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Peerless 830875 6-1/2" Nomex Cone HDS Woofer
Is this the same part as 299-127? It seems to have the same model number 830875
The 299-127 was a buyout product, from a time when the manufacturer was moving to a new facility for the production of the product. This current offering is the same model, same manufacturer, but manufactured in the new facility.
Date published: 2012-05-23
How low can you go?
If size was not a concern, what would be the ideal box and vent dimensions to really make the most of the low end for this driver?
The largest I would recommend putting this driver in is a .8 cu ft enclosure tuned to 47 hz, a 3" diameter by 8.5" long port should get you there with minimal port noise or compression, this will give you an f3 of 43 hz.A larger enclosure and you start to get a peak in the bass, a lower tune and the low end will start rolling off early.
Date published: 2012-03-28
what is the port length in a .50 cabinet to tune to 45hz?
Port length also depends on the area of the port opening.For this driver I would use at a minimum of a 2" diameter port to keep air velocity down.Here are some port lengths for round ports:1.5"D = 4.5"L2"D = 7"L2.5"D = 11.25"L3"D = 16.5"L
Date published: 2012-03-02
Is this a good replacement for the woofer in a Sonus Faber center solo?
Looking to replace a blown woofer on a Sonus Faber center solo. The dimensions seem to be a perfect fit. I have no idea on the TS params on the SF woofer unfortunately :-(
I believe Sonus Faber outsourced to Peerless or Tymphany for the drivers they used so the physical fit should be perfect. There may be a slight difference in sound but as long as the impedance matches the original I see no reason it wont work.
Date published: 2013-09-05
What is a good x-over point and is a 2nd order or 3rd order slope the best for a 2-way!
i have this crossed around 2.3k 2nd order electrical with vifa xt25 and get almost perfect frequency and phase in a small 2 way around .5 cubes ported, with no eq applied at all, very easy to integrate and fairly cheap.
Date published: 2013-01-09