2025 mein SUB kuch badlega

[prem]

My new system is slowly settling down. Sounding nice. I will be adding a subwoofer in the coming quarter to understand what it adds to my system.

The sub I have finalised is the TBI Magellan VI. From what I have read it looks like a sub that will integrate well with the Axiom 80.

TBI Audio Systems - Products

TBI Sound is the High-Definition Sound Standard for loudspeakers, subwoofers, sonic impact, audio monitors and audio equipment.

tbisound.com

 

[Satyaki Banerjee]

Excellent decision Prem. Probably one of the very few subwoofers that can keep up with the speed and dynamics of your Axiom 80s.

 

[prem]

I will also know now if SUB moh maya hai

 

[sachinchavan 15865]

for the witty thread title!

 

[prem]

Satyaki and Arj, you guys too played a major part in my decision making. So if it doesn’t work you know whose heads are going to roll

 

[Yelamanchili manohar]

My new system is slowly settling down. Sounding nice. I will be adding a subwoofer in the coming quarter to understand what it adds to my system.

The sub I have finalised is the TBI Magellan VI. From what I have read it looks like a sub that will integrate well with the Axiom 80.

TBI Audio Systems - Products

TBI Sound is the High-Definition Sound Standard for loudspeakers, subwoofers, sonic impact, audio monitors and audio equipment.

tbisound.com

If iam reading this right, it is a single 6.5 inch driver in a little more than one cubic foot box. Any reason why your goodselves choose this over say a 10 incher in the same volume box. I havent read any reviews of it yet, hence curious.

 

[Satyaki Banerjee]

Frankly, having heard your speakers extensively over 3 sessions, I feel it has an extremely precise and articulate bass response with zero overhang. The fact the bass is very tight and if I may use the word fast is making us want the slight bottom end punch that you have got so used to listening to the mighty 15in bass drivers of your JBL 4343.

I think it's more of want of some new excitement that you pushed yourself to go for a subwoofer. Any yes, considering the T/S parameters of your driver and the very fast and dynamic presentation of the speakers, you would need a subwoofer that uses a short throw driver with a non conventional room coupling to work. Very confident that this would give you that little extra in the bottom end that you are craving for, having been spoilt by the bass of the big JBL drivers.

 

[prem]

If iam reading this right, it is a single 6.5 inch driver in a little more than one cubic foot box. Any reason why your goodselves choose this over say a 10 incher in the same volume box. I havent read any reviews of it yet, hence curious.

I know what you mean. A 6.5 in driver for a sub sounds like a no no. But it’s a very different design. Do try and read the reviews. It’s the only sub in my limited budget that I thought would work with the Axiom 80. It’s a very gut feel decision.

 

[Yelamanchili manohar]

my limited budget

 

[prem]

My budget was genuinely limited. Max USD 1500. Honestly there’s nothing decent that you get in that budget.

The Rhythmik was a good option but it is more suited for modern drivers. Not vintage ones.

I had a long chat with the designer an hour back. I will be upgrading from the TBI Magellan to his new design

THOROUGH BASS

tbisubwoofers.com

 

[sachinchavan 15865]

In the three hours I was listening to Prem’s JBL’s, he was standing all the time, tapping his feet and moving to each song. He is a rhythm guy who needs to get his bass fix - that’s my reading.

 

[prem]

Sachin, as Satyaki mentioned the bass of the Axiom 80 is very impressive. It easily goes down to 40hz. With more break in it will probably go down to 35hz.

The Axiom 80 is better than the JBL 4343 in all aspects except the bass. The JBL 4343 has more bass weight but the Axiom 80 is faster and more articulate but it does not dig deep as the 4343.

So curiosity has got the better of me and I want to see if a sub can add that weight and go down lower and bring it on par with the 4343. If that happens it will truly be a world class speaker

Even though I have done a lot of homework, it’s still a gamble. Don’t know if it will pay off.

 

[Naturelover]

I had a long chat with the designer an hour back. I will be upgrading from the TBI Magellan to his new design

THOROUGH BASS

tbisubwoofers.com

And there goes the budget

 

[sachinchavan 15865]

So curiosity has got the better of me and I want to see if a sub can add that weight and go down lower and bring it on par with the 4343. If that happens it will truly be a world class speaker

As long as it doesn’t fuzz the nuanced low end of the speakers. You’d need to get a sub as articulate and tonally identical, wouldn’t you? How about getting another set of woofer drivers (assuming not too costly) and identically building them to add to the existing low end without changing it?

 

[prem]

Naturelover, budget of new one not working

I am back to the old one, the TBI Magellan VI. But instead of using the older amp, i will be using the amp of the newly designed sub which has more features for better integration. The new amp allows to operate completely either in the analog domain or in digital domain with 32 band parametric equalisation. So lot more flexible. The two circuits are independent. There’s a toggle switch behind to move from analog to digital and vice versa. I think it’s worth the little extra cost for this new amp.

It will be a two box thing. A passive sub and a sub amp in a separate enclosure.

As long as it doesn’t fuzz the nuanced low end of the speakers. You’d need to get a sub as articulate and tonally identical, wouldn’t you? How about getting another set of woofer drivers (assuming not too costly) and identically building them to add to the existing low end without changing it?

I didn’t understand your question.

I don’t have a cabinet design which can have both the Axiom 80 and a woofer in the same box. The Goodman designed box allows use of only an Axiom 80 in that.

Since I don’t have a box design which can accommodate both the Axiom and a 12 in woofer, the only option left to augment the bass was a sub.

The basic requirement will be a very fast and articulate sub. It’s not about SPL and chest pounding which is what majority of the subs are designed for. Even if I crossover the sub at around 45hz, it will have some audible signal at 75-80 hz too. The Axiom 80 is extremely articulate in the 60-80 hz band. So it’s better to have a sub that is articulate. Else it might thicken the mid bass and some of the main speaker magic will be lost.

Obviously horn subs will work. But they are generally very big and also they cost a lot.

From all the research I did, the TBI subwoofers looked to be the only viable option in my budget. There are many who use it with Quad 57, Lowthers, Maggie’s, Supravox field coil and other such speakers. They all seem happy with the speed and the integration. Hence I thought why not try it?

I don’t know if I have answered your question though

 

[sachinchavan 15865]

I didn’t understand your question.

I don’t have a cabinet design which can have both the Axiom 80 and a woofer in the same box. The Goodman designed box allows use of only an Axiom 80 in that.

Since I don’t have a box design which can accommodate both the Axiom and a 12 in woofer, the only option left to augment the bass was a sub.

The basic requirement will be a very fast and articulate sub. It’s not about SPL and chest pounding which is what majority of the subs are designed for.

Obviously horn subs will work. But they are generally very big and also they cost a lot.

From all the research I did, the TBI subwoofers looked to be the only viable option in my budget. There are many who use it with Quad 57, Lowthers, Maggie’s, Supravox field coil and other such speakers. They all seem happy with the speed and the integration. Hence I thought why not try it?

I don’t know if I have answered your question though

I don’t know the design of your speaker. All I am asking is have you considered adding exactly same woofers as the existing one to them (how, I don’t know) so as to a provide more weight to the bass whose depth and articulation you are happy with. It comes from absolutely no idea of what is possible or how. The current 12 in woofer isn’t in a box, so why can’t the additional woofer be similary deployed?

 

[prem]

You mean two Axiom 80? If that’s what you mean there’s a design for that too. It will increase SPL but not will not go lower. So with two Axiom 80 I can play louder

Goodman has woofers. So if I buy one of their 12 in woofer, I will have to build a box for it which is usually very large for a vintage woofer. Secondly I will need a separate analogue crossover and a separate amp. These vintage drivers aren’t designed to work with a modern sub woofer amplifier.

So technically possible but the woofer enclosure will be large. About 150 litres is what most vintage woofers need. That means the box will be larger than my existing speaker which is a 97 litre box. So in my space it’s not very practical. If I had a huge place, would have been worth trying

 

[Hari Iyer]

It easily goes down to 40hz. With more break in it will probably go down to 35hz.

I think the 35Hz-40Hz you mention is based on listening and not measurement. I understand that its very difficult to measure low bass in a listening room because of room interactions. But you still can do a near field measurement near the driver cone to know the LF roll-off.

Satyaki and Arj, you guys too played a major part in my decision making. So if it doesn’t work you know whose heads are going to roll

It will be interesting for me to see, after the subwoofer experiment going successful, if Prem consider to also add a compression driver with an exponential horn on top of the Axiom 80 for the HF harmonics content

 

[prem]

I will not be adding an exponential horn. It makes no sense to me.

I think the 35Hz-40Hz you mention is based on listening and not measurement. I understand that its very difficult to measure low bass in a listening room because of room interactions. But you still can do a near field measurement near the driver cone to know the LF roll-off.

I trust my ears

Finalised the older model Magellan VI passive with the new amp in a separate enclosure.

 

[Hari Iyer]

Single or two?