TB W4-657SH measurements

[Pablo]

Hello everybody, this is my first post here.

I´ve got in mind a small and cheap two-way project using TB-657SH as midwoofers:

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-817

I´m afraid of real parameters and response being far away from manufacturer´s ones and shipping from USA isn´t cheap.

Did anyone measure this driver´s T/S, response or distortion?

The tweeter should probably be a Monacor one (excellent experience here in Spain with DT-99 and DT-300 for the price).

Design process will be simulated with SW or Soundeasy.

Thanks in advance.

Pablo.

[cjd]

Any reason you need to ship from the US?

C

[Jed]

Looks like they're not in stock until February anyhow. I tested the poly version of that and it wasn't all that great. It was the W4 656. 2 % peak 3rd order distortion at 2.2k. I've seen tests of the Aluminium cone TB in Klang and Ton magazine and was not blown away. Pretty less than average/fair performance. Actually I don't think I've seen a TB with "low" distortion. You'll need an Usher or ScanSpeak for that.

Aurasound makes some neat small relatively low distortion drivers- you could check them out too.

[Pablo]

Thank you for the answers.

These drivers are not easily available in the european online shops I use to buy from. Anyway, I´ll search again.

I didn´t notice they were out of stock at PE ops:

About the Klang and Ton test, the only quote I had read before around the web, pointed these driver as a bad full range, but a great potential midwoofer for small monitors. Unfortunately I could not read the original article.

I think the issue of distorsion is not a universal one in TangBand drivers. In fact, the W5-704 tested in Zaph´s page seemed to be a good value driver.

Pablo.

[Jed]

I'll see if I can find the Klang and Ton issue with this driver and I'll report back.

Jed

[cjd]

What *is* available to you? Perhaps nothing comparably priced even including shipping, but it's always worth a check. At the moment it may be worth considering the 4ohm RS150 since it's only a few bucks more... for now.

[Jed]

Alright, I found the info. See attached and let me know what you think.

Not comparable to the Dayton RS, especially if you have to pay for shipping from PE anyway.

[fjhuerta]

I own 4 of them. Definitely NOT worth it. They have (IIRC) a really ragged FR that has dips where it shouldn't, and high break-up nodes. I'd really rather get a set of Dayton RS125s (which I own), the TB Bamboos (which I owned and loved), or the W4-1337s (the best 4" driver I've ever worked with).

[Jed]

Javier,

Curious to know how you used the TB W4 1337. What other drivers did you use with it?

Jed

[DDF]

Pablo,
Many W4657SB measures can be found here as part of my project with a D26. To be honest, the driver probably isn't worth the trouble due to its hazy upper mids/treble (distortion), but I'm already well down this road.

http://www.geocities.com/dalfarra@rogers.com/

Dave

[fjhuerta]

Javier,

Curious to know how you used the TB W4 1337. What other drivers did you use with it?

Jed

I used them with the RS28. Overkill, quite probably . I crossed them at 2.2 KHz on an MTM configuration. It's probably my favorite small MTM speaker I've built - the W4's have an awesome midrange.

[Pablo]

Sorry for my late answer, I´ve travelling till yesterday.

Thank you for all the valuable information you have posted. You are right, they don´t seem to be a great option if you intend to cross them high.

I´ll take a look at those Dayton.

Regards.

Pablo.