Generic Amp for iw sub 10/10

[Algirdas]

Would be lucky to get some advices from you guys. I'm building my home theatre and there left the last step - passive sub amplifier, which would output signal to SR6010 receiver. I could have bought sub amp 600 which is matched with iw sub 10/10, but it looked a little overpriced for me. How do you think, is it a good idea to buy generic amp for this sub, for example behringer a500 or crown xli800, and what possible drawbacks are hidden in such decision?

Thank you in advance!

 

[lovinthehd]

Looking at the product page I don't see the sensitivity or impedance rating of the sub on which to base an amp decision, do you have that information? Does the amp need eq? Why a DT "sub" in the first place?

 

[Algirdas]

In manual (page 13) it is said 4 ohms.

http://www.directed.gr/photos/IWSub1010_SubAmp600_Manual_13009_read.pdf

So 4 ohms would be the target.

There are some info about 10/10 inherent amp, but really lacks it..

https://www.definitivetechnology.com/products/subamp-600

I guess that eq is not needed because I can low pass in the receiver.

Well, why did i choose it... I had to make a decision once and i was overwhelmed with too much new information, so here I am, hehe. Still nice experience with new challanges as this with amp.

Now this sub amp 600 has phase knob that bothers me and it looks more like a marketing trick. I guess it has something in common with room modes and these could be solved with audyssey room correction in SR6010. What do you think?

Maybe you understand this in the amp specs * crossover
40 Hz → 150 kHz, Slope of 12 dB per Octave * ?

Is it a possible low pass filter knob positioning?

 

[lovinthehd]

In manual (page 13) it is said 4 ohms.

http://www.directed.gr/photos/IWSub1010_SubAmp600_Manual_13009_read.pdf

So 4 ohms would be the target.

There are some info about 10/10 inherent amp, but really lacks it..

https://www.definitivetechnology.com/products/subamp-600

I guess that eq is not needed because I can low pass in the receiver.

Well, why did i choose it... I had to make a decision once and i was overwhelmed with too much new information, so here I am, hehe. Still nice experience with new challanges as this with amp.

Now this sub amp 600 has phase knob that bothers me and it looks more like a marketing trick. I guess it has something in common with room modes and these could be solved with audyssey room correction in SR6010. What do you think?

Maybe you understand this in the amp specs * crossover
40 Hz → 150 kHz, Slope of 12 dB per Octave * ?

Is it a possible low pass filter knob positioning?

Still no sensitivity but seems an amp providing 250 w at 4ohm should suffice if the other amp is a guideline. EQ is different from using a low pass filter and in the case of this sub was wondering if it would be needed for response shaping or even a high pass filter to protect below the sub's tuning (may not be necessary depending on sub design).

Your receiver can provide bass management and does have a pretty decent eq for subs via Audyssey. Most sub amps have a phase adjustment (more often a 0/180 flip switch, some will have variable adjustment). Your avr may also have a separate phase adjustment for the sub; Audyssey will address it to an extent (and there is a way to use the delay settings to further tweak phase).

While they may have called it a crossover, it seems its just a low pass filter (and many subs only offer a low pass filter and not an actual crossover (which would include a high pass filter for the speakers).

 

[Algirdas]

Thank you! From what i know now i think crown xli800 may fit my needs! Ill post after trying my system.

 

[lovinthehd]

Hopefully you don't need a protective high pass filter with that design; I'd check with DefTec. Read this article.

The XLi should be fine and has some nice features. I've been very happy with my Crown XLS amps for my sealed builds.

 

[Verdinut]

It really annoys me when a speaker manufacturer doesn't even indicate a basic characteristic such as the nominal impedance of its transducers on its website. Also, since the impedance varies with the frequency, it's always preferable to have the impedance curve over the frequency range, so we know what kind of amplifier would be needed to drive it.

On my part, should this happen to me when making a serious search before purchasing a speaker, I would just skip that company and opt for a product by a company that publishes complete and honest specs.