn't get the low end of the other from what I have feel. Anyway

 

[Franz975]

Well, I live in Paris, if you want to try mine.

I recently met a TB member who wanted to try my GR Bass cab, he came to my office with his double bass to try it, as he was also intrigued by Sisma I took it with me so he tried both. It was fun and nice. It's super cool to me a member of the community in real life.

I have played a show at Paris recently but I am from strasbourg ahah.

 

[agedhorse]

Nice to know !

But if I understand what agedhorse say, your 700W amp can't slam more than another 700W amp because they are the same power :/

It is where I am stuck, if some tell than this one has more slam than another and the others say that it is not possible if they are the same power it is just a color, voicing

Again, that’s not what I said. The voicing, texture and dynamics management have a huge impact on the perception of “slam” (or whatever descriptor you wish to use).

How are we supposed to talk about an amp if you can't talk about that amp ?
It is nice to have all those informations on your experience and knowledge but it is still the Sisma thread

It’s not my rules, it’s TalkBass rules. I am providing general technical information that is factual rather than opinion, and am not talking about a competitor’s product but the principals in general.

A-weighting is valid to represent the sensitivity of the human ear as a function of the frequency of pure tones.
A-weighting - Wikipedia.
That is why electric guitar amps don't need to be as powerful as bass amps...
If you have a bass amp tuned with higher frequencies/ higher harmonic content it will be perceived as louder...
View attachment 5297549

This is one aspect of why our perception is what it is, and everyone hears things differently too because we all have divisions from “ideal” (or undamaged) hearing. The curves for average male versus average female also differ quite a bit.

 

[DJ Bebop]

Yes ! I don't know how to calculate that but low frequencies need more power than higher one.

But when I say louder I mean more of everything and most of the time it is the low end that impress me.
The 500W class D on a 610 compared to the STV3Pro 450W on the same 610 sounded way bigger, 500W is "audible" in the high mids and treble but doesn't get the low end of the other from what I have felt. Anyway

Again that could be the difference in the EQ plot from one to the other. If one has their knobs at the same place, noon, but one amp has a baked-in tone consisting of bass, low mids boosted 15% before I change anything vs the other amp that also has a 12 noon knob setting but it's baked in sound scoops the low mids, high mids, and no boost on the bass. Which amp do you think is going to sound fuller, louder?

To get a similar sound out of the weaker sounding amp it might be as minor as turning up the bass and mids. Those knob are meant to be turned.

 

[Franz975]

Again, that’s not what I said. The voicing, texture and dynamics management have a huge impact on the perception of “slam” (or whatever descriptor you wish to use).



It’s not my rules, it’s TalkBass rules. I am providing general technical information that is factual rather than opinion, and am not talking about a competitor’s product but the principals in general.



This is one aspect of why our perception is what it is, and everyone hears things differently too because we all have divisions from “ideal” (or undamaged) hearing. The curves for average male versus average female also differ quite a bit.

The rules are the rules, I just wanted to know what was your experience with Class G amp (not sisma) if you have try those yourself ?

And how is a B15 preamp in comparison to other preamp that you have try ? I know nothing about the B15, the only time I heard one was maybe on old record and it sound like something I don't want to have. Kinda floppy and boomy, but this is surely because of how it was setup + the 15" cab and other thing and not just the preamp by itself.
Ampeg has release a preamp with a B15 mode on it and it sound quite dull, big, fat but dull and I don't understand what is good about it when I listen to those demo.

Because the Sisma sound really good on demo in comparison and has lot of dynamic, clarity and other things I don't know how to describe.

 

[gtirard]

The rules are the rules, I just wanted to know what was your experience with Class G amp (not sisma) if you have try those yourself ?

And how is a B15 preamp in comparison to other preamp that you have try ? I know nothing about the B15, the only time I heard one was maybe on old record and it sound like something I don't want to have. Kinda floppy and boomy, but this is surely because of how it was setup + the 15" cab and other thing and not just the preamp by itself.
Ampeg has release a preamp with a B15 mode on it and it sound quite dull, big, fat but dull and I don't understand what is good about it when I listen to those demo.

Because the Sisma sound really good on demo in comparison and has lot of dynamic, clarity and other things I don't know how to describe.

Listen, you're overthinking this, really. If you read carefully, it's written "Tube preamp based on the iconic B15 sound", so that could mean… anything. Same for class G power section, you can't draw conclusions by analogy with other class-G amps. Don't try to imagine how a preamp based on the B15 + a class G power section sound like, it's lost in advance.

It's a new product, from a relatively new brand. Relax.

All you have is a Youtube demo and our first reviews (from myself and the other early buyers who cared sharing their experience). You really have to learn patience young man, what's the point being aggressive with the most respected member of this community?

 

[faulknersj]

The rules are the rules, I just wanted to know what was your experience with Class G amp (not sisma) if you have try those yourself ?

And how is a B15 preamp in comparison to other preamp that you have try ? I know nothing about the B15, the only time I heard one was maybe on old record and it sound like something I don't want to have. Kinda floppy and boomy, but this is surely because of how it was setup + the 15" cab and other thing and not just the preamp by itself.
Ampeg has release a preamp with a B15 mode on it and it sound quite dull, big, fat but dull and I don't understand what is good about it when I listen to those demo.

Because the Sisma sound really good on demo in comparison and has lot of dynamic, clarity and other things I don't know how to describe.

I am only posting this because it is relevant to the thread topic of the Sisma being Class G.

Definition of Class G:
Link Removed.

Definition of Class D: Link Removed.