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PD154 vs PD158 vs PD1550

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ultramars10 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ultramars10 Quote  Post ReplyReply Direct Link To This Post Topic: PD154 vs PD158 vs PD1550
    Posted: 09 June 2016 at 3:17am
looking again at the specs, i see indeed that the flux density and Magnet Gap Depth are different, so theses are different magnets indeed.

Thanx for this valuable answer anyway, u just saved a fully functionnal PD 158 membrane LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote corell Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2016 at 3:02am
no. the magnet is still a PD158, not 1550.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ultramars10 Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2016 at 1:42am
Hello again,

one question: is it possible for me to recone a PD 158 basket with a PD 1550 recone kit ?
will that make a PD1550 then ?


Edited by ultramars10 - 09 June 2016 at 1:42am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ultramars10 Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 3:08pm
If anything, the PD 1550 has lower Le, lower EBP and lighter mms than the PD 154, wich i read in this section of the forum is all better for playing higher frequencies. I used the 1550 succesfully up to 350 hz in a bass reflex box, and i liked the result very much Smile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ultramars10 Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 1:36am
Hello,

i've just made this test last week with the PD 1550 and PD 158 drivers i have, and the PD 154 and HD15 that some friends have.

We put the HD's loaded with PD 1550 and PD 158 next to one loaded with pd154, and fed them with the same signal amplified by the same amp: a loop taken from the begining of a track i made myself with the hardest kick i ever produced, band limited from 80hz to 250.
We noticed that :

- 1550 sounded nicer than 154, meaning more defined / musical in the high end, and more brutal alltogether somehow;
- 154 sounded undefined and dull in the high end. Not to be used above 180 hz with that driver i'd say...
- 158 sounds slighly less good than 154, but so little difference that it can be considered as equivalent.

All three drivers were just about as loud, so difference was only in the quality of sound.

Considered that 158 cost less and takes more power, i'd say it's a good alternative to 154, while i will keep on using the four PD1550 i have since i intend to cross them as high as 250 hz with my F1 R2SH Star
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tweeter box Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2010 at 9:42am
this is weird coz the PD158 plots are smoother louder than the PD154, so i still dont get why 154 is the recomended driver??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fat_brstd Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2010 at 5:06pm
Originally posted by tweeter box tweeter box wrote:

if the 1550 plots are so good and the driver can take/give that lil bit more then why is the pd154 the recomended driver? Confused


Price. The difference in sound between the 154 and 1550 is so small that its not worth all the extra money. I havnt actually heard one but 2nd hand info says the 1550 is unimpressive in this cabinet considering what it can do in other boxes.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tweeter box Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2010 at 4:39pm
if the 1550 plots are so good and the driver can take/give that lil bit more then why is the pd154 the recomended driver? Confused
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billso Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2010 at 1:22pm
I once tried some 1550s in the jbl equivalent of the hd15 and it sounded dreadfull.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rich_gale Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2010 at 4:01am
158 is honky imo.  id go with 1550 due to it only being slightly more money.  lower fs but lower mms if i remember rightly.  the 1550 may have a big ol xmax, but it is smooth higher than most 15's with that sort of xmax.  it weired because the 188 is less honky than the 158 in my opinion.  in using the 158 i think its reduntant when the 1550 is so close to the price with better lf/ lower fs/ lowe mms / better resale value.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2010 at 3:38am
if you can handle the weight Tweet, the 1550 is a totally different beast
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dj-panoramix Quote  Post ReplyReply Direct Link To This Post Posted: 13 February 2010 at 10:43pm
the 3 look pretty similar on sim,
0,5PI PD154(grey) VS PD158(black):
 
0,5PI PD154(grey) VS PD1550(black):
 
0,5PI PD158(grey) VS PD1550(black):
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