[problem fixed] Going to buy two more AHB2 for mono mode.

[sunny7day]

I am already using a single AHB2 to drive my floor standing speakers. It is very very good sounding at upper and mid range. However it is a bit lacking in bass maybe due to two 6 inch woofers per side, and the AHB2 does not have enough power(or current) to drive them?

I am planning to buy two more AHB2 and use them in bridged mono mode for my floor standing speakers. The old AHB2 will be used for my desktop PC.

Do you think i will get more bass for my floor standing speakers at the same volume level? Bridged mono mode will give me a massive 500 Watt/channel Class A power to my 4 ohm speakers!

 

[Matias]

If you are after power for bass from your speakers you could buy a Purifi 1ET9040BA based amp or monos for better value and even more power.

Power Amplifier Vendors using Hypex or Purifi technology

Here is the list, please review for completeness. Will update as needed. Apollon Audio: https://apollonaudio.com/apollonaudio.com ATI (Amplifier Technologies Inc.): https://ati-amp.com/ Audiophonics: https://www.audiophonics.fr/ boXem Audio: https://www.boxem-audio.eu/ Buckeye Amps...

www.audiosciencereview.com

 

[DVDdoug]

I'd say two 6-inch woofers are "minimal". The cone area is between that of an 8-inch and 10-inch woofer. Maybe consider a subwoofer if you don't want to upgrade-replace your speakers.

And, are your speakers rated for 500W?

And class A is "stupid" especially at higher wattage. Class-A is not the best. It was the first and was popular for a long time because class A/B required another tube or transistor, but at higher power it's more practical and more economical. In the old days, most radios & TVs had class-A amplifiers because they were cheaper. Class-D requires a LOT more electronics but most of it is in a chip so the cost of additional electronics is not very significant and class-D now has the lowest cost per-watt.

 

[Old_School_Brad]

The lack of bass is due to your speakers, not your amplifier.

 

[sunny7day]

If you are after power for bass from your speakers you could buy a Purifi 1ET9040BA based amp or monos for better value and even more power.

Power Amplifier Vendors using Hypex or Purifi technology

Here is the list, please review for completeness. Will update as needed. Apollon Audio: https://apollonaudio.com/apollonaudio.com ATI (Amplifier Technologies Inc.): https://ati-amp.com/ Audiophonics: https://www.audiophonics.fr/ boXem Audio: https://www.boxem-audio.eu/ Buckeye Amps...

www.audiosciencereview.com

The reason i want to buy AHB2 again is because the high and mid range sound very good and musical. It sound so sweet. Now is just a bit lacking in bass. And i will not use class D amps. Thanks bro.

 

[sunny7day]

I'd say two 6-inch woofers are "minimal". The cone area is between that of an 8-inch and 10-inch woofer. Maybe consider a subwoofer if you don't want to upgrade-replace your speakers.

And, are your speakers rated for 500W?

I don't use subwoofer.

Here is the specification of my speaker:

Frequency Response: 28 Hz – 35kHz, Stealth reflex included.
Sensitivity: 90 db SPL (2.83V/1 m).
Nominal Impedance: 4 ohm.
Suggested Amplifier Power Output: 100W – 500W, without clipping.
Long-term Max Input Voltage (IEC 268-5): 25 V rms
Dimensions (HxWxD): 1176 x 411 x 512 mm
Weight: 61 Kg
Finishes: Red or Wenge
Price: £23,500 per pair

 

[Multicore]

First verify that the problem you're hearing is a lack of amplifier power. If it is not then you're wasting time and money on upgrading amps and you need to look at your speakers to address the deficient bass.

 

[MAB]

I am already using a single AHB2 to drive my floor standing speakers. It is very very good sounding at upper and mid range. However it is a bit lacking in bass maybe due to two 6 inch woofers per side, and the AHB2 does not have enough power(or current) to drive them?

I am planning to buy two more AHB2 and use them in bridged mono mode for my floor standing speakers. The old AHB2 will be used for my desktop PC.

Do you think i will get more bass for my floor standing speakers at the same volume level?

No. Not one iota of extra bass.

Bridged mono mode will give me a massive 500 Watt/channel Class A power to my 4 ohm speakers!

It's not Class A. They are nice amps though, just not Class A. You don't want Class A, it seems like you want better speakers, or at least ones with more bass output. What are your speakers?

 

[ex audiophile]

You seem to be set on your decision so I'm wondering why you have posted. The fact is that if the clipping light on your AHB2 is not flashing you are not overloading the amp and whatever sound you are hearing is NOT due to the amp. Buying more amps will do absolutely nothing, despite what you think you might hear.

 

[sunny7day]

Thank you everyone. I have just switched to silver jumpers for my speakers, the bass is back.

 

[ex audiophile]

OMG

 

[HalSF]

I’m wishing the OP good luck in finding a rational solution, but so far this quest for improved bass seems focused on quixotic ideas and taking the long way ‘round, compounded by a couple of pugnacious fixed ideas like no Class D or subs (and now bass-boosting silver jumpers!). Yikes.

 

[mns3dhm]

I have a pair of Revel F206 speakers that are not too dissimilar from the speakers you're using and I'm using a Parasound Hint6 integrated amp (160W @8ohms/ 240W @4ohms) that is comparable to the AHB2 as far as power output is concerned. They F206's are -6db @40 Hz so I wound up adding a subwoofer to get better low bass, so I suspect the issue you're describing has more to do with the speakers than the amplification. That's just a guess, but I'd consider buying a sub from a manufacturer that will let you try it out and return it if it doesn't meet your expectations.

 

[MAB]

Thank you everyone. I have just switched to silver jumpers for my speakers, the bass is back.

I think you may need a measurement microphone more than anything!
I recommend MiniDSP UMIK-1, and perhaps one of MiniDSP's PEQ units as well. Good luck!

 

[DVDdoug]

Are you using EQ or tone controls to boost the bass?

Frequency Response: 28 Hz – 35kHz,

28Hz is usually low enough (the lowest note on a standard electric bass guitar is about 40Hz). But the question is, how loud can it go at 28Hz before it starts to distort? Most "pro" subs used live and in dance clubs are only tuned to go down to around 40Hz. That's low enough for bass you can feel in your body if it's strong enough.

The reason i want to buy AHB2 again is because the high and mid range sound very good and musical. It sound so sweet. Now is just a bit lacking in bass.

Virtually all amplifiers have flat frequency response across the audible range. If an amp has more or less bass it's defective (ignoring EQ or tone controls).

"Musical" and "sweet" are undefined, although this kind of terminology is popular in (non scientific) audiophile circles. My setup is musical when playing music. Not so much when listening to the news.

 

[sunny7day]

No. Not one iota of extra bass.

It's not Class A. They are nice amps though, just not Class A. You don't want Class A, it seems like you want better speakers, or at least ones with more bass output. What are your speakers?

It's class A bro.
My speakers are: Sonus Faber Amati Homage Tradition

 

[sunny7day]

Are you using EQ or tone controls to boost the bass?


28Hz is usually low enough (the lowest note on a standard electric bass guitar is about 40Hz). But the question is, how loud can it go at 28Hz before it starts to distort? Most "pro" subs used live and in dance clubs are only tuned to go down to around 40Hz. That's low enough for bass you can feel in your body if it's strong enough.


Virtually all amplifiers have flat frequency response across the audible range. If an amp has more or less bass it's defective (ignoring EQ or tone controls).

"Musical" and "sweet" are undefined, although this kind of terminology is popular in (non scientific) audiophile circles. My setup is musical when playing music. Not so much when listening to the news.

Haha, woofers need more power to drive. An underpower amp will have problem at bass while it has no problem at mids and highs.

 

[HalSF]

It's class A bro.
My speakers are: Sonus Faber Amati Homage Tradition

You may be confusing the fact that Stereophile included the AHB2 in its Class A category of recommended components with the amplifier’s topology.

It’s a hybrid Class H and Class AB amplifier with feed-forward error correction.

 

[MAB]

It's class A bro.
My speakers are: Sonus Faber Amati Homage Tradition

Bass, hmm...

Sonus Faber Amati Homage loudspeaker Measurements part 2

With two woofers loaded by two ports, and a midrange unit in its own subenclosure loaded by a third port, the Amati Homage's behavior in the midrange and bass is complex. Fig.4 shows the responses, measured in the nearfield, of all of these radiating elements. The top trace to the right in fig.4...

www.stereophile.com

Also. Please understand the difference between Class-A and a 'Stereophile Class A Rating'.

Benchmark AHB2 Power Amplifier

Benchmark's new AHB2 Power Amplifier - "The Quietest, Cleanest Audio Amplifier on the Planet"

benchmarkmedia.com

Again, good luck squeezing more bass out of those one-note wonders!

 

[Old_School_Brad]

Thank you everyone. I have just switched to silver jumpers for my speakers, the bass is back.

Case closed.
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