Good BASS drivers at partsexpress ?

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Hi,

I am looking for some good BASS drivers with deep clean tight bass and good resolution. I am looking at 5" -7 " drivers siutable for bass-reflex alignment with box size of less than 1 cu feet.
Looks like these are some good drivers. Can anyone comment on these. These will be used with 3"full range Tang Band drivers available at PartsExpress and will mostly be used for listening to FM

First is Part Number 299-706

http://www.partsexpress.com/pe/show...&St3=62692544&DS_ID=3&Product_ID=117849&DID=7

Really cannot believe the price of the above one. Sounds too good to be true, is there some catch here. Can really put multiple drivers at this price

Second is Part Number 295-300

http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=295-300

Third is Part Number 295-305

http://www.partsexpress.com/pe/show...47&St3=62692544&DS_ID=3&Product_ID=7769&DID=7

Also if someone could suggest how to model multiple drivers (Firstly with two separate drivers in a vented box so that the area is doubled and second with both drivers in push pull mode). What will I achieve with these two configurations?

Thanks in advance
Goldy
 
Hi Yourself! :cool:

I'm no expert on baby woofers (Ask me about 15, 18, 21, & 24's :nod: ) but, I will give you my $0.02


Either one you can't go wrong. The SPL's are the same (1 dB is difference is nothing) The QTS is good for a Reflex design.
So, the only thing left is choose the right drivers, for your
desired, size, enclosure(s)


You'll need a modeling program to achieve optimum results.
(Using multiple drivers in one enclosure)
 
Check out this link - looks like some good in-depth advice on using the TangBand 3 inch drivers.

http://home.new.rr.com/zaph/audio/audio-speaker11.html

Here's an excerpt:

"Note that the W3-871 is NOT the same as the 3" Tangband drivers available at Parts Express, it is largely improved due to the polymer damping coating on the cone. "

I'd definitely look into using the improved driver.

Also check out this Tang Band 8 inch woofer for $31:

http://www.tb-speaker.com/detail/0116/W8-740C.htm

It has dramatically better low frequency reach, XMax and power handling than the PE driver. Can't personally vouch for it's quality.

Available at:

http://www.nuera-acoustic.ca/

Good luck!
 
Just not the coating on the 871S.
It a complete different driver over the 879S
Different
PHASE PLUG-wider and longer on the 879S
Cone is 100% different_different cone angle over the 871S
Different Spyder over the 871S the 879S has5 rung spyder and the 871S has 4.

Look at my DIY site and you will see the difference on them.

http://quicksitebuilder.cnet.com/wrnch2/diyspeakerbuilding/

And the 8" sub from TB the MCM for less money is just the same out put.
55-2421 from MCM over the TB W8-740C
I will have the Quatro soon to do a test using it in the same cabinet as the TB,MCM
Sealed,ported,Single PR the twin PR.
But as it stands now the TB and MCM will hit the 20HZ range but need the RCM pr to do it.I have found no other way to get that low with these drivers other than the RCM PR.
The MCM prs are 8mm and the RCM 50mm.So if you use the MCM pr you will need to start with 4 of them.
And the MCM has no way to add mass.
As the RCM has the screw with a nut to add mass.

Just my cents on these.


And CSS sells the 871S and very good customer service as well.
 
Disabled Account
Joined 2002
Yeah, the one you ordered should get you some nice bass, especially with 8 of them. If you want, look into adding some mass to them to get them to go lower, since you will have plenty of efficency with all 8. I am assuming that you are using them for just bass of course.

-Paul Hilgeman
 
PaulHilgeman said:
Yeah, the one you ordered should get you some nice bass, especially with 8 of them. If you want, look into adding some mass to them to get them to go lower, since you will have plenty of efficency with all 8. I am assuming that you are using them for just bass of course.

-Paul Hilgeman

I assume you were refering to me... (sometimes it gets a little confusing). I was actually planning on building a set of MMTMM's out of them. Series-parallel to keep a 4 ohm impedance. Maybe with the Vifa XT ring tweeter.
I can't believe that these things are only about $6 a piece! Cast frame, 70W, decent response... It's a nice driver for the price!
Right now for bass I am using a sub with 8- 8" MCM 55-1190 woofers in a large sealed enclosure with a 250 watt amp. The sound is pretty good- definitely clean at reasonable to fairly loud levels, and you can't beat the price on those drivers- about $12 a piece in 4 or more quantity.
Anyway, I'm not trying to take over the thread...
Good luck on your search, Goldy. Let us know what you come up with.
Steve
 
But how do I model multiple drivers ?

I will go with the parts express ones. But how do I model both the drivers. I will be looking at both the configurations

a) Push Pull with each driven by TDA1514 and
b) Both in parallel (not electrically but acoustically) again both

driven by TDA1514 each. I believe the resulting specs in both configurations are going to differ, but how do i calculate the resulting parameters. Any free modelling utilities. Please name them

Thanks In Advance
 
Disabled Account
Joined 2002
Use Unibox found at:
http://www.pvconsultants.com/audio/frdgroup.htm

It works well, enter the parameters found at PE's site (I have done measurements of mine, and they come out very similar) Select 2 drivers in parallel. You should try a box volume of about 20L and a tuning frequency of 50Hz. This should get you some darn good bass out of 5" drivers.

Drive them with the same amplifier, in electrical phase with eachother.

-Paul
 
Ok Java man
The MCM and TB are of a equal sound out put.That is the point.
For the money the MCM is a better USD deal over the TB.
But both need a high excursion PR with a stiff compliance.
And I have looked high and low and talked Bob at CSS into bring the RCM in for the sole reason of the 8" subs from TB and MCM.
There is not a sub out on the market that will do what these 8" driver require.
As of today.

The Quatro I will have ina week at the latest.But even talking with Darren K from PE the other day on these he even says that the Quatro is not going to tune as low as the TB and MCM.
But just will be a good small 8" driver that will take a lot of power and stay around 40hz.

All of the TB and MCM tests were done in a 1cft cabinet .
sealed,then ported, then a single and then Twin PR was added.

End result .
They need a boost in around 35hz.The small PE amp or Solen SUB 100 from CSS is the same as the PE just no reamovable cord.And a open back to a sealed case as the PE.
Other than that same out put out of the both amps.

These 8" drivers also need the PR sealed just will not go that low.
40hz is about it.
Ported well you need a port 2x24" long and still get port noise out of them.
So a PR fits in easy in the 12x12x12 cube with these 8' drivers gets down in the 20hz range and does not bottom out the drivers.

Now a twin RCM and these things will punch like you would not even believe possible for a 8" driver.

Hope this answers your question.
 
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